/* roulang page: index */
:root {
            --color-bg: oklch(97% 0.008 85);
            --color-surface: oklch(100% 0 0);
            --color-border: oklch(88% 0.012 85);
            --color-text-body: oklch(26% 0.018 250);
            --color-text-muted: oklch(54% 0.014 250);
            --color-accent: oklch(48% 0.13 195);
            --color-accent-light: oklch(94% 0.04 195);
            --color-accent-hover: oklch(42% 0.13 195);
            --color-cta: oklch(64% 0.16 72);
            --color-cta-hover: oklch(57% 0.16 72);
            --shadow-card: 0 1px 3px oklch(0% 0 0 / 0.06), 0 4px 12px oklch(0% 0 0 / 0.04);
            --shadow-float: 0 8px 32px oklch(0% 0 0 / 0.12);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
        }

        @media (prefers-color-scheme: dark) {
            :root {
                --color-bg: oklch(14% 0.015 250);
                --color-surface: oklch(20% 0.015 250);
                --color-border: oklch(30% 0.015 250);
                --color-text-body: oklch(92% 0.008 85);
                --color-text-muted: oklch(64% 0.012 250);
                --color-accent: oklch(62% 0.13 195);
                --color-accent-light: oklch(22% 0.06 195);
                --color-cta: oklch(70% 0.16 72);
                --color-cta-hover: oklch(62% 0.16 72);
            }
        }

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

        body {
            font-family: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--color-bg);
            color: var(--color-text-body);
            font-size: 1rem;
            line-height: 1.75;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color 0.2s;
        }

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

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

        button, .btn {
            border: none;
            cursor: pointer;
            font-family: inherit;
            transition: all 0.2s;
        }

        input, textarea {
            font-family: inherit;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 0.625rem 0.875rem;
            background: var(--color-surface);
            color: var(--color-text-body);
        }

        input:focus, textarea:focus {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        /* Header & Navigation */
        header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-card);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0;
            gap: 2rem;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-accent);
            white-space: nowrap;
        }

        nav {
            display: flex;
            align-items: center;
            gap: 2rem;
            flex: 1;
        }

        .nav-links {
            display: flex;
            gap: 1.75rem;
            list-style: none;
            flex: 1;
        }

        .nav-links a {
            color: var(--color-text-body);
            font-weight: 500;
            font-size: 0.9375rem;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--color-accent);
            border-bottom-color: var(--color-accent);
        }

        .nav-cta {
            background: var(--color-cta);
            color: white;
            padding: 0.625rem 1.5rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9375rem;
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--color-cta-hover);
            color: white;
            transform: translateY(-1px);
            box-shadow: var(--shadow-float);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text-body);
            cursor: pointer;
        }

        /* Hero - Bento Grid */
        .hero {
            padding: 3rem 0 4rem;
        }

        .hero-bento {
            display: grid;
            grid-template-columns: 2fr 1fr;
            grid-template-rows: auto auto;
            gap: 1.25rem;
        }

        .hero-main {
            grid-row: 1 / 3;
            background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
            border-radius: var(--radius-lg);
            padding: 3rem;
            color: white;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .hero-main h1 {
            font-size: clamp(1.9rem, 5vw, 3.2rem);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 1.25rem;
        }

        .hero-main p {
            font-size: 1.125rem;
            line-height: 1.7;
            margin-bottom: 2rem;
            opacity: 0.95;
            max-width: 42rem;
        }

        .hero-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--color-cta);
            color: white;
            padding: 0.875rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-primary:hover {
            background: var(--color-cta-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-float);
            color: white;
        }

        .btn-secondary {
            background: rgba(255,255,255,0.15);
            color: white;
            padding: 0.875rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            backdrop-filter: blur(10px);
        }

        .btn-secondary:hover {
            background: rgba(255,255,255,0.25);
            color: white;
        }

        .hero-feature {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 2rem;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .hero-feature h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
            color: var(--color-text-body);
        }

        .hero-feature p {
            color: var(--color-text-muted);
            font-size: 0.9375rem;
            line-height: 1.6;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            margin-top: 1rem;
        }

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

        .stat-value {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-accent);
            display: block;
        }

        .stat-label {
            font-size: 0.8125rem;
            color: var(--color-text-muted);
        }

        .hero-cta-bar {
            background: var(--color-accent-light);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }

        .hero-cta-bar .text {
            font-weight: 600;
            color: var(--color-accent);
        }

        .hero-cta-bar .btn-small {
            background: var(--color-accent);
            color: white;
            padding: 0.625rem 1.5rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9375rem;
            white-space: nowrap;
        }

        .hero-cta-bar .btn-small:hover {
            background: var(--color-accent-hover);
            color: white;
        }

        /* Section Base */
        section {
            padding: 4rem 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }

        .section-header h2 {
            font-size: clamp(1.35rem, 3vw, 2rem);
            font-weight: 600;
            line-height: 1.35;
            margin-bottom: 1rem;
        }

        .section-header p {
            color: var(--color-text-muted);
            max-width: 48rem;
            margin: 0 auto;
            font-size: 1.0625rem;
        }

        /* Group Activity Section */
        .group-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .step-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: transform 0.2s, box-shadow 0.2s;
        }

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

        .step-number {
            width: 3rem;
            height: 3rem;
            background: var(--color-accent-light);
            color: var(--color-accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.25rem;
            margin: 0 auto 1rem;
        }

        .step-card h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            margin-bottom: 0.625rem;
        }

        .step-card p {
            color: var(--color-text-muted);
            font-size: 0.9375rem;
            line-height: 1.6;
        }

        /* Hot Deals Grid */
        .deals-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .deal-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.2s, box-shadow 0.2s;
        }

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

        .deal-image {
            width: 100%;
            height: 200px;
            background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-border) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: var(--color-accent);
        }

        .deal-content {
            padding: 1.5rem;
        }

        .deal-tag {
            display: inline-block;
            background: var(--color-accent-light);
            color: var(--color-accent);
            padding: 0.25rem 0.75rem;
            border-radius: 50px;
            font-size: 0.8125rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
        }

        .deal-content h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .deal-content p {
            color: var(--color-text-muted);
            font-size: 0.9375rem;
            margin-bottom: 1rem;
            line-height: 1.6;
        }

        .deal-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 1rem;
            border-top: 1px solid var(--color-border);
        }

        .deal-price {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-cta);
        }

        .deal-join {
            background: var(--color-accent);
            color: white;
            padding: 0.5rem 1.25rem;
            border-radius: 50px;
            font-size: 0.875rem;
            font-weight: 600;
        }

        .deal-join:hover {
            background: var(--color-accent-hover);
            color: white;
        }

        /* Content List Section */
        .content-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 2rem;
        }

        .content-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }

        .content-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
            display: flex;
            gap: 1.25rem;
            transition: transform 0.2s;
        }

        .content-item:hover {
            transform: translateX(4px);
        }

        .content-icon {
            width: 3.5rem;
            height: 3.5rem;
            background: var(--color-accent-light);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--color-accent);
            flex-shrink: 0;
        }

        .content-text h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .content-text h3 a {
            color: var(--color-text-body);
        }

        .content-text h3 a:hover {
            color: var(--color-accent);
        }

        .content-text p {
            color: var(--color-text-muted);
            font-size: 0.9375rem;
            line-height: 1.6;
        }

        .content-meta {
            display: flex;
            gap: 1rem;
            margin-top: 0.75rem;
            font-size: 0.8125rem;
            color: var(--color-text-muted);
        }

        .content-sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .sidebar-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
        }

        .sidebar-card h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            margin-bottom: 1rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--color-accent);
        }

        .sidebar-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.875rem;
        }

        .sidebar-list a {
            color: var(--color-text-body);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9375rem;
        }

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

        .sidebar-list a::before {
            content: "▸";
            color: var(--color-accent);
            font-weight: 700;
        }

        /* Highlight Wall */
        .highlight-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .highlight-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 2rem;
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: all 0.2s;
        }

        .highlight-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-float);
        }

        .highlight-icon {
            width: 4rem;
            height: 4rem;
            background: var(--color-accent-light);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--color-accent);
            margin: 0 auto 1.25rem;
        }

        .highlight-card h3 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
        }

        .highlight-card p {
            color: var(--color-text-muted);
            font-size: 0.9375rem;
            line-height: 1.6;
            margin-bottom: 1.25rem;
        }

        .highlight-badge {
            display: inline-block;
            background: var(--color-cta);
            color: white;
            padding: 0.375rem 1rem;
            border-radius: 50px;
            font-size: 0.8125rem;font-weight: 600;
        }

        /* Offer Tiers */
        .tier-container {
            background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-surface) 100%);
            border-radius: var(--radius-lg);
            padding: 3rem;
        }

        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .tier-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 2rem;
            box-shadow: var(--shadow-card);
            position: relative;
            transition: transform 0.2s;
        }

        .tier-card:hover {
            transform: scale(1.03);
        }

        .tier-card.featured {
            border: 2px solid var(--color-accent);
        }

        .tier-badge {
            position: absolute;
            top: -0.75rem;
            right: 1.5rem;
            background: var(--color-cta);
            color: white;
            padding: 0.375rem 1rem;
            border-radius: 50px;
            font-size: 0.8125rem;
            font-weight: 600;
        }

        .tier-level {
            font-size: 0.9375rem;
            color: var(--color-accent);
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .tier-discount {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text-body);
            margin-bottom: 0.5rem;
        }

        .tier-desc {
            color: var(--color-text-muted);
            font-size: 0.9375rem;
            margin-bottom: 1.5rem;
            line-height: 1.6;
        }

        .tier-benefits {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            margin-bottom: 1.5rem;
        }

        .tier-benefits li {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9375rem;
            color: var(--color-text-body);
        }

        .tier-benefits li::before {
            content: "✓";
            color: var(--color-accent);
            font-weight: 700;
            font-size: 1.125rem;
        }

        .tier-cta {
            background: var(--color-accent);
            color: white;
            padding: 0.75rem 1.5rem;
            border-radius: 50px;
            font-weight: 600;
            text-align: center;
            display: block;
            width: 100%;
        }

        .tier-cta:hover {
            background: var(--color-accent-hover);
            color: white;
        }

        .tier-card.featured .tier-cta {
            background: var(--color-cta);
        }

        .tier-card.featured .tier-cta:hover {
            background: var(--color-cta-hover);
        }

        /* Trust Section */
        .trust-section {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 3rem;
            box-shadow: var(--shadow-card);
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-top: 2rem;
        }

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

        .trust-icon {
            width: 3.5rem;
            height: 3.5rem;
            background: var(--color-accent-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--color-accent);
            margin: 0 auto 1rem;
        }

        .trust-item h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .trust-item p {
            color: var(--color-text-muted);
            font-size: 0.875rem;
            line-height: 1.5;
        }

        /* FAQ Section */
        .faq-list {
            max-width: 56rem;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 1.75rem;
            box-shadow: var(--shadow-card);
        }

        .faq-item h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            margin-bottom: 0.875rem;
            color: var(--color-accent);
        }

        .faq-item p {
            color: var(--color-text-muted);
            line-height: 1.7;
            font-size: 0.9375rem;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
            border-radius: var(--radius-lg);
            padding: 4rem 3rem;
            text-align: center;
            color: white;
        }

        .cta-section h2 {
            font-size: clamp(1.5rem, 4vw, 2.5rem);
            font-weight: 700;
            margin-bottom: 1.25rem;
        }

        .cta-section p {
            font-size: 1.125rem;
            margin-bottom: 2rem;
            opacity: 0.95;
            max-width: 42rem;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-buttons .btn-primary {
            background: white;
            color: var(--color-accent);
        }

        .cta-buttons .btn-primary:hover {
            background: var(--color-cta);
            color: white;
        }

        .cta-buttons .btn-secondary {
            border: 2px solid white;
        }

        /* Footer */
        footer {
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 3rem;
            margin-bottom: 2.5rem;
        }

        .footer-brand h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: 1rem;
        }

        .footer-brand p {
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 1.25rem;
            font-size: 0.9375rem;
        }

        .footer-social {
            display: flex;
            gap: 0.75rem;
        }

        .social-icon {
            width: 2.5rem;
            height: 2.5rem;
            background: var(--color-accent-light);
            color: var(--color-accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.125rem;
            transition: all 0.2s;
        }

        .social-icon:hover {
            background: var(--color-accent);
            color: white;
            transform: translateY(-3px);
        }

        .footer-section h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.625rem;
        }

        .footer-links a {
            color: var(--color-text-muted);
            font-size: 0.9375rem;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            padding-top: 2rem;
            border-top: 1px solid var(--color-border);
            text-align: center;
            color: var(--color-text-muted);
            font-size: 0.875rem;
        }

        /* Fixed Bottom CTA */
        .fixed-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            padding: 1rem;
            box-shadow: 0 -4px 12px oklch(0% 0 0 / 0.08);
            z-index: 90;
            display: none;
        }

        .fixed-cta.visible {
            display: block;
        }

        .fixed-cta-inner {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }

        .fixed-cta-text {
            font-weight: 600;
            color: var(--color-text-body);
        }

        .fixed-cta .btn-primary {
            padding: 0.75rem 2rem;
        }

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

            .hero-main {
                grid-row: auto;
            }

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

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

            .content-layout {
                grid-template-columns: 1fr;
            }

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

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

        @media (max-width: 768px) {
            .header-inner {
                padding: 0.875rem 0;
            }

            .nav-links {
                display: none;
            }

            .mobile-toggle {
                display: block;
            }

            nav {
                gap: 1rem;
            }

            .nav-cta {
                padding: 0.5rem 1rem;
                font-size: 0.875rem;
            }

            .hero {
                padding: 2rem 0 3rem;
            }

            .hero-main {
                padding: 2rem;
            }

            .hero-main h1 {
                font-size: 1.75rem;
            }

            .hero-main p {
                font-size: 1rem;
            }

            .hero-actions {
                flex-direction: column;
            }

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

            .hero-stats {
                grid-template-columns: 1fr;
            }

            .deals-grid,
            .tier-grid,
            .highlight-grid,
            .group-steps,
            .trust-grid {
                grid-template-columns: 1fr;
            }

            section {
                padding: 3rem 0;
            }

            .section-header {
                margin-bottom: 2rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .fixed-cta-inner {
                flex-direction: column;
                text-align: center;
            }

            .fixed-cta .btn-primary {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .hero-cta-bar {
                flex-direction: column;
                text-align: center;
            }

            .hero-cta-bar .btn-small {
                width: 100%;
            }
        }

/* roulang page: category1 */
:root {
            --color-bg: oklch(97% 0.008 85);
            --color-surface: oklch(100% 0 0);
            --color-border: oklch(88% 0.012 85);
            --color-text-body: oklch(26% 0.018 250);
            --color-text-muted: oklch(54% 0.014 250);
            --color-accent: oklch(48% 0.13 195);
            --color-accent-light: oklch(94% 0.04 195);
            --color-accent-hover: oklch(42% 0.13 195);
            --color-cta: oklch(64% 0.16 72);
            --color-cta-hover: oklch(57% 0.16 72);
            --shadow-card: 0 1px 3px oklch(0% 0 0 / 0.06), 0 4px 12px oklch(0% 0 0 / 0.04);
            --shadow-float: 0 8px 32px oklch(0% 0 0 / 0.12);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
        }
        
        @media (prefers-color-scheme: dark) {
            :root {
                --color-bg: oklch(14% 0.015 250);
                --color-surface: oklch(20% 0.015 250);
                --color-border: oklch(30% 0.015 250);
                --color-text-body: oklch(92% 0.008 85);
                --color-text-muted: oklch(64% 0.012 250);
                --color-accent: oklch(62% 0.13 195);
                --color-accent-light: oklch(22% 0.06 195);
                --color-cta: oklch(70% 0.16 72);
                --color-cta-hover: oklch(64% 0.16 72);
            }
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--color-text-body);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
        }
        
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button, input {
            font-family: inherit;
            border: none;
            outline: none;
        }
        
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }
        
        header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-card);
        }
        
        header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        
        .logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-accent);
        }
        
        nav {
            display: flex;
            align-items: center;
            gap: 48px;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
            gap: 32px;
        }
        
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-muted);
            transition: color 0.2s ease;
        }
        
        .nav-links a:hover {
            color: var(--color-accent);
        }
        
        .nav-links a.active {
            color: var(--color-accent);
            font-weight: 600;
        }
        
        .nav-cta {
            display: inline-block;
            padding: 10px 24px;
            background: var(--color-cta);
            color: white;
            font-weight: 600;
            font-size: 0.9rem;
            border-radius: 40px;
            transition: all 0.2s ease;
        }
        
        .nav-cta:hover {
            background: var(--color-cta-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-float);
        }
        
        .hero-category {
            position: relative;
            background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-surface) 100%);
            padding: 80px 0 60px;
            overflow: hidden;
        }
        
        .hero-category::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: url('data:image/svg+xml,<svg width="800" height="600" xmlns="http://www.w3.org/2000/svg"><defs><linearGradient id="g" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" style="stop-color:oklch(62% 0.13 195);stop-opacity:0.08"/><stop offset="100%" style="stop-color:oklch(62% 0.13 195);stop-opacity:0.02"/></linearGradient></defs><rect width="800" height="600" fill="url(/%23g)"/><circle cx="650" cy="120" r="180" fill="oklch(62% 0.13 195)" opacity="0.05"/><circle cx="720" cy="350" r="120" fill="oklch(62% 0.13 195)" opacity="0.04"/></svg>') center/cover no-repeat;
            pointer-events: none;
        }
        
        .hero-category .container {
            position: relative;
            z-index: 2;
        }
        
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-bottom: 24px;
        }
        
        .breadcrumb a {
            color: var(--color-accent);
        }
        
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        
        .hero-category h1 {
            font-size: clamp(1.9rem, 5vw, 3.2rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--color-text-body);
            margin-bottom: 20px;
        }
        
        .hero-category .lead {
            font-size: 1.15rem;
            line-height: 1.7;
            color: var(--color-text-muted);
            max-width: 720px;
            margin-bottom: 36px;
        }
        
        .region-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
        }
        
        .region-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-accent);
            transition: all 0.2s ease;
        }
        
        .region-tag:hover {
            background: var(--color-accent-light);
            border-color: var(--color-accent);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }
        
        .region-tag i {
            font-size: 0.85rem;
        }
        
        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: var(--color-cta);
            color: white;
            font-weight: 600;
            font-size: 1rem;
            border-radius: 40px;
            transition: all 0.2s ease;
            cursor: pointer;
        }
        
        .btn-primary:hover {
            background: var(--color-cta-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-float);
        }
        
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: var(--color-surface);
            color: var(--color-accent);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--color-accent);
            border-radius: 40px;
            transition: all 0.2s ease;
            cursor: pointer;
        }
        
        .btn-secondary:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }
        
        main {
            padding: 80px 0;
        }
        
        .section {
            margin-bottom: 100px;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        
        .section-header h2 {
            font-size: clamp(1.35rem, 3vw, 2rem);
            font-weight: 600;
            line-height: 1.35;
            color: var(--color-text-body);
            margin-bottom: 16px;
        }
        
        .section-header p {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            max-width: 640px;
            margin: 0 auto;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 32px;
        }
        
        .feature-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 32px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }
        
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-float);
            border-color: var(--color-accent);
        }
        
        .feature-icon {
            width: 56px;
            height: 56px;
            background: var(--color-accent-light);
            color: var(--color-accent);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
        }
        
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-text-body);
            margin-bottom: 12px;
        }
        
        .feature-card p {
            font-size: 0.95rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }
        
        .content-showcase {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            box-shadow: var(--shadow-card);
        }
        
        .showcase-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 40px;
            margin-top: 48px;
        }
        
        .showcase-item {
            text-align: center;
        }
        
        .showcase-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: 8px;
        }
        
        .showcase-label {
            font-size: 1rem;
            color: var(--color-text-body);
            font-weight: 500;
            margin-bottom: 6px;
        }
        
        .showcase-desc {
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }
        
        .benefits-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }
        
        .benefit-item {
            display: flex;
            gap: 16px;
            padding: 24px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            transition: all 0.2s ease;
        }
        
        .benefit-item:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card);
        }
        
        .benefit-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            background: var(--color-accent-light);
            color: var(--color-accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        
        .benefit-content h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-body);
            margin-bottom: 6px;
        }
        
        .benefit-content p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }
        
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 32px;
            margin-top: 48px;
        }
        
        .step-card {
            position: relative;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            transition: all 0.3s ease;
        }
        
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-float);
        }
        
        .step-number {
            position: absolute;
            top: -16px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            background: var(--color-accent);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.95rem;
        }
        
        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text-body);
            margin-bottom: 12px;
            margin-top: 8px;
        }
        
        .step-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }
        
        .faq-section {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px;
            margin-bottom: 16px;
            transition: all 0.2s ease;
        }
        
        .faq-item:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card);
        }
        
        .faq-question {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text-body);
            margin-bottom: 12px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }
        
        .faq-question i {
            color: var(--color-accent);
            margin-top: 4px;
            flex-shrink: 0;
        }
        
        .faq-answer {
            font-size: 0.95rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            padding-left: 28px;
        }
        
        .cta-banner {
            background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            color: white;
            box-shadow: var(--shadow-float);
        }
        
        .cta-banner h2 {
            font-size: clamp(1.5rem, 4vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 16px;
        }
        
        .cta-banner p {
            font-size: 1.1rem;
            opacity: 0.95;
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        
        .cta-banner .btn-primary {
            background: white;
            color: var(--color-accent);
        }
        
        .cta-banner .btn-primary:hover {
            background: var(--color-bg);
            transform: translateY(-2px);
        }
        
        .trust-bar {
            background: var(--color-accent-light);
            padding: 20px 0;
            margin-top: 80px;
        }
        
        .trust-bar .container {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 48px;
            flex-wrap: wrap;
        }
        
        .trust-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.95rem;
            color: var(--color-text-body);
            font-weight: 500;
        }
        
        .trust-item i {
            color: var(--color-accent);
            font-size: 1.2rem;
        }
        
        footer {
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            padding: 64px 0 32px;
            margin-top: 120px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        
        .footer-brand h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: 16px;
        }
        
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 24px;
        }
        
        .footer-social {
            display: flex;
            gap: 12px;
        }
        
        .social-icon {
            width: 40px;
            height: 40px;
            background: var(--color-accent-light);
            color: var(--color-accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: all 0.2s ease;
        }
        
        .social-icon:hover {
            background: var(--color-accent);
            color: white;
            transform: translateY(-2px);
        }
        
        .footer-section h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-body);
            margin-bottom: 20px;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            transition: color 0.2s ease;
        }
        
        .footer-links a:hover {
            color: var(--color-accent);
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 32px;
            border-top: 1px solid var(--color-border);
        }
        
        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }
        
        .floating-cta {
            position: fixed;
            bottom: 24px;
            right: 24px;
            z-index: 90;
            display: none;
        }
        
        .floating-cta.visible {
            display: block;
            animation: slideUp 0.3s ease;
        }
        
        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .floating-cta .btn-primary {
            box-shadow: var(--shadow-float);
        }
        
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        
        @media (max-width: 768px) {
            header .container {
                height: 64px;
            }
            
            nav {
                gap: 24px;
            }
            
            .nav-links {
                gap: 20px;
            }
            
            .nav-links a {
                font-size: 0.9rem;
            }
            
            .nav-cta {
                padding: 8px 18px;
                font-size: 0.85rem;
            }
            
            .hero-category {
                padding: 60px 0 40px;
            }
            
            .region-tags {
                gap: 8px;
            }
            
            .region-tag {
                padding: 6px 14px;
                font-size: 0.85rem;
            }
            
            .hero-cta-group {
                flex-direction: column;
            }
            
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            
            main {
                padding: 60px 0;
            }
            
            .section {
                margin-bottom: 80px;
            }
            
            .section-header {
                margin-bottom: 40px;
            }
            
            .content-showcase {
                padding: 48px 24px;
            }
            
            .showcase-grid {
                gap: 32px;
            }
            
            .showcase-number {
                font-size: 2rem;
            }
            
            .cta-banner {
                padding: 48px 24px;
            }
            
            .trust-bar .container {
                gap: 24px;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            
            footer {
                padding: 48px 0 24px;
                margin-top: 80px;
            }
            
            .floating-cta {
                bottom: 16px;
                right: 16px;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            
            .nav-links {
                display: none;
            }
            
            nav {
                gap: 0;
            }
            
            .features-grid,
            .benefits-list,
            .process-steps {
                grid-template-columns: 1fr;
            }
            
            .showcase-grid {
                grid-template-columns: 1fr;
            }
        }