/* 基础变量与重置（多彩涂鸦风格，明亮高对比，Neo-brutalism 风格变体） */
        :root {
            --primary: #FFDE4D;
            --secondary: #FF6B8B;
            --accent: #4D96FF;
            --success: #6BCB77;
            --dark: #1A1A1A;
            --light: #F9FAFC;
            --white: #FFFFFF;
            --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --brutal-shadow: 6px 6px 0px #1A1A1A;
            --brutal-border: 3px solid #1A1A1A;
        }

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

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

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

        /* 公共组件：涂鸦感标题 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-tag {
            display: inline-block;
            background: var(--secondary);
            color: var(--white);
            font-weight: bold;
            padding: 6px 16px;
            border: var(--brutal-border);
            border-radius: 20px;
            margin-bottom: 15px;
            transform: rotate(-1.5deg);
            box-shadow: 3px 3px 0px var(--dark);
        }

        .section-title {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--dark);
            display: inline-block;
            position: relative;
            z-index: 1;
            margin-bottom: 15px;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: 5px;
            left: 0;
            width: 100%;
            height: 15px;
            background: var(--primary);
            z-index: -1;
            transform: skewX(-15deg);
        }

        /* 按钮设计 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 800;
            text-decoration: none;
            color: var(--dark);
            background: var(--primary);
            border: var(--brutal-border);
            border-radius: 8px;
            box-shadow: var(--brutal-shadow);
            transition: transform 0.1s ease, box-shadow 0.1s ease;
            cursor: pointer;
        }

        .btn:hover {
            transform: translate(3px, 3px);
            box-shadow: 3px 3px 0px var(--dark);
        }

        .btn-secondary {
            background: var(--secondary);
            color: var(--white);
        }

        .btn-accent {
            background: var(--accent);
            color: var(--white);
        }

        /* 导航栏 */
        header {
            background: var(--white);
            border-bottom: var(--brutal-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }

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

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

        .logo-area img {
            max-height: 45px;
        }

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

        .nav-menu a {
            color: var(--dark);
            text-decoration: none;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 5px 10px;
            border-radius: 4px;
            transition: all 0.2s;
        }

        .nav-menu a:hover {
            background: var(--primary);
            border: 2px solid var(--dark);
            box-shadow: 2px 2px 0px var(--dark);
        }

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

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            background: var(--primary);
            border: var(--brutal-border);
            padding: 8px 12px;
            font-weight: 800;
            cursor: pointer;
            box-shadow: 3px 3px 0px var(--dark);
        }

        /* Hero首屏（无图片设计） */
        .hero {
            background: radial-gradient(circle at 10% 20%, rgb(255, 252, 234) 0%, rgb(253, 244, 213) 90%);
            border-bottom: var(--brutal-border);
            padding: 100px 0 120px 0;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '★';
            position: absolute;
            font-size: 5rem;
            color: var(--secondary);
            top: 15%;
            left: 5%;
            opacity: 0.2;
            transform: rotate(-15deg);
        }

        .hero::after {
            content: '⚡';
            position: absolute;
            font-size: 6rem;
            color: var(--accent);
            bottom: 10%;
            right: 5%;
            opacity: 0.2;
            transform: rotate(20deg);
        }

        .hero-content {
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 5;
        }

        .hero-tag {
            background: var(--dark);
            color: var(--primary);
            padding: 8px 16px;
            font-size: 0.9rem;
            font-weight: 800;
            border-radius: 5px;
            display: inline-block;
            margin-bottom: 25px;
            border: var(--brutal-border);
            box-shadow: 4px 4px 0px var(--secondary);
        }

        .hero h1 {
            font-size: 3.5rem;
            font-weight: 900;
            line-height: 1.2;
            color: var(--dark);
            margin-bottom: 25px;
        }

        .hero h1 span {
            background: var(--primary);
            border: var(--brutal-border);
            padding: 2px 10px;
            box-shadow: 4px 4px 0px var(--dark);
            display: inline-block;
            transform: rotate(-1deg);
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 40px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.8);
            border: 2px dashed var(--dark);
            padding: 15px;
            border-radius: 8px;
        }

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

        .hero-features {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-top: 60px;
            flex-wrap: wrap;
        }

        .hero-feature-item {
            background: var(--white);
            border: var(--brutal-border);
            padding: 15px 25px;
            border-radius: 8px;
            box-shadow: 4px 4px 0px var(--dark);
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
        }

        .hero-feature-item span {
            font-size: 1.5rem;
        }

        /* 数据指标卡片 */
        .stats-section {
            padding: 50px 0;
            background: var(--white);
            border-bottom: var(--brutal-border);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
        }

        .stat-card {
            background: var(--white);
            border: var(--brutal-border);
            padding: 25px;
            border-radius: 12px;
            box-shadow: var(--brutal-shadow);
            text-align: center;
            transition: transform 0.2s;
        }

        .stat-card:hover {
            transform: translateY(-5px);
        }

        .stat-num {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--secondary);
            margin-bottom: 10px;
            position: relative;
            display: inline-block;
        }

        .stat-num::after {
            content: '+';
            font-size: 1.5rem;
            vertical-align: super;
        }

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

        /* 通用卡片布局 */
        .section-block {
            padding: 90px 0;
            border-bottom: var(--brutal-border);
        }

        .section-block:nth-child(even) {
            background: #FFFDF4;
        }

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

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
        }

        /* 卡片设计 */
        .brutal-card {
            background: var(--white);
            border: var(--brutal-border);
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--brutal-shadow);
            transition: all 0.2s;
            position: relative;
            overflow: hidden;
        }

        .brutal-card:hover {
            transform: translate(-3px, -3px);
            box-shadow: 9px 9px 0px var(--dark);
        }

        .brutal-card-header {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
        }

        .brutal-card-icon {
            font-size: 2rem;
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: var(--primary);
            border: 2px solid var(--dark);
        }

        .brutal-card h3 {
            font-size: 1.3rem;
            font-weight: 800;
        }

        .brutal-card p {
            color: #555;
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* 模型聚合流星墙效果 */
        .model-wall {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 30px;
        }

        .model-tag {
            background: var(--white);
            border: 2px solid var(--dark);
            padding: 8px 16px;
            border-radius: 8px;
            font-weight: 700;
            box-shadow: 3px 3px 0px var(--dark);
            transition: all 0.15s;
        }

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

        /* 流程步骤 */
        .steps-container {
            display: flex;
            justify-content: space-between;
            position: relative;
            gap: 20px;
            margin-top: 30px;
        }

        .step-item {
            flex: 1;
            background: var(--white);
            border: var(--brutal-border);
            padding: 25px;
            border-radius: 12px;
            box-shadow: var(--brutal-shadow);
            text-align: center;
            position: relative;
        }

        .step-num {
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 40px;
            background: var(--secondary);
            color: var(--white);
            border: 2px solid var(--dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            box-shadow: 2px 2px 0px var(--dark);
        }

        .step-title {
            font-size: 1.2rem;
            font-weight: 800;
            margin-top: 15px;
            margin-bottom: 10px;
        }

        /* 对比评测表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: var(--brutal-border);
            border-radius: 12px;
            box-shadow: var(--brutal-shadow);
            background: var(--white);
        }

        .rating-summary {
            background: var(--primary);
            padding: 25px;
            border-bottom: var(--brutal-border);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .rating-title {
            font-size: 1.5rem;
            font-weight: 900;
        }

        .rating-stars {
            font-size: 1.8rem;
            color: var(--secondary);
        }

        .rating-score {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--dark);
        }

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

        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 2px solid var(--dark);
            border-right: 2px solid var(--dark);
            font-size: 0.95rem;
        }

        .compare-table th {
            background: #f1f3f5;
            font-weight: 800;
        }

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

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

        .compare-table td.highlight-cell {
            background: rgba(255, 222, 77, 0.15);
            font-weight: 700;
        }

        .badge-yes {
            background: var(--success);
            color: var(--dark);
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: 800;
            border: 1px solid var(--dark);
        }

        /* 案例中心 */
        .case-gallery {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            margin-bottom: 40px;
        }

        .case-card {
            background: var(--white);
            border: var(--brutal-border);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--brutal-shadow);
        }

        .case-image-wrapper {
            position: relative;
            background: #eaeaea;
            border-bottom: var(--brutal-border);
            min-height: 200px;
        }

        .case-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .case-content {
            padding: 20px;
        }

        .case-tag {
            background: var(--accent);
            color: var(--white);
            padding: 4px 8px;
            font-size: 0.8rem;
            font-weight: 700;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 10px;
        }

        /* 6条用户评论卡片 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
            margin-top: 50px;
        }

        .review-card {
            background: var(--white);
            border: var(--brutal-border);
            padding: 25px;
            border-radius: 12px;
            box-shadow: var(--brutal-shadow);
            position: relative;
        }

        .review-card::before {
            content: "“";
            font-size: 4rem;
            color: var(--primary);
            position: absolute;
            top: -10px;
            left: 15px;
            font-family: Georgia, serif;
            line-height: 1;
        }

        .review-text {
            font-style: italic;
            margin-bottom: 20px;
            font-size: 0.95rem;
            color: #333;
            position: relative;
            z-index: 2;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 2px dashed #eee;
            padding-top: 15px;
        }

        .review-avatar {
            width: 40px;
            height: 40px;
            background: var(--accent);
            border-radius: 50%;
            border: 2px solid var(--dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            color: var(--white);
        }

        .review-info h4 {
            font-size: 0.95rem;
            font-weight: 800;
        }

        .review-info p {
            font-size: 0.8rem;
            color: #777;
        }

        /* 资讯/知识库列表 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .news-item {
            background: var(--white);
            border: var(--brutal-border);
            border-radius: 12px;
            padding: 25px;
            box-shadow: var(--brutal-shadow);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-title {
            font-size: 1.15rem;
            font-weight: 800;
            margin-bottom: 15px;
            color: var(--dark);
            text-decoration: none;
            line-height: 1.4;
        }

        .news-title:hover {
            color: var(--secondary);
            text-decoration: underline;
        }

        .news-meta {
            display: flex;
            justify-content: space-between;
            font-size: 0.85rem;
            color: #666;
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px dashed #ddd;
        }

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

        .faq-item {
            background: var(--white);
            border: var(--brutal-border);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 4px 4px 0px var(--dark);
            transition: transform 0.2s;
        }

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

        .faq-question::after {
            content: "＋";
            font-size: 1.2rem;
            font-weight: 900;
            transition: transform 0.2s;
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            background: #FFFDF9;
            border-top: 0px solid var(--dark);
            font-size: 0.95rem;
            color: #444;
        }

        .faq-item.active {
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0px var(--dark);
        }

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

        .faq-item.active .faq-answer {
            padding: 20px;
            max-height: 300px;
            border-top: 2px solid var(--dark);
        }

        /* 表单与需求匹配 */
        .form-section {
            background: #FFF4F7;
            border-bottom: var(--brutal-border);
        }

        .form-wrapper {
            background: var(--white);
            border: var(--brutal-border);
            border-radius: 16px;
            padding: 40px;
            box-shadow: var(--brutal-shadow);
        }

        .form-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 20px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-group-full {
            grid-column: span 2;
        }

        .form-group label {
            font-weight: 800;
            font-size: 0.95rem;
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px 16px;
            border: var(--brutal-border);
            border-radius: 8px;
            font-size: 1rem;
            outline: none;
            background: var(--light);
            transition: box-shadow 0.15s;
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            background: var(--white);
            box-shadow: 3px 3px 0px var(--primary);
        }

        /* 术语百科与排查列表 */
        .wiki-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 40px;
        }

        .wiki-block {
            background: var(--white);
            border: var(--brutal-border);
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--brutal-shadow);
        }

        .wiki-block h3 {
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 20px;
            border-bottom: 3px solid var(--dark);
            padding-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .wiki-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .wiki-list li strong {
            color: var(--secondary);
            display: block;
            margin-bottom: 5px;
        }

        /* 联系方式与二维码区块 */
        .contact-methods {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .contact-card {
            background: var(--white);
            border: var(--brutal-border);
            border-radius: 12px;
            padding: 25px;
            text-align: center;
            box-shadow: var(--brutal-shadow);
        }

        .contact-card img {
            max-width: 150px;
            border: var(--brutal-border);
            border-radius: 8px;
            margin: 15px 0;
        }

        .contact-card-icon {
            font-size: 2.2rem;
            margin-bottom: 10px;
        }

        /* 页脚与友情链接 */
        footer {
            background: var(--dark);
            color: var(--white);
            padding: 60px 0 30px 0;
            border-top: var(--brutal-border);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 15px;
        }

        .footer-brand p {
            color: #aaa;
            font-size: 0.9rem;
            max-width: 380px;
        }

        .footer-links h4 {
            font-size: 1.1rem;
            margin-bottom: 15px;
            color: var(--white);
            border-left: 4px solid var(--secondary);
            padding-left: 10px;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #ccc;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s;
        }

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

        .friend-links-area {
            border-top: 1px solid #333;
            padding-top: 25px;
            margin-top: 25px;
        }

        .friend-links-title {
            font-size: 0.9rem;
            color: #888;
            margin-bottom: 10px;
            font-weight: 700;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friend-links a {
            color: #aaa;
            text-decoration: none;
            font-size: 0.85rem;
        }

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

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: #888;
            flex-wrap: wrap;
            gap: 15px;
        }

        .ai-page-home-link {
            color: var(--primary);
            text-decoration: underline;
            font-weight: bold;
        }

        /* 浮动组件：客服面板 */
        .float-service {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background: var(--primary);
            border: var(--brutal-border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 3px 3px 0px var(--dark);
            position: relative;
        }

        .float-btn:hover {
            transform: translate(2px, 2px);
            box-shadow: 1px 1px 0px var(--dark);
        }

        .qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: var(--white);
            border: var(--brutal-border);
            border-radius: 8px;
            padding: 15px;
            box-shadow: var(--brutal-shadow);
            display: none;
            text-align: center;
            width: 180px;
        }

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

        .qr-popover p {
            font-size: 0.75rem;
            margin-top: 8px;
            color: var(--dark);
            font-weight: 700;
        }

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

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .grid-3, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem !important;
            }
            .hero-btns {
                flex-direction: column;
                align-items: stretch;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 80px;
                left: 0;
                width: 100%;
                background: var(--white);
                border-bottom: var(--brutal-border);
                padding: 20px;
                gap: 15px;
            }
            .nav-menu.show {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .grid-3, .grid-2, .reviews-grid, .stats-grid, .case-gallery, .news-grid, .wiki-grid, .contact-methods {
                grid-template-columns: 1fr;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group-full {
                grid-column: span 1;
            }
            .steps-container {
                flex-direction: column;
                gap: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }