/* 变量及全局设计系统 - 艳色潮流风 */
        :root {
            --primary: #ff007f; /* 潮流霓虹粉 */
            --secondary: #00f0ff; /* 潮流电光蓝 */
            --accent: #ffee00; /* 荧光黄 */
            --dark: #121214; /* 潮流碳黑 */
            --light: #faf9fb; /* 亮白底色 */
            --card-bg: #ffffff;
            --border-color: #121214;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --shadow-flat: 4px 4px 0px #121214;
            --shadow-flat-hover: 8px 8px 0px #121214;
        }

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

        body {
            font-family: var(--font-main);
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 基础排版 */
        h1, h2, h3, h4, h5, h6 {
            font-weight: 800;
            line-height: 1.2;
        }

        a {
            color: var(--dark);
            text-decoration: none;
            transition: all 0.2s ease;
        }

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

        /* 导航栏 */
        header {
            position: sticky;
            top: 0;
            background-color: var(--light);
            border-bottom: 3px solid var(--border-color);
            z-index: 1000;
        }

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

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

        .ai-page-logo {
            height: 40px;
            width: auto;
        }

        .brand-name {
            font-size: 1.5rem;
            font-weight: 900;
            letter-spacing: -0.5px;
            background: linear-gradient(45deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-link {
            font-weight: 700;
            font-size: 0.9rem;
            padding: 5px 8px;
            border-radius: 4px;
        }

        .nav-link:hover {
            background-color: var(--secondary);
            color: var(--dark);
        }

        .nav-btn {
            background: var(--primary);
            color: white;
            border: 2px solid var(--border-color);
            padding: 8px 16px;
            font-weight: 700;
            box-shadow: 2px 2px 0px var(--border-color);
            cursor: pointer;
        }

        .nav-btn:hover {
            box-shadow: 4px 4px 0px var(--border-color);
            transform: translate(-2px, -2px);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* 统一标题组件 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-tag {
            display: inline-block;
            background-color: var(--accent);
            padding: 4px 12px;
            font-weight: 800;
            font-size: 0.85rem;
            border: 2px solid var(--border-color);
            margin-bottom: 15px;
            transform: rotate(-1deg);
        }

        .section-title {
            font-size: 2.2rem;
            text-transform: uppercase;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 10%;
            width: 80%;
            height: 8px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            z-index: -1;
        }

        /* 各个模块公用外层样式 */
        section {
            padding: 80px 0;
            border-bottom: 3px solid var(--border-color);
        }

        /* Hero首屏 - 严禁包含任何图片 */
        .hero-section {
            background: linear-gradient(135deg, #fff 40%, #fff0f6 100%);
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            min-height: calc(100vh - 70px);
            padding: 60px 0;
        }

        .hero-inner {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            background: var(--secondary);
            border: 2px solid var(--border-color);
            padding: 6px 15px;
            font-weight: 800;
            font-size: 0.95rem;
            margin-bottom: 25px;
            box-shadow: 2px 2px 0 var(--border-color);
            display: inline-block;
            transform: rotate(1deg);
        }

        .hero-title {
            font-size: 3.5rem;
            margin-bottom: 25px;
            letter-spacing: -1px;
            line-height: 1.1;
        }

        .hero-title span {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 900;
        }

        .hero-desc {
            font-size: 1.25rem;
            max-width: 800px;
            margin-bottom: 40px;
            color: #4a4a4a;
            font-weight: 500;
        }

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

        .btn-main {
            background-color: var(--primary);
            color: #fff;
            font-size: 1.1rem;
            font-weight: 800;
            padding: 16px 36px;
            border: 3px solid var(--border-color);
            box-shadow: var(--shadow-flat);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-main:hover {
            box-shadow: var(--shadow-flat-hover);
            transform: translate(-4px, -4px);
            background-color: #e0006c;
        }

        .btn-secondary {
            background-color: #fff;
            color: var(--dark);
            font-size: 1.1rem;
            font-weight: 800;
            padding: 16px 36px;
            border: 3px solid var(--border-color);
            box-shadow: var(--shadow-flat);
            cursor: pointer;
        }

        .btn-secondary:hover {
            box-shadow: var(--shadow-flat-hover);
            transform: translate(-4px, -4px);
            background-color: var(--light);
        }

        /* 装饰背景元素 */
        .hero-bg-shapes {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            pointer-events: none;
            z-index: 1;
        }

        .shape {
            position: absolute;
            border: 3px solid var(--border-color);
            border-radius: 50%;
            background: transparent;
        }

        .shape-1 {
            width: 300px;
            height: 300px;
            top: -100px;
            right: -100px;
            background: radial-gradient(circle, rgba(0,240,255,0.1) 0%, transparent 80%);
        }

        .shape-2 {
            width: 200px;
            height: 200px;
            bottom: -50px;
            left: -50px;
            background: radial-gradient(circle, rgba(255,0,127,0.1) 0%, transparent 80%);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: -50px;
            position: relative;
            z-index: 10;
        }

        .stat-card {
            background-color: var(--card-bg);
            border: 3px solid var(--border-color);
            padding: 30px 20px;
            text-align: center;
            box-shadow: var(--shadow-flat);
        }

        .stat-num {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .stat-label {
            font-weight: 700;
            color: var(--dark);
        }

        /* 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

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

        .about-text p {
            margin-bottom: 20px;
            color: #555;
        }

        .highlight-box {
            background: #fff;
            border-left: 6px solid var(--primary);
            padding: 15px;
            margin: 20px 0;
            border: 3px solid var(--border-color);
            border-left-width: 10px;
        }

        .about-visual {
            background-color: var(--accent);
            border: 3px solid var(--border-color);
            padding: 40px;
            box-shadow: var(--shadow-flat);
            transform: rotate(-1deg);
        }

        .about-badge {
            background-color: #fff;
            border: 3px solid var(--border-color);
            padding: 15px;
            font-size: 1.1rem;
            font-weight: 800;
            text-align: center;
        }

        /* 全平台AIGC服务体系 */
        .services-intro {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 40px;
        }

        .grid-3col {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: #fff;
            border: 3px solid var(--border-color);
            padding: 30px;
            box-shadow: var(--shadow-flat);
            transition: all 0.2s ease;
        }

        .service-card:hover {
            box-shadow: var(--shadow-flat-hover);
            transform: translate(-4px, -4px);
        }

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
            display: inline-block;
        }

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

        .service-card p {
            font-size: 0.95rem;
            color: #666;
            margin-bottom: 15px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 5px;
        }

        .mini-tag {
            background-color: var(--light);
            border: 1px solid var(--border-color);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 2px 6px;
        }

        /* 标签云 (模型支持展示) */
        .tag-cloud-wrapper {
            margin-top: 50px;
            background-color: #fff;
            border: 3px solid var(--border-color);
            padding: 40px;
            box-shadow: var(--shadow-flat);
        }

        .tag-cloud-title {
            text-align: center;
            font-size: 1.3rem;
            margin-bottom: 25px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .cloud-tag {
            background: linear-gradient(135deg, var(--light), #fff);
            border: 2px solid var(--border-color);
            padding: 6px 14px;
            font-weight: 700;
            font-size: 0.9rem;
            border-radius: 20px;
            transition: all 0.1s;
        }

        .cloud-tag:hover {
            background: var(--accent);
            transform: scale(1.05);
        }

        /* 全自动AIGC制作流程 */
        .process-flow {
            display: flex;
            flex-direction: column;
            gap: 40px;
        }

        .flow-step {
            display: grid;
            grid-template-columns: 80px 1fr;
            gap: 30px;
            align-items: center;
            background-color: #fff;
            border: 3px solid var(--border-color);
            padding: 30px;
            box-shadow: var(--shadow-flat);
        }

        .step-num {
            width: 80px;
            height: 80px;
            background-color: var(--primary);
            color: #fff;
            border: 3px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            font-weight: 900;
            box-shadow: 3px 3px 0 var(--border-color);
        }

        .step-content h3 {
            font-size: 1.5rem;
            margin-bottom: 10px;
        }

        /* 解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .solution-card {
            background: #fff;
            border: 3px solid var(--border-color);
            padding: 35px;
            box-shadow: var(--shadow-flat);
        }

        .solution-card h3 {
            font-size: 1.6rem;
            margin-bottom: 15px;
            color: var(--primary);
        }

        .solution-list {
            margin-top: 15px;
            list-style: none;
        }

        .solution-list li {
            padding: 8px 0;
            border-bottom: 1px dashed #ddd;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .solution-list li::before {
            content: "✦";
            color: var(--secondary);
            font-weight: bold;
        }

        /* 服务网络与标准化服务流程 */
        .network-grid {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
        }

        .network-info {
            background-color: var(--secondary);
            border: 3px solid var(--border-color);
            padding: 30px;
            box-shadow: var(--shadow-flat);
        }

        .network-map-placeholder {
            background-color: #fff;
            border: 3px solid var(--border-color);
            padding: 40px;
            box-shadow: var(--shadow-flat);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            min-height: 300px;
        }

        .map-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 15px;
            width: 100%;
            margin-top: 20px;
        }

        .map-node {
            background: var(--light);
            border: 2px solid var(--border-color);
            padding: 10px;
            text-align: center;
            font-weight: 700;
            font-size: 0.9rem;
        }

        .map-node.active {
            background: var(--accent);
        }

        /* 商务开发标准化流程时间轴 */
        .timeline {
            position: relative;
            padding-left: 30px;
            border-left: 4px solid var(--border-color);
            margin: 40px 0;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 30px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -39px;
            top: 5px;
            width: 14px;
            height: 14px;
            background-color: var(--accent);
            border: 3px solid var(--border-color);
            border-radius: 50%;
        }

        .timeline-title {
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: 5px;
        }

        /* 技术标准 */
        .standards-container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .standard-card {
            border: 3px solid var(--border-color);
            padding: 25px;
            box-shadow: var(--shadow-flat);
            background: #fff;
        }

        .standard-card.featured {
            background-color: var(--accent);
        }

        /* 案例中心 - 包含图片配置 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: #fff;
            border: 3px solid var(--border-color);
            box-shadow: var(--shadow-flat);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .case-img-container {
            border-bottom: 3px solid var(--border-color);
            overflow: hidden;
            aspect-ratio: 16/9;
            background-color: #eaeaea;
        }

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

        .case-body {
            padding: 20px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .case-body h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
        }

        .case-body p {
            font-size: 0.9rem;
            color: #555;
            margin-bottom: 15px;
        }

        /* 对比评测 - 突出 9.9分推荐 */
        .rating-box {
            background: linear-gradient(135deg, var(--accent) 0%, #fff 100%);
            border: 4px solid var(--border-color);
            box-shadow: var(--shadow-flat);
            padding: 40px;
            margin-bottom: 50px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }

        .rating-info h3 {
            font-size: 2rem;
            margin-bottom: 10px;
        }

        .rating-score {
            text-align: center;
            background: #fff;
            border: 3px solid var(--border-color);
            padding: 20px 40px;
            box-shadow: 4px 4px 0 var(--border-color);
        }

        .score-num {
            font-size: 3.5rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .score-total {
            font-size: 1.2rem;
            font-weight: 700;
            color: #666;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 3px solid var(--border-color);
            box-shadow: var(--shadow-flat);
        }

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

        th, td {
            padding: 15px 20px;
            border: 2px solid var(--border-color);
            font-weight: 700;
        }

        th {
            background-color: var(--secondary);
            color: var(--dark);
        }

        tr:nth-child(even) td {
            background-color: var(--light);
        }

        .tag-yes {
            color: green;
            background-color: #d4edda;
            padding: 3px 8px;
            font-size: 0.85rem;
            border: 1px solid var(--border-color);
        }

        .tag-no {
            color: red;
            background-color: #f8d7da;
            padding: 3px 8px;
            font-size: 0.85rem;
            border: 1px solid var(--border-color);
        }

        /* 需求匹配与联系表单 */
        .form-section-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .form-container {
            background-color: #fff;
            border: 3px solid var(--border-color);
            padding: 40px;
            box-shadow: var(--shadow-flat);
        }

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

        .form-group label {
            display: block;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 3px solid var(--border-color);
            background: var(--light);
            font-family: inherit;
            font-weight: 700;
            font-size: 1rem;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
        }

        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml;utf8,<svg fill='black' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/><path d='M0 0h24v24H0z' fill='none'/>");
            background-repeat: no-repeat;
            background-position: right 10px center;
        }

        /* 微信客服及信息 */
        .contact-info-box {
            background-color: #fff;
            border: 3px solid var(--border-color);
            padding: 40px;
            box-shadow: var(--shadow-flat);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .qr-area {
            text-align: center;
            border: 3px dashed var(--border-color);
            padding: 20px;
            background-color: var(--light);
            margin: 20px 0;
        }

        .qr-area img {
            max-width: 180px;
            width: 100%;
            height: auto;
            border: 2px solid var(--border-color);
        }

        .info-list-items {
            list-style: none;
        }

        .info-list-items li {
            margin-bottom: 12px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        /* Token 比价参考 */
        .price-compare-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .price-card {
            background-color: #fff;
            border: 3px solid var(--border-color);
            padding: 30px 20px;
            text-align: center;
            box-shadow: var(--shadow-flat);
            position: relative;
        }

        .price-card.popular {
            background-color: var(--secondary);
        }

        .price-card.popular::before {
            content: "全网低价推荐";
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #fff;
            padding: 3px 12px;
            font-size: 0.75rem;
            font-weight: 800;
            border: 2px solid var(--border-color);
        }

        .model-name {
            font-size: 1.5rem;
            font-weight: 900;
            margin-bottom: 15px;
        }

        .price-num-display {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--primary);
            margin: 10px 0;
        }

        .price-desc {
            font-size: 0.85rem;
            color: #666;
            margin-bottom: 20px;
        }

        /* 培训版块 */
        .training-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .training-card {
            background-color: #fff;
            border: 3px solid var(--border-color);
            padding: 35px;
            box-shadow: var(--shadow-flat);
        }

        .training-card h3 {
            font-size: 1.6rem;
            margin-bottom: 15px;
            border-bottom: 3px solid var(--border-color);
            padding-bottom: 10px;
        }

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

        .cert-list li {
            padding: 10px 0;
            font-weight: 700;
            border-bottom: 1px solid #eee;
            display: flex;
            justify-content: space-between;
        }

        .cert-tag {
            background-color: var(--accent);
            padding: 1px 8px;
            font-size: 0.8rem;
            border: 1px solid var(--border-color);
        }

        /* 帮助中心、自助排查、术语百科 */
        .help-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .help-box {
            background-color: #fff;
            border: 3px solid var(--border-color);
            padding: 30px;
            box-shadow: var(--shadow-flat);
        }

        .help-box h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            color: var(--primary);
        }

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

        .help-list li {
            margin-bottom: 10px;
            padding-left: 15px;
            position: relative;
        }

        .help-list li::before {
            content: "▪";
            position: absolute;
            left: 0;
            color: var(--secondary);
        }

        /* FAQ折叠面板 */
        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 15px;
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            border: 3px solid var(--border-color);
            background-color: #fff;
            box-shadow: 3px 3px 0 var(--border-color);
        }

        .faq-question {
            padding: 20px;
            font-weight: 800;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            background-color: var(--light);
        }

        .faq-question::after {
            content: "+";
            font-size: 1.5rem;
            font-weight: 900;
        }

        .faq-item.active .faq-question::after {
            content: "-";
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease;
            font-weight: 500;
            color: #555;
        }

        .faq-item.active .faq-answer {
            padding: 20px;
            max-height: 200px;
            border-top: 3px solid var(--border-color);
        }

        /* 客户评论卡片 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .comment-card {
            background-color: #fff;
            border: 3px solid var(--border-color);
            padding: 25px;
            box-shadow: var(--shadow-flat);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .comment-text {
            font-style: italic;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 15px;
            border-top: 2px dashed #eee;
            padding-top: 15px;
        }

        .user-avatar {
            width: 45px;
            height: 45px;
            background-color: var(--secondary);
            border: 2px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
        }

        .user-meta h4 {
            font-size: 0.95rem;
        }

        .user-meta span {
            font-size: 0.75rem;
            color: #666;
        }

        /* 行业资讯 / 知识库 */
        .articles-area {
            background-color: #fff;
            border: 3px solid var(--border-color);
            padding: 40px;
            box-shadow: var(--shadow-flat);
        }

        .articles-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 25px;
        }

        .article-item {
            padding: 15px;
            border: 2px solid var(--border-color);
            background-color: var(--light);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .article-title {
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: 10px;
        }

        .article-link {
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: 700;
            text-align: right;
        }

        /* 底部与友情链接 */
        footer {
            background-color: var(--dark);
            color: #fff;
            padding: 60px 0 20px 0;
            border-top: 4px solid var(--border-color);
        }

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

        .footer-col h4 {
            font-size: 1.2rem;
            margin-bottom: 20px;
            color: var(--secondary);
            position: relative;
            display: inline-block;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 30px;
            height: 3px;
            background-color: var(--primary);
        }

        .footer-col p, .footer-col ul {
            font-size: 0.9rem;
            color: #ccc;
        }

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

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

        .footer-col ul li a {
            color: #ccc;
        }

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

        /* 友情链接专区 */
        .friendly-links {
            border-top: 1px solid #333;
            border-bottom: 1px solid #333;
            padding: 20px 0;
            margin-bottom: 20px;
            text-align: center;
        }

        .friendly-links span {
            font-weight: 700;
            margin-right: 15px;
            color: var(--accent);
        }

        .friendly-links a {
            color: #aaa;
            margin-right: 15px;
            font-size: 0.85rem;
            display: inline-block;
        }

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

        .copyright-area {
            text-align: center;
            font-size: 0.8rem;
            color: #888;
        }

        /* 浮动客服入口 */
        .floating-contact {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background-color: var(--primary);
            border: 3px solid var(--border-color);
            box-shadow: 4px 4px 0 var(--border-color);
            padding: 10px 15px;
            cursor: pointer;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.2s;
        }

        .floating-contact:hover {
            transform: translateY(-5px);
            box-shadow: 6px 6px 0 var(--border-color);
        }

        /* 移动端菜单控制及响应式 */
        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                margin-top: 0;
                padding-top: 40px;
            }
            .grid-3col, .case-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .form-section-grid, .network-grid {
                grid-template-columns: 1fr;
            }
            .price-compare-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: var(--light);
                border-bottom: 3px solid var(--border-color);
                flex-direction: column;
                padding: 20px;
                gap: 10px;
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.3rem;
            }
            .grid-3col, .case-grid, .comments-grid, .solutions-grid, .training-cards, .help-grid, .footer-grid, .articles-list {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .rating-box {
                flex-direction: column;
                text-align: center;
            }
        }