* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: #faf8ff;
            color: #1a1035;
            line-height: 1.6;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* 炫彩荧光主色调 */
        :root {
            --primary: #7b2cbf;
            --primary-light: #b388eb;
            --accent-cyan: #00e5ff;
            --accent-pink: #ff3cac;
            --accent-lime: #c6ff00;
            --bg-deep: #0e0b1a;
            --text-muted: #4a3f6b;
            --card-bg: rgba(255, 255, 255, 0.75);
            --glass-border: rgba(123, 44, 191, 0.2);
            --shadow-glow: 0 8px 32px rgba(123, 44, 191, 0.15);
            --shadow-hover: 0 16px 48px rgba(123, 44, 191, 0.25);
        }
        h1, h2, h3, h4 {
            font-weight: 700;
            letter-spacing: -0.02em;
        }
        h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            background: linear-gradient(135deg, #2a1445 0%, #7b2cbf 60%, #00b4d8 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 0 30px rgba(123, 44, 191, 0.2);
            margin-bottom: 1.5rem;
        }
        h2 {
            font-size: 2rem;
            margin-bottom: 1rem;
            color: #1a1035;
            position: relative;
            display: inline-block;
        }
        h2::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -6px;
            width: 48px;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-pink), var(--accent-cyan));
            border-radius: 4px;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.1rem;
            margin-bottom: 2rem;
        }
        /* 导航 */
        .navbar {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.82);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(123, 44, 191, 0.12);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 24px;
            max-width: 1280px;
            margin: 0 auto;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .ai-page-logo {
            max-height: 40px;
            width: auto;
        }
        .brand-text {
            font-weight: 800;
            font-size: 1.3rem;
            background: linear-gradient(135deg, #7b2cbf, #ff3cac);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-links {
            display: flex;
            list-style: none;
            align-items: center;
            gap: 0;
            flex-wrap: wrap;
        }
        .nav-links li {
            margin: 0 4px;
        }
        .nav-links a {
            text-decoration: none;
            color: #2e1b4f;
            font-weight: 500;
            font-size: 0.9rem;
            padding: 6px 10px;
            border-radius: 30px;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: rgba(123, 44, 191, 0.08);
            color: #7b2cbf;
            box-shadow: 0 0 0 2px rgba(123, 44, 191, 0.1);
        }
        .nav-cta {
            background: linear-gradient(135deg, #7b2cbf, #ff3cac);
            color: white !important;
            padding: 8px 20px !important;
            border-radius: 30px !important;
            font-weight: 600 !important;
            margin-left: 4px;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(123, 44, 191, 0.35) !important;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #7b2cbf;
            padding: 4px 8px;
        }
        /* Hero 首屏（无图片） */
        .hero {
            padding: 60px 0 80px;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(123, 44, 191, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 0.8fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-content h1 {
            font-size: 3.2rem;
            margin-bottom: 1.2rem;
            background: linear-gradient(135deg, #1a1035 20%, #7b2cbf 60%, #00b4d8 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 1.2rem;
            color: #3d2e5c;
            margin-bottom: 2rem;
            max-width: 540px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(123, 44, 191, 0.1);
            border: 1px solid rgba(123, 44, 191, 0.25);
            border-radius: 30px;
            padding: 6px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #7b2cbf;
            margin-bottom: 1.2rem;
            backdrop-filter: blur(4px);
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 36px;
            background: linear-gradient(135deg, #7b2cbf, #ff3cac);
            color: white;
            font-weight: 700;
            border-radius: 50px;
            text-decoration: none;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 8px 24px rgba(123, 44, 191, 0.3);
            font-size: 1rem;
        }
        .btn-primary:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 16px 40px rgba(123, 44, 191, 0.4);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            background: white;
            color: #7b2cbf;
            border: 1.5px solid #7b2cbf;
            font-weight: 600;
            border-radius: 50px;
            text-decoration: none;
            transition: all 0.3s ease;
            font-size: 1rem;
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: #f1e8ff;
            transform: translateY(-2px);
        }
        /* 首屏数据卡片（CSS构建） */
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            background: rgba(255, 255, 255, 0.6);
            backdrop-filter: blur(12px);
            padding: 24px;
            border-radius: 32px;
            border: 1px solid rgba(255, 255, 255, 0.7);
            box-shadow: 0 12px 40px rgba(123, 44, 191, 0.08);
        }
        .stat-item {
            text-align: left;
        }
        .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, #7b2cbf, #ff3cac);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.85rem;
            color: #5a4a7a;
            font-weight: 500;
        }
        /* 卡片通用 */
        .section {
            padding: 80px 0;
            position: relative;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 28px;
        }
        .card {
            background: rgba(255, 255, 255, 0.75);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.9);
            border-radius: 24px;
            padding: 28px 24px;
            box-shadow: 0 8px 24px rgba(123, 44, 191, 0.06);
            transition: all 0.3s ease;
            border-bottom: 3px solid transparent;
        }
        .card:hover {
            transform: translateY(-6px);
            border-bottom-color: var(--accent-pink);
            box-shadow: 0 20px 48px rgba(123, 44, 191, 0.15);
            background: rgba(255, 255, 255, 0.9);
        }
        .card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: #1a1035;
        }
        .card p {
            color: #4a3f6b;
            font-size: 0.95rem;
        }
        .tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(123, 44, 191, 0.08);
            border-radius: 30px;
            font-size: 0.75rem;
            color: #7b2cbf;
            font-weight: 600;
            margin-right: 6px;
            margin-bottom: 6px;
        }
        /* 表格 */
        .compare-table-wrap {
            overflow-x: auto;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.9);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.02);
            margin-top: 24px;
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 720px;
        }
        .compare-table th,
        .compare-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid rgba(123, 44, 191, 0.1);
        }
        .compare-table th {
            background: rgba(123, 44, 191, 0.06);
            font-weight: 700;
            color: #2a1445;
            font-size: 0.9rem;
        }
        .compare-table td {
            font-size: 0.95rem;
            color: #3d2e5c;
        }
        .highlight-cell {
            background: rgba(123, 44, 191, 0.08);
            font-weight: 600;
            color: #7b2cbf !important;
        }
        /* FAQ 折叠 */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.75);
            border: 1px solid rgba(123, 44, 191, 0.12);
            border-radius: 16px;
            overflow: hidden;
            transition: box-shadow 0.3s;
        }
        .faq-item:hover {
            box-shadow: 0 6px 20px rgba(123, 44, 191, 0.08);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 1rem;
            color: #1a1035;
            transition: background 0.2s;
        }
        .faq-question:hover {
            background: rgba(123, 44, 191, 0.04);
        }
        .faq-icon {
            font-size: 1.4rem;
            color: #7b2cbf;
            transition: transform 0.3s;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s;
            padding: 0 24px;
            color: #4a3f6b;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }
        /* 评论 */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .review-card {
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(8px);
            border-radius: 20px;
            padding: 24px;
            border: 1px solid rgba(255, 255, 255, 0.9);
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.02);
            transition: transform 0.3s;
        }
        .review-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(123, 44, 191, 0.1);
        }
        .review-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }
        .avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, #7b2cbf, #ff3cac);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 1rem;
        }
        .review-name {
            font-weight: 700;
            color: #1a1035;
        }
        .review-role {
            font-size: 0.8rem;
            color: #7b2cbf;
        }
        .review-text {
            color: #3d2e5c;
            font-size: 0.95rem;
            line-height: 1.7;
        }
        /* 表单 */
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 6px;
            color: #2a1445;
        }
        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1.5px solid rgba(123, 44, 191, 0.2);
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.8);
            font-size: 0.95rem;
            color: #1a1035;
            transition: border 0.2s, box-shadow 0.2s;
            font-family: inherit;
        }
        .form-control:focus {
            outline: none;
            border-color: #7b2cbf;
            box-shadow: 0 0 0 3px rgba(123, 44, 191, 0.1);
        }
        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(135deg, #7b2cbf, #ff3cac);
            color: white;
            border: none;
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: 0 8px 24px rgba(123, 44, 191, 0.25);
        }
        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(123, 44, 191, 0.4);
        }
        /* 页脚 */
        footer {
            background: #0e0b1a;
            color: #b9a9d4;
            padding: 48px 0 24px;
            margin-top: 40px;
        }
        footer .container {
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .brand-text {
            color: #d9c9f0;
            font-size: 1.4rem;
            margin-bottom: 8px;
            display: inline-block;
        }
        .footer-desc {
            font-size: 0.9rem;
            color: #9a8ab0;
            margin-top: 12px;
            max-width: 280px;
        }
        .footer-title {
            color: #eee6ff;
            font-weight: 700;
            margin-bottom: 16px;
            font-size: 1rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #b9a9d4;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: #ff3cac;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: #7a6a92;
        }
        .footer-bottom a {
            color: #b9a9d4;
            text-decoration: none;
        }
        /* 浮动客服 */
        .float-kefu {
            position: fixed;
            right: 24px;
            bottom: 32px;
            z-index: 999;
            background: linear-gradient(135deg, #7b2cbf, #ff3cac);
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 28px rgba(123, 44, 191, 0.4);
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            color: white;
            font-size: 1.5rem;
            text-decoration: none;
        }
        .float-kefu:hover {
            transform: scale(1.08);
            box-shadow: 0 12px 36px rgba(123, 44, 191, 0.5);
        }
        .back-top {
            position: fixed;
            left: 24px;
            bottom: 32px;
            z-index: 999;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: white;
            border: 1.5px solid rgba(123, 44, 191, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            color: #7b2cbf;
            font-size: 1.2rem;
            transition: all 0.2s;
            opacity: 0;
            pointer-events: none;
        }
        .back-top.show {
            opacity: 1;
            pointer-events: auto;
        }
        .back-top:hover {
            background: #f1e8ff;
        }
        /* 滚动渐入 */
        .fade-in {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }
        /* 素材展示框（无真实图片时，采用彩色占位块） */
        .media-placeholder {
            border-radius: 20px;
            background: linear-gradient(135deg, rgba(123, 44, 191, 0.15), rgba(0, 229, 255, 0.1));
            min-height: 180px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #7b2cbf;
            font-weight: 600;
            font-size: 1rem;
            border: 1px dashed rgba(123, 44, 191, 0.25);
            padding: 20px;
            transition: all 0.3s;
        }
        .media-placeholder:hover {
            background: linear-gradient(135deg, rgba(123, 44, 191, 0.2), rgba(0, 229, 255, 0.15));
            border-color: rgba(123, 44, 191, 0.5);
        }
        /* 响应式 */
        @media (max-width: 1024px) {
            h1 { font-size: 2.4rem; }
            .hero-grid { grid-template-columns: 1fr; gap: 32px; }
            .hero-content h1 { font-size: 2.6rem; }
            .hero-stats { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 16px 0;
                gap: 4px;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                margin: 0;
                width: 100%;
            }
            .nav-links a {
                display: block;
                padding: 10px 16px;
                font-size: 0.95rem;
            }
            .mobile-toggle { display: block; }
            .nav-container { flex-wrap: wrap; }
            .nav-links.active + .nav-cta-mobile { display: block; }
            .hero-content h1 { font-size: 2rem; }
            .hero-stats { grid-template-columns: 1fr 1fr; padding: 18px; }
            h2 { font-size: 1.6rem; }
            .section { padding: 56px 0; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
        }
        @media (max-width: 480px) {
            .hero-content h1 { font-size: 1.7rem; }
            .btn-primary, .btn-secondary { width: 100%; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-stats { grid-template-columns: 1fr; }
        }