/* Baseline Reset & Theme Colors (桃红艳丽风) */
        :root {
            --primary: #e6005c;
            --primary-hover: #c4004f;
            --primary-light: #fff0f5;
            --accent: #ff2a75;
            --gradient-primary: linear-gradient(135deg, #ff0055 0%, #d8004c 100%);
            --gradient-accent: linear-gradient(135deg, #ff4d8d 0%, #ff0055 100%);
            --gradient-bg: linear-gradient(180deg, #fff5f8 0%, #ffffff 100%);
            --text-dark: #111827;
            --text-main: #1f2937;
            --text-muted: #4b5563;
            --text-subtle: #6b7280;
            --bg-body: #ffffff;
            --bg-alt: #fdf5f8;
            --bg-card: #ffffff;
            --border-color: #f7d6e0;
            --border-hover: #ff99be;
            --shadow-sm: 0 4px 12px rgba(230, 0, 92, 0.05);
            --shadow-md: 0 8px 24px rgba(230, 0, 92, 0.08);
            --shadow-lg: 0 16px 36px rgba(230, 0, 92, 0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
        }

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

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

        body {
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: all 0.3s ease;
        }

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Utility Components */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
            text-align: center;
        }

        .btn-primary {
            background: var(--gradient-primary);
            color: #ffffff !important;
            box-shadow: 0 6px 20px rgba(230, 0, 92, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(230, 0, 92, 0.4);
            color: #ffffff !important;
        }

        .btn-outline {
            background: transparent;
            color: var(--primary) !important;
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }

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

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            border-radius: 20px;
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            border: 1px solid var(--border-color);
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto;
        }

        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }

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

        /* Header Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }

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

        .ai-page-logo {
            max-height: 44px;
            width: auto;
        }

        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            padding: 8px 0;
            position: relative;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-dark);
            cursor: pointer;
        }

        /* Hero Section (strictly NO IMAGES) */
        .hero-section {
            background: var(--gradient-bg);
            padding: 100px 0 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, rgba(255, 42, 117, 0.12) 0%, rgba(255, 255, 255, 0) 70%);
            z-index: 0;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 30px;
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: 40px;
            font-weight: 900;
            color: var(--text-dark);
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 36px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        /* Stats Bar Component */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.9);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
        }

        .stat-number {
            font-size: 32px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* Section Global Padding */
        .page-section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .bg-alt {
            background-color: var(--bg-alt);
        }

        /* Platform Models Grid */
        .models-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
            gap: 14px;
        }

        .model-pill {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 12px;
            text-align: center;
            font-weight: 700;
            color: var(--text-dark);
            font-size: 14px;
            transition: all 0.2s ease;
            box-shadow: 0 2px 6px rgba(0,0,0,0.02);
        }

        .model-pill:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        /* Grid Layouts */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

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

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

        /* Services & Production Cards */
        .service-icon {
            width: 54px;
            height: 54px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: bold;
            margin-bottom: 20px;
        }

        .service-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .service-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Process Steps */
        .step-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            position: relative;
        }

        .step-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: var(--radius-md);
            position: relative;
        }

        .step-num {
            display: inline-block;
            width: 36px;
            height: 36px;
            background: var(--gradient-primary);
            color: #ffffff;
            border-radius: 50%;
            text-align: center;
            line-height: 36px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        /* Comparison Table */
        .comparison-box {
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .rating-banner {
            background: var(--gradient-primary);
            color: #ffffff;
            padding: 24px;
            text-align: center;
        }

        .rating-score {
            font-size: 48px;
            font-weight: 900;
            line-height: 1;
            margin-bottom: 8px;
        }

        .rating-stars {
            font-size: 22px;
            color: #ffd700;
            margin-bottom: 8px;
        }

        .table-responsive {
            overflow-x: auto;
        }

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

        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            font-size: 15px;
        }

        .compare-table th {
            background: var(--bg-alt);
            font-weight: 700;
            color: var(--text-dark);
        }

        .compare-table tr:hover {
            background: var(--primary-light);
        }

        .highlight-col {
            background: #fff8fa;
            font-weight: 700;
            color: var(--primary);
        }

        /* Media / Gallery Section */
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .gallery-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            background: #ffffff;
        }

        .ai-page-image {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
        }

        .gallery-info {
            padding: 16px;
        }

        /* FAQ Accordion */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-question {
            padding: 20px 24px;
            font-size: 17px;
            font-weight: 700;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-question::after {
            content: '+';
            font-size: 24px;
            color: var(--primary);
            transition: transform 0.3s ease;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            background: var(--bg-alt);
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 20px 24px;
            border-top: 1px solid var(--border-color);
        }

        /* Reviews Section */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .review-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 14px;
        }

        .avatar-placeholder {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--gradient-primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
        }

        .author-info h4 {
            font-size: 16px;
            color: var(--text-dark);
            font-weight: 700;
        }

        .author-info p {
            font-size: 13px;
            color: var(--text-subtle);
        }

        /* Form Styling */
        .form-wrapper {
            max-width: 700px;
            margin: 0 auto;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-md);
        }

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

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 15px;
            color: var(--text-main);
            outline: none;
            transition: border 0.3s ease;
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(230, 0, 92, 0.1);
        }

        .form-textarea {
            resize: vertical;
            min-height: 120px;
        }

        /* Contact & QR Footer */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .qr-box {
            text-align: center;
            background: #ffffff;
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            max-width: 260px;
            margin: 0 auto;
        }

        .qr-box img {
            width: 180px;
            height: 180px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 12px;
        }

        /* Footer Section */
        .site-footer {
            background: #111827;
            color: #d1d5db;
            padding: 60px 0 30px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-title {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #9ca3af;
        }

        .footer-links a:hover {
            color: #ffffff;
        }

        .friendship-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid #1f2937;
            margin-top: 30px;
        }

        .friendship-links a {
            color: #9ca3af;
            font-size: 13px;
        }

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

        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #1f2937;
            color: #6b7280;
            font-size: 13px;
        }

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

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--gradient-primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            box-shadow: var(--shadow-lg);
            cursor: pointer;
            border: none;
            transition: transform 0.3s ease;
        }

        .float-btn:hover {
            transform: scale(1.1);
        }

        /* Responsive Design */
        @media (max-width: 992px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 76px;
                left: 0;
                width: 100%;
                background: #ffffff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
            }

            .nav-menu.active {
                display: flex;
            }

            .mobile-toggle {
                display: block;
            }

            .grid-2, .grid-3, .grid-4, .contact-grid, .footer-grid {
                grid-template-columns: 1fr;
            }

            .hero-title {
                font-size: 28px;
            }
        }