:root {
            --bg-dark: #07050c;
            --bg-card: #120e24;
            --primary: #ff2e93;
            --secondary: #9d35ff;
            --accent: #00f5ff;
            --text-light: #f3f1f6;
            --text-muted: #8c8599;
            --border-glow: rgba(255, 46, 147, 0.2);
            --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;
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 统一外层居中容器 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(7, 5, 12, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 46, 147, 0.15);
        }

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo-area img {
            height: 40px;
        }

        .nav-menu {
            display: flex;
            gap: 20px;
            list-style: none;
        }

        .nav-menu a {
            color: var(--text-light);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }

        .nav-menu a:hover {
            color: var(--primary);
            text-shadow: 0 0 8px rgba(255, 46, 147, 0.6);
        }

        .nav-btn {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: #fff;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 14px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(255, 46, 147, 0.4);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 25px rgba(255, 46, 147, 0.8);
        }

        /* 移动端菜单切换按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 1001;
        }

        .menu-toggle span {
            width: 25px;
            height: 30px;
            height: 3px;
            background-color: var(--text-light);
            border-radius: 3px;
            transition: var(--transition);
        }

        /* Hero首屏 - 严禁出现任何图片 */
        .hero-section {
            padding: 160px 0 100px 0;
            background: radial-gradient(circle at 50% 30%, rgba(157, 53, 255, 0.15) 0%, rgba(7, 5, 12, 0) 70%);
            text-align: center;
            position: relative;
        }

        .hero-badge {
            background: rgba(255, 46, 147, 0.1);
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 13px;
            display: inline-block;
            margin-bottom: 20px;
            letter-spacing: 1px;
            animation: pulse 2s infinite;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #fff 30%, var(--accent) 70%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 0 30px rgba(0, 245, 255, 0.1);
        }

        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 35px auto;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 15px;
            flex-wrap: wrap;
        }

        .btn-large {
            padding: 14px 32px;
            font-size: 16px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: bold;
            transition: var(--transition);
        }

        .btn-primary {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 0 20px rgba(255, 46, 147, 0.5);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 35px var(--primary);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-light);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--accent);
            color: var(--accent);
        }

        /* 章节标题 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1rem;
        }

        .section-padding {
            padding: 80px 0;
            border-bottom: 1px solid rgba(255, 46, 147, 0.08);
        }

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

        .stat-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 256, 257, 0.05);
            border-radius: 12px;
            padding: 30px 20px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: 0 5px 20px rgba(255, 46, 147, 0.15);
        }

        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 8px;
            font-family: monospace;
        }

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

        /* 服务能力卡片 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 46, 147, 0.08);
            border-radius: 16px;
            padding: 30px;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            border-color: var(--accent);
            box-shadow: 0 10px 30px rgba(0, 245, 255, 0.15);
        }

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .service-title {
            font-size: 1.25rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }

        .service-desc {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 15px;
        }

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

        .service-tag {
            font-size: 11px;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-light);
            padding: 2px 8px;
            border-radius: 4px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* 流程步骤 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            background: var(--bg-card);
            border-radius: 12px;
            padding: 24px;
            position: relative;
            z-index: 2;
        }

        .step-num {
            position: absolute;
            top: -15px;
            right: 20px;
            font-size: 3rem;
            font-weight: 900;
            color: rgba(255, 46, 147, 0.1);
            line-height: 1;
        }

        .step-title {
            font-size: 1.1rem;
            color: var(--accent);
            margin-bottom: 10px;
            font-weight: bold;
        }

        .step-desc {
            color: var(--text-muted);
            font-size: 13px;
        }

        /* 对比评测板块 */
        .evaluation-box {
            background: var(--bg-card);
            border-radius: 20px;
            border: 1px solid var(--primary);
            padding: 40px;
            display: flex;
            align-items: center;
            gap: 40px;
            box-shadow: 0 0 30px rgba(255, 46, 147, 0.1);
        }

        .eval-score-card {
            text-align: center;
            min-width: 200px;
            border-right: 1px solid rgba(255, 255, 255, 0.1);
            padding-right: 40px;
        }

        .eval-stars {
            color: #ffd700;
            font-size: 1.8rem;
            margin-bottom: 10px;
        }

        .eval-score-num {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }

        .eval-score-total {
            font-size: 14px;
            color: var(--text-muted);
        }

        .eval-details {
            flex-grow: 1;
        }

        /* 对比表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            margin-top: 30px;
        }

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

        .comparison-table th, .comparison-table td {
            padding: 15px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .comparison-table th {
            background-color: rgba(255, 255, 255, 0.03);
            color: var(--accent);
            font-weight: bold;
        }

        .comparison-table tr:hover td {
            background-color: rgba(255, 255, 255, 0.02);
        }

        .comparison-table td.highlight {
            color: var(--primary);
            font-weight: bold;
        }

        /* 案例展示区 & 宣传图 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .case-card {
            background: var(--bg-card);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: scale(1.02);
            border-color: var(--accent);
        }

        .case-img-wrap {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #111;
        }

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

        .case-info {
            padding: 20px;
        }

        .case-title {
            font-size: 1.1rem;
            color: #fff;
            margin-bottom: 8px;
        }

        .case-desc {
            color: var(--text-muted);
            font-size: 13px;
        }

        /* 客户评论卡片 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .review-card {
            background: var(--bg-card);
            border-radius: 12px;
            padding: 24px;
            border: 1px solid rgba(255, 46, 147, 0.05);
            position: relative;
        }

        .review-user-info {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 15px;
        }

        .review-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: #fff;
        }

        .review-user-meta h4 {
            font-size: 14px;
            color: #fff;
        }

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

        .review-content {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Token比价与匹配区 */
        .token-price-wrapper {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 30px;
        }

        .price-list-box {
            background: var(--bg-card);
            border-radius: 16px;
            padding: 30px;
        }

        .form-box {
            background: var(--bg-card);
            border-radius: 16px;
            padding: 30px;
            border: 1px solid rgba(0, 245, 255, 0.15);
        }

        .form-group {
            margin-bottom: 18px;
        }

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

        .form-control {
            width: 100%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 8px;
            padding: 10px 15px;
            color: #fff;
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--accent);
            box-shadow: 0 0 10px rgba(0, 245, 255, 0.2);
        }

        .btn-submit {
            width: 100%;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border: none;
            color: white;
            padding: 12px;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(255, 46, 147, 0.3);
        }

        .btn-submit:hover {
            box-shadow: 0 4px 25px rgba(255, 46, 147, 0.6);
            transform: translateY(-2px);
        }

        /* 标签云与术语百科 */
        .tags-container {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .pill-tag {
            background: rgba(157, 53, 255, 0.1);
            border: 1px solid rgba(157, 53, 255, 0.3);
            color: var(--text-light);
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 13px;
            transition: var(--transition);
            cursor: default;
        }

        .pill-tag:hover {
            background: var(--secondary);
            border-color: var(--secondary);
            transform: translateY(-2px);
        }

        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .wiki-card {
            background: var(--bg-card);
            border-radius: 10px;
            padding: 20px;
            border-left: 4px solid var(--accent);
        }

        .wiki-title {
            color: var(--accent);
            font-weight: bold;
            margin-bottom: 8px;
            font-size: 15px;
        }

        .wiki-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* FAQ 折叠面板 */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            color: #fff;
        }

        .faq-question::after {
            content: '+';
            font-size: 18px;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
        }

        .faq-item.active {
            border-color: rgba(255, 46, 147, 0.3);
            box-shadow: 0 0 15px rgba(255, 46, 147, 0.05);
        }

        .faq-item.active .faq-question::after {
            content: '-';
            transform: rotate(90deg);
        }

        .faq-item.active .faq-answer {
            padding: 0 24px 20px 24px;
            max-height: 500px; /* 大到能容纳 */
            transition: max-height 0.3s cubic-bezier(1, 0, 1, 0), padding 0.3s ease;
        }

        /* 常见问题排查与知识库 */
        .diag-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .diag-card {
            background: var(--bg-card);
            border-radius: 12px;
            padding: 24px;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .diag-problem {
            font-weight: bold;
            color: #ff4a4a;
            margin-bottom: 10px;
            font-size: 15px;
        }

        .diag-solution {
            color: var(--text-muted);
            font-size: 13px;
        }

        .diag-solution strong {
            color: var(--accent);
        }

        .article-list {
            list-style: none;
        }

        .article-item {
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .article-item a {
            color: var(--text-light);
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
        }

        .article-item a:hover {
            color: var(--accent);
        }

        .article-date {
            color: var(--text-muted);
            font-size: 12px;
        }

        /* 侧边浮动与微信客服 */
        .float-contact {
            position: fixed;
            right: 20px;
            bottom: 80px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(255, 46, 147, 0.4);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }

        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: #fff;
        }

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

        /* 隐藏的微信二维码浮层 */
        .qr-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: var(--bg-card);
            border: 1px solid var(--primary);
            border-radius: 8px;
            padding: 12px;
            width: 150px;
            display: none;
            text-align: center;
            box-shadow: 0 5px 20px rgba(0,0,0,0.5);
        }

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

        .qr-popover span {
            font-size: 12px;
            color: var(--text-muted);
            display: block;
            margin-top: 5px;
        }

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

        /* 页脚区域 */
        footer {
            background: #040307;
            padding: 60px 0 30px 0;
            border-top: 1px solid rgba(255, 46, 147, 0.15);
            color: var(--text-muted);
            font-size: 13px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h3 {
            color: #fff;
            font-size: 15px;
            margin-bottom: 18px;
            font-weight: 600;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: var(--text-muted);
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-qr img {
            width: 100px;
            height: 100px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 6px;
        }

        .friendly-links {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friendly-links a {
            color: var(--text-muted);
            text-decoration: none;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .service-grid { grid-template-columns: repeat(2, 1fr); }
            .process-flow { grid-template-columns: repeat(2, 1fr); }
            .case-grid { grid-template-columns: repeat(2, 1fr); }
            .reviews-grid { grid-template-columns: repeat(2, 1fr); }
            .token-price-wrapper { grid-template-columns: 1fr; }
            .wiki-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--bg-card);
                border-bottom: 1px solid rgba(255, 46, 147, 0.15);
                padding: 20px;
                gap: 15px;
                text-align: center;
            }

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

            .menu-toggle {
                display: flex;
            }

            .hero-title {
                font-size: 2rem;
            }

            .evaluation-box {
                flex-direction: column;
                padding: 20px;
                gap: 20px;
            }

            .eval-score-card {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
                padding-right: 0;
                padding-bottom: 20px;
                width: 100%;
            }

            .stats-grid, .service-grid, .process-flow, .case-grid, .reviews-grid, .wiki-grid, .diag-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
        }

        /* 动画基础 */
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(255, 46, 147, 0.4); }
            70% { box-shadow: 0 0 0 10px rgba(255, 46, 147, 0); }
            100% { box-shadow: 0 0 0 0 rgba(255, 46, 147, 0); }
        }