:root {
            --primary: #0052ff;
            --primary-glow: rgba(0, 82, 255, 0.15);
            --secondary: #7000ff;
            --accent: #00f0ff;
            --dark: #0f172a;
            --gray-text: #475569;
            --light-bg: #f8fafc;
            --border-color: #e2e8f0;
            --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.05);
            --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: #ffffff;
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        /* 统一的页面背景语言 */
        section {
            padding: 80px 0;
            position: relative;
            background-color: #ffffff;
        }
        
        section:nth-child(even) {
            background-color: var(--light-bg);
        }

        /* 极致鲜亮风的渐变背景修饰 */
        .bg-gradient-soft {
            background: radial-gradient(circle at 10% 20%, rgba(0, 240, 255, 0.05) 0%, rgba(112, 0, 255, 0.03) 90%);
        }

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

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

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

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

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

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

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 14px;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #ffffff;
            box-shadow: 0 4px 15px var(--primary-glow);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 82, 255, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-glow);
            color: var(--primary);
        }

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

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

        /* 首屏 Hero - 无图片设计，纯视觉层级 */
        .hero {
            padding: 120px 0 100px 0;
            background: radial-gradient(circle at 80% 20%, rgba(112, 0, 255, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 10% 80%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
                        linear-gradient(180deg, #ffffff 0%, var(--light-bg) 100%);
            text-align: center;
            overflow: hidden;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            background: rgba(0, 82, 255, 0.08);
            border: 1px solid rgba(0, 82, 255, 0.2);
            border-radius: 30px;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 25px;
            letter-spacing: 1px;
            animation: pulse 2s infinite;
        }

        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            max-width: 900px;
            margin: 0 auto 20px auto;
            background: linear-gradient(135deg, var(--dark) 30%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--gray-text);
            max-width: 680px;
            margin: 0 auto 35px auto;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 15px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .hero-highlights {
            display: flex;
            justify-content: center;
            gap: 30px;
            flex-wrap: wrap;
            margin-top: 20px;
        }

        .hl-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--dark);
        }

        .hl-item svg {
            color: var(--accent);
            fill: var(--primary);
        }

        /* 通用标题 */
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 55px auto;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 15px;
            position: relative;
        }

        .section-header p {
            color: var(--gray-text);
            font-size: 16px;
        }

        /* 数据指标 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .stat-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px 20px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }

        .stat-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 5px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-label {
            font-size: 14px;
            color: var(--gray-text);
            font-weight: 500;
        }

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

        .service-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 35px 25px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(to bottom, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.08);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .icon-box {
            width: 50px;
            height: 50px;
            border-radius: 10px;
            background: var(--primary-glow);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 25px;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .service-card p {
            color: var(--gray-text);
            font-size: 14px;
            margin-bottom: 15px;
        }

        /* 模型聚合滑动带 */
        .marquee-container {
            width: 100%;
            overflow: hidden;
            white-space: nowrap;
            padding: 20px 0;
            background: linear-gradient(90deg, #f8fafc, #ffffff, #f8fafc);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .marquee-track {
            display: inline-flex;
            gap: 20px;
            animation: marquee 40s linear infinite;
        }

        .model-badge {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 10px 20px;
            border-radius: 30px;
            font-weight: 600;
            color: var(--dark);
            font-size: 14px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

        .model-badge:hover {
            border-color: var(--accent);
            color: var(--secondary);
            transform: scale(1.05);
        }

        /* 标准化流程步骤 */
        .step-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px 20px;
            position: relative;
            transition: var(--transition);
        }

        .step-card:hover {
            border-color: var(--primary);
            box-shadow: var(--card-shadow);
        }

        .step-num {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 48px;
            font-weight: 800;
            color: rgba(0, 82, 255, 0.08);
            line-height: 1;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            margin-top: 15px;
        }

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

        /* 对比评测表格 */
        .table-responsive {
            overflow-x: auto;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            background: #ffffff;
        }

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

        th, td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

        th {
            background-color: var(--light-bg);
            font-weight: 700;
            color: var(--dark);
        }

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

        .highlight-col {
            background-color: rgba(0, 82, 255, 0.02);
            font-weight: 600;
        }

        .star-rating {
            color: #f59e0b;
            font-size: 16px;
        }

        /* 推荐面板 */
        .review-panel {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.05) 0%, rgba(112, 0, 255, 0.05) 100%);
            border: 1.5px solid var(--primary-glow);
            border-radius: 16px;
            padding: 30px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 40px;
        }

        .review-score {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .score-big {
            font-size: 54px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

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

        .score-label strong {
            color: var(--dark);
            font-size: 16px;
            display: block;
        }

        /* 训练模块 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .train-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px 15px;
            text-align: center;
            transition: var(--transition);
        }

        .train-card:hover {
            transform: translateY(-5px);
            border-color: var(--secondary);
            box-shadow: var(--card-shadow);
        }

        .train-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .train-card p {
            font-size: 12px;
            color: var(--gray-text);
        }

        /* 客户案例 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .case-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .case-img-box {
            position: relative;
            padding-bottom: 60%;
            background-color: #f1f5f9;
        }

        .case-img-box img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-info {
            padding: 20px;
        }

        .case-info h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

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

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

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            user-select: none;
            transition: var(--transition);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            color: var(--gray-text);
            font-size: 14px;
            margin-top: 0;
        }

        .faq-answer.show {
            margin-top: 15px;
            max-height: 300px;
        }

        .faq-icon {
            font-size: 18px;
            font-weight: 300;
            transition: var(--transition);
        }

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

        /* 评论 */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .testi-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            position: relative;
            transition: var(--transition);
        }

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

        .testi-quote {
            font-size: 14px;
            color: var(--gray-text);
            margin-bottom: 20px;
            position: relative;
        }

        .testi-user {
            display: flex;
            align-items: center;
            gap: 15px;
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
        }

        .testi-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--light-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
            border: 1px solid var(--border-color);
        }

        .testi-name {
            font-weight: 600;
            font-size: 14px;
        }

        .testi-role {
            font-size: 12px;
            color: var(--gray-text);
        }

        /* 资讯 / 表单部分 */
        .info-form-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .article-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .article-card {
            display: flex;
            gap: 15px;
            padding: 15px;
            border: 1px solid var(--border-color);
            border-radius: 10px;
            background: #ffffff;
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        .article-card:hover {
            border-color: var(--primary);
            transform: translateX(5px);
        }

        .article-card h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 5px;
            color: var(--dark);
        }

        .article-card p {
            font-size: 13px;
            color: var(--gray-text);
        }

        .form-container {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            box-shadow: var(--card-shadow);
        }

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

        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--dark);
        }

        .form-control {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            color: var(--dark);
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-glow);
        }

        select.form-control {
            appearance: none;
            background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") no-repeat right 14px center;
            background-size: 16px;
        }

        /* 侧边悬浮 */
        .floating-box {
            position: fixed;
            right: 25px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #ffffff;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            position: relative;
        }

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

        .float-btn svg {
            width: 22px;
            height: 22px;
            fill: currentColor;
        }

        .float-btn .qr-tooltip {
            position: absolute;
            bottom: 60px;
            right: 0;
            width: 160px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
            padding: 15px;
            display: none;
            text-align: center;
            color: var(--dark);
        }

        .float-btn .qr-tooltip img {
            width: 100%;
            height: auto;
            border-radius: 6px;
        }

        .float-btn .qr-tooltip p {
            font-size: 12px;
            margin-top: 8px;
            font-weight: 600;
        }

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

        /* 页脚 */
        footer {
            background: var(--dark);
            color: #e2e8f0;
            padding: 60px 0 30px 0;
            border-top: 1.5px solid rgba(255, 255, 255, 0.1);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr repeat(3, 0.6fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo-area img {
            height: 38px;
            width: auto;
            margin-bottom: 15px;
        }

        .footer-logo-area p {
            font-size: 13px;
            color: #94a3b8;
            max-width: 280px;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 20px;
            position: relative;
        }

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

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

        .footer-col ul li a {
            text-decoration: none;
            color: #94a3b8;
            font-size: 13px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 12px;
            color: #94a3b8;
        }

        .footer-bottom-links a {
            color: #94a3b8;
            text-decoration: none;
            margin-left: 15px;
            transition: var(--transition);
        }

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

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 15px;
        }

        .qr-item {
            text-align: center;
            font-size: 11px;
            color: #94a3b8;
        }

        .qr-item img {
            width: 80px;
            height: 80px;
            border-radius: 6px;
            background: #fff;
            padding: 2px;
            margin-bottom: 5px;
        }

        /* 动画 */
        @keyframes marquee {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        @keyframes pulse {
            0% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.03); opacity: 0.9; }
            100% { transform: scale(1); opacity: 1; }
        }

        /* 移动端适配 */
        @media (max-width: 1024px) {
            .grid-3, .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid, .step-container, .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #ffffff;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-menu.show {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .grid-3, .testimonial-grid, .stats-grid, .step-container, .case-grid, .training-grid {
                grid-template-columns: 1fr;
            }
            .info-form-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .review-panel {
                flex-direction: column;
                align-items: flex-start;
            }
            .nav-actions {
                display: none;
            }
        }