/* CSS Reset & Variable Variables (亮紫绚烂风) */
        :root {
            --primary: #8b5cf6;
            --primary-light: #c084fc;
            --primary-dark: #6d28d9;
            --secondary: #ec4899;
            --bg-main: #fcfaff;
            --bg-card: #ffffff;
            --text-main: #1f1a3a;
            --text-muted: #5e5873;
            --border-color: #e9e3f5;
            --shadow-sm: 0 4px 6px -1px rgba(139, 92, 246, 0.05), 0 2px 4px -1px rgba(139, 92, 246, 0.03);
            --shadow-md: 0 10px 15px -3px rgba(139, 92, 246, 0.08), 0 4px 6px -2px rgba(139, 92, 246, 0.04);
            --shadow-lg: 0 20px 25px -5px rgba(139, 92, 246, 0.12), 0 10px 10px -5px rgba(139, 92, 246, 0.06);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --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-main);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        /* Typography */
        h1, h2, h3, h4 {
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
        }

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

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

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(139, 92, 246, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(139, 92, 246, 0.45);
            color: #ffffff;
        }

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

        .btn-secondary:hover {
            background-color: var(--bg-main);
            transform: translateY(-2px);
        }

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

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

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

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

        .brand-name {
            font-size: 22px;
            background: linear-gradient(to right, var(--primary-dark), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-link {
            font-weight: 500;
            color: var(--text-muted);
            font-size: 15px;
        }

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

        /* Mobile Hamburger */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }

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

        .section-bg-alt {
            background-color: #f7f4fc;
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-title {
            font-size: 32px;
            margin-bottom: 16px;
            background: linear-gradient(135deg, var(--text-main) 30%, var(--primary-dark) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
        }

        /* Hero Section (No Image) */
        .hero {
            padding: 100px 0 120px 0;
            background: radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%), var(--bg-main);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 40%;
            height: 40%;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
            z-index: 0;
        }

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

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(139, 92, 246, 0.1);
            color: var(--primary-dark);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(139, 92, 246, 0.2);
        }

        .hero-title {
            font-size: 46px;
            margin-bottom: 24px;
            color: var(--text-main);
            line-height: 1.25;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.7;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        /* Stats Cards */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: -60px;
            position: relative;
            z-index: 10;
        }

        .stats-card {
            background-color: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 30px 20px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

        .stats-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

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

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

        .service-card {
            background-color: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 40px 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 24px;
            font-weight: bold;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 16px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .service-tag {
            font-size: 12px;
            background-color: var(--bg-main);
            color: var(--primary-dark);
            padding: 4px 10px;
            border-radius: 4px;
            border: 1px solid var(--border-color);
        }

        /* Tag Cloud Area */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 1000px;
            margin: 40px auto 0 auto;
        }

        .cloud-tag {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            cursor: pointer;
        }

        .cloud-tag:hover {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: #ffffff;
            border-color: transparent;
            transform: scale(1.05);
        }

        /* Step Timeline */
        .timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }

        .timeline-step {
            position: relative;
            background-color: var(--bg-card);
            padding: 30px 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .step-num {
            position: absolute;
            top: -20px;
            left: 24px;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            box-shadow: 0 4px 10px rgba(139, 92, 246, 0.3);
        }

        .timeline-step h3 {
            margin-top: 10px;
            font-size: 18px;
            margin-bottom: 12px;
        }

        .timeline-step p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* Network Section Map */
        .network-box {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .network-details h3 {
            font-size: 24px;
            margin-bottom: 16px;
        }

        .network-list {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 24px;
        }

        .network-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .network-item::before {
            content: "✓";
            color: var(--secondary);
            font-weight: bold;
        }

        .network-visual {
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        /* Comparison Table */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background-color: var(--bg-card);
            text-align: left;
            min-width: 600px;
        }

        .comparison-table th, .comparison-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 15px;
        }

        .comparison-table th {
            background-color: #f5efff;
            color: var(--text-main);
            font-weight: 700;
        }

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

        .comparison-table tr.highlight {
            background-color: rgba(139, 92, 246, 0.03);
        }

        .badge-score {
            display: inline-block;
            background: linear-gradient(135deg, #10b981 0%, #059669 100%);
            color: #ffffff;
            padding: 4px 12px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 14px;
        }

        /* Training Section Cards */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

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

        .training-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }

        .training-tag {
            display: inline-block;
            font-size: 11px;
            background-color: #eef2ff;
            color: #4f46e5;
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .training-card h3 {
            font-size: 18px;
            margin-bottom: 12px;
        }

        .training-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        /* Cases Center (Image Gallery) */
        .case-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 30px;
        }

        .case-left {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .case-item {
            background-color: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .case-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .case-img-wrap {
            width: 100%;
            height: 250px;
            overflow: hidden;
            background-color: #eaeaea;
        }

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

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

        .case-content {
            padding: 24px;
        }

        .case-content h3 {
            font-size: 20px;
            margin-bottom: 8px;
        }

        .case-content p {
            color: var(--text-muted);
            font-size: 14px;
        }

        .case-item-square {
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .case-item-square .case-img-wrap {
            height: 100%;
            min-height: 350px;
        }

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

        .faq-item {
            background-color: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: var(--bg-card);
            border: none;
            outline: none;
            cursor: pointer;
            text-align: left;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            transition: var(--transition);
        }

        .faq-question:hover {
            background-color: var(--bg-main);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: var(--bg-main);
        }

        .faq-answer-inner {
            padding: 20px 24px;
            color: var(--text-muted);
            font-size: 14px;
            border-top: 1px solid var(--border-color);
        }

        .faq-arrow {
            font-size: 18px;
            color: var(--primary);
            transition: var(--transition);
        }

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

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

        .review-card {
            background-color: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 24px;
            position: relative;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .review-avatar-placeholder {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 14px;
        }

        .review-user-info h4 {
            font-size: 14px;
            margin-bottom: 2px;
        }

        .review-user-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

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

        .article-card {
            background-color: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .article-img {
            width: 100%;
            height: 180px;
            background-color: #f3e8ff;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 32px;
        }

        .article-body {
            padding: 24px;
        }

        .article-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 10px;
            display: block;
        }

        .article-body h3 {
            font-size: 18px;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .article-link {
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* Demand Form Section */
        .demand-section-box {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: start;
        }

        .form-wrap {
            background-color: var(--bg-card);
            padding: 40px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
        }

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

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 14px;
            color: var(--text-main);
        }

        .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);
            background-color: var(--bg-main);
            transition: var(--transition);
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            background-color: #ffffff;
            box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
        }

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

        /* Contact Details & QR Code */
        .contact-info-panel {
            background-color: #ffffff;
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .contact-methods {
            margin-bottom: 30px;
        }

        .contact-item-detail {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 20px;
        }

        .contact-icon {
            font-size: 20px;
            color: var(--primary);
            line-height: 1;
        }

        .contact-text h4 {
            font-size: 15px;
            margin-bottom: 4px;
        }

        .contact-text p {
            font-size: 14px;
            color: var(--text-muted);
        }

        .qr-codes-wrap {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .qr-card {
            flex: 1;
            min-width: 150px;
            background-color: var(--bg-main);
            border-radius: var(--radius-md);
            padding: 16px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .qr-card img {
            width: 100%;
            max-width: 120px;
            height: auto;
            border-radius: 8px;
            margin-bottom: 10px;
        }

        .qr-card p {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* Float Customer Service */
        .float-cs {
            position: fixed;
            bottom: 40px;
            right: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .float-btn:hover {
            background-color: var(--primary);
            color: #ffffff;
            transform: scale(1.1);
        }

        .float-qr-pop {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: #ffffff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            padding: 16px;
            border: 1px solid var(--border-color);
            display: none;
            width: 180px;
            text-align: center;
        }

        .float-qr-pop img {
            width: 100%;
            height: auto;
            margin-bottom: 8px;
        }

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

        /* Footer */
        .footer {
            background-color: #121021;
            color: #d1cddb;
            padding: 80px 0 30px 0;
            border-top: 1px solid #231f3c;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-logo-wrap {
            margin-bottom: 20px;
        }

        .footer-brand {
            font-size: 24px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.6;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 16px;
            margin-bottom: 24px;
        }

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

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

        .footer-links a {
            color: #a39eb2;
            font-size: 14px;
        }

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

        /* Friend Links */
        .friend-links {
            border-top: 1px solid #231f3c;
            border-bottom: 1px solid #231f3c;
            padding: 24px 0;
            margin-bottom: 30px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .friend-links span {
            font-weight: 600;
            font-size: 14px;
            color: #ffffff;
        }

        .friend-links a {
            font-size: 14px;
            color: #a39eb2;
            margin-right: 12px;
        }

        .friend-links a:hover {
            color: var(--secondary);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #7b758e;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* Responsive Design */
        @media (max-width: 1024px) {
            .service-grid, .timeline, .training-grid, .reviews-grid, .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                margin-top: 0;
                padding-top: 40px;
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
            .case-item-square .case-img-wrap {
                min-height: 250px;
            }
            .network-box, .demand-section-box {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 80px;
                left: 0;
                width: 100%;
                background-color: #ffffff;
                box-shadow: var(--shadow-md);
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
            }
            
            .nav-menu.active {
                display: flex;
            }

            .menu-toggle {
                display: flex;
            }

            .hero-title {
                font-size: 32px;
            }

            .service-grid, .timeline, .training-grid, .reviews-grid, .article-grid {
                grid-template-columns: 1fr;
            }

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