/* 基础变量与重置（多彩涂鸦风） */
        :root {
            --primary-bg: #FCFBFA;
            --dark-color: #1A1A1A;
            --accent-yellow: #FFDE47;
            --accent-pink: #FF76CE;
            --accent-blue: #94FFD8;
            --accent-purple: #A3D8F4;
            --container-width: 1200px;
            --border-style: 3px solid #1A1A1A;
            --box-shadow-style: 6px 6px 0px #1A1A1A;
            --box-shadow-hover: 10px 10px 0px #1A1A1A;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
            background-color: var(--primary-bg);
            color: var(--dark-color);
            line-height: 1.6;
            overflow-x: hidden;
            background-image: 
                radial-gradient(var(--accent-purple) 15%, transparent 16%),
                radial-gradient(var(--accent-pink) 15%, transparent 16%);
            background-size: 60px 60px;
            background-position: 0 0, 30px 30px;
            background-attachment: fixed;
            opacity: 0.98;
        }

        /* 通用容器与组件 */
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        section {
            padding: 80px 0;
            position: relative;
        }

        /* 涂鸦标题 */
        .section-title {
            font-size: 2.2rem;
            font-weight: 900;
            text-align: center;
            margin-bottom: 48px;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .section-title span {
            background-color: var(--accent-yellow);
            padding: 8px 24px;
            border: var(--border-style);
            box-shadow: var(--box-shadow-style);
            transform: rotate(-1.5deg);
            display: inline-block;
        }

        .section-title.pink span {
            background-color: var(--accent-pink);
            transform: rotate(1deg);
        }

        .section-title.blue span {
            background-color: var(--accent-blue);
            transform: rotate(-1deg);
        }

        .section-title.purple span {
            background-color: var(--accent-purple);
            transform: rotate(1.5deg);
        }

        /* 粗框卡片 */
        .sketch-card {
            background-color: #FFFFFF;
            border: var(--border-style);
            box-shadow: var(--box-shadow-style);
            border-radius: 12px;
            padding: 30px;
            transition: all 0.25s ease;
            position: relative;
            overflow: hidden;
        }

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

        /* 粗框按钮 */
        .sketch-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark-color);
            background-color: var(--accent-yellow);
            border: var(--border-style);
            box-shadow: 4px 4px 0px #1A1A1A;
            border-radius: 8px;
            cursor: pointer;
            text-decoration: none;
            transition: all 0.2s ease;
        }

        .sketch-btn:hover {
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0px #1A1A1A;
            background-color: var(--accent-pink);
        }

        .sketch-btn:active {
            transform: translate(2px, 2px);
            box-shadow: 1px 1px 0px #1A1A1A;
        }

        .sketch-btn.secondary {
            background-color: var(--accent-blue);
        }

        .sketch-btn.secondary:hover {
            background-color: var(--accent-purple);
        }

        /* 导航栏 */
        header {
            background-color: #FFFFFF;
            border-bottom: var(--border-style);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 12px 0;
        }

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

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ai-page-logo {
            height: 48px;
            width: auto;
            border: 2px solid var(--dark-color);
            border-radius: 6px;
        }

        .brand-name {
            font-size: 1.5rem;
            font-weight: 900;
            letter-spacing: -0.5px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--dark-color);
            font-weight: 700;
            font-size: 0.95rem;
            padding: 6px 12px;
            border-radius: 6px;
            transition: background 0.2s;
        }

        .nav-links a:hover {
            background-color: var(--accent-purple);
        }

        .nav-btn {
            background-color: var(--accent-yellow);
            border: 2px solid var(--dark-color);
            box-shadow: 3px 3px 0px var(--dark-color);
            font-weight: 700;
            font-size: 0.95rem;
            padding: 8px 16px;
            border-radius: 6px;
            text-decoration: none;
            color: var(--dark-color);
            display: inline-block;
            transition: all 0.2s;
        }

        .nav-btn:hover {
            transform: translate(-1px, -1px);
            box-shadow: 4px 4px 0px var(--dark-color);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: 2px solid var(--dark-color);
            padding: 6px;
            border-radius: 4px;
            background: var(--accent-blue);
        }

        .menu-toggle span {
            display: block;
            width: 20px;
            height: 3px;
            background-color: var(--dark-color);
        }

        /* 1. Hero 首屏 - 无任何图片 */
        .hero {
            background-color: #FFFFFF;
            border-bottom: var(--border-style);
            padding: 100px 0 120px 0;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background-color: var(--accent-pink);
            filter: blur(80px);
            top: -100px;
            right: -100px;
            z-index: 1;
            opacity: 0.4;
        }

        .hero::after {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background-color: var(--accent-yellow);
            filter: blur(80px);
            bottom: -150px;
            left: -100px;
            z-index: 1;
            opacity: 0.4;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            background-color: var(--accent-blue);
            color: var(--dark-color);
            font-weight: 800;
            font-size: 0.95rem;
            padding: 6px 16px;
            border: var(--border-style);
            box-shadow: 3px 3px 0px var(--dark-color);
            transform: rotate(-1deg);
            margin-bottom: 24px;
        }

        h1.hero-title {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.25;
            color: var(--dark-color);
            margin-bottom: 24px;
        }

        h1.hero-title span {
            background: linear-gradient(120deg, var(--accent-yellow) 0%, var(--accent-pink) 100%);
            padding: 2px 10px;
            border-radius: 4px;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: #4A4A4A;
            margin-bottom: 40px;
            font-weight: 500;
            line-height: 1.8;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        /* 标签栏 - 跑马灯效果 */
        .marquee-container {
            border-top: var(--border-style);
            border-bottom: var(--border-style);
            background-color: var(--accent-yellow);
            padding: 12px 0;
            overflow: hidden;
            white-space: nowrap;
            position: relative;
        }

        .marquee-inner {
            display: inline-block;
            animation: marquee 25s linear infinite;
        }

        .marquee-item {
            display: inline-block;
            font-weight: 900;
            font-size: 1.1rem;
            margin-right: 40px;
            color: var(--dark-color);
        }

        .marquee-item span {
            background-color: #FFFFFF;
            border: 1px solid var(--dark-color);
            padding: 2px 8px;
            border-radius: 4px;
            margin-right: 8px;
        }

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

        /* 2. 关于我们 与 平台介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
        }

        .about-text h3::after {
            content: '';
            position: absolute;
            width: 100%;
            height: 12px;
            background-color: var(--accent-blue);
            bottom: 2px;
            left: 0;
            z-index: -1;
        }

        .about-text p {
            font-size: 1.05rem;
            color: #4A4A4A;
            margin-bottom: 20px;
            text-align: justify;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .about-feat-card {
            background: #FFFFFF;
            border: var(--border-style);
            padding: 20px;
            border-radius: 8px;
            box-shadow: 4px 4px 0px var(--dark-color);
        }

        .about-feat-card h4 {
            font-size: 1.1rem;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--dark-color);
        }

        .about-feat-card p {
            font-size: 0.9rem;
            margin: 0;
        }

        /* 3. 全平台AIGC服务 & 4. 一站式AIGC制作 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .service-icon {
            font-size: 2.5rem;
            background-color: var(--accent-yellow);
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px solid var(--dark-color);
            border-radius: 12px;
            margin-bottom: 20px;
            box-shadow: 3px 3px 0px var(--dark-color);
        }

        .service-card.pink .service-icon {
            background-color: var(--accent-pink);
        }

        .service-card.blue .service-icon {
            background-color: var(--accent-blue);
        }

        .service-card.purple .service-icon {
            background-color: var(--accent-purple);
        }

        .service-card h3 {
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 0.95rem;
            color: #555555;
            margin-bottom: 20px;
        }

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

        .service-tags span {
            background-color: #F0F0F0;
            border: 1px solid var(--dark-color);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 4px;
        }

        /* 5. 全行业解决方案 & 支持平台 */
        .solutions {
            background-color: #FFFFFF;
            border-top: var(--border-style);
            border-bottom: var(--border-style);
        }

        .models-marquee {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 40px;
            max-width: 1000px;
            margin-left: auto;
            margin-right: auto;
        }

        .model-tag {
            background-color: #FFFFFF;
            border: var(--border-style);
            padding: 6px 16px;
            font-weight: 800;
            font-size: 0.9rem;
            border-radius: 30px;
            box-shadow: 3px 3px 0px var(--dark-color);
            transition: all 0.2s;
        }

        .model-tag:hover {
            transform: translateY(-2px);
            box-shadow: 5px 5px 0px var(--dark-color);
            background-color: var(--accent-yellow);
        }

        .solution-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
            margin-bottom: 40px;
        }

        .sol-card {
            border: var(--border-style);
            padding: 24px;
            background-color: #FFFFFF;
            border-radius: 12px;
            box-shadow: var(--box-shadow-style);
        }

        .sol-card h4 {
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 12px;
            background-color: var(--accent-purple);
            display: inline-block;
            padding: 2px 8px;
            border: 1px solid var(--dark-color);
            border-radius: 4px;
        }

        .sol-card p {
            font-size: 0.9rem;
            color: #555555;
        }

        /* 6. 全国服务网络 */
        .network-section {
            background: var(--accent-purple);
            border-bottom: var(--border-style);
        }

        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .network-nodes {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .node-card {
            background-color: #FFFFFF;
            border: var(--border-style);
            padding: 16px;
            border-radius: 8px;
            box-shadow: 3px 3px 0px var(--dark-color);
        }

        .node-card h4 {
            font-size: 1.1rem;
            font-weight: 800;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .node-card h4::before {
            content: '📍';
        }

        .node-card p {
            font-size: 0.85rem;
            color: #666;
            margin: 0;
        }

        /* 7. 标准化AIGC流程 & 8. 技术标准 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }

        .process-step {
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--accent-pink);
            border: var(--border-style);
            box-shadow: 3px 3px 0px var(--dark-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 900;
            margin: 0 auto 16px auto;
        }

        .process-step:nth-child(even) .step-num {
            background-color: var(--accent-yellow);
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 0.8rem;
            color: #666;
        }

        /* 9. 客户案例中心 */
        .cases-section {
            background-color: #FFFFFF;
            border-top: var(--border-style);
            border-bottom: var(--border-style);
        }

        .case-gallery {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-bottom: 40px;
        }

        .case-image-wrap {
            border: var(--border-style);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--box-shadow-style);
            background-color: #FFFFFF;
        }

        .case-image-wrap img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .case-image-wrap:hover img {
            transform: scale(1.02);
        }

        .case-meta {
            padding: 20px;
            border-top: var(--border-style);
            background-color: #FFFFFF;
        }

        .case-meta h4 {
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .case-meta p {
            font-size: 0.9rem;
            color: #666;
            margin: 0;
        }

        /* 素材图栅格 */
        .material-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 20px;
            margin-top: 40px;
        }

        .material-item {
            border: var(--border-style);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--box-shadow-style);
            position: relative;
        }

        .material-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .material-label {
            position: absolute;
            bottom: 12px;
            left: 12px;
            background-color: var(--accent-yellow);
            color: var(--dark-color);
            padding: 4px 10px;
            font-weight: 800;
            font-size: 0.8rem;
            border: 2px solid var(--dark-color);
            box-shadow: 2px 2px 0px var(--dark-color);
        }

        /* 10. 对比评测 */
        .comparison-table-wrap {
            overflow-x: auto;
            border: var(--border-style);
            box-shadow: var(--box-shadow-style);
            border-radius: 12px;
            margin-top: 30px;
            background-color: #FFFFFF;
        }

        table.comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

        table.comparison-table th, table.comparison-table td {
            padding: 16px 20px;
            border-bottom: 2px solid var(--dark-color);
            border-right: 2px solid var(--dark-color);
            font-weight: 700;
        }

        table.comparison-table th {
            background-color: var(--accent-yellow);
            color: var(--dark-color);
            font-size: 1rem;
            font-weight: 900;
        }

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

        table.comparison-table th:last-child, table.comparison-table td:last-child {
            border-right: none;
        }

        table.comparison-table tr.highlight {
            background-color: rgba(148, 255, 216, 0.3);
        }

        .badge-star {
            color: #FF5B00;
            font-size: 1.2rem;
        }

        /* 6条用户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .review-card {
            background: #FFFFFF;
            border: var(--border-style);
            box-shadow: var(--box-shadow-style);
            border-radius: 8px;
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-text {
            font-size: 0.95rem;
            color: #333;
            margin-bottom: 20px;
            font-style: italic;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 2px dashed #EEE;
            padding-top: 16px;
        }

        .user-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background-color: var(--accent-blue);
            border: 2px solid var(--dark-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.1rem;
        }

        .review-card:nth-child(even) .user-avatar {
            background-color: var(--accent-pink);
        }

        .user-info h5 {
            font-size: 0.95rem;
            font-weight: 800;
            margin-bottom: 2px;
        }

        .user-info p {
            font-size: 0.8rem;
            color: #777;
            margin: 0;
        }

        /* 11. 智能需求匹配 + 20. 联系我们 + 21. 加盟代理 */
        .form-section {
            background: var(--accent-yellow);
            border-top: var(--border-style);
            border-bottom: var(--border-style);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
        }

        .form-wrap {
            background-color: #FFFFFF;
            border: var(--border-style);
            box-shadow: var(--box-shadow-style);
            border-radius: 12px;
            padding: 30px;
        }

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

        .form-group label {
            display: block;
            font-weight: 800;
            margin-bottom: 8px;
            font-size: 0.95rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: var(--border-style);
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            background-color: #FCFBFA;
        }

        .form-control:focus {
            outline: none;
            background-color: #FFFFFF;
            box-shadow: 3px 3px 0px var(--dark-color);
        }

        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 12px center;
        }

        .contact-info-panel {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .agent-card {
            background-color: #FFFFFF;
            border: var(--border-style);
            box-shadow: var(--box-shadow-style);
            padding: 24px;
            border-radius: 8px;
            margin-bottom: 24px;
        }

        .agent-card h4 {
            font-size: 1.3rem;
            font-weight: 900;
            color: var(--dark-color);
            margin-bottom: 12px;
            display: inline-block;
            background-color: var(--accent-pink);
            padding: 2px 8px;
            border: 2px solid var(--dark-color);
        }

        .contact-details {
            background-color: #FFFFFF;
            border: var(--border-style);
            box-shadow: var(--box-shadow-style);
            padding: 24px;
            border-radius: 8px;
        }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
            font-weight: 700;
        }

        .contact-item:last-child {
            margin-bottom: 0;
        }

        /* 12. Token比价参考 */
        .token-pricing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .token-card {
            background-color: #FFFFFF;
            border: var(--border-style);
            border-radius: 8px;
            padding: 20px;
            box-shadow: 4px 4px 0px var(--dark-color);
            text-align: center;
        }

        .token-card h4 {
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .token-price {
            font-size: 1.6rem;
            font-weight: 900;
            color: #FF5B00;
            margin-bottom: 6px;
        }

        .token-price span {
            font-size: 0.8rem;
            color: #777;
        }

        /* 13. 职业技术培训 & 14. 人工智能培训 */
        .training-section {
            background-color: #FFFFFF;
            border-bottom: var(--border-style);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }

        .training-card {
            background: #FFFFFF;
            border: var(--border-style);
            border-radius: 8px;
            padding: 20px;
            box-shadow: var(--box-shadow-style);
            text-align: center;
            transition: transform 0.2s;
        }

        .training-card:hover {
            transform: scale(1.03);
        }

        .cert-icon {
            font-size: 2.2rem;
            margin-bottom: 12px;
        }

        .training-card h4 {
            font-size: 1.1rem;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--dark-color);
        }

        .training-card p {
            font-size: 0.8rem;
            color: #666;
            margin: 0;
        }

        /* 15. 帮助中心 + 17. 自助排查 + 18. 术语百科 + 19. 行业资讯 */
        .help-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
        }

        .trouble-card {
            background-color: #FFFFFF;
            border: var(--border-style);
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--box-shadow-style);
        }

        .trouble-steps {
            margin-top: 20px;
        }

        .trouble-item {
            display: flex;
            gap: 16px;
            margin-bottom: 16px;
        }

        .trouble-num {
            background-color: var(--accent-pink);
            border: 2px solid var(--dark-color);
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .trouble-detail h5 {
            font-size: 1rem;
            font-weight: 800;
            margin-bottom: 4px;
        }

        .trouble-detail p {
            font-size: 0.85rem;
            color: #666;
            margin: 0;
        }

        .articles-list {
            list-style: none;
            margin-top: 20px;
        }

        .articles-list li {
            margin-bottom: 16px;
            padding-bottom: 16px;
            border-bottom: 2px dashed #E0E0E0;
        }

        .articles-list li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }

        .articles-list a {
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 800;
            font-size: 0.95rem;
            transition: color 0.2s;
        }

        .articles-list a:hover {
            color: var(--accent-pink);
        }

        /* 16. 常见用户问题 FAQ */
        .faq-container {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: #FFFFFF;
            border: var(--border-style);
            margin-bottom: 16px;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 4px 4px 0px var(--dark-color);
        }

        .faq-question {
            padding: 20px;
            font-size: 1.1rem;
            font-weight: 800;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: #FFFFFF;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: 900;
            transition: transform 0.25s;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: #FCFBFA;
            border-top: 0 solid var(--dark-color);
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            border-top: 2px solid var(--dark-color);
        }

        .faq-answer p {
            padding: 20px;
            font-size: 0.95rem;
            color: #4A4A4A;
            margin: 0;
        }

        /* 浮动客服 & 扫码框 */
        .float-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 99;
            background-color: var(--accent-pink);
            border: var(--border-style);
            box-shadow: 4px 4px 0px var(--dark-color);
            border-radius: 50%;
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 1.8rem;
            transition: all 0.2s;
        }

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

        .qr-popup {
            position: absolute;
            bottom: 75px;
            right: 0;
            background: #FFFFFF;
            border: var(--border-style);
            box-shadow: var(--box-shadow-style);
            border-radius: 8px;
            padding: 16px;
            display: none;
            width: 180px;
            text-align: center;
        }

        .qr-popup img {
            width: 100%;
            height: auto;
            border: 1px solid var(--dark-color);
            margin-bottom: 8px;
        }

        .qr-popup p {
            font-size: 0.8rem;
            font-weight: 800;
            margin: 0;
        }

        /* 友情链接与页脚 */
        footer {
            background-color: #FFFFFF;
            border-top: var(--border-style);
            padding: 48px 0;
        }

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

        .footer-info h4 {
            font-size: 1.3rem;
            font-weight: 900;
            margin-bottom: 16px;
        }

        .footer-info p {
            font-size: 0.9rem;
            color: #666;
            margin-bottom: 8px;
        }

        .footer-links h5 {
            font-size: 1.1rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

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

        .footer-links ul li {
            margin-bottom: 8px;
        }

        .footer-links ul li a {
            color: #555;
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 700;
        }

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

        .friend-links-area {
            border-top: 2px dashed var(--dark-color);
            padding-top: 24px;
            margin-top: 24px;
        }

        .friend-links-area h5 {
            font-size: 1rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .friend-links-list {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .friend-links-list a {
            color: #555;
            text-decoration: none;
            font-size: 0.85rem;
            font-weight: 700;
            background: #F3F3F3;
            padding: 4px 10px;
            border: 1px solid var(--dark-color);
            border-radius: 4px;
        }

        .friend-links-list a:hover {
            background-color: var(--accent-yellow);
        }

        .copyright-bar {
            text-align: center;
            border-top: var(--border-style);
            padding-top: 24px;
            font-size: 0.85rem;
            color: #777;
            font-weight: 700;
        }

        /* 移动端响应式 */
        @media (max-width: 992px) {
            .about-grid, .network-grid, .form-grid, .help-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: #FFFFFF;
                border-bottom: var(--border-style);
                padding: 20px;
                gap: 16px;
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            h1.hero-title {
                font-size: 2.2rem;
            }
        }