/* roulang page: index */
:root {
            --color-primary: #1B1E24;
            --color-primary-soft: #262A33;
            --color-accent: #E8A33D;
            --color-accent-hover: #D18C2B;
            --color-highlight: #3EC6A8;
            --color-bg: #F5F4F0;
            --color-surface: #FFFFFF;
            --color-surface-muted: #EDECE7;
            --color-text: #22242B;
            --color-muted: #6B7280;
            --color-border: rgba(27, 30, 36, 0.10);
            --shadow-card: 0 6px 24px rgba(27, 30, 36, 0.08);
            --shadow-hover: 0 14px 40px rgba(27, 30, 36, 0.14);
            --radius-card: 16px;
            --radius-button: 12px;
            --radius-input: 10px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'system-ui', 'sans-serif';
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            min-height: 100vh;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(27, 30, 36, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
            box-shadow: 0 2px 20px rgba(27, 30, 36, 0.08);
            transition: all 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(27, 30, 36, 0.96);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 30px rgba(27, 30, 36, 0.2);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #1B1E24;
            font-weight: 800;
            
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            border-radius: 8px;
            position: relative;
            white-space: nowrap;
            transition: all 0.25s ease;
        }

        .nav-links a:hover {
            color: var(--color-accent);
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-links a.active {
            color: #FFFFFF;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-highlight);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            font-size: 13px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            white-space: nowrap;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }

        .nav-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(232, 163, 61, 0.35);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #FFFFFF;
            font-size: 24px;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s ease;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            z-index: 99;
            background: rgba(27, 30, 36, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 4px;
            transform: translateY(-8px);
            opacity: 0;
            pointer-events: none;
            transition: all 0.3s ease;
        }

        .mobile-menu.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
            display: flex;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            border-radius: 10px;
            transition: all 0.2s ease;
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--color-accent);
        }

        .mobile-menu a.active {
            color: var(--color-highlight);
            font-weight: 600;
        }

        /* Hero */
        .hero-section {
            padding-top: 160px;
            padding-bottom: 80px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            min-height: 640px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(27, 30, 36, 0.88) 0%, rgba(27, 30, 36, 0.72) 40%, rgba(27, 30, 36, 0.55) 100%);
            z-index: 1;
        }

        .hero-section .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }

        .hero-badge-group {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .hero-avatar {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 800;
            color: #1B1E24;
            border: 3px solid rgba(255, 255, 255, 0.25);
            
        }

        .hero-meta-badges {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .hero-stat-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            font-family: 'Roboto Mono', 'Inter', monospace;
            letter-spacing: 0.3px;
        }

        .hero-stat-badge .num {
            font-weight: 700;
            color: var(--color-highlight);
        }

        .hero-title {
            font-size: 40px;
            font-weight: 700;
            line-height: 1.2;
            color: #FFFFFF;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.78);
            margin-bottom: 32px;
            max-width: 520px;
            font-weight: 400;
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            font-size: 15px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(232, 163, 61, 0.4);
        }

        .btn-primary:focus-visible {
            outline: 3px solid var(--color-highlight);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 24px;
            font-size: 15px;
            font-weight: 500;
            color: #FFFFFF;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--radius-button);
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.55);
            transform: translateY(-2px);
        }

        .btn-secondary:focus-visible {
            outline: 3px solid var(--color-highlight);
            outline-offset: 2px;
        }

        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .hero-visual-card {
            width: 100%;
            max-width: 460px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
        }

        .hero-visual-card .visual-label {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 14px;
            font-weight: 500;
        }

        .hero-data-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hero-data-row:last-child {
            border-bottom: none;
        }

        .hero-data-row .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
        }

        .hero-data-row .value {
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            font-family: 'Roboto Mono', 'DIN Alternate', 'Inter', monospace;
            letter-spacing: 0.5px;
        }

        .hero-data-row .value.highlight {
            color: var(--color-highlight);
        }

        .hero-data-row .value.accent {
            color: var(--color-accent);
        }

        /* Section Common */
        .section {
            padding: 72px 0;
        }

        .section-alt {
            background: var(--color-surface);
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-muted);
            max-width: 640px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(232, 163, 61, 0.1);
            border-radius: 999px;
            margin-bottom: 14px;
        }

        /* Service Section */
        .service-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 24px;
        }

        .service-main-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
            cursor: pointer;
            display: flex;
            flex-direction: column;
            min-height: 380px;
        }

        .service-main-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--color-accent);
            border-radius: 4px 0 0 4px;
        }

        .service-main-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .service-main-card:hover::before {
            width: 6px;
        }

        .service-card-image {
            width: 100%;
            height: 200px;
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 18px;
            background: var(--color-surface-muted);
        }

        .service-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .service-card-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
        }

        .service-card-desc {
            font-size: 14px;
            line-height: 1.75;
            color: var(--color-muted);
            margin-bottom: 16px;
            flex-grow: 1;
        }

        .service-card-badges {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
            border-radius: 999px;
            background: var(--color-surface-muted);
            color: var(--color-muted);
            letter-spacing: 0.3px;
        }

        .badge-accent {
            background: rgba(232, 163, 61, 0.12);
            color: var(--color-accent-hover);
            font-weight: 600;
        }

        .badge-highlight {
            background: rgba(62, 198, 168, 0.12);
            color: #2A9D8F;
            font-weight: 600;
        }

        .badge-pin {
            background: rgba(27, 30, 36, 0.06);
            color: var(--color-primary);
            font-weight: 600;
        }

        .service-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent-hover);
            transition: gap 0.25s ease;
        }

        .service-card-link:hover {
            gap: 10px;
        }

        .service-side-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .service-side-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            cursor: pointer;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            position: relative;
        }

        .service-side-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            background: var(--color-surface);
        }

        .service-side-item .item-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 18px;
            background: var(--color-surface-muted);
            color: var(--color-text);
        }

        .service-side-item:nth-child(1) .item-icon {
            background: rgba(232, 163, 61, 0.12);
            color: var(--color-accent-hover);
        }

        .service-side-item:nth-child(2) .item-icon {
            background: rgba(62, 198, 168, 0.12);
            color: #2A9D8F;
        }

        .service-side-item:nth-child(3) .item-icon {
            background: rgba(27, 30, 36, 0.06);
            color: var(--color-primary);
        }

        .service-side-item .item-content {
            flex-grow: 1;
        }

        .service-side-item .item-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
        }

        .service-side-item .item-desc {
            font-size: 13px;
            line-height: 1.65;
            color: var(--color-muted);
            margin-bottom: 6px;
        }

        .service-side-item .item-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--color-muted);
        }

        .service-side-item .item-arrow {
            font-size: 16px;
            color: var(--color-muted);
            flex-shrink: 0;
            transition: transform 0.25s ease;
            align-self: center;
        }

        .service-side-item:hover .item-arrow {
            transform: translateX(4px);
            color: var(--color-accent);
        }

        /* Topic Cloud */
        .topic-cloud {
            margin-top: 40px;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            padding: 20px 24px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }

        .topic-cloud-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            white-space: nowrap;
            margin-right: 4px;
        }

        .topic-tag {
            display: inline-flex;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            border-radius: 999px;
            background: var(--color-surface-muted);
            color: var(--color-muted);
            transition: all 0.25s ease;
            cursor: pointer;
            border: 1px solid transparent;
        }

        .topic-tag:hover {
            background: rgba(232, 163, 61, 0.12);
            color: var(--color-accent-hover);
            border-color: rgba(232, 163, 61, 0.25);
        }

        .topic-tag.active-tag {
            background: var(--color-accent);
            color: #1B1E24;
            font-weight: 600;
        }

        /* Stats Section */
        .stats-section {
            background: var(--color-primary);
            color: #FFFFFF;
        }

        .stats-section .section-title {
            color: #FFFFFF;
        }

        .stats-section .section-desc {
            color: rgba(255, 255, 255, 0.65);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 36px;
            align-items: center;
        }

        .stats-bars {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .stat-bar-item {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .stat-bar-item .bar-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            min-width: 100px;
            white-space: nowrap;
        }

        .stat-bar-item .bar-track {
            flex-grow: 1;
            height: 8px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 999px;
            overflow: hidden;
        }

        .stat-bar-item .bar-fill {
            height: 100%;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-highlight));
            transition: width 1.2s ease;
        }

        .stat-bar-item .bar-value {
            font-size: 14px;
            font-weight: 700;
            color: #FFFFFF;
            font-family: 'Roboto Mono', 'Inter', monospace;
            min-width: 56px;
            text-align: right;
        }

        .stats-hotlist {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-card);
            padding: 24px;
        }

        .stats-hotlist-title {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hotlist-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .hotlist-item:last-child {
            border-bottom: none;
        }

        .hotlist-item:hover {
            background: rgba(255, 255, 255, 0.04);
            padding-left: 8px;
            border-radius: 8px;
        }

        .hotlist-rank {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            font-family: 'Roboto Mono', monospace;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.7);
        }

        .hotlist-rank.rank-1 {
            background: var(--color-accent);
            color: #1B1E24;
        }

        .hotlist-rank.rank-2 {
            background: var(--color-highlight);
            color: #1B1E24;
        }

        .hotlist-rank.rank-3 {
            background: rgba(62, 198, 168, 0.4);
            color: #FFFFFF;
        }

        .hotlist-item .hotlist-text {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
            flex-grow: 1;
            line-height: 1.5;
        }

        .hotlist-item .hotlist-count {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            font-family: 'Roboto Mono', monospace;
            white-space: nowrap;
        }

        /* Case Section */
        .case-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 24px;
        }

        .case-card-large {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .case-card-large:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .case-card-image {
            width: 100%;
            height: 220px;
            overflow: hidden;
        }

        .case-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .case-card-large:hover .case-card-image img {
            transform: scale(1.03);
        }

        .case-card-body {
            padding: 20px 24px 24px;
        }

        .case-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .case-card-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-muted);
            margin-bottom: 14px;
        }

        .case-card-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .case-card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 12px;
            color: var(--color-muted);
        }

        .case-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .case-side-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .case-side-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .case-side-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .case-side-card .case-side-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .case-side-card .case-side-desc {
            font-size: 13px;
            line-height: 1.65;
            color: var(--color-muted);
            margin-bottom: 10px;
        }

        .case-side-card .case-side-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--color-muted);
        }

        /* Brand Story Band */
        .brand-story-band {
            background: var(--color-primary-soft);
            padding: 40px 0;
            color: #FFFFFF;
        }

        .brand-story-content {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }

        .brand-story-text {
            flex: 1;
            min-width: 280px;
        }

        .brand-story-text h3 {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .brand-story-text p {
            font-size: 15px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.7);
            max-width: 480px;
        }

        .brand-story-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 16px;
            padding: 12px 22px;
            font-size: 14px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .brand-story-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
        }

        /* Solution Section */
        .solution-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .solution-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            cursor: pointer;
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .solution-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(232, 163, 61, 0.3);
        }

        .solution-card .solution-number {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-accent);
            font-family: 'Roboto Mono', monospace;
            letter-spacing: 1px;
        }

        .solution-card .solution-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
        }

        .solution-card .solution-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-muted);
        }

        .solution-card .solution-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent-hover);
            margin-top: auto;
            transition: gap 0.25s ease;
        }

        .solution-card:hover .solution-link {
            gap: 10px;
        }

        /* FAQ Section */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item.open {
            box-shadow: var(--shadow-card);
            border-color: rgba(232, 163, 61, 0.25);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            transition: all 0.25s ease;
        }

        .faq-question:hover {
            background: var(--color-surface-muted);
        }

        .faq-question .faq-icon {
            font-size: 18px;
            color: var(--color-muted);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--color-accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 240px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-muted);
        }

        /* Contact Section */
        .contact-section {
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .contact-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(27, 30, 36, 0.88);
            z-index: 1;
        }

        .contact-section .container {
            position: relative;
            z-index: 2;
        }

        .contact-section .section-title {
            color: #FFFFFF;
        }

        .contact-section .section-desc {
            color: rgba(255, 255, 255, 0.65);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 48px;
            align-items: flex-start;
        }

        .contact-info {
            color: #FFFFFF;
        }

        .contact-info-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            margin-bottom: 20px;
        }

        .contact-info-item .contact-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            background: rgba(255, 255, 255, 0.1);
            color: var(--color-accent);
            flex-shrink: 0;
        }

        .contact-info-item .contact-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 2px;
        }

        .contact-info-item .contact-value {
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
        }

        .contact-form-card {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
        }

        .contact-form-card .form-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            font-size: 15px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-input);
            color: var(--color-text);
            transition: all 0.25s ease;
            appearance: none;
            -webkit-appearance: none;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--color-highlight);
            box-shadow: 0 0 0 3px rgba(62, 198, 168, 0.18);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }

        .form-submit {
            width: 100%;
            padding: 14px 28px;
            font-size: 15px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .form-submit:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(232, 163, 61, 0.35);
        }

        .form-submit:focus-visible {
            outline: 3px solid var(--color-highlight);
            outline-offset: 2px;
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-logo .logo-icon-small {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #1B1E24;
            font-weight: 800;
        }

        .footer-about {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 260px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
        }

        .footer-col-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
            list-style: none;
        }

        .footer-col-links a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            transition: color 0.2s ease;
        }

        .footer-col-links a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
            transition: color 0.2s ease;
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Floating CTA Bar */
        .floating-cta {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%) translateY(120px);
            z-index: 90;
            background: var(--color-primary-soft);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 999px;
            padding: 10px 20px;
            display: flex;
            align-items: center;
            gap: 16px;
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
            transition: transform 0.4s ease;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .floating-cta.show {
            transform: translateX(-50%) translateY(0);
        }

        .floating-cta-text {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.85);
            white-space: nowrap;
        }

        .floating-cta-btn {
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: 999px;
            border: none;
            cursor: pointer;
            white-space: nowrap;
            transition: all 0.25s ease;
        }

        .floating-cta-btn:hover {
            background: var(--color-accent-hover);
            transform: scale(1.03);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 32px;
            }

            .hero-section .container {
                grid-template-columns: 1fr;
                gap: 36px;
                text-align: left;
            }

            .hero-visual {
                justify-content: flex-start;
            }

            .hero-visual-card {
                max-width: 100%;
            }

            .service-grid {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .case-grid {
                grid-template-columns: 1fr;
            }

            .solution-grid {
                grid-template-columns: 1fr;
            }

            .contact-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .mobile-toggle {
                display: block;
            }

            .hero-section {
                padding-top: 130px;
                padding-bottom: 56px;
                min-height: 500px;
            }

            .hero-title {
                font-size: 28px;
            }

            .hero-subtitle {
                font-size: 15px;
            }

            .hero-cta-group {
                flex-direction: column;
                align-items: flex-start;
            }

            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }

            .section {
                padding: 48px 0;
            }

            .section-title {
                font-size: 22px;
            }

            .service-main-card {
                min-height: auto;
                padding: 20px;
            }

            .service-card-image {
                height: 160px;
            }

            .topic-cloud {
                padding: 16px;
                gap: 8px;
            }

            .brand-story-content {
                flex-direction: column;
                gap: 20px;
            }

            .contact-form-card {
                padding: 24px 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .floating-cta {
                bottom: 12px;
                padding: 8px 14px;
                gap: 10px;
                border-radius: 16px;
                flex-wrap: nowrap;
            }

            .floating-cta-text {
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .hero-title {
                font-size: 24px;
            }

            .hero-stat-badge {
                font-size: 11px;
                padding: 4px 10px;
            }

            .hero-avatar {
                width: 44px;
                height: 44px;
                font-size: 18px;
                border-radius: 12px;
            }

            .service-main-card {
                padding: 16px;
            }

            .service-card-title {
                font-size: 17px;
            }

            .stats-hotlist {
                padding: 16px;
            }

            .case-card-body {
                padding: 16px;
            }

            .case-card-title {
                font-size: 16px;
            }

            .solution-card {
                padding: 18px 20px;
            }

            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }

            .contact-form-card {
                padding: 20px 16px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #1B1E24;
            --color-primary-soft: #262A33;
            --color-accent: #E8A33D;
            --color-accent-hover: #D18C2B;
            --color-highlight: #3EC6A8;
            --color-bg: #F5F4F0;
            --color-surface: #FFFFFF;
            --color-surface-muted: #EDECE7;
            --color-text: #22242B;
            --color-muted: #6B7280;
            --color-border: rgba(27, 30, 36, 0.10);
            --shadow-card: 0 6px 24px rgba(27, 30, 36, 0.08);
            --shadow-hover: 0 14px 40px rgba(27, 30, 36, 0.14);
            --radius-card: 16px;
            --radius-button: 12px;
            --radius-input: 10px;
        }

        :root {
            --color-primary: #1B1E24;
            --color-primary-soft: #262A33;
            --color-accent: #E8A33D;
            --color-accent-hover: #D18C2B;
            --color-highlight: #3EC6A8;
            --color-bg: #F5F4F0;
            --color-surface: #FFFFFF;
            --color-surface-muted: #EDECE7;
            --color-text: #22242B;
            --color-muted: #6B7280;
            --color-border: rgba(27, 30, 36, 0.10);
            --shadow-card: 0 6px 24px rgba(27, 30, 36, 0.08);
            --shadow-hover: 0 14px 40px rgba(27, 30, 36, 0.14);
            --radius-card: 16px;
            --radius-button: 12px;
            --radius-input: 10px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'system-ui', 'sans-serif';
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            min-height: 100vh;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(27, 30, 36, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
            box-shadow: 0 2px 20px rgba(27, 30, 36, 0.08);
            transition: all 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(27, 30, 36, 0.96);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 30px rgba(27, 30, 36, 0.2);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #1B1E24;
            font-weight: 800;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            border-radius: 8px;
            position: relative;
            white-space: nowrap;
            transition: all 0.25s ease;
        }

        .nav-links a:hover {
            color: var(--color-accent);
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-links a.active {
            color: #FFFFFF;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-highlight);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            font-size: 13px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            white-space: nowrap;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(232, 163, 61, 0.35);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #FFFFFF;
            font-size: 24px;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s ease;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            z-index: 99;
            background: rgba(27, 30, 36, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 4px;
            transform: translateY(-8px);
            opacity: 0;
            pointer-events: none;
            transition: all 0.3s ease;
        }

        .mobile-menu.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
            display: flex;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            border-radius: 10px;
            transition: all 0.2s ease;
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--color-accent);
        }

        .mobile-menu a.active {
            color: var(--color-accent);
            background: rgba(255, 255, 255, 0.05);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.4);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Hero */
        .page-hero {
            position: relative;
            background-image: linear-gradient(rgba(27, 30, 36, 0.82), rgba(27, 30, 36, 0.88)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding-top: 140px;
            padding-bottom: 80px;
            color: #FFFFFF;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to bottom, transparent, var(--color-bg));
            pointer-events: none;
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background: rgba(232, 163, 61, 0.18);
            border: 1px solid rgba(232, 163, 61, 0.4);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .page-hero h1 {
            font-size: 38px;
            line-height: 1.2;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .page-hero .hero-sub {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 720px;
            line-height: 1.8;
        }

        /* Section */
        .section {
            padding: 64px 0;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 8px;
            color: var(--color-text);
        }

        .section-sub {
            font-size: 15px;
            color: var(--color-muted);
            margin-bottom: 32px;
            max-width: 680px;
            line-height: 1.7;
        }

        /* Card base */
        .card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        /* Badge */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .badge-accent {
            background: rgba(232, 163, 61, 0.14);
            color: var(--color-accent-hover);
            border: 1px solid rgba(232, 163, 61, 0.3);
        }

        .badge-highlight {
            background: rgba(62, 198, 168, 0.12);
            color: #1F8A72;
            border: 1px solid rgba(62, 198, 168, 0.35);
        }

        .badge-primary {
            background: rgba(27, 30, 36, 0.08);
            color: var(--color-primary);
            border: 1px solid rgba(27, 30, 36, 0.15);
        }

        /* Button */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-button);
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
            text-decoration: none;
            line-height: 1.5;
        }

        .btn-primary {
            background: var(--color-accent);
            color: #1B1E24;
        }

        .btn-primary:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(232, 163, 61, 0.35);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid currentColor;
            color: var(--color-primary);
        }

        .btn-outline:hover {
            background: var(--color-surface-muted);
            transform: translateY(-1px);
        }

        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.4);
            color: #FFFFFF;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-1px);
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: 12px;
            background: var(--color-surface);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item.open {
            box-shadow: var(--shadow-card);
            border-color: rgba(62, 198, 168, 0.4);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--color-text);
            gap: 12px;
            user-select: none;
            transition: background 0.2s ease;
            border: none;
            background: none;
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            background: var(--color-surface-muted);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-surface-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--color-muted);
            transition: all 0.3s ease;
        }

        .faq-item.open .faq-icon {
            background: var(--color-highlight);
            color: #FFFFFF;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.8;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 18px;
        }

        /* Form */
        .form-input {
            width: 100%;
            padding: 12px 16px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-input);
            font-size: 14px;
            color: var(--color-text);
            transition: all 0.25s ease;
            outline: none;
            font-family: inherit;
        }

        .form-input:focus {
            border-color: var(--color-highlight);
            box-shadow: 0 0 0 3px rgba(62, 198, 168, 0.18);
        }

        .form-label {
            font-weight: 600;
            font-size: 13px;
            color: var(--color-text);
            margin-bottom: 6px;
            display: block;
        }

        .form-group {
            margin-bottom: 16px;
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 0;
        }

        .site-footer .container {
            padding-bottom: 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .footer-logo .logo-icon-small {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: #1B1E24;
            font-weight: 800;
        }

        .footer-about {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }

        .footer-col-title {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.4px;
        }

        .footer-col-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col-links li {
            margin-bottom: 8px;
        }

        .footer-col-links a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            transition: color 0.2s ease;
        }

        .footer-col-links a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color 0.2s ease;
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Tool panel */
        .tool-panel {
            background: var(--color-primary);
            color: #FFFFFF;
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
        }

        .tool-panel .form-label {
            color: rgba(255, 255, 255, 0.85);
        }

        .tool-panel .form-input {
            background: var(--color-primary-soft);
            border-color: rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
        }

        .tool-panel .form-input:focus {
            border-color: var(--color-highlight);
            box-shadow: 0 0 0 3px rgba(62, 198, 168, 0.25);
        }

        .tool-panel select.form-input option {
            background: var(--color-primary-soft);
            color: #FFFFFF;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
                gap: 32px;
            }

            .nav-links a {
                padding: 8px 10px;
                font-size: 13px;
            }

            .page-hero h1 {
                font-size: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .mobile-toggle {
                display: block;
            }

            .page-hero {
                padding-top: 120px;
                padding-bottom: 60px;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .section {
                padding: 48px 0;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .page-hero {
                padding-top: 110px;
                padding-bottom: 50px;
            }

            .page-hero h1 {
                font-size: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .section-title {
                font-size: 22px;
            }
        }

        /* Specific page styles */
        .rule-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--color-border);
        }

        .rule-item:last-child {
            border-bottom: none;
        }

        .rule-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(62, 198, 168, 0.1);
            color: var(--color-highlight);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }

        .rule-icon.accent {
            background: rgba(232, 163, 61, 0.12);
            color: var(--color-accent-hover);
        }

/* roulang page: category1 */
:root {
            --color-primary: #1B1E24;
            --color-primary-soft: #262A33;
            --color-accent: #E8A33D;
            --color-accent-hover: #D18C2B;
            --color-highlight: #3EC6A8;
            --color-bg: #F5F4F0;
            --color-surface: #FFFFFF;
            --color-surface-muted: #EDECE7;
            --color-text: #22242B;
            --color-muted: #6B7280;
            --color-border: rgba(27, 30, 36, 0.10);
            --shadow-card: 0 6px 24px rgba(27, 30, 36, 0.08);
            --shadow-hover: 0 14px 40px rgba(27, 30, 36, 0.14);
            --radius-card: 16px;
            --radius-button: 12px;
            --radius-input: 10px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'system-ui', 'sans-serif';
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            min-height: 100vh;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(27, 30, 36, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
            box-shadow: 0 2px 20px rgba(27, 30, 36, 0.08);
            transition: all 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(27, 30, 36, 0.96);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 30px rgba(27, 30, 36, 0.2);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #1B1E24;
            font-weight: 800;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            border-radius: 8px;
            position: relative;
            white-space: nowrap;
            transition: all 0.25s ease;
        }

        .nav-links a:hover {
            color: var(--color-accent);
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-links a.active {
            color: #FFFFFF;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-highlight);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            font-size: 13px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            white-space: nowrap;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(232, 163, 61, 0.35);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #FFFFFF;
            font-size: 24px;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s ease;
            flex-shrink: 0;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            z-index: 99;
            background: rgba(27, 30, 36, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 4px;
            transform: translateY(-8px);
            opacity: 0;
            pointer-events: none;
            transition: all 0.3s ease;
        }

        .mobile-menu.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
            display: flex;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            border-radius: 10px;
            transition: all 0.2s ease;
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--color-accent);
        }

        /* Hero */
        .page-hero {
            position: relative;
            padding: 120px 0 80px;
            background-color: var(--color-primary);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(27, 30, 36, 0.92) 0%, rgba(27, 30, 36, 0.78) 55%, rgba(27, 30, 36, 0.65) 100%);
        }

        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 80% 20%, rgba(232, 163, 61, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(62, 198, 168, 0.08) 0%, transparent 40%);
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.35);
        }

        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 500;
        }

        /* Hero content */
        .page-hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .page-hero-text h1 {
            font-size: 36px;
            line-height: 1.25;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .page-hero-text p {
            font-size: 16px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin-bottom: 24px;
        }

        /* Countdown */
        .countdown-box {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .countdown-box .countdown-title {
            font-size: 14px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .countdown-box .countdown-title i {
            color: var(--color-accent);
            font-size: 16px;
        }

        .countdown-digits {
            display: flex;
            gap: 12px;
            align-items: flex-end;
        }

        .countdown-item {
            text-align: center;
            flex: 1;
        }

        .countdown-item .digit {
            font-family: 'Roboto Mono', 'DIN Alternate', 'Inter', monospace;
            font-size: 32px;
            font-weight: 700;
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 8px;
            padding: 6px 10px;
            min-width: 52px;
            display: inline-block;
            line-height: 1.2;
        }

        .countdown-item .label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 6px;
            letter-spacing: 1px;
        }

        .subscribe-chip {
            margin-top: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .subscribe-chip .chip-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            font-size: 15px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(232, 163, 61, 0.35);
        }

        .btn-primary:focus-visible {
            outline: 3px solid var(--color-highlight);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 22px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--radius-button);
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.55);
        }

        /* Section spacing */
        .section {
            padding: 72px 0;
        }

        .section-header {
            margin-bottom: 36px;
        }

        .section-header h2 {
            font-size: 26px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }

        .section-header p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-muted);
            max-width: 680px;
        }

        /* Trend tabs */
        .trend-tabs {
            display: flex;
            gap: 4px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-button);
            padding: 4px;
            flex-wrap: wrap;
            margin-bottom: 32px;
            box-shadow: var(--shadow-card);
        }

        .trend-tab {
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-muted);
            background: transparent;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .trend-tab:hover {
            color: var(--color-text);
            background: var(--color-surface-muted);
        }

        .trend-tab.active {
            color: #FFFFFF;
            background: var(--color-primary);
            box-shadow: 0 2px 8px rgba(27, 30, 36, 0.2);
        }

        /* Trend grid */
        .trend-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
            align-items: start;
        }

        .trend-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .trend-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }

        .trend-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .trend-card .card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--color-surface-muted);
        }

        .trend-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .trend-card:hover .card-image img {
            transform: scale(1.03);
        }

        .trend-card .card-image .overlay-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            background: rgba(27, 30, 36, 0.75);
            color: #FFFFFF;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .trend-card .card-image .overlay-tag.hot {
            background: var(--color-accent);
            color: #1B1E24;
        }

        .trend-card .card-body {
            padding: 18px 20px;
        }

        .trend-card .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .trend-card .card-summary {
            font-size: 13px;
            color: var(--color-muted);
            line-height: 1.6;
            margin-bottom: 12px;
        }

        .trend-card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--color-muted);
        }

        .trend-card .card-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .trend-card .card-meta .meta-item i {
            color: var(--color-accent);
            font-size: 12px;
        }

        /* Stats row */
        .stats-row {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }

        .stat-chip {
            font-family: 'Roboto Mono', 'DIN Alternate', 'Inter', monospace;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            background: var(--color-surface-muted);
            color: var(--color-text);
            white-space: nowrap;
        }

        .stat-chip.accent {
            background: rgba(232, 163, 61, 0.15);
            color: #B8791F;
        }

        .stat-chip.highlight {
            background: rgba(62, 198, 168, 0.12);
            color: #2A9F86;
        }

        /* Hot list */
        .hot-list-panel {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            position: sticky;
            top: 100px;
        }

        .hot-list-panel h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hot-list-panel h3 i {
            color: var(--color-accent);
        }

        .hot-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hot-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 12px;
            border-radius: 10px;
            transition: background 0.2s ease;
            cursor: pointer;
        }

        .hot-list li:hover {
            background: var(--color-surface-muted);
        }

        .hot-list .rank {
            font-family: 'Roboto Mono', 'DIN Alternate', 'Inter', monospace;
            font-size: 15px;
            font-weight: 700;
            min-width: 28px;
            text-align: center;
            color: var(--color-muted);
        }

        .hot-list li:nth-child(1) .rank {
            color: var(--color-accent);
            font-size: 18px;
        }
        .hot-list li:nth-child(2) .rank {
            color: var(--color-highlight);
            font-size: 17px;
        }
        .hot-list li:nth-child(3) .rank {
            color: #B8791F;
            font-size: 16px;
        }

        .hot-list .item-name {
            flex: 1;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text);
        }

        .hot-list .item-count {
            font-family: 'Roboto Mono', 'DIN Alternate', 'Inter', monospace;
            font-size: 12px;
            color: var(--color-muted);
            white-space: nowrap;
        }

        /* Info cards */
        .info-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .info-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }

        .info-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .info-card .info-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(232, 163, 61, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-accent);
            margin-bottom: 14px;
        }

        .info-card .info-icon.highlight {
            background: rgba(62, 198, 168, 0.12);
            color: var(--color-highlight);
        }

        .info-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .info-card p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--color-muted);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 780px;
        }

        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item.open {
            box-shadow: var(--shadow-card);
            border-color: rgba(62, 198, 168, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            border: none;
            background: none;
            text-align: left;
            width: 100%;
            transition: color 0.2s ease;
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 14px;
            color: var(--color-muted);
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            color: var(--color-highlight);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-muted);
        }

        /* CTA Section */
        .cta-section {
            background: var(--color-primary);
            position: relative;
            overflow: hidden;
            padding: 64px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 75% 30%, rgba(232, 163, 61, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 15% 75%, rgba(62, 198, 168, 0.08) 0%, transparent 40%);
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-content {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
            justify-content: space-between;
        }

        .cta-text h2 {
            font-size: 27px;
            line-height: 1.3;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 8px;
        }

        .cta-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .footer-logo .logo-icon-small {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #1B1E24;
            font-weight: 800;
            flex-shrink: 0;
        }

        .footer-about {
            font-size: 13px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }

        .footer-col-title {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-col-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col-links a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            transition: color 0.2s ease;
        }

        .footer-col-links a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color 0.2s ease;
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .trend-grid {
                grid-template-columns: 1fr;
            }
            .hot-list-panel {
                position: static;
            }
            .info-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr 1fr;
            }
            .page-hero-content {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .site-header .container {
                height: 62px;
            }
            .mobile-menu {
                top: 62px;
            }
            .page-hero {
                padding: 96px 0 56px;
            }
            .page-hero-text h1 {
                font-size: 27px;
            }
            .trend-cards {
                grid-template-columns: 1fr;
            }
            .info-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                gap: 6px;
            }
            .section {
                padding: 56px 0;
            }
            .cta-content {
                flex-direction: column;
                text-align: center;
                gap: 20px;
            }
            .cta-text h2 {
                font-size: 22px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .countdown-digits {
                gap: 8px;
            }
            .countdown-item .digit {
                font-size: 22px;
                min-width: 40px;
                padding: 4px 6px;
            }
        }

        @media (max-width: 520px) {
            .page-hero-text h1 {
                font-size: 23px;
            }
            .page-hero-text p {
                font-size: 14px;
            }
            .trend-tabs {
                gap: 2px;
            }
            .trend-tab {
                padding: 8px 12px;
                font-size: 12px;
            }
            .countdown-item .digit {
                font-size: 18px;
                min-width: 34px;
                padding: 3px 4px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #1B1E24;
            --color-primary-soft: #262A33;
            --color-accent: #E8A33D;
            --color-accent-hover: #D18C2B;
            --color-highlight: #3EC6A8;
            --color-bg: #F5F4F0;
            --color-surface: #FFFFFF;
            --color-surface-muted: #EDECE7;
            --color-text: #22242B;
            --color-muted: #6B7280;
            --color-border: rgba(27, 30, 36, 0.10);
            --shadow-card: 0 6px 24px rgba(27, 30, 36, 0.08);
            --shadow-hover: 0 14px 40px rgba(27, 30, 36, 0.14);
            --radius-card: 16px;
            --radius-button: 12px;
            --radius-input: 10px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'system-ui', 'sans-serif';
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            min-height: 100vh;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(27, 30, 36, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
            box-shadow: 0 2px 20px rgba(27, 30, 36, 0.08);
            transition: all 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(27, 30, 36, 0.96);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 30px rgba(27, 30, 36, 0.2);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #1B1E24;
            font-weight: 800;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            border-radius: 8px;
            position: relative;
            white-space: nowrap;
            transition: all 0.25s ease;
        }

        .nav-links a:hover {
            color: var(--color-accent);
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-links a.active {
            color: #FFFFFF;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-highlight);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            font-size: 13px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            white-space: nowrap;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }

        .nav-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(232, 163, 61, 0.35);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #FFFFFF;
            font-size: 24px;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s ease;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            z-index: 99;
            background: rgba(27, 30, 36, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 4px;
            transform: translateY(-8px);
            opacity: 0;
            pointer-events: none;
            transition: all 0.3s ease;
        }

        .mobile-menu.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
            display: flex;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            border-radius: 10px;
            transition: all 0.2s ease;
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--color-accent);
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            padding-top: 100px;
            padding-bottom: 16px;
            background: var(--color-primary);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li + li::before {
            content: '/';
            color: rgba(255, 255, 255, 0.35);
            font-size: 12px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb li:last-child {
            color: var(--color-accent);
            font-weight: 500;
        }

        /* Page Banner */
        .page-banner {
            background: var(--color-primary);
            padding-bottom: 60px;
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(232, 163, 61, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-banner .container {
            position: relative;
            z-index: 1;
        }

        .page-banner h1 {
            font-size: 36px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.3;
            margin: 0 0 12px 0;
            letter-spacing: 0.5px;
        }

        .page-banner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            max-width: 680px;
            margin: 0;
            line-height: 1.8;
        }

        /* Pinned Notice */
        .pinned-section {
            padding: 40px 0 0;
            margin-top: -30px;
            position: relative;
            z-index: 2;
        }

        .pinned-card {
            background: var(--color-surface);
            border: 1px solid var(--color-accent);
            border-left: 5px solid var(--color-accent);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px 28px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
            transition: all 0.3s ease;
        }

        .pinned-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .pinned-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(232, 163, 61, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 20px;
            flex-shrink: 0;
        }

        .pinned-content {
            flex: 1;
        }

        .pinned-badge {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 999px;
            background: var(--color-accent);
            color: #1B1E24;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }

        .pinned-content h2 {
            font-size: 20px;
            font-weight: 700;
            margin: 0 0 8px 0;
            color: var(--color-text);
        }

        .pinned-content p {
            font-size: 15px;
            color: var(--color-muted);
            margin: 0 0 10px 0;
            line-height: 1.75;
        }

        .pinned-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--color-muted);
        }

        /* Main Content Layout */
        .announcement-main {
            padding: 60px 0 80px;
        }

        .main-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }

        /* Timeline */
        .timeline-section {
            min-width: 0;
        }

        .section-heading {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
        }

        .section-heading h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0;
        }

        .section-heading .count-badge {
            padding: 4px 14px;
            border-radius: 999px;
            background: var(--color-surface-muted);
            color: var(--color-muted);
            font-size: 13px;
            font-weight: 500;
        }

        .timeline {
            position: relative;
            padding-left: 28px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: var(--color-border);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding-bottom: 32px;
            padding-left: 8px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: -26px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--color-highlight);
            border: 3px solid #FFFFFF;
            box-shadow: 0 0 0 2px rgba(62, 198, 168, 0.25);
        }

        .timeline-dot.accent-dot {
            background: var(--color-accent);
            box-shadow: 0 0 0 2px rgba(232, 163, 61, 0.25);
        }

        .timeline-dot.primary-dot {
            background: var(--color-primary);
            box-shadow: 0 0 0 2px rgba(27, 30, 36, 0.2);
        }

        .tl-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            transition: all 0.3s ease;
        }

        .tl-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(232, 163, 61, 0.3);
        }

        .tl-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 10px;
            font-size: 13px;
            color: var(--color-muted);
        }

        .tl-meta .source-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 2px 10px;
            border-radius: 999px;
            background: var(--color-surface-muted);
            color: var(--color-muted);
            font-size: 12px;
            font-weight: 500;
        }

        .tl-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin: 0 0 8px 0;
            color: var(--color-text);
            line-height: 1.45;
        }

        .tl-card p {
            font-size: 14.5px;
            color: var(--color-muted);
            margin: 0 0 12px 0;
            line-height: 1.75;
        }

        .tl-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .tl-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(62, 198, 168, 0.1);
            color: #2A9D8A;
        }

        .tl-tag.amber-tag {
            background: rgba(232, 163, 61, 0.1);
            color: #B87B1E;
        }

        .tl-tag.dark-tag {
            background: rgba(27, 30, 36, 0.06);
            color: var(--color-muted);
        }

        /* Sidebar */
        .sidebar {
            min-width: 0;
        }

        .sidebar-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            margin-bottom: 24px;
            box-shadow: var(--shadow-card);
        }

        .sidebar-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 16px 0;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-border);
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .cloud-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            background: var(--color-surface-muted);
            color: var(--color-text);
            transition: all 0.25s ease;
            cursor: pointer;
        }

        .cloud-tag:hover {
            background: var(--color-accent);
            color: #1B1E24;
            transform: translateY(-1px);
        }

        .cloud-tag.hot-tag {
            background: rgba(232, 163, 61, 0.15);
            color: #B87B1E;
            font-weight: 600;
        }

        .hot-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .hot-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 8px;
            border-radius: 8px;
            transition: background 0.2s ease;
            cursor: pointer;
        }

        .hot-list li:hover {
            background: var(--color-surface-muted);
        }

        .hot-rank {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 700;
            font-family: 'Roboto Mono', 'DIN Alternate', 'Inter', monospace;
            background: var(--color-surface-muted);
            color: var(--color-muted);
            flex-shrink: 0;
        }

        .hot-rank.rank-1 {
            background: var(--color-accent);
            color: #1B1E24;
        }

        .hot-rank.rank-2 {
            background: rgba(232, 163, 61, 0.3);
            color: #B87B1E;
        }

        .hot-rank.rank-3 {
            background: rgba(62, 198, 168, 0.25);
            color: #2A9D8A;
        }

        .hot-list .hot-text {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.5;
            flex: 1;
        }

        .hot-list .hot-count {
            font-size: 12px;
            color: var(--color-muted);
            font-family: 'Roboto Mono', 'DIN Alternate', 'Inter', monospace;
            flex-shrink: 0;
        }

        /* Subscribe CTA */
        .subscribe-section {
            padding: 0 0 80px;
        }

        .subscribe-card {
            background: var(--color-primary);
            border-radius: var(--radius-card);
            padding: 44px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .subscribe-card::after {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(232, 163, 61, 0.18) 0%, transparent 70%);
            pointer-events: none;
            border-radius: 50%;
        }

        .subscribe-card > div {
            position: relative;
            z-index: 1;
        }

        .subscribe-card h2 {
            font-size: 24px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 8px 0;
        }

        .subscribe-card p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.65);
            margin: 0;
            max-width: 500px;
            line-height: 1.75;
        }

        .subscribe-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            font-size: 15px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            white-space: nowrap;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            z-index: 1;
        }

        .subscribe-btn:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 163, 61, 0.35);
        }

        /* FAQ */
        .faq-section {
            padding: 0 0 80px;
        }

        .faq-section .section-heading {
            margin-bottom: 24px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(232, 163, 61, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15.5px;
            font-weight: 600;
            color: var(--color-text);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color 0.2s ease;
            gap: 12px;
        }

        .faq-question:hover {
            color: var(--color-accent-hover);
        }

        .faq-question .fa-chevron-down {
            transition: transform 0.35s ease;
            color: var(--color-muted);
            font-size: 14px;
            flex-shrink: 0;
        }

        .faq-item.active .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--color-accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 20px;
            font-size: 14.5px;
            color: var(--color-muted);
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .faq-item.active {
            box-shadow: var(--shadow-card);
            border-color: rgba(62, 198, 168, 0.25);
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 50px 0 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .logo-icon-small {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #1B1E24;
            font-weight: 800;
        }

        .footer-about {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.75;
            max-width: 280px;
            margin: 0;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
        }

        .footer-col-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col-links a {
            font-size: 13.5px;
            color: rgba(255, 255, 255, 0.55);
            transition: color 0.2s ease;
        }

        .footer-col-links a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12.5px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .main-grid {
                grid-template-columns: 1fr;
            }

            .sidebar {
                order: -1;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .footer-grid > div:first-child {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .mobile-toggle {
                display: block;
            }

            .page-banner h1 {
                font-size: 28px;
            }

            .page-banner p {
                font-size: 14.5px;
            }

            .breadcrumb-wrap {
                padding-top: 84px;
            }

            .page-banner {
                padding-bottom: 40px;
            }

            .pinned-card {
                flex-direction: column;
                padding: 20px;
            }

            .timeline {
                padding-left: 24px;
            }

            .timeline-dot {
                left: -22px;
            }

            .subscribe-card {
                flex-direction: column;
                align-items: flex-start;
                padding: 32px 24px;
                gap: 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-grid > div:first-child {
                grid-column: auto;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .breadcrumb-wrap {
                padding-top: 78px;
            }

            .page-banner h1 {
                font-size: 24px;
            }

            .section-heading {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .section-heading h2 {
                font-size: 22px;
            }

            .tl-card {
                padding: 16px 18px;
            }

            .tl-card h3 {
                font-size: 16px;
            }

            .pinned-content h2 {
                font-size: 17px;
            }

            .announcement-main {
                padding: 40px 0 60px;
            }

            .subscribe-section {
                padding-bottom: 60px;
            }

            .faq-section {
                padding-bottom: 60px;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #1B1E24;
            --color-primary-soft: #262A33;
            --color-accent: #E8A33D;
            --color-accent-hover: #D18C2B;
            --color-highlight: #3EC6A8;
            --color-bg: #F5F4F0;
            --color-surface: #FFFFFF;
            --color-surface-muted: #EDECE7;
            --color-text: #22242B;
            --color-muted: #6B7280;
            --color-border: rgba(27, 30, 36, 0.10);
            --shadow-card: 0 6px 24px rgba(27, 30, 36, 0.08);
            --shadow-hover: 0 14px 40px rgba(27, 30, 36, 0.14);
            --radius-card: 16px;
            --radius-button: 12px;
            --radius-input: 10px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'system-ui', 'sans-serif';
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            min-height: 100vh;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(27, 30, 36, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
            box-shadow: 0 2px 20px rgba(27, 30, 36, 0.08);
            transition: all 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(27, 30, 36, 0.96);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 30px rgba(27, 30, 36, 0.2);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #1B1E24;
            font-weight: 800;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            border-radius: 8px;
            position: relative;
            white-space: nowrap;
            transition: all 0.25s ease;
        }

        .nav-links a:hover {
            color: var(--color-accent);
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-links a.active {
            color: #FFFFFF;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-highlight);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            font-size: 13px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            white-space: nowrap;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }

        .nav-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(232, 163, 61, 0.35);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #FFFFFF;
            font-size: 24px;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s ease;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            z-index: 99;
            background: rgba(27, 30, 36, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 4px;
            transform: translateY(-8px);
            opacity: 0;
            pointer-events: none;
            transition: all 0.3s ease;
        }

        .mobile-menu.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
            display: flex;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            border-radius: 10px;
            transition: all 0.2s ease;
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--color-accent);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-muted);
            padding: 24px 0 0;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-muted);
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .sep {
            color: var(--color-border);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 600;
        }

        /* Category Hero */
        .category-hero {
            padding: 56px 0 40px;
            position: relative;
        }

        .category-hero .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: rgba(62, 198, 168, 0.12);
            color: #1B6B5A;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .category-hero h1 {
            font-size: 36px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .category-hero .hero-sub {
            font-size: 17px;
            line-height: 1.85;
            color: var(--color-muted);
            max-width: 680px;
        }

        /* Section headings */
        .section-heading {
            margin-bottom: 32px;
        }

        .section-heading h2 {
            font-size: 26px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }

        .section-heading p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-muted);
            max-width: 620px;
        }

        /* Case cards - alternating layout */
        .case-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            display: grid;
            grid-template-columns: 1fr 1fr;
            margin-bottom: 32px;
        }

        .case-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .case-card .case-image {
            position: relative;
            min-height: 300px;
            overflow: hidden;
            background: var(--color-surface-muted);
        }

        .case-card .case-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .case-card:hover .case-image img {
            transform: scale(1.04);
        }

        .case-card .case-image .img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(27, 30, 36, 0) 50%, rgba(27, 30, 36, 0.35) 100%);
            pointer-events: none;
        }

        .case-card .case-image .case-index {
            position: absolute;
            top: 18px;
            left: 18px;
            font-family: 'Roboto Mono', monospace;
            font-size: 14px;
            font-weight: 700;
            color: #FFFFFF;
            background: rgba(27, 30, 36, 0.7);
            border-radius: 999px;
            padding: 4px 14px;
            letter-spacing: 0.5px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .case-card .case-image .case-time-badge {
            position: absolute;
            bottom: 18px;
            left: 18px;
            font-size: 12px;
            font-weight: 500;
            color: #FFFFFF;
            background: rgba(27, 30, 36, 0.6);
            border-radius: 999px;
            padding: 4px 12px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .case-card .case-body {
            padding: 28px 28px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 14px;
        }

        .case-card .case-body .case-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .case-card .case-body .case-tag {
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(232, 163, 61, 0.12);
            color: #A8680F;
            letter-spacing: 0.3px;
        }

        .case-card .case-body .case-tag.highlight-tag {
            background: rgba(62, 198, 168, 0.12);
            color: #1B6B5A;
        }

        .case-card .case-body h3 {
            font-size: 20px;
            line-height: 1.4;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.2px;
        }

        .case-card .case-body p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-muted);
        }

        .case-card .case-data-points {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            padding-top: 10px;
            border-top: 1px solid var(--color-border);
        }

        .case-card .case-data-points .dp-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .case-card .case-data-points .dp-label {
            font-size: 12px;
            font-weight: 500;
            color: var(--color-muted);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .case-card .case-data-points .dp-value {
            font-family: 'Roboto Mono', monospace;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.3px;
        }

        .case-card .case-data-points .dp-value.accent-value {
            color: var(--color-accent);
        }

        .case-card .case-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            transition: all 0.25s ease;
            margin-top: 4px;
        }

        .case-card .case-link:hover {
            color: var(--color-accent-hover);
            gap: 10px;
        }

        /* Alternating direction */
        .case-card.reverse .case-image {
            order: 2;
        }
        .case-card.reverse .case-body {
            order: 1;
        }

        /* Data overview strip */
        .data-strip {
            background: var(--color-primary);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            margin: 48px 0;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            box-shadow: var(--shadow-card);
        }

        .data-strip .ds-item {
            text-align: center;
        }

        .data-strip .ds-item .ds-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(232, 163, 61, 0.18);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 20px;
            color: var(--color-accent);
        }

        .data-strip .ds-item .ds-value {
            font-family: 'Roboto Mono', monospace;
            font-size: 28px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            line-height: 1.2;
        }

        .data-strip .ds-item .ds-label {
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 6px;
        }

        /* Pagination */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 40px 0 20px;
            flex-wrap: wrap;
        }

        .pagination .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            transition: all 0.25s ease;
            cursor: pointer;
            user-select: none;
        }

        .pagination .page-btn:hover {
            background: var(--color-surface-muted);
            border-color: var(--color-accent);
            color: var(--color-accent);
        }

        .pagination .page-btn.active {
            background: var(--color-primary);
            color: #FFFFFF;
            border-color: var(--color-primary);
        }

        .pagination .page-btn.prev-next {
            min-width: 56px;
            padding: 0 16px;
            font-size: 13px;
        }

        .pagination .page-dots {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            color: var(--color-muted);
            font-size: 14px;
            font-weight: 600;
            user-select: none;
        }

        /* Bottom CTA */
        .bottom-cta {
            background: var(--color-primary);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            margin: 56px 0 80px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .bottom-cta::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(232, 163, 61, 0.15) 0%, transparent 70%);
            pointer-events: none;
            border-radius: 50%;
        }

        .bottom-cta .cta-text h3 {
            font-size: 24px;
            line-height: 1.35;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 8px;
        }

        .bottom-cta .cta-text p {
            font-size: 15px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 520px;
        }

        .bottom-cta .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            font-size: 15px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            white-space: nowrap;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            z-index: 1;
        }

        .bottom-cta .cta-btn:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(232, 163, 61, 0.4);
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 32px;
            margin-top: 80px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .site-footer .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
        }

        .site-footer .logo-icon-small {
            width: 36px;
            height: 36px;
            border-radius: 9px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #1B1E24;
            font-weight: 800;
            flex-shrink: 0;
        }

        .site-footer .footer-about {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 300px;
        }

        .site-footer .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

        .site-footer .footer-col-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .site-footer .footer-col-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.2s ease;
        }

        .site-footer .footer-col-links a:hover {
            color: var(--color-accent);
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .site-footer .footer-bottom .footer-domain {
            font-family: 'Roboto Mono', monospace;
            color: rgba(255, 255, 255, 0.45);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .case-card {
                grid-template-columns: 1fr;
            }
            .case-card .case-image {
                min-height: 240px;
                order: 1 !important;
            }
            .case-card .case-body {
                order: 2 !important;
            }
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .category-hero {
                padding: 40px 0 28px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .breadcrumb {
                font-size: 13px;
                padding-top: 16px;
            }
            .case-card .case-body {
                padding: 20px;
            }
            .case-card .case-body h3 {
                font-size: 18px;
            }
            .case-card .case-data-points {
                gap: 12px;
            }
            .bottom-cta {
                padding: 32px 24px;
                flex-direction: column;
                align-items: flex-start;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer {
                padding: 40px 0 24px;
            }
            .data-strip {
                grid-template-columns: 1fr 1fr;
                padding: 28px 20px;
                gap: 16px;
            }
            .data-strip .ds-item .ds-value {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero .hero-sub {
                font-size: 15px;
            }
            .data-strip {
                grid-template-columns: 1fr;
                gap: 20px;
                padding: 24px 16px;
            }
            .case-card .case-image {
                min-height: 200px;
            }
            .case-card .case-body {
                padding: 16px;
            }
            .case-card .case-data-points .dp-value {
                font-size: 14px;
            }
            .pagination .page-btn {
                min-width: 34px;
                height: 36px;
                font-size: 13px;
                padding: 0 8px;
            }
            .pagination .page-btn.prev-next {
                min-width: 48px;
                font-size: 12px;
                padding: 0 10px;
            }
            .breadcrumb {
                font-size: 12px;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #1B1E24;
            --color-primary-soft: #262A33;
            --color-accent: #E8A33D;
            --color-accent-hover: #D18C2B;
            --color-highlight: #3EC6A8;
            --color-bg: #F5F4F0;
            --color-surface: #FFFFFF;
            --color-surface-muted: #EDECE7;
            --color-text: #22242B;
            --color-muted: #6B7280;
            --color-border: rgba(27, 30, 36, 0.10);
            --shadow-card: 0 6px 24px rgba(27, 30, 36, 0.08);
            --shadow-hover: 0 14px 40px rgba(27, 30, 36, 0.14);
            --radius-card: 16px;
            --radius-button: 12px;
            --radius-input: 10px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'system-ui', 'sans-serif';
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            min-height: 100vh;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(27, 30, 36, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
            box-shadow: 0 2px 20px rgba(27, 30, 36, 0.08);
            transition: all 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(27, 30, 36, 0.96);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 30px rgba(27, 30, 36, 0.2);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #1B1E24;
            font-weight: 800;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            border-radius: 8px;
            position: relative;
            white-space: nowrap;
            transition: all 0.25s ease;
        }

        .nav-links a:hover {
            color: var(--color-accent);
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-links a.active {
            color: #FFFFFF;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-highlight);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            font-size: 13px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            white-space: nowrap;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }

        .nav-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(232, 163, 61, 0.35);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #FFFFFF;
            font-size: 24px;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s ease;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            z-index: 99;
            background: rgba(27, 30, 36, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 4px;
            transform: translateY(-8px);
            opacity: 0;
            pointer-events: none;
            transition: all 0.3s ease;
        }

        .mobile-menu.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
            display: flex;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            border-radius: 10px;
            transition: all 0.2s ease;
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--color-accent);
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            padding-top: 100px;
            padding-bottom: 16px;
            background: var(--color-primary);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.4);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--color-highlight);
            font-weight: 600;
        }

        /* Hero */
        .support-hero {
            background: var(--color-primary);
            padding: 48px 0 72px;
            position: relative;
            overflow: hidden;
        }

        .support-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            pointer-events: none;
        }

        .support-hero .container {
            position: relative;
            z-index: 1;
        }

        .support-hero h1 {
            font-size: 36px;
            line-height: 1.25;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }

        .support-hero .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            margin: 0;
        }

        .hero-badge-group {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 20px;
        }

        .hero-badge-group .badge-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 999px;
            white-space: nowrap;
        }

        /* Main layout */
        .support-main {
            padding: 64px 0 80px;
        }

        .support-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }

        /* Left column - FAQ */
        .faq-panel {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
        }

        .faq-panel-header {
            padding: 24px 28px;
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .faq-panel-header .faq-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(62, 198, 168, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-highlight);
            font-size: 18px;
            flex-shrink: 0;
        }

        .faq-panel-header h2 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0;
        }

        .faq-accordion-item {
            border-bottom: 1px solid var(--color-border);
        }

        .faq-accordion-item:last-child {
            border-bottom: none;
        }

        .faq-accordion-trigger {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 28px;
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            transition: background 0.25s ease;
        }

        .faq-accordion-trigger:hover {
            background: var(--color-surface-muted);
        }

        .faq-accordion-trigger .faq-question {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.6;
        }

        .faq-accordion-trigger .faq-toggle-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--color-surface-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-muted);
            font-size: 12px;
            transition: all 0.3s ease;
        }

        .faq-accordion-item.open .faq-toggle-icon {
            background: rgba(62, 198, 168, 0.15);
            color: var(--color-highlight);
            transform: rotate(180deg);
        }

        .faq-accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 28px;
        }

        .faq-accordion-item.open .faq-accordion-content {
            max-height: 300px;
            padding: 0 28px 20px;
        }

        .faq-accordion-content p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-muted);
            margin: 0;
        }

        /* Contact info card */
        .contact-info-card {
            background: var(--color-primary);
            border-radius: var(--radius-card);
            padding: 28px;
            color: #FFFFFF;
            margin-top: 24px;
            position: relative;
            overflow: hidden;
        }

        .contact-info-card::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(232, 163, 61, 0.15);
            pointer-events: none;
        }

        .contact-info-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin: 0 0 16px;
            position: relative;
            z-index: 1;
        }

        .contact-list {
            list-style: none;
            padding: 0;
            margin: 0;
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .contact-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.85);
        }

        .contact-list li .contact-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 13px;
            margin-top: 2px;
        }

        /* Right column - form */
        .form-panel {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            padding: 32px 28px;
            position: relative;
            overflow: hidden;
        }

        .form-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-highlight));
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }

        .form-panel-header {
            margin-bottom: 24px;
        }

        .form-panel-header h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 8px;
        }

        .form-panel-header p {
            font-size: 14px;
            color: var(--color-muted);
            margin: 0;
            line-height: 1.7;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .form-group label .required {
            color: #D64545;
            margin-left: 2px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            font-size: 14px;
            color: var(--color-text);
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-input);
            transition: all 0.25s ease;
            outline: none;
            box-sizing: border-box;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--color-highlight);
            box-shadow: 0 0 0 3px rgba(62, 198, 168, 0.18);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 120px;
        }

        .form-group select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236B7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            padding-right: 40px;
        }

        .form-error-hint {
            display: none;
            font-size: 13px;
            color: #D64545;
            margin-top: 4px;
        }

        .form-group.has-error input,
        .form-group.has-error textarea,
        .form-group.has-error select {
            border-color: #D64545;
        }

        .form-group.has-error .form-error-hint {
            display: block;
        }

        .form-submit-btn {
            width: 100%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 24px;
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            background: var(--color-accent);
            border: none;
            border-radius: var(--radius-button);
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .form-submit-btn:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 163, 61, 0.35);
        }

        .form-submit-btn:focus-visible {
            outline: 3px solid var(--color-highlight);
            outline-offset: 2px;
        }

        .form-success-message {
            display: none;
            padding: 16px 20px;
            background: rgba(62, 198, 168, 0.12);
            border: 1px solid rgba(62, 198, 168, 0.3);
            border-radius: var(--radius-input);
            font-size: 14px;
            color: #1B9E85;
            margin-top: 16px;
            text-align: center;
        }

        .form-success-message.visible {
            display: block;
        }

        /* Helper cards row */
        .helper-cards-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 56px;
        }

        .helper-card {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            padding: 24px;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .helper-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .helper-card .helper-card-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .helper-card .helper-card-icon.amber {
            background: rgba(232, 163, 61, 0.12);
            color: var(--color-accent);
        }

        .helper-card .helper-card-icon.green {
            background: rgba(62, 198, 168, 0.12);
            color: var(--color-highlight);
        }

        .helper-card .helper-card-icon.dark {
            background: rgba(27, 30, 36, 0.06);
            color: var(--color-primary);
        }

        .helper-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0;
        }

        .helper-card p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--color-muted);
            margin: 0;
            flex-grow: 1;
        }

        .helper-card a {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.2s ease;
        }

        .helper-card a:hover {
            color: var(--color-accent-hover);
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
        }

        .logo-icon-small {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #1B1E24;
            font-weight: 800;
            flex-shrink: 0;
        }

        .footer-about {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 300px;
            margin: 0;
        }

        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

        .footer-col-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col-links a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.2s ease;
        }

        .footer-col-links a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
            line-height: 1.8;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.2s ease;
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .support-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .helper-cards-row {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .mobile-toggle {
                display: block;
            }

            .support-hero h1 {
                font-size: 28px;
            }

            .support-hero .hero-subtitle {
                font-size: 15px;
            }

            .support-main {
                padding: 40px 0 56px;
            }

            .form-panel {
                padding: 24px 20px;
            }

            .faq-panel-header {
                padding: 20px;
            }

            .faq-accordion-trigger {
                padding: 16px 20px;
            }

            .faq-accordion-content {
                padding: 0 20px;
            }

            .faq-accordion-item.open .faq-accordion-content {
                padding: 0 20px 16px;
            }

            .helper-cards-row {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .breadcrumb-bar {
                padding-top: 88px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .support-hero h1 {
                font-size: 24px;
            }

            .hero-badge-group .badge-item {
                font-size: 12px;
                padding: 5px 10px;
            }

            .form-panel h2 {
                font-size: 18px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-about {
                max-width: 100%;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #1B1E24;
            --color-primary-soft: #262A33;
            --color-accent: #E8A33D;
            --color-accent-hover: #D18C2B;
            --color-highlight: #3EC6A8;
            --color-bg: #F5F4F0;
            --color-surface: #FFFFFF;
            --color-surface-muted: #EDECE7;
            --color-text: #22242B;
            --color-muted: #6B7280;
            --color-border: rgba(27, 30, 36, 0.10);
            --shadow-card: 0 6px 24px rgba(27, 30, 36, 0.08);
            --shadow-hover: 0 14px 40px rgba(27, 30, 36, 0.14);
            --radius-card: 16px;
            --radius-button: 12px;
            --radius-input: 10px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'system-ui', 'sans-serif';
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            min-height: 100vh;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(27, 30, 36, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
            box-shadow: 0 2px 20px rgba(27, 30, 36, 0.08);
            transition: all 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(27, 30, 36, 0.96);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 30px rgba(27, 30, 36, 0.2);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .logo .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #1B1E24;
            font-weight: 800;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            border-radius: 8px;
            position: relative;
            white-space: nowrap;
            transition: all 0.25s ease;
        }

        .nav-links a:hover {
            color: var(--color-accent);
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-links a.active {
            color: #FFFFFF;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-highlight);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            font-size: 13px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            white-space: nowrap;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }

        .nav-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(232, 163, 61, 0.35);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #FFFFFF;
            font-size: 24px;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s ease;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            z-index: 99;
            background: rgba(27, 30, 36, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 4px;
            transform: translateY(-8px);
            opacity: 0;
            pointer-events: none;
            transition: all 0.3s ease;
        }

        .mobile-menu.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
            display: flex;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            border-radius: 10px;
            transition: all 0.2s ease;
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--color-accent);
        }

        /* Hero */
        .hero-member {
            position: relative;
            padding: 140px 0 80px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            color: #FFFFFF;
            overflow: hidden;
        }

        .hero-member::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(27, 30, 36, 0.88) 0%, rgba(27, 30, 36, 0.72) 50%, rgba(27, 30, 36, 0.85) 100%);
            z-index: 1;
        }

        .hero-member .container {
            position: relative;
            z-index: 2;
        }

        .hero-member-grid {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-member-title {
            font-size: 40px;
            line-height: 1.2;
            font-weight: 700;
            margin: 0 0 16px;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }

        .hero-member-title .highlight-accent {
            color: var(--color-accent);
        }

        .hero-member-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin: 0 0 28px;
            max-width: 540px;
        }

        .hero-member-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(232, 163, 61, 0.35);
        }

        .btn-primary:focus-visible {
            outline: 3px solid var(--color-highlight);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.6);
            border-radius: var(--radius-button);
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.9);
            transform: translateY(-2px);
        }

        .btn-secondary:focus-visible {
            outline: 3px solid var(--color-highlight);
            outline-offset: 2px;
        }

        .hero-value-card {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
        }

        .hero-value-card .value-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hero-value-card .value-item:last-child {
            border-bottom: none;
        }

        .hero-value-card .value-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(232, 163, 61, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--color-accent);
            flex-shrink: 0;
        }

        .hero-value-card .value-text {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.6;
        }

        .hero-value-card .value-text strong {
            color: #FFFFFF;
            font-weight: 600;
            display: block;
            font-size: 15px;
            margin-bottom: 2px;
        }

        /* Section Common */
        .section {
            padding: 80px 0;
        }

        .section-sm {
            padding: 56px 0;
        }

        .section-title {
            font-size: 28px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 8px;
            letter-spacing: 0.3px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--color-muted);
            margin: 0 0 32px;
            max-width: 640px;
            line-height: 1.7;
        }

        .section-head {
            margin-bottom: 36px;
        }

        .section-head .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(232, 163, 61, 0.12);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        /* Cards */
        .card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(232, 163, 61, 0.3);
        }

        .card-padded {
            padding: 24px;
        }

        .card-accent-left {
            border-left: 3px solid var(--color-accent);
        }

        .card-highlight-left {
            border-left: 3px solid var(--color-highlight);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            background: var(--color-surface-muted);
            color: var(--color-muted);
            white-space: nowrap;
        }

        .badge-accent {
            background: rgba(232, 163, 61, 0.15);
            color: #B87A1A;
        }

        .badge-highlight {
            background: rgba(62, 198, 168, 0.15);
            color: #1E9E83;
        }

        .badge-primary {
            background: rgba(27, 30, 36, 0.1);
            color: var(--color-primary);
        }

        .badge-hot {
            background: rgba(211, 85, 69, 0.12);
            color: #C04B35;
        }

        .data-number {
            font-family: 'Roboto Mono', 'DIN Alternate', 'Inter', monospace;
            font-variant-numeric: tabular-nums;
            letter-spacing: 0.02em;
        }

        /* Benefit Grid - Asymmetric */
        .benefit-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 20px;
        }

        .benefit-card-large {
            background: var(--color-primary);
            color: #FFFFFF;
            border: none;
            min-height: 260px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 28px;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .benefit-card-large::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(232, 163, 61, 0.12);
            pointer-events: none;
        }

        .benefit-card-large:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .benefit-card-large .benefit-title {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 8px;
            position: relative;
            z-index: 1;
        }

        .benefit-card-large .benefit-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.7;
            margin: 0 0 16px;
            position: relative;
            z-index: 1;
        }

        .benefit-card-large .benefit-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            position: relative;
            z-index: 1;
        }

        .benefit-card-large .benefit-tags .badge {
            background: rgba(255, 255, 255, 0.12);
            color: rgba(255, 255, 255, 0.9);
        }

        .benefit-card-large .benefit-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            margin-top: 16px;
            position: relative;
            z-index: 1;
            transition: color 0.2s ease;
        }

        .benefit-card-large .benefit-link:hover {
            color: var(--color-accent-hover);
        }

        .benefit-card-small {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .benefit-card-small:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(232, 163, 61, 0.25);
        }

        .benefit-card-small .benefit-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(232, 163, 61, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-accent);
            margin-bottom: 4px;
        }

        .benefit-card-small .benefit-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0;
        }

        .benefit-card-small .benefit-desc {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin: 0;
        }

        .benefit-card-small .benefit-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 4px;
        }

        /* Comparison Bars */
        .compare-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .compare-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            box-shadow: 0 2px 8px rgba(27, 30, 36, 0.04);
            transition: all 0.3s ease;
            display: grid;
            grid-template-columns: 160px 1fr 1fr;
            gap: 20px;
            align-items: center;
        }

        .compare-item:hover {
            box-shadow: var(--shadow-card);
            border-color: rgba(232, 163, 61, 0.2);
        }

        .compare-label {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text);
        }

        .compare-option {
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 14px;
            line-height: 1.7;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .compare-option .compare-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            flex-shrink: 0;
            margin-top: 3px;
        }

        .compare-option-standard {
            background: var(--color-surface-muted);
            color: var(--color-muted);
        }

        .compare-option-standard .compare-icon {
            background: rgba(107, 114, 128, 0.2);
            color: var(--color-muted);
        }

        .compare-option-member {
            background: rgba(232, 163, 61, 0.08);
            color: var(--color-text);
            border: 1px solid rgba(232, 163, 61, 0.25);
        }

        .compare-option-member .compare-icon {
            background: var(--color-accent);
            color: #1B1E24;
        }

        /* Scenario Cards - Asymmetric */
        .scenario-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 20px;
        }

        .scenario-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .scenario-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .scenario-card .scenario-image {
            height: 160px;
            overflow: hidden;
            position: relative;
        }

        .scenario-card .scenario-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .scenario-card:hover .scenario-image img {
            transform: scale(1.03);
        }

        .scenario-card .scenario-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .scenario-card .scenario-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 6px;
        }

        .scenario-card .scenario-desc {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin: 0 0 12px;
            flex: 1;
        }

        .scenario-card .scenario-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-muted);
        }

        /* Steps */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            position: relative;
            counter-increment: step;
        }

        .step-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .step-item::before {
            content: counter(step);
            font-family: 'Roboto Mono', 'DIN Alternate', 'Inter', monospace;
            font-size: 36px;
            font-weight: 700;
            color: rgba(232, 163, 61, 0.3);
            display: block;
            margin-bottom: 12px;
            line-height: 1;
        }

        .step-item .step-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 6px;
        }

        .step-item .step-desc {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 0;
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 2px 8px rgba(27, 30, 36, 0.04);
        }

        .faq-item.open {
            box-shadow: var(--shadow-hover);
            border-color: rgba(232, 163, 61, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 16px 20px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            transition: all 0.2s ease;
        }

        .faq-question:hover {
            color: var(--color-accent);
            background: rgba(232, 163, 61, 0.04);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-surface-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--color-muted);
            transition: all 0.3s ease;
        }

        .faq-item.open .faq-icon {
            background: var(--color-accent);
            color: #1B1E24;
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 16px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.8;
            margin: 0;
        }

        /* Contact / CTA Form */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 32px;
            align-items: start;
        }

        .contact-info {
            background: var(--color-primary);
            border-radius: var(--radius-card);
            padding: 32px;
            color: #FFFFFF;
            box-shadow: var(--shadow-card);
        }

        .contact-info .contact-title {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 8px;
        }

        .contact-info .contact-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin: 0 0 20px;
        }

        .contact-info .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .contact-info .contact-item:last-child {
            border-bottom: none;
        }

        .contact-info .contact-item .contact-icon {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: rgba(232, 163, 61, 0.18);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: var(--color-accent);
            flex-shrink: 0;
        }

        .contact-info .contact-item .contact-text {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.6;
        }

        .contact-form-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }

        .contact-form-card .form-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 20px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .form-input,
        .form-select,
        .form-textarea {
            width: 100%;
            padding: 12px 16px;
            font-size: 14px;
            color: var(--color-text);
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-input);
            transition: all 0.25s ease;
            outline: none;
            box-sizing: border-box;
        }

        .form-input:focus,
        .form-select:focus,
        .form-textarea:focus {
            border-color: var(--color-highlight);
            box-shadow: 0 0 0 3px rgba(62, 198, 168, 0.18);
        }

        .form-textarea {
            min-height: 100px;
            resize: vertical;
        }

        .form-error {
            font-size: 13px;
            color: #D64545;
            margin-top: 4px;
            display: none;
        }

        .form-submit {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            color: #1B1E24;
            background: var(--color-accent);
            border-radius: var(--radius-button);
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .form-submit:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(232, 163, 61, 0.35);
        }

        .form-submit:focus-visible {
            outline: 3px solid var(--color-highlight);
            outline-offset: 2px;
        }

        .form-hint {
            font-size: 13px;
            color: var(--color-muted);
            margin-top: 8px;
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .site-footer .container {
            max-width: 1200px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .logo-icon-small {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #1B1E24;
            font-weight: 800;
            flex-shrink: 0;
        }

        .footer-about {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
            margin: 0;
            max-width: 280px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 12px;
        }

        .footer-col-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col-links a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: color 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .footer-col-links a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-member-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .benefit-grid {
                grid-template-columns: 1fr 1fr;
            }

            .benefit-card-large {
                grid-column: 1 / -1;
                min-height: 200px;
            }

            .scenario-grid {
                grid-template-columns: 1fr 1fr;
            }

            .scenario-card:first-child {
                grid-column: 1 / -1;
            }

            .steps-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .site-header .container {
                height: 60px;
            }

            .mobile-toggle {
                display: block;
            }

            .nav-links {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .hero-member {
                padding: 100px 0 48px;
            }

            .hero-member-title {
                font-size: 30px;
            }

            .section {
                padding: 56px 0;
            }

            .section-sm {
                padding: 40px 0;
            }

            .section-title {
                font-size: 23px;
            }

            .benefit-grid {
                grid-template-columns: 1fr;
            }

            .benefit-card-large {
                grid-column: auto;
            }

            .compare-item {
                grid-template-columns: 1fr;
                gap: 12px;
                padding: 16px;
            }

            .scenario-grid {
                grid-template-columns: 1fr;
            }

            .scenario-card:first-child {
                grid-column: auto;
            }

            .steps-row {
                grid-template-columns: 1fr;
            }

            .contact-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .footer-about {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .hero-member-title {
                font-size: 26px;
            }

            .hero-member-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-primary,
            .btn-secondary {
                justify-content: center;
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }