/* roulang page: index */
:root {
            --primary: #2F6BFF;
            --primary-dark: #1E4ED8;
            --primary-light: #EEF3FF;
            --secondary: #D4A22C;
            --secondary-light: #FDF8EC;
            --bg-white: #FFFFFF;
            --bg-light: #F7F8FA;
            --text-primary: #111827;
            --text-secondary: #4B5563;
            --text-muted: #9CA3AF;
            --border: #E5E7EB;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-full: 999px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.08);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.3s ease;
            --header-height: 68px;
            --nav-height: 48px;
            --container-max: 1200px;
            --section-space-lg: 96px;
            --section-space-md: 64px;
            --section-space-sm: 40px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-white);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary);
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }

        .header-row-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 16px;
        }

        @media (max-width: 768px) {
            .header-row-top {
                height: 56px;
                gap: 12px;
            }
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .brand-icon svg {
            width: 20px;
            height: 20px;
            stroke: #fff;
            stroke-width: 2;
            fill: none;
        }

        .brand-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .brand-text span {
            color: var(--primary);
        }

        @media (max-width: 480px) {
            .brand-text {
                font-size: 17px;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
            }
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: var(--radius-btn);
            height: 42px;
            padding: 0 14px;
            width: 220px;
            gap: 8px;
            border: 1px solid transparent;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            background: var(--bg-white);
        }

        .search-box input {
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-primary);
            width: 100%;
            outline: none;
        }

        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .search-box svg {
            width: 16px;
            height: 16px;
            stroke: var(--text-muted);
            flex-shrink: 0;
        }

        @media (max-width: 900px) {
            .search-box {
                display: none;
            }
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            height: 42px;
            padding: 0 20px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(47, 107, 255, 0.35);
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        .btn-outline:active {
            transform: translateY(1px);
        }

        .btn-lg {
            height: 50px;
            padding: 0 28px;
            font-size: 15px;
        }

        .btn-sm {
            height: 36px;
            padding: 0 16px;
            font-size: 13px;
        }

        @media (max-width: 480px) {
            .btn {
                height: 38px;
                padding: 0 16px;
                font-size: 13px;
            }
            .btn-lg {
                height: 46px;
                padding: 0 22px;
                font-size: 14px;
            }
        }

        /* Nav tabs */
        .header-nav {
            display: flex;
            align-items: center;
            height: var(--nav-height);
            gap: 8px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            position: relative;
        }

        .header-nav::-webkit-scrollbar {
            display: none;
        }

        .header-nav::before,
        .header-nav::after {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            width: 20px;
            pointer-events: none;
            z-index: 2;
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .header-nav::before {
            left: 0;
            background: linear-gradient(to right, #fff, transparent);
        }

        .header-nav::after {
            right: 0;
            background: linear-gradient(to left, #fff, transparent);
        }

        .header-nav.has-scroll-left::before {
            opacity: 1;
        }

        .header-nav.has-scroll-right::after {
            opacity: 1;
        }

        .nav-tab {
            display: inline-flex;
            align-items: center;
            height: 36px;
            padding: 0 14px;
            border-radius: var(--radius-full);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            flex-shrink: 0;
        }

        .nav-tab:hover {
            background: var(--bg-light);
            color: var(--text-primary);
        }

        .nav-tab.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            border-color: rgba(47, 107, 255, 0.2);
        }

        /* Hero */
        .hero {
            position: relative;
            background: var(--primary-light);
            overflow: hidden;
            padding: 72px 0 64px;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image:
                linear-gradient(rgba(47, 107, 255, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(47, 107, 255, 0.04) 1px, transparent 1px);
            background-size: 40px 40px;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(212, 162, 44, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 48px;
            align-items: center;
        }

        @media (max-width: 992px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 36px;
            }
        }

        .hero-content {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid rgba(47, 107, 255, 0.2);
            border-radius: var(--radius-full);
            padding: 6px 14px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            width: fit-content;
        }

        .hero-badge svg {
            width: 14px;
            height: 14px;
            stroke: var(--secondary);
            stroke-width: 2;
            fill: none;
        }

        .hero-title {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.5px;
            color: var(--text-primary);
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 28px;
            }
        }

        @media (max-width: 480px) {
            .hero-title {
                font-size: 24px;
            }
        }

        .hero-desc {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 520px;
        }

        .hero-cta-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 4px;
        }

        .hero-data-points {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            margin-top: 8px;
        }

        .hero-data-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-data-number {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

        .hero-data-label {
            font-size: 12px;
            color: var(--text-muted);
        }

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

        .hero-image-wrap {
            width: 100%;
            max-width: 440px;
            aspect-ratio: 4/3;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            border: 1px solid rgba(47, 107, 255, 0.15);
            position: relative;
        }

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

        .hero-image-wrap:hover img {
            transform: scale(1.03);
        }

        .countdown-ring {
            position: absolute;
            bottom: 16px;
            right: 16px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: var(--radius-card);
            padding: 12px 16px;
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            z-index: 2;
        }

        .countdown-ring svg {
            width: 44px;
            height: 44px;
            transform: rotate(-90deg);
        }

        .countdown-ring .ring-bg {
            fill: none;
            stroke: var(--border);
            stroke-width: 4;
        }

        .countdown-ring .ring-fg {
            fill: none;
            stroke: var(--primary);
            stroke-width: 4;
            stroke-linecap: round;
            stroke-dasharray: 283;
            stroke-dashoffset: 70;
            transition: stroke-dashoffset 1s ease;
        }

        .countdown-text {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .countdown-label {
            font-size: 11px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .countdown-value {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }

        .hero-carousel-dots {
            display: flex;
            gap: 6px;
            margin-top: 16px;
            justify-content: center;
        }

        .hero-carousel-dots .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--border);
            cursor: pointer;
            transition: all var(--transition-fast);
            border: none;
            padding: 0;
        }

        .hero-carousel-dots .dot.active {
            background: var(--primary);
            width: 24px;
            border-radius: 4px;
        }

        /* Section base */
        .section {
            padding: var(--section-space-lg) 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-space-sm) 0;
            }
        }

        .section-header {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: 32px;
        }

        .section-header-row {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.3px;
            color: var(--text-primary);
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 21px;
            }
        }

        .section-desc {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 600px;
        }

        .section-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .section-link:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        .section-link svg {
            width: 14px;
            height: 14px;
            stroke: currentColor;
            stroke-width: 2;
            fill: none;
            transition: transform var(--transition-fast);
        }

        /* Track / horizontal scroll */
        .track-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding-bottom: 8px;
        }

        .track-scroll::-webkit-scrollbar {
            display: none;
        }

        .track-card {
            flex-shrink: 0;
            width: 280px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .track-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(47, 107, 255, 0.2);
        }

        .track-card-img {
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-light);
        }

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

        .track-card:hover .track-card-img img {
            transform: scale(1.05);
        }

        .track-card-body {
            padding: 16px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .track-card-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .track-card-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .track-card-tag {
            display: inline-flex;
            align-items: center;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            width: fit-content;
        }

        /* Grid cards */
        .grid-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        @media (max-width: 992px) {
            .grid-cards {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 600px) {
            .grid-cards {
                grid-template-columns: 1fr;
            }
        }

        .card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            transition: all var(--transition-base);
            position: relative;
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(47, 107, 255, 0.2);
        }

        .card-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .card-icon svg {
            width: 22px;
            height: 22px;
            stroke: var(--primary);
            stroke-width: 2;
            fill: none;
        }

        .card-icon.amber {
            background: var(--secondary-light);
        }
        .card-icon.amber svg {
            stroke: var(--secondary);
        }

        .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            flex-grow: 1;
        }

        .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            margin-top: 4px;
        }

        .card-tag {
            display: inline-flex;
            align-items: center;
            background: var(--bg-light);
            color: var(--text-secondary);
            font-size: 11px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: var(--radius-full);
        }

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

        @media (max-width: 992px) {
            .six-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 600px) {
            .six-grid {
                grid-template-columns: 1fr;
            }
        }

        .six-grid-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            cursor: pointer;
            text-decoration: none;
            color: inherit;
        }

        .six-grid-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(47, 107, 255, 0.2);
            color: inherit;
        }

        .six-grid-number {
            font-size: 14px;
            font-weight: 700;
            color: var(--secondary);
            min-width: 28px;
            text-align: center;
            padding-top: 2px;
            flex-shrink: 0;
        }

        .six-grid-info {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex-grow: 1;
        }

        .six-grid-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .six-grid-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .six-grid-img {
            width: 48px;
            height: 48px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-light);
        }

        .six-grid-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* News list */
        .news-layout {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 32px;
        }

        @media (max-width: 992px) {
            .news-layout {
                grid-template-columns: 1fr;
            }
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 8px;
            border-bottom: 1px solid var(--border);
            transition: background var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            color: inherit;
        }

        .news-item:hover {
            background: var(--bg-light);
            color: inherit;
        }

        .news-item:first-child {
            border-top: 1px solid var(--border);
        }

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            white-space: nowrap;
            min-width: 72px;
            flex-shrink: 0;
        }

        .news-item-title {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-primary);
            line-height: 1.5;
            flex-grow: 1;
        }

        .news-item:hover .news-item-title {
            color: var(--primary);
        }

        .news-tag {
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            background: var(--primary-light);
            color: var(--primary);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-sidebar-card {
            background: var(--bg-light);
            border-radius: var(--radius-card);
            padding: 20px;
            border: 1px solid var(--border);
        }

        .news-sidebar-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .news-sidebar-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
            text-decoration: none;
            color: inherit;
        }

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

        .news-sidebar-item:hover {
            color: var(--primary);
        }

        .news-sidebar-index {
            font-size: 13px;
            font-weight: 700;
            color: var(--secondary);
            min-width: 24px;
            flex-shrink: 0;
        }

        .news-sidebar-text {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* Security */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        @media (max-width: 992px) {
            .security-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 600px) {
            .security-grid {
                grid-template-columns: 1fr;
            }
        }

        .security-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }

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

        .security-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .security-icon svg {
            width: 20px;
            height: 20px;
            stroke: var(--primary);
            stroke-width: 2;
            fill: none;
        }

        .security-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .security-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* KPI / latest dynamic */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        @media (max-width: 992px) {
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 600px) {
            .kpi-grid {
                grid-template-columns: 1fr;
            }
        }

        .kpi-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            box-shadow: var(--shadow-card);
        }

        .kpi-value {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

        .kpi-value.amber {
            color: var(--secondary);
        }

        .kpi-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .kpi-sub {
            font-size: 11px;
            color: var(--text-muted);
        }

        /* Form */
        .form-section-bg {
            background: var(--bg-light);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .form-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            padding: 32px;
            max-width: 640px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .form-card {
                padding: 20px;
            }
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin-bottom: 16px;
        }

        .form-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .form-input {
            height: 46px;
            padding: 0 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            font-size: 14px;
            color: var(--text-primary);
            background: #fff;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.1);
        }

        .form-textarea {
            min-height: 100px;
            padding: 12px 14px;
            resize: vertical;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            font-size: 14px;
            color: var(--text-primary);
            background: #fff;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.1);
        }

        .form-select {
            height: 46px;
            padding: 0 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            font-size: 14px;
            color: var(--text-primary);
            background: #fff;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%234B5563' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .form-select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.1);
        }

        .form-privacy {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Subscribe CTA */
        .subscribe-banner {
            background: var(--primary);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .subscribe-banner {
                flex-direction: column;
                text-align: center;
                padding: 24px 20px;
            }
        }

        .subscribe-banner-text {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .subscribe-banner-title {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
        }

        .subscribe-banner-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
        }

        .subscribe-banner .btn-white {
            background: #fff;
            color: var(--primary);
            font-weight: 600;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .subscribe-banner .btn-white:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-light);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 600px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-brand-logo {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-brand-logo .brand-icon {
            width: 30px;
            height: 30px;
            border-radius: 6px;
        }

        .footer-brand-logo .brand-icon svg {
            width: 16px;
            height: 16px;
        }

        .footer-brand-name {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
        }

        .footer-brand-name span {
            color: var(--primary);
        }

        .footer-brand-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col-title {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-link {
            font-size: 13px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }

        .footer-link:hover {
            color: var(--primary);
        }

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }

        .footer-contact-item svg {
            width: 14px;
            height: 14px;
            stroke: var(--text-muted);
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .footer-copyright {
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-beian {
            font-size: 12px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        @media (max-width: 600px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        /* Section bg variants */
        .section-bg-light {
            background: var(--bg-light);
        }

        .section-bg-blue-light {
            background: var(--primary-light);
        }

        /* Responsive adjustments */
        @media (max-width: 768px) {
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 21px;
            }
        }

        /* Utility */
        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .gap-2 {
            gap: 8px;
        }

/* roulang page: category1 */
:root {
            --primary: #2F6BFF;
            --primary-dark: #1E4ED8;
            --primary-light: #EEF3FF;
            --secondary: #D4A22C;
            --secondary-light: #FDF8EC;
            --bg-white: #FFFFFF;
            --bg-light: #F7F8FA;
            --text-primary: #111827;
            --text-secondary: #4B5563;
            --text-muted: #9CA3AF;
            --border: #E5E7EB;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-full: 999px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.08);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.3s ease;
            --header-height: 68px;
            --nav-height: 48px;
            --container-max: 1200px;
            --section-space-lg: 96px;
            --section-space-md: 64px;
            --section-space-sm: 40px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-white);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }
        .header-row-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 16px;
        }
        @media (max-width: 768px) {
            .header-row-top {
                height: 56px;
                gap: 12px;
            }
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .brand-icon svg {
            width: 20px;
            height: 20px;
            stroke: #fff;
            stroke-width: 2;
            fill: none;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--text-primary);
            white-space: nowrap;
        }
        .brand-text span {
            color: var(--primary);
        }
        @media (max-width: 768px) {
            .brand-text {
                font-size: 17px;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
            }
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: var(--radius-btn);
            height: 42px;
            padding: 0 14px;
            width: 220px;
            gap: 8px;
            border: 1px solid transparent;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: var(--bg-white);
        }
        .search-box input {
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-primary);
            width: 100%;
            outline: none;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box svg {
            width: 16px;
            height: 16px;
            stroke: var(--text-muted);
            flex-shrink: 0;
        }
        @media (max-width: 768px) {
            .search-box {
                display: none;
            }
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            height: 42px;
            padding: 0 20px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(47, 107, 255, 0.35);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-outline {
            background: var(--bg-white);
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            height: var(--nav-height);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
            position: relative;
        }
        .header-nav::-webkit-scrollbar {
            display: none;
        }
        .header-nav::after {
            content: '';
            position: absolute;
            right: 0;
            top: 0;
            bottom: 0;
            width: 24px;
            background: linear-gradient(to left, var(--bg-white), transparent);
            pointer-events: none;
        }
        .header-nav::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 24px;
            background: linear-gradient(to right, var(--bg-white), transparent);
            pointer-events: none;
        }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            height: 32px;
            padding: 0 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-full);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
            flex-shrink: 0;
        }
        .nav-tab:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-tab.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-tab.active::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* Page header area */
        .page-header {
            background: var(--bg-light);
            border-bottom: 1px solid var(--border);
            padding: 36px 0 32px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 14px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
            font-size: 11px;
        }
        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 500;
        }
        .page-header h1 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        @media (max-width: 768px) {
            .page-header h1 {
                font-size: 26px;
            }
            .page-header {
                padding: 24px 0 22px;
            }
        }
        .page-header .desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 680px;
        }

        /* Filter bar */
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            margin-bottom: 28px;
        }
        .filter-select {
            height: 42px;
            padding: 0 34px 0 14px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border);
            background: var(--bg-white);
            font-size: 14px;
            color: var(--text-primary);
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            background-size: 16px;
            cursor: pointer;
            min-width: 150px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .filter-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.1);
            outline: none;
        }
        .filter-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: var(--radius-btn);
            height: 42px;
            padding: 0 14px;
            gap: 8px;
            flex: 1;
            min-width: 200px;
            border: 1px solid transparent;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }
        .filter-search:focus-within {
            border-color: var(--primary);
            background: var(--bg-white);
        }
        .filter-search input {
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-primary);
            width: 100%;
            outline: none;
        }
        .filter-search svg {
            width: 16px;
            height: 16px;
            stroke: var(--text-muted);
            flex-shrink: 0;
        }
        .filter-btn {
            height: 42px;
            padding: 0 18px;
            border-radius: var(--radius-btn);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .filter-btn:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(47, 107, 255, 0.3);
        }

        /* Strategy list */
        .strategy-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .strategy-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 18px 16px;
            border-bottom: 1px solid var(--border);
            transition: background var(--transition-fast), box-shadow var(--transition-fast);
            border-radius: 0;
            position: relative;
        }
        .strategy-item:first-child {
            border-top: 1px solid var(--border);
        }
        .strategy-item:hover {
            background: var(--bg-light);
        }
        .strategy-item .thumb {
            width: 64px;
            height: 64px;
            border-radius: 8px;
            flex-shrink: 0;
            overflow: hidden;
            background: var(--bg-light);
        }
        .strategy-item .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .strategy-item .info {
            flex: 1;
            min-width: 0;
        }
        .strategy-item .info h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .strategy-item .info p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0;
        }
        .strategy-item .tags {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            margin-top: 6px;
        }
        .strategy-item .tag {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 500;
            white-space: nowrap;
        }
        .strategy-item .tag.hot {
            background: var(--secondary-light);
            color: var(--secondary);
        }
        .strategy-item .tag.new {
            background: #ECFDF5;
            color: #059669;
        }
        .strategy-item .action-btn {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 34px;
            padding: 0 16px;
            border-radius: var(--radius-btn);
            background: var(--bg-white);
            color: var(--primary);
            border: 1px solid var(--primary);
            font-size: 13px;
            font-weight: 600;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .strategy-item .action-btn:hover {
            background: var(--primary);
            color: #fff;
        }
        @media (max-width: 768px) {
            .strategy-item {
                padding: 14px 12px;
                gap: 12px;
                flex-wrap: wrap;
            }
            .strategy-item .thumb {
                width: 48px;
                height: 48px;
                border-radius: 6px;
            }
            .strategy-item .action-btn {
                height: 30px;
                padding: 0 12px;
                font-size: 12px;
            }
        }

        /* Pagination */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 32px 0 8px;
            flex-wrap: wrap;
        }
        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 10px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }
        .pagination a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .pagination .current {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .pagination .disabled {
            color: var(--text-muted);
            pointer-events: none;
            opacity: 0.5;
        }

        /* Data summary strip */
        .data-strip {
            margin: 56px 0;
            padding: 28px 32px;
            background: var(--bg-light);
            border-radius: var(--radius-card);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .data-strip .stat {
            text-align: left;
        }
        .data-strip .stat .num {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        .data-strip .stat .label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        .data-strip .stat.highlight .num {
            color: var(--secondary);
        }
        @media (max-width: 768px) {
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                padding: 20px;
                margin: 36px 0;
            }
            .data-strip .stat .num {
                font-size: 24px;
            }
        }

        /* CTA banner */
        .cta-banner {
            margin: 0 0 56px;
            padding: 48px 40px;
            background: var(--primary);
            border-radius: var(--radius-card);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-banner .cta-text {
            flex: 1;
            min-width: 260px;
        }
        .cta-banner .cta-text h2 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 6px;
        }
        .cta-banner .cta-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.6;
        }
        .cta-banner .btn-cta-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 46px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 15px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .cta-banner .btn-cta-white:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        .cta-banner .btn-cta-outline-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 46px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.6);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .cta-banner .btn-cta-outline-white:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
        }
        .cta-banner .cta-btns {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            flex-shrink: 0;
        }
        @media (max-width: 768px) {
            .cta-banner {
                padding: 28px 20px;
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-banner .cta-text h2 {
                font-size: 20px;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--bg-light);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-brand-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-brand-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }
        .footer-brand-name span {
            color: var(--primary);
        }
        .footer-brand-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-link {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-link:hover {
            color: var(--primary);
        }
        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .footer-contact-item svg {
            width: 16px;
            height: 16px;
            stroke: var(--text-muted);
            flex-shrink: 0;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                margin-bottom: 24px;
            }
            .site-footer {
                padding: 32px 0 20px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2F6BFF;
            --primary-dark: #1E4ED8;
            --primary-light: #EEF3FF;
            --secondary: #D4A22C;
            --secondary-light: #FDF8EC;
            --bg-white: #FFFFFF;
            --bg-light: #F7F8FA;
            --text-primary: #111827;
            --text-secondary: #4B5563;
            --text-muted: #9CA3AF;
            --border: #E5E7EB;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-full: 999px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.08);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.3s ease;
            --header-height: 68px;
            --nav-height: 48px;
            --container-max: 1200px;
            --section-space-lg: 96px;
            --section-space-md: 64px;
            --section-space-sm: 40px;
        }
        /* roulang page: brand-building */
        :root {
            --primary: #2F6BFF;
            --primary-dark: #1E4ED8;
            --primary-light: #EEF3FF;
            --secondary: #D4A22C;
            --secondary-light: #FDF8EC;
            --bg-white: #FFFFFF;
            --bg-light: #F7F8FA;
            --text-primary: #111827;
            --text-secondary: #4B5563;
            --text-muted: #9CA3AF;
            --border: #E5E7EB;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-full: 999px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.08);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.3s ease;
            --header-height: 68px;
            --nav-height: 48px;
            --container-max: 1200px;
            --section-space-lg: 96px;
            --section-space-md: 64px;
            --section-space-sm: 40px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-white);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }
        .header-row-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 16px;
        }
        @media (max-width: 640px) {
            .header-row-top {
                height: 56px;
                gap: 12px;
            }
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .brand-icon svg {
            width: 20px;
            height: 20px;
            stroke: #fff;
            stroke-width: 2;
            fill: none;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--text-primary);
            white-space: nowrap;
        }
        .brand-text span {
            color: var(--primary);
        }
        @media (max-width: 640px) {
            .brand-text {
                font-size: 17px;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
            }
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: var(--radius-btn);
            height: 42px;
            padding: 0 14px;
            width: 220px;
            gap: 8px;
            border: 1px solid transparent;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: var(--bg-white);
        }
        .search-box input {
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-primary);
            width: 100%;
            outline: none;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box svg {
            width: 16px;
            height: 16px;
            stroke: var(--text-muted);
            flex-shrink: 0;
        }
        @media (max-width: 768px) {
            .search-box {
                display: none;
            }
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            height: 42px;
            padding: 0 20px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(47, 107, 255, 0.35);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .btn-secondary {
            background: var(--secondary-light);
            color: #8a6a1f;
            border: 1px solid #e6d4a8;
        }
        .btn-secondary:hover {
            background: #f5e9cc;
            color: #7a5d15;
            box-shadow: 0 4px 12px rgba(212, 162, 44, 0.25);
        }
        @media (max-width: 640px) {
            .btn {
                height: 38px;
                padding: 0 16px;
                font-size: 13px;
            }
            .header-actions .btn-primary {
                padding: 0 14px;
            }
        }
        /* Nav Tabs */
        .header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            height: var(--nav-height);
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            position: relative;
        }
        .header-nav::-webkit-scrollbar {
            display: none;
        }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            height: 36px;
            padding: 0 16px;
            font-size: 14px;
            font-weight: 500;
            border-radius: var(--radius-full);
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
            flex-shrink: 0;
        }
        .nav-tab:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-tab.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-tab.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }
        @media (max-width: 768px) {
            .nav-tab {
                padding: 0 12px;
                font-size: 13px;
                height: 32px;
            }
            .nav-tab.active::after {
                bottom: -5px;
                width: 18px;
            }
        }
        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            padding: 20px 0 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: #d1d5db;
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--text-secondary);
            font-weight: 500;
        }
        /* Page Header */
        .page-header {
            padding: 28px 0 20px;
        }
        .page-header h1 {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .page-header .page-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 720px;
        }
        @media (max-width: 768px) {
            .page-header {
                padding: 20px 0 16px;
            }
            .page-header h1 {
                font-size: 26px;
                letter-spacing: -0.3px;
            }
            .page-header .page-desc {
                font-size: 14px;
            }
        }
        /* Content Grid: main + sidebar */
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
            padding: 24px 0 var(--section-space-md);
            align-items: start;
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }
        @media (max-width: 640px) {
            .content-grid {
                gap: 32px;
                padding: 16px 0 var(--section-space-sm);
            }
        }
        /* Main cards */
        .main-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        @media (max-width: 640px) {
            .main-cards {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }
        .brand-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .brand-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(47, 107, 255, 0.25);
        }
        .brand-card-img {
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-light);
            flex-shrink: 0;
        }
        .brand-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .brand-card:hover .brand-card-img img {
            transform: scale(1.04);
        }
        .brand-card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        @media (max-width: 640px) {
            .brand-card-body {
                padding: 16px 18px 20px;
            }
        }
        .brand-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .brand-card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .brand-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .tag-pill {
            display: inline-flex;
            align-items: center;
            height: 24px;
            padding: 0 10px;
            font-size: 12px;
            font-weight: 500;
            border-radius: var(--radius-full);
            background: var(--primary-light);
            color: var(--primary);
            white-space: nowrap;
        }
        .tag-pill.secondary-tag {
            background: var(--secondary-light);
            color: #8a6a1f;
        }
        /* Sidebar */
        .sidebar {
            position: sticky;
            top: calc(var(--header-height) + var(--nav-height) + 20px);
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 640px) {
            .sidebar {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }
        .sidebar-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
        }
        .sidebar-card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card-title::before {
            content: '';
            width: 4px;
            height: 18px;
            border-radius: 2px;
            background: var(--primary);
            flex-shrink: 0;
        }
        .recommend-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .recommend-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            transition: all var(--transition-fast);
        }
        .recommend-item:last-child {
            border-bottom: none;
        }
        .recommend-item:hover .recommend-text {
            color: var(--primary);
        }
        .recommend-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .recommend-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
            transition: color var(--transition-fast);
            font-weight: 500;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud .tag-pill {
            height: 28px;
            padding: 0 14px;
            font-size: 13px;
            cursor: pointer;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }
        .tag-cloud .tag-pill:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .tag-cloud .tag-pill.secondary-tag:hover {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }
        .sidebar-cta-card {
            background: linear-gradient(135deg, var(--primary-light) 0%, #f0f5ff 60%, var(--bg-white) 100%);
            border: 1px solid rgba(47, 107, 255, 0.2);
            border-radius: var(--radius-card);
            padding: 24px;
            text-align: center;
        }
        .sidebar-cta-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .sidebar-cta-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .sidebar-cta-card .btn {
            width: 100%;
        }
        /* CTA Section */
        .cta-section {
            background: var(--bg-light);
            border-radius: var(--radius-card);
            padding: 48px 32px;
            text-align: center;
            margin-bottom: var(--section-space-md);
            border: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: var(--primary-light);
            z-index: 0;
        }
        .cta-section>* {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .cta-section p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 32px 20px;
                margin-bottom: var(--section-space-sm);
            }
            .cta-section h2 {
                font-size: 22px;
            }
            .cta-section p {
                font-size: 14px;
            }
        }
        /* Footer */
        .site-footer {
            background: var(--bg-light);
            border-top: 1px solid var(--border);
            padding: 48px 0 32px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 32px 0 24px;
            }
        }
        .footer-brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-brand-logo .brand-icon {
            width: 32px;
            height: 32px;
        }
        .footer-brand-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
        }
        .footer-brand-name span {
            color: var(--primary);
        }
        .footer-brand-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            max-width: 300px;
        }
        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-link {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-link:hover {
            color: var(--primary);
        }
        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .footer-contact-item svg {
            width: 16px;
            height: 16px;
            stroke: var(--text-muted);
            flex-shrink: 0;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            margin-top: 32px;
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        /* Responsive adjustments for content grid */
        @media (max-width: 640px) {
            .content-grid {
                gap: 28px;
            }
            .main-cards {
                gap: 14px;
            }
            .brand-card-body {
                padding: 14px 16px 16px;
            }
            .brand-card-title {
                font-size: 15px;
            }
            .brand-card-summary {
                font-size: 13px;
                -webkit-line-clamp: 2;
            }
            .sidebar-card {
                padding: 18px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2F6BFF;
            --primary-dark: #1E4ED8;
            --primary-light: #EEF3FF;
            --secondary: #D4A22C;
            --secondary-light: #FDF8EC;
            --bg-white: #FFFFFF;
            --bg-light: #F7F8FA;
            --text-primary: #111827;
            --text-secondary: #4B5563;
            --text-muted: #9CA3AF;
            --border: #E5E7EB;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-full: 999px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.08);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.3s ease;
            --header-height: 68px;
            --nav-height: 48px;
            --container-max: 1200px;
            --section-space-lg: 96px;
            --section-space-md: 64px;
            --section-space-sm: 40px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-white);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary);
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }

        .header-row-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 16px;
        }

        @media (max-width: 640px) {
            .header-row-top {
                height: 56px;
                gap: 12px;
            }
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .brand-icon svg {
            width: 20px;
            height: 20px;
            stroke: #fff;
            stroke-width: 2;
            fill: none;
        }

        .brand-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .brand-text span {
            color: var(--primary);
        }

        @media (max-width: 640px) {
            .brand-text {
                font-size: 17px;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
            }
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: var(--radius-btn);
            height: 42px;
            padding: 0 14px;
            width: 220px;
            gap: 8px;
            border: 1px solid transparent;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            background: var(--bg-white);
        }

        .search-box input {
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-primary);
            width: 100%;
            outline: none;
        }

        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .search-box svg {
            width: 16px;
            height: 16px;
            stroke: var(--text-muted);
            flex-shrink: 0;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            height: 42px;
            padding: 0 20px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(47, 107, 255, 0.35);
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

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

        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        .btn-outline:active {
            transform: translateY(1px);
        }

        /* Nav Tabs */
        .header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            height: var(--nav-height);
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            position: relative;
        }

        .header-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-tab {
            display: inline-flex;
            align-items: center;
            height: 36px;
            padding: 0 16px;
            border-radius: var(--radius-full);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
        }

        .nav-tab:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-tab.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }

        .nav-tab.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* Page Header */
        .page-header {
            background: var(--bg-light);
            border-bottom: 1px solid var(--border);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }

        .page-header::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 300px;
            height: 100%;
            background: url('/assets/images/backpic/back-1.webp') no-repeat right center;
            background-size: cover;
            opacity: 0.08;
            pointer-events: none;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .sep {
            color: var(--text-muted);
        }

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

        .page-header h1 {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .page-header .header-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 720px;
            position: relative;
            z-index: 1;
        }

        @media (max-width: 768px) {
            .page-header {
                padding: 32px 0 28px;
            }
            .page-header h1 {
                font-size: 26px;
            }
            .page-header .header-desc {
                font-size: 14px;
            }
        }

        /* Alternating Sections */
        .alternate-section {
            padding: var(--section-space-md) 0;
        }

        .alternate-section.alt-bg {
            background: var(--bg-light);
        }

        .alt-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .alt-grid.reverse {
            direction: rtl;
        }

        .alt-grid.reverse>* {
            direction: ltr;
        }

        .alt-text .section-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: var(--radius-full);
            background: var(--secondary-light);
            color: var(--secondary);
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 16px;
        }

        .alt-text h2 {
            font-size: 24px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .alt-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .alt-text .key-points {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .alt-text .key-points li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .alt-text .key-points li::before {
            content: '';
            flex-shrink: 0;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            margin-top: 8px;
        }

        .alt-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .alt-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            transition: transform var(--transition-base);
        }

        .alt-image:hover img {
            transform: scale(1.02);
        }

        @media (max-width: 768px) {
            .alt-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .alt-grid.reverse {
                direction: ltr;
            }
            .alt-image img {
                height: 200px;
            }
            .alternate-section {
                padding: 40px 0;
            }
            .alt-text h2 {
                font-size: 20px;
            }
            .alt-text p {
                font-size: 14px;
            }
        }

        /* Stats Strip */
        .stats-strip {
            background: var(--primary-light);
            border-top: 1px solid rgba(47, 107, 255, 0.1);
            border-bottom: 1px solid rgba(47, 107, 255, 0.1);
            padding: 48px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stat-item .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-item .stat-number .stat-suffix {
            font-size: 20px;
            color: var(--secondary);
            font-weight: 600;
        }

        .stat-item .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stat-item .stat-number {
                font-size: 28px;
            }
            .stats-strip {
                padding: 32px 0;
            }
        }

        /* CTA Section */
        .cta-section {
            padding: var(--section-space-md) 0;
            background: var(--bg-white);
        }

        .cta-card {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
        }

        .cta-card h2 {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .cta-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 560px;
            margin: 0 auto 24px;
        }

        .cta-card .btn-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .cta-card {
                padding: 32px 24px;
            }
            .cta-card h2 {
                font-size: 22px;
            }
            .cta-card p {
                font-size: 14px;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--bg-light);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: var(--section-space-md);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .footer-brand-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }

        .footer-brand-name span {
            color: var(--primary);
        }

        .footer-brand-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-link {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .footer-link:hover {
            color: var(--primary);
        }

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }

        .footer-contact-item svg {
            width: 16px;
            height: 16px;
            stroke: var(--text-muted);
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 16px;
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .site-footer {
                padding: 32px 0 20px;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-brand {
                grid-column: auto;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #2F6BFF;
            --primary-dark: #1E4ED8;
            --primary-light: #EEF3FF;
            --secondary: #D4A22C;
            --secondary-light: #FDF8EC;
            --bg-white: #FFFFFF;
            --bg-light: #F7F8FA;
            --text-primary: #111827;
            --text-secondary: #4B5563;
            --text-muted: #9CA3AF;
            --border: #E5E7EB;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-full: 999px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.08);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.3s ease;
            --header-height: 68px;
            --nav-height: 48px;
            --container-max: 1200px;
            --section-space-lg: 96px;
            --section-space-md: 64px;
            --section-space-sm: 40px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-white);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }
        .header-row-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 16px;
        }
        @media (max-width: 640px) {
            .header-row-top {
                height: 56px;
                gap: 12px;
            }
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .brand-icon svg {
            width: 20px;
            height: 20px;
            stroke: #fff;
            stroke-width: 2;
            fill: none;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--text-primary);
            white-space: nowrap;
        }
        .brand-text span {
            color: var(--primary);
        }
        @media (max-width: 640px) {
            .brand-text {
                font-size: 17px;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
            }
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: var(--radius-btn);
            height: 42px;
            padding: 0 14px;
            width: 220px;
            gap: 8px;
            border: 1px solid transparent;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: var(--bg-white);
        }
        .search-box input {
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-primary);
            width: 100%;
            outline: none;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box svg {
            width: 16px;
            height: 16px;
            stroke: var(--text-muted);
            flex-shrink: 0;
        }
        @media (max-width: 768px) {
            .search-box {
                display: none;
            }
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            height: 42px;
            padding: 0 20px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
            border: 1px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(47, 107, 255, 0.35);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-outline {
            background: #fff;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        /* Nav Tabs */
        .header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            height: var(--nav-height);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            position: relative;
            mask-image: linear-gradient(to right, transparent 0, #000 12px, #000 calc(100% - 12px), transparent 100%);
            -webkit-mask-image: linear-gradient(to right, transparent 0, #000 12px, #000 calc(100% - 12px), transparent 100%);
        }
        .header-nav::-webkit-scrollbar {
            display: none;
        }
        .nav-tab {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: var(--radius-full);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.2px;
        }
        .nav-tab:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-tab.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }
        .nav-tab.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* Page Hero / Header */
        .page-header {
            padding: 56px 0 40px;
            background: var(--bg-white);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
            font-size: 12px;
        }
        .page-header h1 {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .page-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
        }

        /* Compare Table Section */
        .compare-section {
            padding: 8px 0 56px;
            background: var(--bg-white);
        }
        .compare-table-wrapper {
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }
        .compare-grid {
            display: grid;
            grid-template-columns: 160px 1fr 1.3fr;
            min-width: 720px;
        }
        .compare-row {
            display: contents;
        }
        .compare-cell {
            padding: 18px 20px;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            line-height: 1.6;
            display: flex;
            align-items: center;
            color: var(--text-secondary);
            background: #fff;
        }
        .compare-row:last-child .compare-cell {
            border-bottom: none;
        }
        .compare-cell.dimension {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 14px;
            background: var(--bg-light);
            justify-content: flex-start;
            letter-spacing: 0.2px;
        }
        .compare-cell.plan-a {
            background: #fff;
        }
        .compare-cell.plan-b {
            background: var(--primary-light);
            border-left: 3px solid var(--primary);
            color: var(--text-primary);
            font-weight: 500;
        }
        .compare-head .compare-cell {
            font-weight: 700;
            font-size: 15px;
            color: var(--text-primary);
            padding-top: 16px;
            padding-bottom: 16px;
            background: var(--bg-light);
            letter-spacing: 0.3px;
        }
        .compare-head .compare-cell.plan-b {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-left: 3px solid var(--primary);
        }
        .compare-badge {
            display: inline-block;
            font-size: 11px;
            padding: 2px 10px;
            border-radius: var(--radius-full);
            background: var(--secondary-light);
            color: var(--secondary);
            font-weight: 600;
            margin-left: 8px;
            letter-spacing: 0.3px;
        }
        .compare-highlight-icon {
            display: inline-flex;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            margin-right: 8px;
            flex-shrink: 0;
        }
        .compare-muted-icon {
            display: inline-flex;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--bg-light);
            color: var(--text-muted);
            align-items: center;
            justify-content: center;
            font-size: 11px;
            margin-right: 8px;
            flex-shrink: 0;
            border: 1px solid var(--border);
        }
        .compare-table-note {
            margin-top: 16px;
            font-size: 13px;
            color: var(--text-muted);
            text-align: right;
            letter-spacing: 0.2px;
        }

        @media (max-width: 768px) {
            .compare-table-wrapper {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
            .compare-grid {
                min-width: 720px;
            }
            .compare-table-note {
                text-align: left;
                padding-left: 4px;
            }
        }

        /* Stats Row */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            padding: 48px 0;
            background: var(--bg-white);
        }
        .stat-card {
            background: var(--bg-light);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        .stat-number .stat-unit {
            font-size: 18px;
            font-weight: 600;
            color: var(--secondary);
            margin-left: 2px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 8px;
            letter-spacing: 0.3px;
        }

        /* Scenario Section */
        .scenario-section {
            padding: 56px 0;
            background: var(--bg-light);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .scenario-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .scenario-image img {
            width: 100%;
            height: 300px;
            object-fit: cover;
        }
        .scenario-content h2 {
            font-size: 24px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .scenario-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .scenario-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .scenario-tag {
            font-size: 13px;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }
        .scenario-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        /* CTA Section */
        .cta-section {
            padding: 64px 0;
            background: var(--bg-white);
        }
        .cta-card {
            background: var(--primary-light);
            border-radius: 16px;
            padding: 48px 40px;
            text-align: center;
            border: 1px solid rgba(47, 107, 255, 0.15);
            position: relative;
            overflow: hidden;
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(47, 107, 255, 0.05);
            pointer-events: none;
        }
        .cta-card h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .cta-card p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-buttons {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-light);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-brand-logo .brand-icon {
            width: 30px;
            height: 30px;
            border-radius: 6px;
        }
        .footer-brand-logo .brand-icon svg {
            width: 16px;
            height: 16px;
        }
        .footer-brand-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }
        .footer-brand-name span {
            color: var(--primary);
        }
        .footer-brand-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-link {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-link:hover {
            color: var(--primary);
        }
        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 10px;
        }
        .footer-contact-item svg {
            width: 15px;
            height: 15px;
            stroke: var(--text-muted);
            flex-shrink: 0;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-copy {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-beian {
            font-size: 13px;
            color: var(--text-muted);
            letter-spacing: 0.3px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 640px) {
            .page-header {
                padding: 32px 0 28px;
            }
            .page-header h1 {
                font-size: 26px;
            }
            .stats-row {
                grid-template-columns: 1fr;
            }
            .cta-card {
                padding: 32px 20px;
            }
            .cta-card h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .compare-section {
                padding: 4px 0 32px;
            }
            .scenario-section {
                padding: 32px 0;
            }
            .cta-section {
                padding: 40px 0;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #2F6BFF;
            --primary-dark: #1E4ED8;
            --primary-light: #EEF3FF;
            --secondary: #D4A22C;
            --secondary-light: #FDF8EC;
            --bg-white: #FFFFFF;
            --bg-light: #F7F8FA;
            --text-primary: #111827;
            --text-secondary: #4B5563;
            --text-muted: #9CA3AF;
            --border: #E5E7EB;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-full: 999px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.08);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.3s ease;
            --header-height: 68px;
            --nav-height: 48px;
            --container-max: 1200px;
            --section-space-lg: 96px;
            --section-space-md: 64px;
            --section-space-sm: 40px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-white);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover { color: var(--primary); }

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

        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button { cursor: pointer; border: none; background: none; }
        button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled { box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06); }
        .header-row-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 16px;
        }
        .brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .brand-icon svg { width: 20px; height: 20px; stroke: #fff; stroke-width: 2; fill: none; }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--text-primary);
            white-space: nowrap;
        }
        .brand-text span { color: var(--primary); }
        .header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: var(--radius-btn);
            height: 42px;
            padding: 0 14px;
            width: 220px;
            gap: 8px;
            border: 1px solid transparent;
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }
        .search-box:focus-within { border-color: var(--primary); background: var(--bg-white); }
        .search-box input {
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-primary);
            width: 100%;
            outline: none;
        }
        .search-box input::placeholder { color: var(--text-muted); }
        .search-box svg { width: 16px; height: 16px; stroke: var(--text-muted); flex-shrink: 0; }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            height: 42px;
            padding: 0 20px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
            gap: 6px;
        }
        .btn-primary { background: var(--primary); color: #fff; }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(47, 107, 255, 0.35);
        }
        .btn-primary:active { transform: translateY(1px); }
        .btn-outline {
            background: var(--bg-white);
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .btn-sm { height: 36px; padding: 0 14px; font-size: 13px; }

        /* Nav Tabs */
        .header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            height: var(--nav-height);
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            position: relative;
        }
        .header-nav::-webkit-scrollbar { display: none; }
        .nav-tab {
            flex-shrink: 0;
            padding: 6px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-full);
            transition: all var(--transition-fast);
            white-space: nowrap;
            background: transparent;
            position: relative;
        }
        .nav-tab:hover { background: var(--bg-light); color: var(--text-primary); }
        .nav-tab.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }
        .nav-tab.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        /* Page Hero */
        .page-hero {
            position: relative;
            background: linear-gradient(120deg, #F7F8FA 0%, #EEF3FF 58%, #FDF8EC 100%);
            padding: 56px 0 48px;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 420px;
            height: 100%;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
            mask-image: linear-gradient(to left, rgba(0,0,0,0.8), transparent);
            -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,0.8), transparent);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .breadcrumb a { color: var(--text-secondary); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb span { color: var(--text-muted); }
        .page-hero-content { position: relative; z-index: 1; }
        .page-hero h1 {
            font-size: 34px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .page-hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
        }

        /* Section */
        .section { padding: var(--section-space-md) 0; }
        .section-light { background: var(--bg-light); }
        .section-title {
            font-size: 26px;
            font-weight: 600;
            letter-spacing: -0.3px;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        /* Resource Cards */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .resource-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .resource-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(47, 107, 255, 0.25);
        }
        .resource-card-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            flex-shrink: 0;
            border: 1px solid var(--border);
        }
        .resource-card-icon svg {
            width: 24px;
            height: 24px;
            stroke: var(--primary);
            stroke-width: 1.8;
            fill: none;
        }
        .resource-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .resource-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex-grow: 1;
            margin-bottom: 16px;
        }
        .resource-card .btn {
            align-self: flex-start;
        }

        /* Featured Resources */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .featured-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .featured-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
        .featured-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
        }
        .featured-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }
        .featured-card:hover .featured-card-img img { transform: scale(1.05); }
        .featured-card-body { padding: 20px 24px; flex-grow: 1; display: flex; flex-direction: column; }
        .featured-card-tag {
            display: inline-flex;
            align-items: center;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .featured-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .featured-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex-grow: 1;
            margin-bottom: 14px;
        }

        /* Stats */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--secondary);
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* Subscribe Bar */
        .subscribe-wrap {
            background: var(--primary-light);
            border: 1px solid rgba(47, 107, 255, 0.15);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .subscribe-info { flex: 1; min-width: 260px; }
        .subscribe-info h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .subscribe-info p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }
        .subscribe-form input {
            height: 46px;
            padding: 0 16px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border);
            background: var(--bg-white);
            font-size: 14px;
            color: var(--text-primary);
            width: 280px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            outline: none;
        }
        .subscribe-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.1);
        }
        .subscribe-form input::placeholder { color: var(--text-muted); }

        /* Footer */
        .site-footer {
            background: var(--bg-light);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: var(--section-space-md);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
        .footer-brand-name { font-size: 18px; font-weight: 700; color: var(--text-primary); }
        .footer-brand-name span { color: var(--primary); }
        .footer-brand-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .footer-links { display: flex; flex-direction: column; gap: 8px; }
        .footer-link {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-link:hover { color: var(--primary); }
        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .footer-contact-item svg { width: 16px; height: 16px; stroke: var(--text-muted); flex-shrink: 0; }
        .footer-bottom {
            padding-top: 20px;
            border-top: 1px solid var(--border);
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .resource-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-row { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .header-row-top { height: 56px; gap: 10px; }
            .brand-text { font-size: 17px; }
            .brand-icon { width: 30px; height: 30px; }
            .search-box { display: none; }
            .page-hero { padding: 36px 0 32px; }
            .page-hero h1 { font-size: 26px; }
            .section { padding: 40px 0; }
            .section-title { font-size: 22px; }
            .resource-grid { grid-template-columns: 1fr; }
            .featured-grid { grid-template-columns: 1fr; }
            .stats-row { grid-template-columns: 1fr 1fr; gap: 14px; }
            .stat-item { padding: 20px 14px; }
            .stat-number { font-size: 28px; }
            .subscribe-wrap { padding: 24px 20px; flex-direction: column; align-items: stretch; }
            .subscribe-form input { width: 100%; }
            .subscribe-form { flex-direction: column; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .container { padding: 0 16px; }
        }
        @media (max-width: 520px) {
            .page-hero h1 { font-size: 22px; }
            .page-hero-desc { font-size: 14px; }
            .section-title { font-size: 19px; }
            .stats-row { grid-template-columns: 1fr; gap: 10px; }
            .btn { height: 38px; padding: 0 14px; font-size: 13px; }
            .header-nav { gap: 4px; }
            .nav-tab { padding: 5px 10px; font-size: 13px; }
        }

/* roulang page: category6 */
:root {
      --primary: #2F6BFF;
      --primary-dark: #1E4ED8;
      --primary-light: #EEF3FF;
      --secondary: #D4A22C;
      --secondary-light: #FDF8EC;
      --bg-white: #FFFFFF;
      --bg-light: #F7F8FA;
      --text-primary: #111827;
      --text-secondary: #4B5563;
      --text-muted: #9CA3AF;
      --border: #E5E7EB;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-full: 999px;
      --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.05);
      --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.08);
      --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
      --transition-fast: 0.18s ease;
      --transition-base: 0.3s ease;
      --header-height: 68px;
      --nav-height: 48px;
      --container-max: 1200px;
      --section-space-lg: 96px;
      --section-space-md: 64px;
      --section-space-sm: 40px;
    }

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

    html {
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    body {
      font-family: var(--font-stack);
      font-size: 16px;
      line-height: 1.7;
      color: var(--text-primary);
      background-color: var(--bg-white);
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--transition-fast);
    }

    a:hover {
      color: var(--primary);
    }

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

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

    button {
      cursor: pointer;
      border: none;
      background: none;
    }

    button:focus-visible,
    a:focus-visible,
    input:focus-visible,
    textarea:focus-visible,
    select:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
      border-radius: 4px;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* ========== Header ========== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: var(--bg-white);
      border-bottom: 1px solid var(--border);
      transition: box-shadow var(--transition-base);
    }

    .site-header.scrolled {
      box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
    }

    .header-row-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: var(--header-height);
      gap: 16px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .brand-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .brand-icon svg {
      width: 20px;
      height: 20px;
      stroke: #fff;
      stroke-width: 2;
      fill: none;
    }

    .brand-text {
      font-size: 20px;
      font-weight: 700;
      letter-spacing: 0.5px;
      color: var(--text-primary);
      white-space: nowrap;
    }

    .brand-text span {
      color: var(--primary);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .search-box {
      display: flex;
      align-items: center;
      background: var(--bg-light);
      border-radius: var(--radius-btn);
      height: 42px;
      padding: 0 14px;
      width: 220px;
      gap: 8px;
      border: 1px solid transparent;
      transition: border-color var(--transition-fast), background var(--transition-fast);
    }

    .search-box:focus-within {
      border-color: var(--primary);
      background: var(--bg-white);
    }

    .search-box input {
      border: none;
      background: transparent;
      font-size: 14px;
      color: var(--text-primary);
      width: 100%;
      outline: none;
    }

    .search-box input::placeholder {
      color: var(--text-muted);
    }

    .search-box svg {
      width: 16px;
      height: 16px;
      stroke: var(--text-muted);
      flex-shrink: 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 14px;
      height: 42px;
      padding: 0 20px;
      transition: all var(--transition-fast);
      white-space: nowrap;
      letter-spacing: 0.3px;
    }

    .btn-primary {
      background: var(--primary);
      color: #fff;
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      color: #fff;
      box-shadow: 0 4px 16px rgba(47, 107, 255, 0.35);
    }

    .btn-primary:active {
      transform: translateY(1px);
    }

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

    .btn-outline:hover {
      background: var(--primary-light);
      color: var(--primary-dark);
      border-color: var(--primary-dark);
    }

    .btn-lg {
      height: 48px;
      padding: 0 28px;
      font-size: 15px;
    }

    .btn-sm {
      height: 36px;
      padding: 0 16px;
      font-size: 13px;
    }

    .header-nav {
      display: flex;
      align-items: center;
      gap: 8px;
      height: var(--nav-height);
      overflow-x: auto;
      scrollbar-width: none;
      -ms-overflow-style: none;
      position: relative;
    }

    .header-nav::-webkit-scrollbar {
      display: none;
    }

    .nav-tab {
      display: inline-flex;
      align-items: center;
      height: 36px;
      padding: 0 16px;
      border-radius: var(--radius-full);
      font-size: 14px;
      font-weight: 500;
      color: var(--text-secondary);
      white-space: nowrap;
      transition: all var(--transition-fast);
      position: relative;
      flex-shrink: 0;
    }

    .nav-tab:hover {
      background: var(--bg-light);
      color: var(--text-primary);
    }

    .nav-tab.active {
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 600;
    }

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

    /* ========== Page Header ========== */
    .page-header {
      background: linear-gradient(180deg, var(--primary-light) 0%, var(--bg-white) 100%);
      padding: 56px 0 40px;
      position: relative;
      overflow: hidden;
    }

    .page-header::before {
      content: '';
      position: absolute;
      top: 0;
      right: 0;
      width: 300px;
      height: 100%;
      background-image:
        linear-gradient(var(--primary-light) 1px, transparent 1px),
        linear-gradient(90deg, var(--primary-light) 1px, transparent 1px);
      background-size: 24px 24px;
      opacity: 0.6;
      pointer-events: none;
    }

    .page-header::after {
      content: '';
      position: absolute;
      top: 24px;
      right: 40px;
      width: 80px;
      height: 4px;
      background: var(--secondary);
      border-radius: 2px;
      opacity: 0.7;
    }

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

    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 16px;
      flex-wrap: wrap;
    }

    .breadcrumb a {
      color: var(--text-secondary);
      transition: color var(--transition-fast);
    }

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

    .breadcrumb .separator {
      color: var(--text-muted);
      font-size: 12px;
    }

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

    .page-header h1 {
      font-size: 36px;
      font-weight: 700;
      line-height: 1.25;
      letter-spacing: -0.5px;
      color: var(--text-primary);
      margin-bottom: 12px;
      max-width: 720px;
    }

    .page-header .page-desc {
      font-size: 16px;
      line-height: 1.7;
      color: var(--text-secondary);
      max-width: 640px;
    }

    /* ========== Sections ========== */
    .section {
      padding: var(--section-space-md) 0;
    }

    .section-sm {
      padding: var(--section-space-sm) 0;
    }

    .section-lg {
      padding: var(--section-space-lg) 0;
    }

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

    .section-subtitle {
      font-size: 15px;
      line-height: 1.7;
      color: var(--text-secondary);
      max-width: 560px;
    }

    .section-header {
      margin-bottom: 32px;
    }

    .section-header.center {
      text-align: center;
    }

    .section-header.center .section-subtitle {
      margin: 0 auto;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 12px;
      border-radius: var(--radius-full);
      font-size: 12px;
      font-weight: 500;
      line-height: 1.5;
      white-space: nowrap;
    }

    .badge-primary {
      background: var(--primary-light);
      color: var(--primary);
    }

    .badge-secondary {
      background: var(--secondary-light);
      color: var(--secondary);
    }

    .badge-success {
      background: #ECFDF5;
      color: #059669;
    }

    .badge-warning {
      background: #FFFBEB;
      color: #D97706;
    }

    /* ========== FAQ ========== */
    .faq-wrapper {
      max-width: 800px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      margin-bottom: 12px;
      overflow: hidden;
      transition: all var(--transition-base);
    }

    .faq-item:hover {
      box-shadow: var(--shadow-card);
    }

    .faq-item.open {
      border-color: var(--primary);
      box-shadow: var(--shadow-card);
    }

    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 20px 24px;
      cursor: pointer;
      width: 100%;
      text-align: left;
      transition: background var(--transition-fast);
      user-select: none;
    }

    .faq-question:hover {
      background: var(--bg-light);
    }

    .faq-question .q-text {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-primary);
      line-height: 1.5;
    }

    .faq-question .q-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 28px;
      height: 28px;
      border-radius: 6px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 13px;
      font-weight: 700;
      flex-shrink: 0;
    }

    .faq-question .q-icon {
      width: 22px;
      height: 22px;
      flex-shrink: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: var(--bg-light);
      transition: all var(--transition-fast);
      color: var(--text-secondary);
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.3s ease;
      padding: 0 24px;
    }

    .faq-item.open .faq-answer {
      max-height: 400px;
      padding: 0 24px 20px;
    }

    .faq-answer-inner {
      padding-top: 4px;
      border-top: 1px solid var(--border);
      padding-top: 16px;
      font-size: 14px;
      line-height: 1.8;
      color: var(--text-secondary);
    }

    /* ========== Form ========== */
    .form-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: 16px;
      box-shadow: var(--shadow-card);
      padding: 32px;
      max-width: 640px;
      margin: 0 auto;
    }

    .form-group {
      margin-bottom: 20px;
    }

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

    .form-group label .required {
      color: #DC2626;
      font-weight: 700;
    }

    .form-control {
      width: 100%;
      height: 46px;
      padding: 0 14px;
      border: 1px solid var(--border);
      border-radius: var(--radius-btn);
      font-size: 14px;
      color: var(--text-primary);
      background: var(--bg-white);
      transition: all var(--transition-fast);
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.1);
    }

    .form-control::placeholder {
      color: var(--text-muted);
    }

    textarea.form-control {
      height: auto;
      min-height: 120px;
      padding: 12px 14px;
      resize: vertical;
      line-height: 1.6;
    }

    select.form-control {
      appearance: none;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239CA3AF' stroke-width='2' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 14px center;
      padding-right: 40px;
    }

    .form-actions {
      margin-top: 24px;
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
    }

    .form-note {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* ========== CTA ========== */
    .cta-section {
      background: var(--bg-light);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      padding: 64px 0;
    }

    .cta-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: 16px;
      box-shadow: var(--shadow-card);
      padding: 40px 32px;
      text-align: center;
      max-width: 720px;
      margin: 0 auto;
    }

    .cta-card h2 {
      font-size: 26px;
      font-weight: 700;
      line-height: 1.3;
      color: var(--text-primary);
      margin-bottom: 12px;
    }

    .cta-card p {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 24px;
      max-width: 520px;
      margin-left: auto;
      margin-right: auto;
    }

    .cta-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
      flex-wrap: wrap;
    }

    /* ========== Info Strip ========== */
    .info-strip {
      background: var(--primary-light);
      border-radius: var(--radius-card);
      padding: 24px 28px;
      display: flex;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 32px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .info-strip .info-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .info-strip .info-icon svg {
      width: 18px;
      height: 18px;
      stroke: #fff;
      stroke-width: 2;
      fill: none;
    }

    .info-strip .info-text {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    .info-strip .info-text strong {
      color: var(--text-primary);
    }

    /* ========== Footer ========== */
    .site-footer {
      background: var(--bg-light);
      border-top: 1px solid var(--border);
      padding: 48px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 32px;
      margin-bottom: 32px;
    }

    .footer-brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
    }

    .footer-brand-name {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-primary);
      letter-spacing: 0.3px;
    }

    .footer-brand-name span {
      color: var(--primary);
    }

    .footer-brand-desc {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      max-width: 280px;
    }

    .footer-col-title {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 12px;
      letter-spacing: 0.3px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-link {
      font-size: 14px;
      color: var(--text-secondary);
      transition: color var(--transition-fast);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .footer-link:hover {
      color: var(--primary);
    }

    .footer-contact-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-secondary);
      margin-bottom: 8px;
    }

    .footer-contact-item svg {
      width: 14px;
      height: 14px;
      stroke: var(--text-muted);
      flex-shrink: 0;
    }

    .footer-bottom {
      border-top: 1px solid var(--border);
      padding-top: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      font-size: 13px;
      color: var(--text-muted);
    }

    /* ========== Responsive ========== */
    @media (max-width: 1024px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
      }
    }

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

      .header-row-top {
        height: 56px;
      }

      .brand-text {
        font-size: 17px;
      }

      .brand-icon {
        width: 30px;
        height: 30px;
      }

      .header-nav {
        gap: 4px;
      }

      .nav-tab {
        padding: 0 12px;
        height: 32px;
        font-size: 13px;
      }

      .page-header {
        padding: 40px 0 28px;
      }

      .page-header h1 {
        font-size: 26px;
      }

      .section {
        padding: 40px 0;
      }

      .section-lg {
        padding: 48px 0;
      }

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

      .faq-question {
        padding: 16px 18px;
      }

      .faq-question .q-text {
        font-size: 15px;
        gap: 8px;
      }

      .faq-answer {
        padding: 0 18px;
      }

      .faq-item.open .faq-answer {
        padding: 0 18px 16px;
      }

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

      .cta-card {
        padding: 28px 20px;
      }

      .cta-card h2 {
        font-size: 22px;
      }

      .info-strip {
        padding: 16px 18px;
        flex-direction: column;
        gap: 10px;
      }

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

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
      }
    }

    @media (max-width: 480px) {
      .container {
        padding: 0 14px;
      }

      .header-actions .btn {
        padding: 0 12px;
        font-size: 13px;
        height: 36px;
      }

      .header-actions .btn .btn-text-short {
        display: inline;
      }

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

      .faq-question .q-number {
        width: 24px;
        height: 24px;
        font-size: 11px;
      }

      .form-actions {
        flex-direction: column;
        align-items: flex-start;
      }

      .form-actions .btn {
        width: 100%;
      }
    }