/* 暗夜赛博高饱和粉紫风 CSS */
        :root {
            --bg-dark: #090514;
            --bg-card: rgba(22, 12, 42, 0.7);
            --bg-card-hover: rgba(35, 18, 66, 0.85);
            --primary-pink: #ff007f;
            --primary-purple: #9d4edd;
            --accent-cyan: #00f0ff;
            --neon-glow: 0 0 15px rgba(255, 0, 127, 0.4), 0 0 30px rgba(157, 78, 221, 0.2);
            --neon-glow-cyan: 0 0 15px rgba(0, 240, 255, 0.4);
            --text-main: #f8fafc;
            --text-sub: #94a3b8;
            --border-neon: rgba(255, 0, 127, 0.3);
            --border-purple: rgba(157, 78, 221, 0.3);
            --radius-main: 12px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        html {
            scroll-behavior: smooth;
            background-color: var(--bg-dark);
            color: var(--text-main);
        }

        body {
            background: radial-gradient(circle at 50% 0%, #200b3b 0%, #090514 70%);
            min-height: 100vh;
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 统一容器控制 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 标题与通用排版 */
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-tag {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(255, 0, 127, 0.15);
            border: 1px solid var(--primary-pink);
            color: var(--primary-pink);
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 12px;
            box-shadow: var(--neon-glow);
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 50%, var(--primary-pink) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 12px;
        }

        .section-desc {
            color: var(--text-sub);
            max-width: 700px;
            margin: 0 auto;
            font-size: 1rem;
        }

        /* 导航栏 */
        .header-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(9, 5, 20, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(157, 78, 221, 0.2);
        }

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

        .brand-logo-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
        }

        .ai-page-logo {
            height: 38px;
            width: auto;
            filter: drop-shadow(0 0 8px rgba(255, 0, 127, 0.6));
        }

        .brand-title {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
        }

        .brand-title span {
            color: var(--primary-pink);
        }

        .nav-menu {
            display: flex;
            align-items: center;
        }

        /* 严抓规则：.nav-links 的 gap 必须设置为 0 */
        .nav-links {
            display: flex;
            gap: 0;
            align-items: center;
            list-style: none;
        }

        .nav-links li a {
            color: #cbd5e1;
            text-decoration: none;
            padding: 8px 12px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            display: inline-block;
        }

        .nav-links li a:hover {
            color: var(--primary-pink);
            text-shadow: 0 0 8px var(--primary-pink);
        }

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

        .btn-cyber {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 9px 20px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            text-decoration: none;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-pink), var(--primary-purple));
            color: #fff;
            box-shadow: var(--neon-glow);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 25px rgba(255, 0, 127, 0.7);
        }

        .btn-outline {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
        }

        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.15);
            box-shadow: var(--neon-glow-cyan);
            transform: translateY(-2px);
        }

        /* 移动端菜单切换 */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* Hero 首屏 - 严格禁止使用任何图片资源 */
        .hero-section {
            padding-top: 140px;
            padding-bottom: 80px;
            position: relative;
            text-align: center;
            overflow: hidden;
        }

        .hero-glow-bg {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 0, 127, 0.15) 0%, rgba(157, 78, 221, 0.1) 40%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }

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

        .hero-h1 {
            font-size: 2.6rem;
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 30%, #f472b6 70%, var(--primary-pink) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: #cbd5e1;
            margin-bottom: 32px;
            line-height: 1.7;
        }

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

        .btn-hero-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: 10px;
        }

        .hero-badge-group {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
        }

        .hero-badge {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 0, 127, 0.2);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            color: #e2e8f0;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-main);
            padding: 24px 16px;
            text-align: center;
            transition: var(--transition);
            backdrop-filter: blur(10px);
        }

        .stat-card:hover {
            transform: translateY(-50px);
            border-color: var(--primary-pink);
            box-shadow: var(--neon-glow);
        }

        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            margin-bottom: 4px;
            text-shadow: var(--neon-glow-cyan);
        }

        .stat-label {
            color: var(--text-sub);
            font-size: 0.88rem;
        }

        /* 通用 Section 样式 */
        .page-section {
            padding: 80px 0;
            position: relative;
        }

        .section-alt {
            background: rgba(18, 9, 36, 0.4);
            border-top: 1px solid rgba(157, 78, 221, 0.15);
            border-bottom: 1px solid rgba(157, 78, 221, 0.15);
        }

        /* 网格卡片布局 */
        .cards-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .cards-grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .cyber-card {
            background: var(--bg-card);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-main);
            padding: 28px 24px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .cyber-card:hover {
            border-color: var(--primary-pink);
            transform: translateY(-5px);
            box-shadow: var(--neon-glow);
            background: var(--bg-card-hover);
        }

        .card-icon-title {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }

        .card-tag-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary-pink), var(--primary-purple));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
        }

        .card-text {
            color: var(--text-sub);
            font-size: 0.92rem;
            line-height: 1.6;
        }

        /* 步骤流程组件 */
        .workflow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-main);
            padding: 24px;
            position: relative;
        }

        .step-num {
            font-size: 2.8rem;
            font-weight: 900;
            color: rgba(255, 0, 127, 0.2);
            position: absolute;
            top: 10px;
            right: 16px;
            line-height: 1;
        }

        .step-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 8px;
        }

        /* 标签云模型展示 */
        .models-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 24px;
        }

        .model-chip {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(157, 78, 221, 0.3);
            padding: 8px 18px;
            border-radius: 20px;
            color: #e2e8f0;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .model-chip:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: var(--neon-glow-cyan);
            transform: scale(1.05);
        }

        /* 对比表格组件 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: var(--radius-main);
            border: 1px solid var(--border-purple);
            background: var(--bg-card);
        }

        .cyber-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 650px;
        }

        .cyber-table th, .cyber-table td {
            padding: 16px 20px;
            border-bottom: 1px solid rgba(157, 78, 221, 0.15);
        }

        .cyber-table th {
            background: rgba(35, 18, 66, 0.9);
            color: var(--accent-cyan);
            font-weight: 700;
        }

        .cyber-table tr:hover {
            background: rgba(255, 0, 127, 0.05);
        }

        .highlight-cell {
            color: var(--primary-pink);
            font-weight: 700;
        }

        /* 评测分数高亮盒 */
        .score-banner {
            background: linear-gradient(135deg, rgba(255,0,127,0.15), rgba(157,78,221,0.25));
            border: 1px solid var(--primary-pink);
            border-radius: var(--radius-main);
            padding: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            box-shadow: var(--neon-glow);
        }

        .score-box {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .score-number {
            font-size: 3rem;
            font-weight: 900;
            color: var(--primary-pink);
            line-height: 1;
        }

        .score-details {
            display: flex;
            flex-direction: column;
        }

        .score-stars {
            color: #f59e0b;
            font-size: 1.2rem;
        }

        /* 用户评论卡片 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-purple);
            border-radius: var(--radius-main);
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 16px;
        }

        .user-avatar-placeholder {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-pink), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
        }

        /* FAQ 折叠面板 */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-purple);
            border-radius: 8px;
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            padding: 18px 24px;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.02rem;
            font-weight: 600;
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--primary-pink);
        }

        .faq-icon {
            transition: transform 0.3s ease;
            color: var(--accent-cyan);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: rgba(9, 5, 20, 0.4);
        }

        .faq-answer-inner {
            padding: 0 24px 20px 24px;
            color: var(--text-sub);
            font-size: 0.95rem;
            line-height: 1.6;
        }

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

        /* 表单区域 */
        .form-container {
            max-width: 800px;
            margin: 0 auto;
            background: var(--bg-card);
            border: 1px solid var(--primary-pink);
            border-radius: var(--radius-main);
            padding: 36px;
            box-shadow: var(--neon-glow);
        }

        .form-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

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

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

        .form-label {
            font-size: 0.9rem;
            color: #e2e8f0;
            font-weight: 500;
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px 16px;
            background: rgba(9, 5, 20, 0.8);
            border: 1px solid var(--border-purple);
            border-radius: 6px;
            color: #fff;
            font-size: 0.95rem;
            outline: none;
            transition: var(--transition);
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            border-color: var(--primary-pink);
            box-shadow: 0 0 10px rgba(255, 0, 127, 0.3);
        }

        /* 图片与图文混合区域 */
        .image-banner-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .banner-img-wrap {
            border-radius: var(--radius-main);
            overflow: hidden;
            border: 1px solid var(--border-purple);
            transition: var(--transition);
        }

        .banner-img-wrap:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--neon-glow-cyan);
        }

        /* 页脚规范：严格独立显式样式 */
        .site-footer {
            background: #05030a;
            border-top: 1px solid rgba(157, 78, 221, 0.2);
            padding: 60px 0 30px 0;
            color: #94a3b8;
            font-size: 0.9rem;
        }

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

        .footer-col-title {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-links-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links-list a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .friendship-links-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 12px;
        }

        .friendship-links-wrap a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.88rem;
            transition: var(--transition);
        }

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

        .qr-card {
            display: flex;
            align-items: center;
            gap: 16px;
            background: rgba(255, 255, 255, 0.03);
            padding: 12px;
            border-radius: 8px;
            border: 1px solid rgba(157, 78, 221, 0.2);
        }

        .qr-card img {
            width: 80px;
            height: 80px;
            border-radius: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            color: #64748b;
        }

        /* 浮动客服入口 */
        .floating-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-pink), var(--primary-purple));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            box-shadow: var(--neon-glow);
            transition: var(--transition);
            font-size: 1.2rem;
        }

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

        /* 响应式适配 */
        @media (max-width: 992px) {
            .cards-grid-3, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cards-grid-4, .stats-grid, .workflow-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .image-banner-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav-links {
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(9, 5, 20, 0.95);
                flex-direction: column;
                padding: 20px 0;
                border-bottom: 1px solid var(--border-purple);
                display: none;
            }
            .nav-links.active {
                display: flex;
            }
            .hero-h1 {
                font-size: 1.8rem;
            }
            .cards-grid-3, .cards-grid-4, .stats-grid, .workflow-steps, .reviews-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full-width {
                grid-column: span 1;
            }
            .score-banner {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }
        }