/* roulang page: index */
:root {
            --primary: #0B3C5D;
            --primary-dark: #082B42;
            --primary-light: #0E4A72;
            --accent: #C9A961;
            --accent-light: rgba(201, 169, 97, 0.12);
            --accent-dark: #B08D44;
            --bg: #F5F7FA;
            --bg-light: #EEF3F7;
            --card: #FFFFFF;
            --text: #1A1A1A;
            --text-secondary: #5C6B7A;
            --text-muted: #7A8A99;
            --border: #D9E1E8;
            --error: #B3261E;
            --success: #1E7B4B;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(11, 60, 93, 0.05);
            --shadow-md: 0 8px 24px rgba(11, 60, 93, 0.06);
            --shadow-lg: 0 12px 32px rgba(11, 60, 93, 0.12);
            --shadow-xl: 0 20px 48px rgba(11, 60, 93, 0.16);
            --font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
            --container-max: 1200px;
            --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --header-height: 72px;
        }

        *,
        *::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-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--font-family);
            font-size: 16px;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: var(--header-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
        }
        .logo .logo-mark {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            position: relative;
            overflow: hidden;
        }
        .logo .logo-mark::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--accent);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }
        .nav-desktop a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-desktop a:hover {
            color: var(--primary);
            background: var(--bg-light);
        }
        .nav-desktop a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(11, 60, 93, 0.25);
        }
        .btn-outline {
            background: #fff;
            border: 1px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--bg-light);
            color: var(--primary-dark);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 17px;
            border-radius: var(--radius-sm);
        }
        .btn-block {
            width: 100%;
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            transition: all var(--transition);
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        @media (max-width: 1024px) {
            .nav-desktop {
                gap: 2px;
            }
            .nav-desktop a {
                font-size: 13px;
                padding: 8px 10px;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-desktop {
                display: none;
            }
            .header-inner {
                padding: 0 16px;
            }
            .header-cta .btn {
                padding: 9px 14px;
                font-size: 13px;
            }
        }
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 999;
            padding: 24px 20px;
            overflow-y: auto;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav a {
            display: block;
            padding: 16px 20px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            background: var(--bg-light);
            color: var(--primary);
        }
        .mobile-nav .btn {
            margin-top: 12px;
        }

        /* Sections */
        .section {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
        }
        .section-label {
            display: inline-block;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--accent-light);
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.35;
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 720px;
            margin-bottom: 32px;
        }
        .section-sub {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-dark);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }

        /* Hero */
        .hero {
            background: linear-gradient(180deg, #F8FAFC 0%, var(--bg) 100%);
            padding: 72px 0 64px;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 50%, var(--primary) 100%);
        }
        .hero-inner {
            display: grid;
            grid-template-columns: 1fr 1.4fr 1fr;
            gap: 36px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr 1.4fr;
            }
            .hero-right {
                grid-column: 1 / -1;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }
        @media (max-width: 768px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero-right {
                grid-column: 1;
                display: flex;
                flex-wrap: wrap;
                gap: 12px;
            }
        }
        .hero-left h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary);
            margin-bottom: 16px;
        }
        @media (max-width: 768px) {
            .hero-left h1 {
                font-size: 30px;
            }
        }
        .hero-left .hero-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .hero-value-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 24px;
        }
        .hero-value-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text);
            padding: 10px 14px;
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .hero-value-item::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }
        .hero-center {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
            padding: 16px;
            position: relative;
        }
        .hero-center img {
            border-radius: var(--radius-md);
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .hero-center .hero-float-badge {
            position: absolute;
            bottom: 28px;
            right: 28px;
            background: var(--primary);
            color: #fff;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-right {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .hero-right .hero-stat {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .hero-right .hero-stat:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .hero-stat .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .hero-stat .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        .hero-cta-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* Product Screenshot Stage */
        .stage {
            background: var(--primary);
            padding: 72px 0;
            position: relative;
            color: #fff;
        }
        .stage::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: repeating-linear-gradient(45deg, transparent, transparent 20px, rgba(255, 255, 255, 0.02) 20px, rgba(255, 255, 255, 0.02) 21px);
            pointer-events: none;
        }
        .stage .container {
            position: relative;
            z-index: 2;
        }
        .stage-title {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .stage-desc {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin-bottom: 36px;
        }
        .stage-slider {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        @media (max-width: 768px) {
            .stage-slider {
                grid-template-columns: 1fr;
            }
        }
        .stage-card {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            backdrop-filter: blur(8px);
        }
        .stage-card:hover {
            background: rgba(255, 255, 255, 0.14);
            transform: translateY(-4px);
            box-shadow: var(--shadow-xl);
        }
        .stage-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .stage-card-body {
            padding: 20px;
        }
        .stage-card-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }
        .stage-card-body p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
        }

        /* Channel Selling Points */
        .channels {
            background: var(--bg);
        }
        .channels-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: start;
        }
        @media (max-width: 768px) {
            .channels-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .channels-steps {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .channel-step {
            display: flex;
            gap: 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .channel-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .step-content h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }
        .step-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .channels-objections {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
        }
        .channels-objections h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .objection-item {
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }
        .objection-item:last-child {
            border-bottom: none;
        }
        .objection-item strong {
            display: block;
            font-size: 15px;
            color: var(--text);
            margin-bottom: 4px;
        }
        .objection-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Stats Bar */
        .stats-bar {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 48px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        .stat-block .stat-number {
            font-size: 42px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-block .stat-number .accent {
            color: var(--accent-dark);
        }
        .stat-block .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        /* Social Proof */
        .social-proof {
            background: var(--bg-light);
            padding: 64px 0;
        }
        .social-proof-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 36px;
        }
        .social-rating {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .rating-stars {
            display: flex;
            gap: 4px;
            font-size: 24px;
            color: var(--accent);
        }
        .rating-info {
            font-size: 15px;
            color: var(--text-secondary);
        }
        .rating-info strong {
            color: var(--text);
            font-weight: 600;
        }
        .partner-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .partner-badge {
            padding: 8px 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .partner-badge:hover {
            border-color: var(--primary);
            background: var(--bg-light);
        }
        .partner-badge .badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }
        .partner-desc-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 20px;
        }
        @media (max-width: 768px) {
            .partner-desc-list {
                grid-template-columns: 1fr;
            }
        }
        .partner-desc-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            box-shadow: var(--shadow-sm);
        }
        .partner-desc-item strong {
            color: var(--primary);
            display: block;
            margin-bottom: 4px;
            font-size: 15px;
        }

        /* Testimonials */
        .testimonials {
            background: var(--bg);
        }
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        @media (max-width: 1024px) {
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
        }
        .testimonial-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--primary);
        }
        .testimonial-header {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .testimonial-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
        }
        .testimonial-tag {
            font-size: 13px;
            color: var(--text-muted);
        }
        .testimonial-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* Brand Intro */
        .brand-intro {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 72px 0;
        }
        .brand-intro-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        @media (max-width: 768px) {
            .brand-intro-inner {
                grid-template-columns: 1fr;
            }
        }
        .brand-intro-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .brand-intro-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 12px;
        }
        .brand-intro-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
        }
        .brand-intro-img img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }

        /* News */
        .news {
            background: var(--bg);
        }
        .news-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 32px;
        }
        @media (max-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-item {
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            transition: all var(--transition);
        }
        .news-item:first-child {
            padding-top: 0;
        }
        .news-item:hover {
            padding-left: 8px;
        }
        .news-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
                transition: color var(--transition);
        }
        .news-item:hover h3 {
            color: var(--primary);
        }
        .news-item .news-meta {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 6px;
            display: flex;
            gap: 16px;
        }
        .news-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .news-sidebar {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            height: fit-content;
        }
        .news-sidebar h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .news-sidebar ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .news-sidebar ul li:last-child {
            border-bottom: none;
        }
        .news-sidebar ul li::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        /* FAQ */
        .faq {
            background: var(--bg-light);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            transition: all var(--transition);
            background: #fff;
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 18px;
            color: var(--primary);
            transition: all var(--transition);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            padding: 0 24px;
            border-top: none;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
            border-top: 1px solid var(--border);
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            padding-top: 16px;
        }

        /* Lead Form */
        .lead-form {
            background: #fff;
        }
        .lead-form-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        @media (max-width: 768px) {
            .lead-form-inner {
                grid-template-columns: 1fr;
            }
        }
        .lead-form-info h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .lead-form-info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .lead-form-info ul li {
            font-size: 14px;
            color: var(--text-secondary);
            padding: 8px 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .lead-form-info ul li::before {
            content: '✓';
            color: var(--success);
            font-weight: 700;
            flex-shrink: 0;
        }
        .lead-form-box {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-sm);
        }
        .lead-form-box h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }
        .form-group label .required {
            color: var(--error);
        }
        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: none;
            border-bottom: 2px solid var(--border);
            background: #fff;
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
            font-size: 15px;
            color: var(--text);
            transition: all var(--transition);
        }
        .form-control:focus {
            border-bottom-color: var(--primary);
            box-shadow: 0 2px 0 0 var(--accent);
            outline: none;
        }
        .form-control.error {
            border-bottom-color: var(--error);
        }
        .form-control::placeholder {
            color: var(--text-muted);
        }
        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 fill='%235C6B7A' d='M1 1l5 5 5-5' stroke='%235C6B7A' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
        }
        textarea.form-control {
            resize: vertical;
            min-height: 100px;
            border-bottom: 2px solid var(--border);
        }
        .form-error-msg {
            font-size: 13px;
            color: var(--error);
            margin-top: 6px;
            display: none;
        }
        .form-error-msg.visible {
            display: block;
        }

        /* Privacy */
        .privacy {
            background: var(--bg);
            padding: 60px 0;
        }
        .privacy-inner {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: var(--shadow-sm);
        }
        .privacy-inner h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .privacy-inner p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 12px;
        }
        .privacy-inner ul {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 16px;
        }
        .privacy-inner ul li {
            background: var(--bg-light);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* CTA Section */
        .cta-section {
            background: var(--primary);
            padding: 64px 0;
            color: #fff;
        }
        .cta-inner {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 24px;
        }
        .cta-inner .btn-primary {
            background: #fff;
            color: var(--primary);
        }
        .cta-inner .btn-primary:hover {
            background: var(--accent);
            color: var(--primary-dark);
        }

        /* Footer */
        .site-footer {
            background: #0A2540;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
        }
        .footer-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .footer-brand h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col ul li {
            padding: 6px 0;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        /* Utility */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        @media (max-width: 480px) {
            .btn-lg {
                width: 100%;
                justify-content: center;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .section-title {
                font-size: 24px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0B3C5D;
            --primary-dark: #082B42;
            --primary-light: #0E4A72;
            --accent: #C9A961;
            --accent-light: rgba(201, 169, 97, 0.12);
            --accent-dark: #B08D44;
            --bg: #F5F7FA;
            --bg-light: #EEF3F7;
            --card: #FFFFFF;
            --text: #1A1A1A;
            --text-secondary: #5C6B7A;
            --text-muted: #7A8A99;
            --border: #D9E1E8;
            --error: #B3261E;
            --success: #1E7B4B;
            --warning: #A66A00;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(11, 60, 93, 0.05);
            --shadow-md: 0 8px 24px rgba(11, 60, 93, 0.06);
            --shadow-lg: 0 12px 32px rgba(11, 60, 93, 0.12);
            --shadow-xl: 0 20px 48px rgba(11, 60, 93, 0.16);
            --font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
            --container-max: 1200px;
            --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --header-height: 72px;
        }
        * { 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-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        button, input, select, textarea { font-family: var(--font-family); font-size: 16px; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* Header / Navigation */
        .site-header {
            position: sticky; top: 0; z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            max-width: var(--container-max); margin: 0 auto; padding: 0 24px;
            height: var(--header-height);
            display: flex; align-items: center; justify-content: space-between; gap: 24px;
        }
        .logo { flex-shrink: 0; display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 700; color: var(--primary); letter-spacing: .5px; }
        .logo .logo-mark {
            width: 36px; height: 36px; background: var(--primary);
            border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
            color: #fff; font-size: 16px; font-weight: 700; position: relative; overflow: hidden;
        }
        .logo .logo-mark::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 4px; background: var(--accent); }
        .nav-desktop { display: flex; align-items: center; gap: 6px; flex: 1; justify-content: center; }
        .nav-desktop a {
            display: inline-flex; align-items: center; padding: 8px 14px; font-size: 14px;
            font-weight: 500; color: var(--text); border-radius: var(--radius-sm);
            transition: all var(--transition); white-space: nowrap; position: relative;
        }
        .nav-desktop a:hover { color: var(--primary); background: var(--bg-light); }
        .nav-desktop a.active { color: var(--primary); font-weight: 600; }
        .nav-desktop a.active::after {
            content: ''; position: absolute; bottom: 4px; left: 14px; right: 14px;
            height: 2px; background: var(--accent); border-radius: 2px;
        }
        .header-cta { flex-shrink: 0; }
        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 8px;
            padding: 11px 24px; border-radius: var(--radius-sm); font-size: 15px; font-weight: 600;
            line-height: 1.4; transition: all var(--transition); white-space: nowrap;
        }
        .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
        .btn-primary { background: var(--primary); color: #fff; }
        .btn-primary:hover { background: var(--primary-dark); color: #fff; box-shadow: 0 4px 12px rgba(11, 60, 93, 0.25); }
        .btn-outline { background: #fff; border: 1px solid var(--primary); color: var(--primary); }
        .btn-outline:hover { background: var(--bg-light); color: var(--primary-dark); border-color: var(--primary-dark); }
        .btn-sm { padding: 8px 16px; font-size: 13px; }
        .nav-toggle {
            display: none; flex-direction: column; justify-content: center; gap: 5px;
            width: 40px; height: 40px; border-radius: var(--radius-sm); border: 1px solid var(--border);
        }
        .nav-toggle span { display: block; width: 20px; height: 2px; background: var(--primary); margin: 0 auto; transition: all var(--transition); }
        .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .nav-toggle.open span:nth-child(2) { opacity: 0; }
        .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

        /* Breadcrumb */
        .breadcrumb-section { padding: 20px 0 0; }
        .breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--text-secondary); }
        .breadcrumb a { color: var(--text-secondary); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb .sep { color: var(--text-muted); }
        .breadcrumb .current { color: var(--primary); font-weight: 600; }

        /* Inner Hero */
        .inner-hero {
            padding: 48px 0 56px;
            background: linear-gradient(135deg, #F9FBFD 0%, #EEF3F7 100%);
            border-bottom: 1px solid var(--border);
        }
        .inner-hero-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 48px; align-items: center; }
        .inner-hero .eyebrow {
            display: inline-flex; align-items: center; gap: 8px;
            background: var(--accent-light); color: var(--accent-dark); font-weight: 600; font-size: 13px;
            padding: 6px 14px; border-radius: 999px; margin-bottom: 16px;
        }
        .inner-hero h1 { font-size: 44px; line-height: 1.28; font-weight: 700; color: var(--primary); letter-spacing: -.5px; margin-bottom: 16px; }
        .inner-hero .lead { font-size: 17px; color: var(--text-secondary); max-width: 620px; }
        .inner-hero .hero-stats{
            display: flex; gap: 28px; flex-wrap: wrap; margin-top: 24px;
        }
        .inner-hero .hero-stat {
            background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md);
            padding: 14px 20px; min-width: 120px; box-shadow: var(--shadow-sm);
        }
        .inner-hero .hero-stat .num { font-size: 24px; font-weight: 700; color: var(--primary); line-height: 1.3; }
        .inner-hero .hero-stat .label { font-size: 13px; color: var(--text-secondary); }
        .inner-hero .hero-image {
            background: #fff; border-radius: var(--radius-lg); overflow: hidden;
            box-shadow: var(--shadow-md); border: 1px solid var(--border);
        }
        .inner-hero .hero-image img { width: 100%; height: auto; }

        /* Filter Bar */
        .filter-section { padding: 40px 0 24px; }
        .filter-panel {
            background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md);
            padding: 20px 24px; display: flex; flex-wrap: wrap; align-items: center; gap: 16px;
            box-shadow: var(--shadow-sm);
        }
        .filter-group { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
        .filter-group .label { font-size: 13px; font-weight: 600; color: var(--text-secondary); margin-right: 4px; }
        .filter-btn {
            padding: 7px 16px; border-radius: 999px; border: 1px solid var(--border);
            font-size: 13px; font-weight: 500; color: var(--text-secondary); background: #fff;
            transition: all var(--transition);
        }
        .filter-btn:hover { border-color: var(--primary); color: var(--primary); }
        .filter-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }
        .filter-search {
            margin-left: auto; display: flex; align-items: center; gap: 8px;
            background: var(--bg-light); border-radius: var(--radius-sm); padding: 6px 12px;
        }
        .filter-search input {
            background: transparent; border: none; outline: none; font-size: 14px; width: 160px; color: var(--text);
        }
        .filter-search .search-icon { color: var(--text-muted); }

        /* Compatibility List */
        .compat-section { padding: 24px 0 80px; }
        .compat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
        .compat-card {
            background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md);
            padding: 20px; display: flex; flex-direction: column; gap: 12px;
            box-shadow: var(--shadow-sm); transition: all var(--transition);
        }
        .compat-card:hover { box-shadow: var(--shadow-lg); border-color: var(--primary); transform: translateY(-2px); }
        .compat-card .top-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
        .compat-card .game-name { font-size: 17px; font-weight: 600; color: var(--text); }
        .compat-badge {
            display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600;
            padding: 4px 10px; border-radius: 999px; white-space: nowrap;
        }
        .badge-perfect { background: rgba(30, 123, 75, 0.1); color: var(--success); }
        .badge-high { background: rgba(11, 60, 93, 0.08); color: var(--primary); }
        .badge-tune { background: rgba(166, 106, 0, 0.1); color: var(--warning); }
        .compat-card .detail-row { display: flex; flex-wrap: wrap; gap: 12px 20px; font-size: 13px; color: var(--text-secondary); }
        .compat-card .detail-row span { display: inline-flex; align-items: center; gap: 4px; }
        .compat-card .desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
        .compat-card .cover-placeholder {
            width: 100%; height: 160px; background: var(--bg-light);
            border-radius: var(--radius-sm); overflow: hidden; margin-bottom: 4px;
            border: 1px solid var(--border);
        }
        .compat-card .cover-placeholder img { width: 100%; height: 100%; object-fit: cover; }
        .compat-card .action-link { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
        .compat-card .action-link:hover { color: var(--primary-dark); }

        /* CTA */
        .cta-section { padding: 70px 0; background: var(--primary); color: #fff; }
        .cta-grid { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
        .cta-text h2 { font-size: 30px; font-weight: 700; line-height: 1.4; margin-bottom: 12px; color: #fff; }
        .cta-text p { font-size: 16px; color: rgba(255,255,255,0.8); max-width: 540px; }
        .cta-actions { display: flex; gap: 12px; }
        .btn-white { background: #fff; color: var(--primary); }
        .btn-white:hover { background: var(--bg-light); color: var(--primary-dark); box-shadow: var(--shadow-lg); }
        .btn-outline-white { background: transparent; border: 1px solid rgba(255,255,255,0.5); color: #fff; }
        .btn-outline-white:hover { background: rgba(255,255,255,0.1); color: #fff; border-color: #fff; }

        /* FAQ */
        .faq-section { padding: 80px 0; }
        .section-header { max-width: 700px; margin-bottom: 40px; }
        .section-header h2 { font-size: 32px; font-weight: 700; color: var(--primary); margin-bottom: 12px; line-height: 1.35; }
        .section-header p { font-size: 16px; color: var(--text-secondary); }
        .faq-list { display: flex; flex-direction: column; gap: 12px; }
        .faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; transition: all var(--transition); }
        .faq-item.open { border-color: var(--primary); box-shadow: var(--shadow-md); }
        .faq-question {
            width: 100%; text-align: left; padding: 18px 20px; font-size: 17px; font-weight: 600; color: var(--text);
            display: flex; justify-content: space-between; align-items: center; gap: 16px;
            background: transparent;
        }
        .faq-question:hover { color: var(--primary); }
        .faq-icon { flex-shrink: 0; font-size: 22px; color: var(--primary); transition: transform var(--transition); }
        .faq-item.open .faq-icon { transform: rotate(45deg); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height var(--transition); background: var(--bg-light); }
        .faq-item.open .faq-answer { max-height: 300px; }
        .faq-answer-inner { padding: 16px 20px; font-size: 15px; color: var(--text-secondary); border-left: 3px solid var(--primary); }

        /* Footer */
        .site-footer { background: #0A2540; color: rgba(255,255,255,0.8); padding: 60px 0 0; }
        .footer-inner { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        .footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 32px; padding-bottom: 40px; }
        .footer-brand h3 { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 12px; }
        .footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.7); }
        .footer-col h4 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 12px; }
        .footer-col ul { list-style: none; }
        .footer-col ul li { margin-bottom: 6px; }
        .footer-col ul li a { color: rgba(255,255,255,0.7); font-size: 14px; }
        .footer-col ul li a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 24px;
            display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
            font-size: 13px; color: rgba(255,255,255,0.6);
        }
        .footer-bottom a { color: rgba(255,255,255,0.6); }
        .footer-bottom a:hover { color: var(--accent); }
        .footer-beian { display: flex; gap: 16px; flex-wrap: wrap; }

        /* Mobile Drawer */
        .mobile-drawer {
            display: none; position: fixed; top: var(--header-height); left: 0; right: 0; bottom: 0;
            background: #fff; z-index: 999; padding: 24px; overflow-y: auto;
        }
        .mobile-drawer.open { display: block; }
        .mobile-drawer nav { display: flex; flex-direction: column; gap: 8px; }
        .mobile-drawer nav a {
            display: block; padding: 14px 16px; font-size: 16px; font-weight: 500;
            color: var(--text); border-radius: var(--radius-sm); transition: all var(--transition);
        }
        .mobile-drawer nav a:hover, .mobile-drawer nav a.active { background: var(--bg-light); color: var(--primary); }
        .mobile-drawer .drawer-cta { margin-top: 16px; }

        @media (max-width: 1024px) {
            .inner-hero-grid { grid-template-columns: 1fr; gap: 32px; }
            .inner-hero h1 { font-size: 36px; }
            .compat-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .header-cta { display: none; }
            .nav-toggle { display: flex; }
            .inner-hero { padding: 32px 0 40px; }
            .inner-hero h1 { font-size: 30px; }
            .filter-panel { flex-direction: column; align-items: flex-start; }
            .filter-search { margin-left: 0; width: 100%; }
            .filter-search input { width: 100%; }
            .cta-grid { flex-direction: column; text-align: center; }
            .cta-actions { justify-content: center; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 480px) {
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .inner-hero .hero-stats { flex-direction: column; gap: 12px; }
            .inner-hero .hero-stat { min-width: 100%; text-align: center; }
        }

/* roulang page: category1 */
:root {
            --primary: #0B3C5D;
            --primary-dark: #082B42;
            --primary-light: #0E4A72;
            --accent: #C9A961;
            --accent-light: rgba(201, 169, 97, 0.12);
            --accent-dark: #B08D44;
            --bg: #F5F7FA;
            --bg-light: #EEF3F7;
            --card: #FFFFFF;
            --text: #1A1A1A;
            --text-secondary: #5C6B7A;
            --text-muted: #7A8A99;
            --border: #D9E1E8;
            --error: #B3261E;
            --success: #1E7B4B;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(11, 60, 93, 0.05);
            --shadow-md: 0 8px 24px rgba(11, 60, 93, 0.06);
            --shadow-lg: 0 12px 32px rgba(11, 60, 93, 0.12);
            --shadow-xl: 0 20px 48px rgba(11, 60, 93, 0.16);
            --font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
            --container-max: 1200px;
            --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --header-height: 72px;
        }

        *,
        *::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-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-family);
            font-size: 16px;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: var(--header-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

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

        .logo .logo-mark {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            position: relative;
            overflow: hidden;
        }

        .logo .logo-mark::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--accent);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }

        .nav-desktop a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

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

        .nav-desktop a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(11, 60, 93, 0.25);
        }

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

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

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 14px 28px;
            font-size: 16px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
        }

        .nav-toggle span {
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .breadcrumb {
            padding: 18px 0;
            font-size: 14px;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border);
            background: #fff;
        }

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

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

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

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

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

        .inner-hero {
            position: relative;
            padding: 72px 0 64px;
            background: linear-gradient(180deg, #F0F4F8 0%, #F5F7FA 100%);
            overflow: hidden;
        }

        .inner-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
        }

        .inner-hero-grid {
            display: grid;
            grid-template-columns: 1fr 420px;
            gap: 56px;
            align-items: center;
        }

        .inner-hero-title {
            font-size: 44px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .inner-hero-subtitle {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 560px;
        }

        .inner-hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 28px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .hero-badge .dot {
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
        }

        .inner-hero-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 16/10;
        }

        .inner-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .section {
            padding: 72px 0;
        }

        .section-alt {
            background: #fff;
        }

        .section-header {
            margin-bottom: 40px;
            max-width: 720px;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-dark);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .section-title {
            font-size: 34px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 20px;
        }

        .matrix-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .matrix-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
            transform: translateY(-3px);
        }

        .matrix-card.col-span-5 {
            grid-column: span 5;
        }

        .matrix-card.col-span-7 {
            grid-column: span 7;
        }

        .matrix-card.col-span-4 {
            grid-column: span 4;
        }

        .matrix-card.col-span-6 {
            grid-column: span 6;
        }

        .matrix-card.col-span-12 {
            grid-column: span 12;
        }

        .matrix-icon {
            width: 48px;
            height: 48px;
            background: var(--bg-light);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .matrix-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--primary);
        }

        .matrix-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .feature-points {
            margin-top: 16px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

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

        .feature-points li::before {
            content: '';
            flex-shrink: 0;
            width: 5px;
            height: 5px;
            background: var(--accent);
            border-radius: 50%;
            margin-top: 9px;
        }

        .env-table-wrap {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .env-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
        }

        .env-item {
            padding: 22px 28px;
            border-bottom: 1px solid var(--border);
            border-right: 1px solid var(--border);
            transition: background var(--transition);
        }

        .env-item:nth-child(even) {
            border-right: none;
        }

        .env-item:nth-last-child(-n+2) {
            border-bottom: none;
        }

        .env-item:hover {
            background: var(--bg-light);
        }

        .env-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 4px;
        }

        .env-value {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
        }

        .env-value small {
            font-size: 13px;
            font-weight: 400;
            color: var(--text-muted);
            margin-left: 4px;
        }

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

        .step-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }

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

        .step-number {
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            position: relative;
        }

        .step-number::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .cta-banner {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(201, 169, 97, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-banner-content h2 {
            font-size: 24px; font-weight: 600; margin-bottom: 12px; }
        .cta-banner-content p { font-size: 15px; color: rgba(255,255,255,0.85); line-height: 1.6; max-width: 520px; }
        .cta-banner .btn { background: var(--accent); color: var(--primary-dark); border: none; }
        .cta-banner .btn:hover { background: var(--accent-dark); color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.2); }
        .faq-list { display: flex; flex-direction: column; gap: 12px; }
        .faq-item { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; transition: all var(--transition); }
        .faq-item.open { box-shadow: var(--shadow-md); border-color: var(--primary); }
        .faq-question { width: 100%; padding: 20px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: 18px; font-weight: 600; color: var(--text); background: none; text-align: left; transition: color var(--transition); }
        .faq-question:hover { color: var(--primary); }
        .faq-question .faq-icon { flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%; background: var(--bg-light); display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 18px; transition: all var(--transition); }
        .faq-item.open .faq-question .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
        .faq-answer-inner { padding: 0 24px 20px; font-size: 15px; color: var(--text-secondary); line-height: 1.8; border-left: 3px solid var(--primary); margin-left: 24px; padding-left: 16px; }
        .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
        .contact-info h3 { font-size: 24px; font-weight: 600; color: var(--primary); margin-bottom: 16px; }
        .contact-info p { font-size: 15px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 20px; }
        .contact-info-list { display: flex; flex-direction: column; gap: 12px; }
        .contact-info-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 15px; color: var(--text-secondary); }
        .contact-info-list li::before { content: '›'; color: var(--accent); font-weight: 700; font-size: 18px; line-height: 1; }
        .contact-form { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: 32px; }
        .form-group { margin-bottom: 18px; }
        .form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
        .form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px 14px; border: 2px solid var(--border); border-radius: var(--radius-sm); font-size: 15px; color: var(--text); transition: all var(--transition); background: #fff; }
        .form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); box-shadow: inset 0 -2px 0 var(--accent); }
        .form-group textarea { min-height: 120px; resize: vertical; }
        .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
        .form-footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 24px; flex-wrap: wrap; }
        .form-note { font-size: 13px; color: var(--text-muted); }
        .footer { background: #0A2540; color: rgba(255,255,255,0.85); }
        .footer-inner { max-width: var(--container-max); margin: 0 auto; padding: 56px 24px 0; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
        .footer-brand h3 { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 14px; letter-spacing: 0.5px; }
        .footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.7); max-width: 360px; }
        .footer-col h4 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; letter-spacing: 0.5px; }
        .footer-col ul { display: flex; flex-direction: column; gap: 8px; }
        .footer-col a { color: rgba(255,255,255,0.7); font-size: 14px; transition: color var(--transition); }
        .footer-col a:hover { color: var(--accent); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); padding: 20px 0; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: rgba(255,255,255,0.6); }
        .footer-bottom a { color: rgba(255,255,255,0.6); }
        .footer-bottom a:hover { color: var(--accent); }
        .footer-beian { display: flex; gap: 16px; flex-wrap: wrap; }
        @media (max-width: 1024px) {
            .inner-hero-grid { grid-template-columns: 1fr; gap: 32px; }
            .inner-hero-image { aspect-ratio: 16/9; }
            .matrix-card.col-span-5, .matrix-card.col-span-7 { grid-column: span 6; }
            .contact-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 60px; }
            .container { padding: 0 16px; }
            .header-inner { padding: 0 16px; }
            .nav-desktop { display: none; }
            .header-cta { display: none; }
            .nav-toggle { display: flex; }
            .mobile-menu { display: none; position: fixed; top: var(--header-height); left: 0; right: 0; bottom: 0; background: #fff; z-index: 999; padding: 24px; flex-direction: column; gap: 8px; overflow-y: auto; }
            .mobile-menu.open { display: flex; }
            .mobile-menu a { padding: 14px 16px; font-size: 16px; font-weight: 500; color: var(--text); border-radius: var(--radius-sm); border-bottom: 1px solid var(--bg); }
            .mobile-menu a.active { color: var(--primary); font-weight: 600; background: var(--bg-light); }
            .mobile-menu .btn { width: 100%; justify-content: center; margin-top: 12px; }
            .inner-hero { padding: 40px 0; }
            .inner-hero-title { font-size: 30px; }
            .inner-hero-subtitle { font-size: 16px; }
            .section { padding: 48px 0; }
            .section-title { font-size: 26px; }
            .matrix-grid { grid-template-columns: 1fr; }
            .matrix-card.col-span-5, .matrix-card.col-span-7, .matrix-card.col-span-4, .matrix-card.col-span-6, .matrix-card.col-span-12 { grid-column: span 1; }
            .env-grid { grid-template-columns: 1fr; }
            .env-item { border-right: none; }
            .env-item:nth-last-child(-n+2) { border-bottom: 1px solid var(--border); }
            .env-item:last-child { border-bottom: none; }
            .steps-grid { grid-template-columns: 1fr; }
            .cta-banner { padding: 32px 24px; flex-direction: column; text-align: center; }
            .cta-banner-content h2 { font-size: 22px; }
            .faq-question { font-size: 16px; padding: 16px 18px; }
            .contact-grid { gap: 24px; }
            .form-row { grid-template-columns: 1fr; }
            .form-footer { flex-direction: column; align-items: stretch; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-inner { padding: 40px 16px 0; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .footer-beian { justify-content: center; flex-wrap: wrap; }
        }
        @media (max-width: 480px) {
            .inner-hero-title { font-size: 26px; }
            .section-title { font-size: 22px; }
            .hero-badge { font-size: 12px; padding: 5px 10px; }
            .btn-lg { padding: 12px 20px; font-size: 14px; }
        }

/* roulang page: category3 */
:root {
            --primary: #0B3C5D;
            --primary-dark: #082B42;
            --primary-light: #0E4A72;
            --accent: #C9A961;
            --accent-light: rgba(201, 169, 97, 0.12);
            --accent-dark: #B08D44;
            --bg: #F5F7FA;
            --bg-light: #EEF3F7;
            --card: #FFFFFF;
            --text: #1A1A1A;
            --text-secondary: #5C6B7A;
            --text-muted: #7A8A99;
            --border: #D9E1E8;
            --error: #B3261E;
            --success: #1E7B4B;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(11, 60, 93, 0.05);
            --shadow-md: 0 8px 24px rgba(11, 60, 93, 0.06);
            --shadow-lg: 0 12px 32px rgba(11, 60, 93, 0.12);
            --shadow-xl: 0 20px 48px rgba(11, 60, 93, 0.16);
            --font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
            --container-max: 1200px;
            --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-family);
            font-size: 16px;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: var(--header-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

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

        .logo .logo-mark {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            position: relative;
            overflow: hidden;
        }

        .logo .logo-mark::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--accent);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }

        .nav-desktop a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

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

        .nav-desktop a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(11, 60, 93, 0.25);
        }

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

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

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }

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

        .btn-danger:hover {
            background: #8F1D16;
            color: #fff;
            box-shadow: 0 4px 12px rgba(179, 38, 30, 0.25);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 28px;
            height: 24px;
            justify-content: center;
            align-items: center;
            border-radius: 4px;
            padding: 4px;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.98);
            z-index: 999;
            padding: 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
            box-shadow: var(--shadow-lg);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            display: block;
            padding: 14px 16px;
            font-size: 18px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .mobile-menu a:hover {
            background: var(--bg-light);
            color: var(--primary);
        }

        .mobile-menu a.active {
            background: var(--bg-light);
            color: var(--primary);
            font-weight: 600;
        }

        .mobile-menu .header-cta-mobile {
            margin-top: 16px;
            display: flex;
            gap: 12px;
            flex-direction: column;
        }

        /* Breadcrumb */
        .breadcrumb-nav {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }

        .breadcrumb-nav .container {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--text-secondary);
        }

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

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

        .breadcrumb-nav .separator {
            color: var(--text-muted);
            font-size: 12px;
            user-select: none;
        }

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

        /* Inner Hero */
        .inner-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 64px 0 72px;
            overflow: hidden;
        }

        .inner-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 60, 93, 0.92) 0%, rgba(11, 60, 93, 0.78) 100%);
            z-index: 1;
        }

        .inner-hero .container {
            position: relative;
            z-index: 2;
        }

        .inner-hero-content {
            max-width: 760px;
        }

        .inner-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent-light);
            color: var(--accent);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            border: 1px solid rgba(201, 169, 97, 0.3);
        }

        .inner-hero h1 {
            font-size: 40px;
            font-weight: 700;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .inner-hero p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 620px;
        }

        .inner-hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .inner-hero .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
        }

        .inner-hero .btn-primary:hover {
            background: var(--accent-dark);
            color: #fff;
        }

        /* Tabs */
        .tabs-nav {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 24px;
            border-bottom: 2px solid var(--border);
            padding-bottom: 0;
        }

        .tab-btn {
            padding: 10px 20px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
            transition: all var(--transition);
            border-bottom: 2px solid transparent;
            margin-bottom: -2px;
            position: relative;
        }

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

        .tab-btn.active {
            color: var(--primary);
            font-weight: 600;
            border-bottom-color: var(--accent);
        }

        .tab-panel {
            display: none;
            animation: fadeIn 0.3s ease;
        }

        .tab-panel.active {
            display: block;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Section Shared */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: #fff;
        }

        .section-subtitle {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-dark);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 720px;
            margin-bottom: 32px;
        }

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

        .comparison-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition);
            position: relative;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
        }

        .comparison-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--primary);
        }

        .comparison-card.featured {
            border-color: var(--accent);
            box-shadow: var(--shadow-lg);
        }

        .comparison-card.featured .plan-badge {
            background: var(--accent);
            color: #fff;
        }

        .plan-badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            background: var(--bg-light);
            color: var(--primary);
            margin-bottom: 16px;
            align-self: flex-start;
        }

        .comparison-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }

        .plan-subtitle {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .plan-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 16px;
            aspect-ratio: 16/10;
        }

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

        .plan-specs {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
        }

        .plan-specs li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 8px 0;
            border-bottom: 1px solid var(--bg-light);
        }

        .plan-specs li:last-child {
            border-bottom: none;
        }

        .spec-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--accent-light);
            border-radius: 50%;
            color: var(--accent-dark);
            font-size: 11px;
            font-weight: 700;
        }

        .plan-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 500;
            background: var(--bg-light);
            color: var(--text-secondary);
        }

        .tag-accent {
            background: var(--accent-light);
            color: var(--accent-dark);
            font-weight: 600;
        }

        .tag-success {
            background: rgba(30, 123, 75, 0.1);
            color: var(--success);
        }

        .plan-foot {
            margin-top: auto;
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        /* Matrix Table */
        .matrix-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-sm);
            overflow-x: auto;
        }

        .matrix-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }

        .matrix-table th,
        .matrix-table td {
            padding: 14px 18px;
            text-align: left;
            font-size: 14px;
            border-bottom: 1px solid var(--bg-light);
        }

        .matrix-table th {
            background: var(--bg-light);
            font-weight: 600;
            color: var(--primary);
            font-size: 13px;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .matrix-table td {
            color: var(--text-secondary);
        }

        .matrix-table td:first-child {
            font-weight: 500;
            color: var(--text);
            white-space: nowrap;
        }

        .matrix-table tr:last-child td {
            border-bottom: none;
        }

        .matrix-table .check {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(30, 123, 75, 0.12);
            color: var(--success);
            font-size: 13px;
        }

        .matrix-table .partial {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 2px 8px;
            border-radius: 4px;
            background: var(--accent-light);
            color: var(--accent-dark);
            font-size: 12px;
            font-weight: 600;
            white-space: nowrap;
        }

        /* Stats Strip */
        .stats-strip {
            background: var(--primary);
            padding: 56px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }

        .stat-item {
            text-align: center;
        }

        .stat-number {
            font-size: 42px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: 1px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 8px;
            letter-spacing: 0.5px;
        }

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

        .step-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            transition: all var(--transition);
        }

        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary);
        }

        .step-number {
            width: 40px;
            height: 40px;
            margin: 0 auto 12px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            position: relative;
        }

        .step-number::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

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

        .step-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

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

        .tip-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: all var(--transition);
        }

        .tip-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .tip-icon {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            background: var(--bg-light);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            font-weight: 700;
        }

        .tip-content h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .tip-content p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* CTA Section */
        .cta-section {
            background: var(--primary);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(201, 169, 97, 0.08);
            z-index: 0;
        }

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

        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 28px;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-section .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
        }

        .cta-section .btn-primary:hover {
            background: var(--accent-dark);
            color: #fff;
        }

        .cta-section .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }

        .cta-section .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }

        /* Footer */
        .site-footer {
            background: #0A2540;
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
        }

        .footer-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-beian {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .comparison-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

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

            .header-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .header-inner {
                padding: 0 16px;
            }

            .inner-hero {
                padding: 40px 0 48px;
            }

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

            .section {
                padding: 48px 0;
            }

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

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

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

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

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

            .stat-number {
                font-size: 30px;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }

            .footer-beian {
                flex-direction: column;
                gap: 4px;
            }

            .cta-section h2 {
                font-size: 24px;
            }

            .cta-actions {
                flex-direction: column;
                gap: 10px;
            }

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

            .matrix-card {
                padding: 16px;
            }

            .comparison-card {
                padding: 20px;
            }

            .breadcrumb-nav .container {
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .header-inner {
                padding: 0 12px;
                gap: 12px;
            }

            .logo {
                font-size: 18px;
            }

            .logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 14px;
            }

            .inner-hero h1 {
                font-size: 22px;
            }

            .inner-hero p {
                font-size: 14px;
            }

            .section-title {
                font-size: 20px;
            }

            .section-subtitle {
                font-size: 12px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .stat-number {
                font-size: 24px;
            }

            .stat-label {
                font-size: 12px;
            }

            .comparison-card h3 {
                font-size: 18px;
            }

            .matrix-card {
                padding: 12px;
            }

            .matrix-table th,
            .matrix-table td {
                padding: 10px 12px;
                font-size: 12px;
            }

            .tabs-nav {
                gap: 4px;
            }

            .tab-btn {
                padding: 8px 14px;
                font-size: 13px;
            }

            .inner-hero-actions {
                flex-direction: column;
                gap: 8px;
            }

            .inner-hero-actions .btn {
                width: 100%;
            }

            .comparison-grid {
                gap: 16px;
            }

            .tips-grid {
                gap: 14px;
            }

            .steps-grid {
                gap: 14px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #0B3C5D;
            --primary-dark: #082B42;
            --primary-light: #0E4A72;
            --accent: #C9A961;
            --accent-light: rgba(201, 169, 97, 0.12);
            --accent-dark: #B08D44;
            --bg: #F5F7FA;
            --bg-light: #EEF3F7;
            --card: #FFFFFF;
            --text: #1A1A1A;
            --text-secondary: #5C6B7A;
            --text-muted: #7A8A99;
            --border: #D9E1E8;
            --error: #B3261E;
            --success: #1E7B4B;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(11, 60, 93, 0.05);
            --shadow-md: 0 8px 24px rgba(11, 60, 93, 0.06);
            --shadow-lg: 0 12px 32px rgba(11, 60, 93, 0.12);
            --shadow-xl: 0 20px 48px rgba(11, 60, 93, 0.16);
            --font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
            --container-max: 1200px;
            --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --header-height: 72px;
        }
        *,
        *::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-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input,
        select,
        textarea {
            font-family: var(--font-family);
            font-size: 16px;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: var(--header-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
        }
        .logo .logo-mark {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            position: relative;
            overflow: hidden;
            flex-shrink: 0;
        }
        .logo .logo-mark::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--accent);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }
        .nav-desktop a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-desktop a:hover {
            color: var(--primary);
            background: var(--bg-light);
        }
        .nav-desktop a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .header-cta {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: 2px solid transparent;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(11, 60, 93, 0.25);
        }
        .btn-outline {
            background: #fff;
            border: 1px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--bg-light);
            color: var(--primary-dark);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            border-radius: var(--radius-sm);
            background: var(--bg-light);
            flex-shrink: 0;
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-nav-backdrop {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(6, 18, 30, 0.6);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .mobile-nav-backdrop.open {
            opacity: 1;
        }
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--border);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, #0B3C5D 0%, #082B42 55%, #062033 100%);
            padding: 72px 0 80px;
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 5px;
            background: linear-gradient(90deg, var(--accent), transparent);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .page-hero-content h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.3;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .page-hero-content h1 .highlight {
            color: var(--accent);
        }
        .page-hero-content p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 520px;
        }
        .page-hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-version-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 50px;
            padding: 10px 18px;
            font-size: 14px;
            color: #fff;
            flex-shrink: 0;
        }
        .hero-version-chip .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #4ADE80;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.6);
            }
            50% {
                box-shadow: 0 0 0 6px rgba(74, 222, 128, 0);
            }
        }
        .page-hero-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.25);
            box-shadow: var(--shadow-xl);
            aspect-ratio: 16/10;
            background: rgba(255, 255, 255, 0.06);
        }
        .page-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-overlay-badge {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(6, 20, 33, 0.8);
            color: #fff;
            font-size: 13px;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-tight {
            padding: 56px 0;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-dark);
            background: var(--accent-light);
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }
        .stats-strip {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 0;
            background: var(--card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            margin-bottom: 32px;
        }
        .stat-item {
            padding: 28px 20px;
            text-align: center;
            border-right: 1px solid var(--border);
        }
        .stat-item:last-child {
            border-right: none;
        }
        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            display: block;
            margin-bottom: 4px;
            letter-spacing: -0.5px;
        }
        .stat-number .suffix {
            font-size: 18px;
            font-weight: 600;
            color: var(--accent-dark);
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            letter-spacing: 0.3px;
        }
        .release-tabs {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .release-tab {
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 500;
            border-radius: 50px;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            background: #fff;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .release-tab:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .release-tab.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .timeline-wrap {
            position: relative;
            max-width: 860px;
            margin: 0 auto;
        }
        .timeline-line {
            position: absolute;
            top: 0;
            bottom: 0;
            left: 25px;
            width: 3px;
            background: linear-gradient(180deg, var(--accent) 0%, var(--border) 40%, var(--border) 60%, var(--accent) 100%);
            border-radius: 3px;
        }
        .timeline-item {
            position: relative;
            padding-left: 76px;
            margin-bottom: 42px;
        }
        .timeline-dot {
            position: absolute;
            left: 14px;
            top: 6px;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #fff;
            border: 3px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2;
            transition: all var(--transition);
        }
        .timeline-dot::after {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            transition: all var(--transition);
        }
        .timeline-item:hover .timeline-dot {
            border-color: var(--accent);
            box-shadow: 0 0 0 6px rgba(201, 169, 97, 0.15);
        }
        .timeline-item:hover .timeline-dot::after {
            background: var(--accent);
        }
        .timeline-dot.hot {
            border-color: var(--accent);
        }
        .timeline-dot.hot::after {
            background: var(--accent);
        }
        .timeline-card {
            background: var(--card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 24px 28px;
            transition: all var(--transition);
        }
        .timeline-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: rgba(11, 60, 93, 0.35);
            transform: translateY(-2px);
        }
        .timeline-card-header {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }
        .version-info {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .version-number {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.3px;
        }
        .version-number .stable {
            font-size: 12px;
            font-weight: 600;
            color: var(--success);
            background: rgba(30, 123, 75, 0.12);
            padding: 2px 10px;
            border-radius: 50px;
            margin-left: 10px;
            vertical-align: middle;
        }
        .version-number .test {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-dark);
            background: var(--accent-light);
            padding: 2px 10px;
            border-radius: 50px;
            margin-left: 10px;
            vertical-align: middle;
        }
        .version-number .major {
            font-size: 12px;
            font-weight: 600;
            color: #fff;
            background: var(--primary-dark);
            padding: 2px 10px;
            border-radius: 50px;
            margin-left: 10px;
            vertical-align: middle;
        }
        .version-date {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
            white-space: nowrap;
        }
        .version-tag-list {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .version-tag {
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 4px;
            background: var(--bg-light);
            color: var(--text-secondary);
            font-weight: 500;
        }
        .version-tag.accent {
            background: var(--accent-light);
            color: var(--accent-dark);
        }
        .timeline-update-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .timeline-update-list li {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            padding-left: 20px;
            position: relative;
        }
        .timeline-update-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }
        .timeline-update-list li strong {
            color: var(--text);
            font-weight: 600;
        }
        .version-showcase {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            padding: 48px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .version-showcase-content h3 {
            font-size: 26px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 16px;
        }
        .version-showcase-content p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 20px;
            line-height: 1.7;
        }
        .version-showcase-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 24px;
        }
        .version-showcase-list li {
            font-size: 14px;
            color: var(--text-secondary);
            padding-left: 22px;
            position: relative;
            line-height: 1.7;
        }
        .version-showcase-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            font-size: 13px;
            font-weight: 700;
            color: var(--success);
        }
        .version-showcase-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            aspect-ratio: 4/3;
        }
        .version-showcase-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .roadmap-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 16px;
        }
        .roadmap-card {
            background: var(--card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .roadmap-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
        }
        .roadmap-card.upcoming::before {
            background: var(--accent);
        }
        .roadmap-card.planning::before {
            background: var(--border);
        }
        .roadmap-card .roadmap-badge {
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 50px;
            display: inline-block;
            margin-bottom: 8px;
        }
        .roadmap-card .roadmap-badge.soon {
            background: var(--accent-light);
            color: var(--accent-dark);
        }
        .roadmap-card .roadmap-badge.working {
            background: rgba(11, 60, 93, 0.1);
            color: var(--primary);
        }
        .roadmap-card .roadmap-badge.planned {
            background: var(--bg-light);
            color: var(--text-muted);
        }
        .roadmap-card h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }
        .roadmap-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(11, 60, 93, 0.3);
        }
        .faq-item.active {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-item.active .faq-question::after {
            transform: rotate(45deg);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            transition: all var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question::after {
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--accent-dark);
            transition: transform var(--transition);
            flex-shrink: 0;
            line-height: 1;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: all var(--transition);
            padding: 0 24px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            background: var(--bg-light);
        }
        .faq-answer-inner {
            border-left: 3px solid var(--primary);
            padding-left: 16px;
        }
        .cta-banner {
            background: var(--primary-dark);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            box-shadow: var(--shadow-xl);
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            pointer-events: none;
        }
        .cta-banner .container {
            position: relative;
            z-index: 2;
        }
        .cta-banner h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-banner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.78);
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-banner .btn {
            font-size: 16px;
            padding: 14px 32px;
        }
        .cta-banner .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }
        .cta-banner .btn-primary:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(201, 169, 97, 0.4);
        }
        .site-footer {
            background: #0A2540;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
            margin-top: 0;
        }
        .footer-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-beian {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
            font-size: 12px;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 1024px) {
            .page-hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .page-hero {
                padding: 48px 0 56px;
                min-height: auto;
            }
            .page-hero-content h1 {
                font-size: 34px;
            }
            .page-hero-image {
                aspect-ratio: 16/9;
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 0;
            }
            .stat-item {
                border-right: 1px solid var(--border);
                border-bottom: 1px solid var(--border);
            }
            .stat-item:nth-child(2n) {
                border-right: none;
            }
            .stat-item:nth-child(5) {
                border-bottom: none;
                grid-column: 1 / -1;
                border-right: none;
            }
            .stat-item:nth-child(4) {
                border-bottom: 1px solid var(--border);
            }
            .roadmap-grid {
                grid-template-columns: 1fr;
                max-width: 500px;
                margin: 16px auto 0;
            }
            .version-showcase {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-desktop {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: #fff;
                flex-direction: column;
                justify-content: flex-start;
                align-items: stretch;
                padding: 20px 24px 40px;
                gap: 4px;
                transform: translateX(100%);
                transition: transform var(--transition);
                z-index: 998;
                overflow-y: auto;
            }
            .nav-desktop.open {
                transform: translateX(0);
            }
            .nav-desktop a {
                padding: 14px 16px;
                font-size: 16px;
                border-radius: var(--radius-sm);
                justify-content: flex-start;
            }
            .nav-desktop a.active::after {
                display: none;
            }
            .nav-desktop a.active {
                background: var(--bg-light);
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-nav-backdrop {
                display: block;
                pointer-events: none;
            }
            .mobile-nav-backdrop.open {
                pointer-events: auto;
            }
            .header-cta .btn {
                display: none;
            }
            .section {
                padding: 56px 0;
            }
            .section-tight {
                padding: 40px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .timeline-wrap {
                max-width: 100%;
            }
            .timeline-line {
                left: 20px;
            }
            .timeline-item {
                padding-left: 60px;
                margin-bottom: 28px;
            }
            .timeline-dot {
                left: 9px;
                width: 24px;
                height: 24px;
            }
            .timeline-dot::after {
                width: 6px;
                height: 6px;
            }
            .timeline-card {
                padding: 18px 16px;
            }
            .version-number {
                font-size: 17px;
            }
            .version-date {
                font-size: 12px;
            }
            .stats-strip {
                grid-template-columns: 1fr;
            }
            .stat-item,
            .stat-item:nth-child(2n),
            .stat-item:nth-child(4n),
            .stat-item:nth-child(5) {
                border-right: none;
                border-bottom: 1px solid var(--border);
                grid-column: 1;
            }
            .stat-item:last-child {
                border-bottom: none;
            }
            .cta-banner {
                padding: 40px 20px;
            }
            .cta-banner h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .footer-beian {
                flex-direction: column;
                gap: 4px;
            }
            .release-tabs {
                gap: 8px;
            }
            .release-tab {
                font-size: 13px;
                padding: 8px 14px;
            }
            .breadcrumb {
                font-size: 12px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
                gap: 12px;
            }
            .logo {
                font-size: 18px;
            }
            .logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }
            .page-hero {
                padding: 36px 0 44px;
            }
            .page-hero-content h1 {
                font-size: 28px;
            }
            .page-hero-content p {
                font-size: 15px;
            }
            .hero-version-chip {
                font-size: 12px;
                padding: 8px 14px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .timeline-item {
                padding-left: 48px;
            }
            .timeline-line {
                left: 14px;
                width: 2px;
            }
            .timeline-dot {
                left: 4px;
                width: 22px;
                height: 22px;
            }
            .timeline-dot::after {
                width: 5px;
                height: 5px;
            }
            .version-showcase {
                padding: 32px 0;
            }
            .version-showcase-content h3 {
                font-size: 21px;
            }
            .cta-banner .btn {
                font-size: 14px;
                padding: 12px 24px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #0B3C5D;
            --primary-dark: #082B42;
            --primary-light: #0E4A72;
            --accent: #C9A961;
            --accent-light: rgba(201, 169, 97, 0.12);
            --accent-dark: #B08D44;
            --bg: #F5F7FA;
            --bg-light: #EEF3F7;
            --card: #FFFFFF;
            --text: #1A1A1A;
            --text-secondary: #5C6B7A;
            --text-muted: #7A8A99;
            --border: #D9E1E8;
            --error: #B3261E;
            --success: #1E7B4B;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(11, 60, 93, 0.05);
            --shadow-md: 0 8px 24px rgba(11, 60, 93, 0.06);
            --shadow-lg: 0 12px 32px rgba(11, 60, 93, 0.12);
            --shadow-xl: 0 20px 48px rgba(11, 60, 93, 0.16);
            --font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
            --container-max: 1200px;
            --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --header-height: 72px;
        }

        * {
            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-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-family);
            font-size: 16px;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: var(--header-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
        }
        .logo .logo-mark {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            position: relative;
            overflow: hidden;
        }
        .logo .logo-mark::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--accent);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }
        .nav-desktop a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-desktop a:hover {
            color: var(--primary);
            background: var(--bg-light);
        }
        .nav-desktop a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(11, 60, 93, 0.25);
        }
        .btn-outline {
            background: #fff;
            border: 1px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--bg-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .btn-sm {
            padding: 9px 20px;
            font-size: 14px;
        }
        .btn-lg {
            padding: 14px 30px;
            font-size: 16px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary);
            margin: 3px 0;
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 999;
            padding: 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
            box-shadow: var(--shadow-lg);
        }
        .mobile-menu a {
            display: block;
            padding: 16px 20px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--bg-light);
            color: var(--primary);
            border-color: var(--primary);
        }

        @media (max-width: 1024px) {
            .nav-desktop {
                display: none;
            }
            .header-cta .btn {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
        }

        .hero {
            background: linear-gradient(120deg, #EAF0F6 0%, #F8FAFC 45%, #EEF3F7 100%);
            padding: 96px 0 80px;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
            background-size: 48px 48px;
            opacity: 0.3;
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .hero-title {
            font-size: 52px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--primary);
            letter-spacing: -0.5px;
            margin-bottom: 24px;
        }
        .hero-title span {
            color: var(--accent-dark);
        }
        .hero-desc {
            font-size: 18px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 32px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .hero-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-meta .dot {
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
        }
        .hero-panel {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            border: 1px solid var(--border);
            overflow: hidden;
        }
        .hero-panel img {
            width: 100%;
            height: auto;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .hero-panel-body {
            padding: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            border-top: 1px solid var(--border);
        }
        .hero-panel-body .badge {
            background: var(--accent-light);
            color: var(--accent-dark);
            padding: 6px 12px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
        }
        .hero-panel-body .info {
            font-size: 14px;
            color: var(--text-secondary);
        }

        @media (max-width: 768px) {
            .hero {
                padding: 48px 0 56px;
            }
            .hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: 36px;
            }
            .hero-desc {
                font-size: 16px;
            }
        }

        .section {
            padding: 88px 0;
        }
        .section-head {
            max-width: 680px;
            margin-bottom: 48px;
        }
        .section-head h2 {
            font-size: 36px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .asym-grid {
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: 24px;
        }
        .asym-grid.reverse {
            grid-template-columns: 1.1fr 1fr;
        }
        .feature-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .feature-card .icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 20px;
            color: var(--primary);
        }
        .feature-card h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text);
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .feature-card .arrow-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 20px;
        }
        .feature-card .arrow-link:hover {
            color: var(--accent-dark);
        }
        .feature-card .img-holder {
            width: 100%;
            aspect-ratio: 4/3;
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 20px;
            background: var(--bg-light);
        }
        .feature-card .img-holder img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .stats-band {
            background: var(--primary);
            padding: 56px 0;
            color: #fff;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: left;
            padding: 24px;
            border-left: 2px solid var(--accent);
            background: rgba(255,255,255,0.04);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
        }
        .stat-num {
            font-size: 42px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            margin-top: 8px;
        }
        .case-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .case-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
            background: var(--card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .case-item:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }
        .case-item.reverse {
            direction: rtl;
        }
        .case-item.reverse > * {
            direction: ltr;
        }
        .case-thumb {
            border-radius: var(--radius-md);
            overflow: hidden;
            aspect-ratio: 16/10;
            background: var(--bg-light);
        }
        .case-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .case-content h3 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--primary);
        }
        .case-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .case-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            padding: 4px 12px;
            background: var(--bg-light);
            color: var(--primary);
            border-radius: 50px;
            font-size: 12px;
            font-weight: 500;
        }
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .solution-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .solution-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .solution-card h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--primary);
        }
        .solution-card .badge {
            align-self: flex-start;
            background: var(--accent-light);
            color: var(--accent-dark);
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .solution-card ul {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
        }
        .solution-card ul li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 10px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .solution-card ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 12px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            margin-bottom: 12px;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            cursor: pointer;
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            transition: color var(--transition);
            background: transparent;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .icon {
            font-size: 22px;
            color: var(--accent-dark);
            transition: transform var(--transition);
        }
        .faq-question.open .icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0;
            background: var(--bg-light);
            border-left: 3px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }
        .faq-answer.open {
            max-height: 400px;
            padding: 16px 20px;
            margin-bottom: 16px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .news-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text);
        }
        .news-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .news-date {
            font-size: 13px;
            color: var(--text-muted);
            display: block;
        }
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }
        .testimonial-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-author .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-light);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
        }
        .testimonial-author .info {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }
        .testimonial-author .info small {
            display: block;
            font-weight: 400;
            color: var(--text-muted);
            font-size: 12px;
        }
        .partner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 32px;
        }
        .partner-tag {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 24px;
            box-shadow: var(--shadow-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .partner-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-md);
        }
        .brand-intro {
            background: var(--card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 48px;
            box-shadow: var(--shadow-md);
        }
        .brand-intro h3 {
            font-size: 28px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 20px;
        }
        .brand-intro p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .cta-section {
            background: var(--primary);
            color: #fff;
            padding: 88px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255,255,255,0.8);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .cta-section .btn {
            background: var(--accent);
            color: var(--text);
            border: none;
            font-size: 16px;
            padding: 14px 32px;
        }
        .cta-section .btn:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: 0 6px 18px rgba(0,0,0,0.2);
        }

        .contact-form-wrap {
            background: var(--card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 48px;
            box-shadow: var(--shadow-md);
            max-width: 720px;
            margin: 0 auto;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }
        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-bottom: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 15px;
            color: var(--text);
            background: #fff;
            transition: all var(--transition);
        }
        .form-control:focus {
            border-bottom-color: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(11, 60, 93, 0.08);
        }
        .form-control.error {
            border-color: var(--error);
            border-bottom-color: var(--error);
        }
        .form-error-text {
            font-size: 13px;
            color: var(--error);
            margin-top: 4px;
        }
        .form-hint {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .footer {
            background: #0A2540;
            color: rgba(255,255,255,0.75);
        }
        .footer-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 64px 24px 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-brand h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: rgba(255,255,255,0.5);
        }
        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.5);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .asym-grid,
            .asym-grid.reverse,
            .case-item,
            .case-item.reverse {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .solution-grid,
            .testimonial-grid,
            .news-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .contact-form-wrap {
                padding: 28px;
            }
            .brand-intro {
                padding: 28px;
            }
            .stat-num {
                font-size: 32px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 30px;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }