/* 核心重置与基础变量 */
        :root {
            --primary: #FFD200; /* 鲜黄 */
            --primary-hover: #E6BD00;
            --dark: #121212; /* 深黑 */
            --dark-light: #1E1E1F; /* 浅黑卡片背景 */
            --light: #F8F9FA; /* 浅灰 */
            --text-dark: #222222;
            --text-muted: #666666;
            --border-color: #E5E7EB;
            --container-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--light);
            color: var(--text-dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        /* 布局容器 */
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-padding {
            padding: 80px 0;
        }

        /* 鲜黄风格辅助 */
        .bg-dark {
            background-color: var(--dark);
            color: #FFFFFF;
        }

        .bg-yellow {
            background-color: var(--primary);
            color: var(--dark);
        }

        .text-yellow {
            color: var(--primary);
        }

        /* 头部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background-color: rgba(18, 18, 18, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 2px solid var(--primary);
        }

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

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

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

        .nav-links a {
            color: #FFFFFF;
            font-weight: 500;
            font-size: 14px;
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: var(--dark);
            padding: 8px 16px;
            border-radius: 4px;
            font-weight: bold;
            font-size: 14px;
        }

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

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: #FFFFFF;
            transition: var(--transition);
        }

        /* 首屏 Hero - 无图片 */
        .hero {
            padding-top: 150px;
            padding-bottom: 90px;
            background: linear-gradient(135deg, #121212 0%, #1a1a1c 100%);
            color: #FFFFFF;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,210,0,0.05) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 20px;
            font-weight: 800;
        }

        .hero p {
            font-size: 1.2rem;
            color: #CCCCCC;
            max-width: 800px;
            margin: 0 auto 40px;
        }

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

        .btn-main {
            background-color: var(--primary);
            color: var(--dark);
            padding: 15px 35px;
            font-size: 1.1rem;
            font-weight: bold;
            border-radius: 30px;
            box-shadow: 0 4px 15px rgba(255, 210, 0, 0.3);
        }

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

        .btn-sub {
            background-color: transparent;
            color: #FFFFFF;
            border: 2px solid #FFFFFF;
            padding: 15px 35px;
            font-size: 1.1rem;
            font-weight: bold;
            border-radius: 30px;
        }

        .btn-sub:hover {
            background-color: #FFFFFF;
            color: var(--dark);
        }

        /* 结构化通用标题 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--primary);
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1.1rem;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-bottom: 50px;
        }

        .stat-card {
            background-color: #FFFFFF;
            padding: 30px 20px;
            text-align: center;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            border-top: 4px solid var(--primary);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 10px;
        }

        /* 服务与能力卡片 */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background-color: #FFFFFF;
            padding: 40px 30px;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }

        .service-card:hover {
            border-color: var(--primary);
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        }

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

        .service-card h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 平台介绍大图文 */
        .intro-block {
            display: flex;
            align-items: center;
            gap: 50px;
            flex-wrap: wrap;
        }

        .intro-text {
            flex: 1;
            min-width: 300px;
        }

        .intro-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
        }

        .intro-text ul {
            list-style: none;
            margin-bottom: 30px;
        }

        .intro-text ul li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 12px;
            font-weight: 500;
        }

        .intro-text ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        .intro-media {
            flex: 1;
            min-width: 300px;
        }

        .intro-media img {
            border-radius: 8px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
            width: 100%;
        }

        /* 流程步骤与时间线 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 4px;
            background-color: var(--border-color);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            width: 50%;
            padding: 20px 40px;
            box-sizing: border-box;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            top: 30px;
            right: -10px;
            width: 20px;
            height: 20px;
            background-color: var(--primary);
            border-radius: 50%;
            z-index: 1;
        }

        .timeline-item:nth-child(even)::after {
            left: -10px;
        }

        .timeline-content {
            background-color: #FFFFFF;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
        }

        /* 对比评测表格 */
        .table-responsive {
            overflow-x: auto;
            background-color: #FFFFFF;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            margin-bottom: 40px;
        }

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

        th, td {
            padding: 18px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        th {
            background-color: var(--dark);
            color: #FFFFFF;
            font-weight: 600;
        }

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

        .highlight-row {
            background-color: rgba(255, 210, 0, 0.05);
            font-weight: bold;
        }

        .score-badge {
            background-color: var(--primary);
            color: var(--dark);
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: bold;
        }

        /* 标签云组件 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 20px;
        }

        .tag-item {
            background-color: rgba(255,255,255,0.1);
            color: #FFFFFF;
            padding: 6px 15px;
            border-radius: 20px;
            font-size: 0.9rem;
            border: 1px solid rgba(255,255,255,0.2);
            transition: var(--transition);
        }

        .tag-item:hover {
            background-color: var(--primary);
            color: var(--dark);
            border-color: var(--primary);
        }

        /* 客户案例 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .case-card {
            background-color: #FFFFFF;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.1);
        }

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

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

        .case-info {
            padding: 25px;
        }

        .case-tag {
            background-color: rgba(255, 210, 0, 0.1);
            color: var(--dark);
            font-size: 0.8rem;
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: bold;
        }

        /* 用户评论 */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .testimonial-card {
            background-color: #FFFFFF;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            position: relative;
        }

        .testimonial-text {
            font-style: italic;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .user-info h4 {
            font-size: 1rem;
            margin-bottom: 2px;
        }

        .user-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

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

        .faq-item {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            margin-bottom: 15px;
            overflow: hidden;
        }

        .faq-question {
            padding: 20px;
            font-weight: bold;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: #FFFFFF;
            transition: var(--transition);
        }

        .faq-question:hover {
            background-color: #FAFBFD;
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            padding: 20px;
            border-top: 1px solid var(--border-color);
        }

        .faq-icon::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: 300;
        }

        .faq-item.active .faq-icon::after {
            content: '−';
        }

        /* 文章列表与资讯 */
        .article-section {
            background-color: #FFFFFF;
        }

        .article-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin-bottom: 40px;
        }

        .article-card {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 25px;
            transition: var(--transition);
        }

        .article-card:hover {
            border-color: var(--primary);
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }

        .article-card h4 {
            font-size: 1.2rem;
            margin-bottom: 15px;
            line-height: 1.4;
        }

        .article-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }

        .article-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
        }

        /* 表单与加盟 */
        .contact-wrapper {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: start;
        }

        .contact-info {
            background-color: var(--dark);
            color: #FFFFFF;
            padding: 40px;
            border-radius: 8px;
            border-left: 6px solid var(--primary);
        }

        .contact-info h3 {
            font-size: 1.8rem;
            margin-bottom: 25px;
            color: var(--primary);
        }

        .contact-detail-item {
            margin-bottom: 25px;
        }

        .contact-detail-item label {
            display: block;
            font-size: 0.85rem;
            color: #888888;
            margin-bottom: 5px;
        }

        .contact-detail-item p {
            font-size: 1.1rem;
            font-weight: 500;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 30px;
        }

        .qr-item {
            text-align: center;
        }

        .qr-item img {
            width: 120px;
            height: 120px;
            background-color: #FFFFFF;
            padding: 5px;
            border-radius: 4px;
        }

        .qr-item p {
            font-size: 0.8rem;
            margin-top: 8px;
            color: #CCCCCC;
        }

        .contact-form {
            background-color: #FFFFFF;
            padding: 45px;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: bold;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-size: 1rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255,210,0,0.2);
        }

        .submit-btn {
            background-color: var(--primary);
            color: var(--dark);
            width: 100%;
            padding: 15px;
            border: none;
            border-radius: 4px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
        }

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

        /* 浮动客服入口 */
        .float-contact {
            position: fixed;
            right: 25px;
            bottom: 25px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--primary);
            color: var(--dark);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(0,0,0,0.2);
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
        }

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

        .float-qr {
            position: absolute;
            right: 65px;
            bottom: 0;
            background-color: #FFFFFF;
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
            width: 160px;
        }

        .float-qr img {
            width: 130px;
            height: 130px;
        }

        .float-qr p {
            font-size: 0.8rem;
            color: var(--text-dark);
            margin-top: 5px;
        }

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

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: #FFFFFF;
            padding: 60px 0 30px;
            border-top: 4px solid var(--primary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

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

        .footer-logo img {
            max-width: 180px;
        }

        .footer-col h5 {
            font-size: 1.1rem;
            color: var(--primary);
            margin-bottom: 20px;
            font-weight: 600;
        }

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

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

        .footer-col ul li a {
            color: #BBBBBB;
            font-size: 0.9rem;
        }

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

        .friend-links {
            border-top: 1px solid #2A2A2D;
            padding-top: 25px;
            margin-bottom: 25px;
            font-size: 0.85rem;
            color: #888888;
        }

        .friend-links a {
            color: #888888;
            margin-right: 15px;
            display: inline-block;
        }

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

        .footer-bottom {
            border-top: 1px solid #2A2A2D;
            padding-top: 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: #888888;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .contact-wrapper {
                grid-template-columns: 1fr;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 50px;
                padding-right: 0;
            }
            .timeline-item:nth-child(odd) {
                text-align: left;
            }
            .timeline-item:nth-child(even) {
                left: 0;
            }
            .timeline-item::after {
                left: 10px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: var(--dark);
                padding: 20px;
                border-bottom: 2px solid var(--primary);
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
        }