:root {
            --primary: #4f46e5;
            --primary-light: #818cf8;
            --secondary: #06b6d4;
            --accent: #f43f5e;
            --dark: #0f172a;
            --light: #f8fafc;
            --gray-100: #f1f5f9;
            --gray-200: #e2e8f0;
            --gray-300: #cbd5e1;
            --gray-600: #475569;
            --gray-800: #1e293b;
            --gradient-primary: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
            --gradient-warm: linear-gradient(135deg, #f43f5e 0%, #fb923c 100%);
            --gradient-bg: linear-gradient(180deg, #f8fafc 0%, #eff6ff 100%);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 20px 40px -15px rgba(15, 23, 42, 0.15);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            color: var(--gray-800);
            background-color: var(--light);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
            background: var(--gradient-bg);
        }

        /* Container Standard */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Typography */
        h1, h2, h3, h4 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--dark);
        }

        .section-title {
            text-align: center;
            font-size: 2.25rem;
            margin-bottom: 1rem;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-subtitle {
            text-align: center;
            color: var(--gray-600);
            max-width: 600px;
            margin: 0 auto 3rem auto;
            font-size: 1.1rem;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.85rem 2rem;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 9999px;
            transition: var(--transition);
            cursor: pointer;
            text-decoration: none;
            border: none;
            gap: 8px;
        }

        .btn-primary {
            background: var(--gradient-primary);
            color: white;
            box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
        }

        .btn-warm {
            background: var(--gradient-warm);
            color: white;
            box-shadow: 0 4px 14px rgba(244, 63, 94, 0.35);
        }

        .btn-warm:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(244, 63, 94, 0.45);
        }

        .btn-secondary {
            background: white;
            color: var(--primary);
            border: 2px solid var(--primary-light);
        }

        .btn-secondary:hover {
            background: var(--gray-100);
            transform: translateY(-2px);
        }

        /* Header & Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--gray-200);
            z-index: 1000;
            transition: var(--transition);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

        .logo-area {
            display: flex;
            align-items: center;
        }

        .ai-page-logo {
            max-height: 48px;
            object-fit: contain;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.5rem;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--gray-800);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
        }

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

        .ai-page-home-link {
            color: var(--primary) !important;
            font-weight: 700 !important;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 3px;
            transition: var(--transition);
        }

        /* Hero Section */
        .hero {
            padding: 160px 0 100px 0;
            background: linear-gradient(135deg, #eef2ff 0%, #e0f2fe 100%);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(6,182,212,0.15) 0%, rgba(255,255,255,0) 70%);
            border-radius: 50%;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(79,70,229,0.12) 0%, rgba(255,255,255,0) 70%);
            border-radius: 50%;
        }

        .hero-container {
            display: flex;
            align-items: center;
            gap: 4rem;
            position: relative;
            z-index: 10;
        }

        .hero-content {
            flex: 1;
        }

        .hero-badge {
            display: inline-block;
            padding: 0.5rem 1.25rem;
            background: rgba(79, 70, 229, 0.08);
            color: var(--primary);
            border-radius: 9999px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(79, 70, 229, 0.15);
        }

        .hero-title {
            font-size: 2.75rem;
            margin-bottom: 1.5rem;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--gray-600);
            margin-bottom: 2.5rem;
        }

        .hero-btns {
            display: flex;
            gap: 1.25rem;
            flex-wrap: wrap;
        }

        .hero-visual {
            flex: 1;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        .hero-stat-card {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(10px);
            padding: 2rem;
            border-radius: 20px;
            box-shadow: var(--shadow);
            border: 1px solid white;
            text-align: center;
            transition: var(--transition);
        }

        .hero-stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .hero-stat-card h3 {
            font-size: 2.25rem;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }

        .hero-stat-card p {
            color: var(--gray-600);
            font-size: 0.95rem;
        }

        .hero-stat-card.full-width {
            grid-column: span 2;
            background: var(--gradient-primary);
            color: white;
        }

        .hero-stat-card.full-width h3,
        .hero-stat-card.full-width p {
            color: white;
        }

        /* Generic Section */
        .section {
            padding: 80px 0;
            border-bottom: 1px solid var(--gray-200);
        }

        /* About & Platform Info */
        .about-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 4rem;
            align-items: center;
        }

        .intro-text p {
            margin-bottom: 1.5rem;
            color: var(--gray-600);
            font-size: 1.1rem;
        }

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

        .feature-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 500;
        }

        .feature-item svg {
            color: var(--secondary);
            flex-shrink: 0;
        }

        .about-sidebar {
            background: white;
            padding: 2.5rem;
            border-radius: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-100);
        }

        .about-sidebar h3 {
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
            border-left: 4px solid var(--primary);
            padding-left: 12px;
        }

        .sidebar-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .sidebar-links li a {
            color: var(--gray-600);
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            justify-content: space-between;
        }

        .sidebar-links li a:hover {
            color: var(--primary);
        }

        /* Models Grid (全平台AIGC服务) */
        .models-container {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }

        .model-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .model-tag {
            background: white;
            border: 1px solid var(--gray-200);
            padding: 8px 16px;
            border-radius: 9999px;
            font-weight: 500;
            font-size: 0.9rem;
            transition: var(--transition);
            cursor: default;
        }

        .model-tag:hover {
            background: var(--gradient-primary);
            color: white;
            border-color: transparent;
            transform: translateY(-2px);
        }

        /* Production (一站式AIGC制作) */
        .production-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

        .prod-card {
            background: white;
            padding: 2.5rem 2rem;
            border-radius: 20px;
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-100);
            transition: var(--transition);
            text-align: center;
        }

        .prod-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .prod-card .icon-wrapper {
            width: 70px;
            height: 70px;
            background: rgba(6, 182, 212, 0.1);
            color: var(--secondary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem auto;
            transition: var(--transition);
        }

        .prod-card:hover .icon-wrapper {
            background: var(--secondary);
            color: white;
        }

        .prod-card h3 {
            margin-bottom: 1rem;
            font-size: 1.35rem;
        }

        .prod-card p {
            color: var(--gray-600);
            font-size: 0.95rem;
        }

        /* Solutions (全行业解决方案) */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }

        .solution-card {
            background: linear-gradient(to bottom right, white, var(--light));
            border-radius: 20px;
            padding: 2rem;
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-100);
            transition: var(--transition);
        }

        .solution-card:hover {
            transform: scale(1.02);
            border-color: var(--primary-light);
        }

        .solution-title {
            font-size: 1.25rem;
            margin-bottom: 1rem;
            color: var(--primary);
        }

        /* Network & Process & Standards */
        .network-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .network-info {
            background: white;
            padding: 2.5rem;
            border-radius: 24px;
            box-shadow: var(--shadow);
        }

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

        .net-item {
            padding: 1rem;
            background: var(--light);
            border-radius: 10px;
            border-left: 4px solid var(--secondary);
        }

        .timeline {
            position: relative;
            padding-left: 30px;
            border-left: 2px solid var(--primary-light);
            margin-left: 10px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 2.5rem;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -39px;
            top: 5px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary);
            border: 4px solid white;
            box-shadow: 0 0 0 4px var(--primary-light);
        }

        .timeline-item h4 {
            margin-bottom: 0.5rem;
        }

        .standards-table-wrapper {
            overflow-x: auto;
            border-radius: 16px;
            box-shadow: var(--shadow);
            background: white;
            border: 1px solid var(--gray-200);
        }

        .standards-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }

        .standards-table th, .standards-table td {
            padding: 1.25rem 1.5rem;
        }

        .standards-table th {
            background-color: var(--gray-100);
            font-weight: 600;
            color: var(--dark);
        }

        .standards-table tr:not(:last-child) {
            border-bottom: 1px solid var(--gray-200);
        }

        /* Cases (客户案例中心) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2.5rem;
        }

        .case-card {
            background: white;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .case-img-container {
            width: 100%;
            height: 260px;
            background: var(--gray-100);
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .case-body {
            padding: 2rem;
        }

        .case-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(6, 182, 212, 0.1);
            color: var(--secondary);
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        /* Comparison (对比评测) */
        .comparison-layout {
            display: grid;
            grid-template-columns: 0.8fr 1.2fr;
            gap: 3rem;
            align-items: center;
        }

        .rating-box {
            background: var(--gradient-primary);
            color: white;
            padding: 3rem 2rem;
            border-radius: 24px;
            text-align: center;
            box-shadow: var(--shadow-lg);
        }

        .rating-num {
            font-size: 5rem;
            font-weight: 800;
            line-height: 1;
            margin-bottom: 0.5rem;
        }

        .rating-stars {
            font-size: 1.5rem;
            color: #fbbf24;
            margin-bottom: 1rem;
        }

        /* Matcher (智能需求匹配) */
        .matcher-wrapper {
            background: white;
            border-radius: 30px;
            padding: 3.5rem;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--gray-200);
        }

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

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-group.full-width {
            grid-column: span 2;
        }

        .form-group label {
            font-weight: 600;
            color: var(--dark);
        }

        .form-control {
            padding: 1rem;
            border: 1px solid var(--gray-300);
            border-radius: 10px;
            font-size: 1rem;
            transition: var(--transition);
            background-color: var(--light);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: white;
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
        }

        /* Token比价 */
        .token-price-wrapper {
            margin-top: 1rem;
        }

        .price-badge {
            background: rgba(244, 63, 94, 0.1);
            color: var(--accent);
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        /* Training & AI Training */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
        }

        .training-card {
            background: white;
            padding: 2rem;
            border-radius: 18px;
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-200);
            transition: var(--transition);
            border-top: 5px solid var(--primary);
        }

        .training-card:hover {
            transform: translateY(-5px);
            border-top-color: var(--secondary);
        }

        .training-card h3 {
            font-size: 1.2rem;
            margin-bottom: 1rem;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .faq-item {
            background: white;
            border-radius: 12px;
            border: 1px solid var(--gray-200);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            width: 100%;
            padding: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            text-align: left;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            gap: 1rem;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            transition: var(--transition);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }

        .faq-body-content {
            padding: 0 1.5rem 1.5rem 1.5rem;
            color: var(--gray-600);
            border-top: 1px solid var(--gray-100);
            padding-top: 1.5rem;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        /* Troubleshooting & Glossary */
        .trouble-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
        }

        .trouble-card {
            background: #fff8f8;
            border-left: 4px solid var(--accent);
            padding: 2rem;
            border-radius: 12px;
        }

        .trouble-card h3 {
            color: var(--accent);
            margin-bottom: 1rem;
        }

        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 1rem;
        }

        .glossary-card {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            border: 1px solid var(--gray-200);
        }

        .glossary-card h4 {
            color: var(--primary);
            margin-bottom: 0.5rem;
        }

        /* Comments (6 用户评论) */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .comment-card {
            background: white;
            padding: 2rem;
            border-radius: 20px;
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-100);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .comment-text {
            font-style: italic;
            color: var(--gray-600);
            margin-bottom: 1.5rem;
        }

        .commenter-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .commenter-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--gradient-primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        /* News & Knowledge base */
        .articles-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .article-card {
            background: white;
            border-radius: 16px;
            padding: 2rem;
            box-shadow: var(--shadow);
            border: 1px solid var(--gray-200);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
        }

        .article-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary-light);
        }

        .article-card h3 {
            font-size: 1.2rem;
            margin-bottom: 1rem;
        }

        .article-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 1rem;
        }

        /* Agent Program */
        .agent-box {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            color: white;
            padding: 4rem;
            border-radius: 30px;
            box-shadow: var(--shadow-lg);
            text-align: center;
        }

        .agent-box h2 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 2.25rem;
        }

        .agent-box p {
            color: var(--gray-300);
            max-width: 700px;
            margin: 0 auto 2.5rem auto;
            font-size: 1.1rem;
        }

        /* Contact Section */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }

        .info-card {
            display: flex;
            align-items: flex-start;
            gap: 1.5rem;
        }

        .info-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .qr-area {
            background: white;
            padding: 2.5rem;
            border-radius: 24px;
            box-shadow: var(--shadow);
            text-align: center;
            border: 1px solid var(--gray-200);
        }

        .qr-area img {
            max-width: 180px;
            margin-bottom: 1.5rem;
            border-radius: 8px;
        }

        /* Footer & Links */
        .footer {
            background-color: var(--dark);
            color: var(--gray-300);
            padding: 80px 0 40px 0;
            border-top: 4px solid var(--primary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.5fr;
            gap: 4rem;
            margin-bottom: 4rem;
        }

        .footer-col h4 {
            color: white;
            font-size: 1.1rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 30px;
            height: 2px;
            background: var(--secondary);
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .friend-links a {
            color: var(--gray-300);
            text-decoration: none;
            font-size: 0.9rem;
            background: rgba(255, 255, 255, 0.05);
            padding: 6px 12px;
            border-radius: 4px;
            transition: var(--transition);
        }

        .friend-links a:hover {
            background: var(--primary);
            color: white;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1.5rem;
            font-size: 0.9rem;
        }

        /* Back to top & Floating QR */
        .floating-action-buttons {
            position: fixed;
            bottom: 40px;
            right: 40px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: white;
            color: var(--dark);
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid var(--gray-200);
            position: relative;
        }

        .float-btn:hover {
            background: var(--gradient-primary);
            color: white;
            transform: scale(1.05);
        }

        .float-qr-popup {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: white;
            padding: 15px;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--gray-200);
            display: none;
            text-align: center;
            width: 160px;
        }

        .float-qr-popup img {
            width: 130px;
            height: 130px;
            margin-bottom: 8px;
        }

        .float-qr-popup p {
            color: var(--dark);
            font-size: 0.8rem;
            margin: 0;
        }

        .float-btn:hover .float-qr-popup {
            display: block;
        }

        /* Responsive Styles */
        @media (max-width: 1024px) {
            .hero-container {
                flex-direction: column;
                gap: 3rem;
            }
            .hero-content {
                text-align: center;
            }
            .hero-btns {
                justify-content: center;
            }
            .about-grid, .network-layout, .comparison-layout, .contact-layout {
                grid-template-columns: 1fr;
                gap: 3rem;
            }
            .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.75rem;
            }
            .menu-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 80px;
                left: 0;
                width: 100%;
                background: white;
                flex-direction: column;
                padding: 2rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
                border-bottom: 1px solid var(--gray-200);
                gap: 1.25rem;
            }
            .nav-links.active {
                display: flex;
            }
            .hero-visual {
                width: 100%;
            }
            .form-grid, .trouble-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full-width {
                grid-column: span 1;
            }
            .comments-grid {
                grid-template-columns: 1fr;
            }
            .floating-action-buttons {
                bottom: 20px;
                right: 20px;
            }
        }