/* CSS Reset & Variables */
        :root {
            --primary-gradient: linear-gradient(135deg, #FF3366, #FF9933);
            --secondary-gradient: linear-gradient(135deg, #00C6FF, #0072FF);
            --accent-gradient: linear-gradient(135deg, #7F00FF, #FF007F);
            --bg-light: #F8FAFC;
            --bg-card: #FFFFFF;
            --text-main: #0F172A;
            --text-muted: #475569;
            --border-color: #E2E8F0;
            --border-hover: #CBD5E1;
            --shadow-sm: 0 4px 6px -1px rgba(0,0,0,0.05);
            --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.08);
            --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.1);
            --max-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-light);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* Layout Container */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Typography */
        h1, h2, h3, h4 {
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.25;
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2.5rem;
            margin-bottom: 16px;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-header p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: white;
            box-shadow: 0 4px 15px rgba(255, 51, 102, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 51, 102, 0.4);
        }

        .btn-secondary {
            background: var(--secondary-gradient);
            color: white;
            box-shadow: 0 4px 15px rgba(0, 198, 255, 0.3);
        }

        .btn-secondary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 198, 255, 0.4);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--text-main);
            color: var(--text-main);
        }

        .btn-outline:hover {
            background: var(--text-main);
            color: white;
        }

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

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

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

        .ai-page-logo {
            height: 40px;
            width: auto;
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .nav-link {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
        }

        .nav-link:hover {
            color: #FF3366;
        }

        .nav-btn {
            padding: 8px 20px;
            font-size: 0.9rem;
        }

        /* Mobile Menu Toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
            z-index: 1100;
        }

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

        /* Hero Section (No Image Restriction) */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 10% 20%, rgba(255, 51, 102, 0.05) 0%, rgba(0, 198, 255, 0.05) 90%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            left: 50%;
            width: 600px;
            height: 600px;
            background: linear-gradient(135deg, rgba(255, 51, 102, 0.1), rgba(0, 198, 255, 0.1));
            filter: blur(150px);
            border-radius: 50%;
            transform: translateX(-50%);
            z-index: 1;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #FF3366, #FF9933, #7F00FF, #00C6FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 60px;
        }

        /* Stats Cards */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 16px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: #00C6FF;
        }

        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* Section Styling */
        section {
            padding: 100px 0;
            border-bottom: 1px solid var(--border-color);
        }

        /* About Section */
        .about-wrap {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 2rem;
            margin-bottom: 20px;
            color: var(--text-main);
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 24px;
            font-size: 1.05rem;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .about-feature-item {
            background: var(--bg-card);
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .about-feature-item h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: #FF3366;
        }

        .about-feature-item p {
            font-size: 0.9rem;
            margin: 0;
        }

        /* Platform Grid */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
            gap: 15px;
            margin-top: 40px;
        }

        .platform-tag {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 12px;
            border-radius: 30px;
            text-align: center;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-main);
            transition: var(--transition);
        }

        .platform-tag:hover {
            background: var(--secondary-gradient);
            color: white;
            border-color: transparent;
            transform: scale(1.05);
        }

        /* Services Grid */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 40px 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--primary-gradient);
            opacity: 0;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 24px;
        }

        .service-card h3 {
            font-size: 1.4rem;
            margin-bottom: 16px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* Timeline Flow (Standard AIGC Flow) */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding: 40px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-color);
            transform: translateX(-50%);
        }

        .timeline-item {
            display: flex;
            justify-content: flex-end;
            padding-right: 50%;
            position: relative;
            margin-bottom: 40px;
        }

        .timeline-item:nth-child(even) {
            justify-content: flex-start;
            padding-right: 0;
            padding-left: 50%;
        }

        .timeline-badge {
            position: absolute;
            left: 50%;
            top: 20px;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary-gradient);
            border: 4px solid var(--bg-light);
            transform: translateX(-50%);
            z-index: 10;
        }

        .timeline-content {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 16px;
            width: 90%;
            box-shadow: var(--shadow-sm);
        }

        .timeline-item:nth-child(even) .timeline-content {
            margin-left: auto;
        }

        .timeline-content h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: #FF3366;
        }

        /* Case Showcase */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background: var(--bg-card);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

        .case-img-wrap {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #eee;
        }

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

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

        .case-info {
            padding: 24px;
        }

        .case-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(255, 51, 102, 0.1);
            color: #FF3366;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        .case-info h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

        .case-info p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin: 0;
        }

        /* Evaluation Block & Pricing */
        .eval-grid {
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 40px;
            align-items: center;
        }

        .eval-score-card {
            background: var(--primary-gradient);
            color: white;
            padding: 50px;
            border-radius: 24px;
            text-align: center;
            box-shadow: var(--shadow-lg);
        }

        .eval-score-card h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
        }

        .eval-score-num {
            font-size: 5rem;
            font-weight: 950;
            line-height: 1;
            margin-bottom: 10px;
        }

        .eval-stars {
            font-size: 1.5rem;
            color: #FFD700;
            margin-bottom: 20px;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            background: var(--bg-card);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

        .compare-table th, .compare-table td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.95rem;
        }

        .compare-table th {
            background: #F1F5F9;
            font-weight: 750;
        }

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

        .badge-success {
            color: #10B981;
            font-weight: 700;
        }

        /* Form section */
        .form-section {
            background: #FFF;
        }

        .form-wrap {
            max-width: 800px;
            margin: 0 auto;
            background: var(--bg-light);
            padding: 50px;
            border-radius: 24px;
            border: 1px solid var(--border-color);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 24px;
        }

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

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

        .form-group label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-main);
        }

        .form-group input, .form-group select, .form-group textarea {
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            outline: none;
            transition: var(--transition);
            font-family: inherit;
        }

        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            border-color: #FF3366;
            box-shadow: 0 0 0 3px rgba(255, 51, 102, 0.1);
        }

        /* Review Grid */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            box-shadow: var(--shadow-sm);
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 20px;
        }

        .review-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--secondary-gradient);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .review-user-info h4 {
            font-size: 1rem;
            margin-bottom: 2px;
        }

        .review-user-info span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .review-content {
            font-size: 0.95rem;
            color: var(--text-muted);
        }

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin-bottom: 15px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            background: var(--bg-card);
        }

        .faq-header h3 {
            font-size: 1.05rem;
            margin: 0;
            font-weight: 700;
        }

        .faq-icon {
            font-size: 1.2rem;
            transition: var(--transition);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            background: #FAF8F6;
        }

        .faq-content {
            padding: 20px 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            border-top: 1px solid var(--border-color);
        }

        .faq-item.active .faq-body {
            max-height: 1000px;
            transition: max-height 0.5s ease-in-out;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        /* Articles & Terminology */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            transition: var(--transition);
        }

        .article-card:hover {
            transform: translateY(-5px);
            border-color: #FF3366;
        }

        .article-meta {
            font-size: 0.8rem;
            color: #FF3366;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .article-card h3 {
            font-size: 1.15rem;
            margin-bottom: 12px;
        }

        .article-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .article-link {
            color: var(--text-main);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .article-link:hover {
            color: #FF3366;
        }

        /* Footer & Links */
        .footer {
            background: #0F172A;
            color: #94A3B8;
            padding: 80px 0 30px;
            border-top: none;
        }

        .footer h3, .footer h4 {
            color: white;
            margin-bottom: 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr) 1.2fr;
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-info p {
            margin-bottom: 16px;
            font-size: 0.95rem;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: #94A3B8;
            text-decoration: none;
            transition: var(--transition);
            font-size: 0.95rem;
        }

        .footer-links a:hover {
            color: white;
        }

        .footer-qr {
            text-align: center;
        }

        .footer-qr img {
            width: 120px;
            height: 120px;
            border-radius: 8px;
            margin-bottom: 10px;
            background: white;
            padding: 5px;
        }

        .footer-qr p {
            font-size: 0.85rem;
            color: #94A3B8;
        }

        .friend-links-box {
            padding: 24px 0;
            border-top: 1px solid #1E293B;
            border-bottom: 1px solid #1E293B;
            margin-bottom: 30px;
        }

        .friend-links-box span {
            color: white;
            font-weight: 600;
            margin-right: 15px;
            display: inline-block;
        }

        .friend-links-box a {
            color: #64748B;
            text-decoration: none;
            margin-right: 15px;
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-block;
        }

        .friend-links-box a:hover {
            color: #FF3366;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
        }

        .ai-page-home-link {
            color: #94A3B8;
            text-decoration: none;
            transition: var(--transition);
        }

        .ai-page-home-link:hover {
            color: white;
        }

        /* Floating Widgets */
        .floating-widgets {
            position: fixed;
            bottom: 40px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .widget-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: white;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            position: relative;
        }

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

        .widget-qr-pop {
            position: absolute;
            bottom: 60px;
            right: 0;
            width: 150px;
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 12px;
            box-shadow: var(--shadow-lg);
            display: none;
            text-align: center;
        }

        .widget-qr-pop img {
            width: 100%;
            height: auto;
            border-radius: 4px;
        }

        .widget-btn:hover .widget-qr-pop {
            display: block;
        }

        /* Responsive Design */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-wrap {
                grid-template-columns: 1fr;
            }
            .services-grid, .case-grid, .article-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .eval-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: white;
                flex-direction: column;
                padding: 30px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                display: none;
            }
            .nav.active {
                display: flex;
            }
            .hero h1 {
                font-size: 2.3rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                max-width: 300px;
            }
            .services-grid, .case-grid, .article-grid, .reviews-grid {
                grid-template-columns: 1fr;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                padding-right: 0;
                padding-left: 45px;
                justify-content: flex-start;
            }
            .timeline-item:nth-child(even) {
                padding-left: 45px;
            }
            .timeline-badge {
                left: 20px;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group-full {
                grid-column: span 1;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 15px;
                text-align: center;
            }
        }