/* CSS 样式 - 多彩涂鸦风与新粗野主义（Neo-brutalism）结合 */
        :root {
            --bg-color: #f7f6f0;
            --main-dark: #121212;
            --accent-yellow: #ffde17;
            --accent-pink: #ff4b91;
            --accent-blue: #00e5ff;
            --accent-green: #00ff66;
            --border-width: 3px;
            --shadow-offset: 6px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

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

        /* 通用排版 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
        }

        .section-padding {
            padding: 80px 0;
            border-bottom: var(--border-width) solid var(--main-dark);
        }

        /* 涂鸦风标题 */
        .section-title {
            font-size: 2.5rem;
            font-weight: 900;
            text-transform: uppercase;
            margin-bottom: 50px;
            display: inline-block;
            position: relative;
            background: var(--accent-yellow);
            padding: 10px 20px;
            border: var(--border-width) solid var(--main-dark);
            box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--main-dark);
            transform: rotate(-1.5deg);
        }

        .section-title::after {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            left: -10px;
            top: 10px;
            border: 2px dashed var(--accent-pink);
            z-index: -1;
            pointer-events: none;
        }

        /* 粗野主义卡片 */
        .brutal-card {
            background: #ffffff;
            border: var(--border-width) solid var(--main-dark);
            padding: 30px;
            box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--main-dark);
            transition: all 0.2s ease;
            position: relative;
        }

        .brutal-card:hover {
            transform: translate(-4px, -4px);
            box-shadow: calc(var(--shadow-offset) + 4px) calc(var(--shadow-offset) + 4px) 0 var(--main-dark);
        }

        /* 按钮样式 */
        .btn-brutal {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 15px 30px;
            font-size: 1.1rem;
            font-weight: bold;
            text-decoration: none;
            color: var(--main-dark);
            background: var(--accent-pink);
            border: var(--border-width) solid var(--main-dark);
            box-shadow: 4px 4px 0 var(--main-dark);
            cursor: pointer;
            transition: all 0.15s ease;
        }

        .btn-brutal:hover {
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0 var(--main-dark);
            background: var(--accent-yellow);
        }

        .btn-brutal:active {
            transform: translate(2px, 2px);
            box-shadow: 2px 2px 0 var(--main-dark);
        }

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

        /* 导航栏 */
        .header-nav {
            background: #ffffff;
            border-bottom: var(--border-width) solid var(--main-dark);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }

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

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

        .brand-logo img {
            height: 45px;
            object-fit: contain;
        }

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

        .nav-menu a {
            text-decoration: none;
            color: var(--main-dark);
            font-weight: bold;
            font-size: 1rem;
            padding: 5px 10px;
            border: 2px solid transparent;
            transition: all 0.2s;
        }

        .nav-menu a:hover {
            background: var(--accent-yellow);
            border-color: var(--main-dark);
        }

        .burger-menu {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            border: 2px solid #000;
            padding: 2px 8px;
            background: var(--accent-blue);
        }

        /* 首屏 (Hero) - 严禁出现图片 */
        .hero-section {
            background: radial-gradient(circle at 80% 20%, var(--accent-blue) 0%, transparent 40%),
                        radial-gradient(circle at 10% 80%, var(--accent-pink) 0%, transparent 35%),
                        #ffffff;
            padding: 100px 0;
            border-bottom: var(--border-width) solid var(--main-dark);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(var(--main-dark) 1.5px, transparent 1.5px);
            background-size: 24px 24px;
            opacity: 0.15;
            pointer-events: none;
        }

        .hero-content {
            max-width: 800px;
            position: relative;
            z-index: 10;
        }

        .hero-badge {
            background: var(--accent-green);
            color: var(--main-dark);
            padding: 6px 12px;
            font-weight: bold;
            border: 2px solid var(--main-dark);
            display: inline-block;
            transform: rotate(-2deg);
            margin-bottom: 25px;
            box-shadow: 2px 2px 0 var(--main-dark);
        }

        .hero-title {
            font-size: 3.5rem;
            line-height: 1.2;
            font-weight: 900;
            margin-bottom: 30px;
            color: var(--main-dark);
        }

        .hero-title span {
            background: linear-gradient(90deg, var(--accent-pink), var(--accent-yellow));
            -webkit-background-clip: text;
            color: transparent;
            text-shadow: 2px 2px 0px var(--main-dark);
        }

        .hero-desc {
            font-size: 1.25rem;
            margin-bottom: 40px;
            color: #333333;
            max-width: 650px;
            background: rgba(255,255,255,0.85);
            padding: 15px;
            border: 2px solid var(--main-dark);
            box-shadow: 4px 4px 0 var(--main-dark);
        }

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

        /* 装饰型涂鸦边框与图形 */
        .doodle-shape {
            position: absolute;
            border: 2px solid var(--main-dark);
            border-radius: 50%;
            background: var(--accent-yellow);
            opacity: 0.8;
            pointer-events: none;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
            margin-top: -50px;
            position: relative;
            z-index: 20;
        }

        .stat-card {
            background: #ffffff;
            border: var(--border-width) solid var(--main-dark);
            padding: 25px;
            text-align: center;
            box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--main-dark);
        }

        .stat-num {
            font-size: 3rem;
            font-weight: 900;
            color: var(--accent-pink);
            margin-bottom: 10px;
            text-shadow: 2px 2px 0 var(--main-dark);
        }

        .stat-label {
            font-weight: bold;
            color: #555;
        }

        /* 服务能力与功能场景 */
        .services-grid, .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

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

        .card-title {
            font-size: 1.5rem;
            font-weight: bold;
            margin-bottom: 15px;
        }

        /* 流程步骤 */
        .step-timeline {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }

        .step-item {
            position: relative;
            background: #ffffff;
            border: var(--border-width) solid var(--main-dark);
            padding: 30px;
            box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--main-dark);
        }

        .step-num {
            position: absolute;
            top: -20px;
            left: 20px;
            background: var(--accent-blue);
            color: var(--main-dark);
            font-weight: 900;
            font-size: 1.25rem;
            padding: 5px 15px;
            border: 2px solid var(--main-dark);
            box-shadow: 2px 2px 0 var(--main-dark);
        }

        /* 对比评测表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: var(--border-width) solid var(--main-dark);
            box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--main-dark);
            background: #fff;
        }

        .brutal-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

        .brutal-table th, .brutal-table td {
            padding: 16px 20px;
            border: 2px solid var(--main-dark);
        }

        .brutal-table th {
            background: var(--accent-yellow);
            font-weight: bold;
            text-transform: uppercase;
        }

        .brutal-table tr:nth-child(even) {
            background-color: #fcfcfc;
        }

        .badge-star {
            background: var(--accent-pink);
            color: white;
            padding: 3px 8px;
            font-weight: bold;
            border: 1px solid var(--main-dark);
        }

        /* 词云与标签区 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-top: 20px;
        }

        .tag-item {
            background: #fff;
            border: 2px solid var(--main-dark);
            padding: 8px 16px;
            font-weight: bold;
            box-shadow: 3px 3px 0 var(--main-dark);
            transition: all 0.15s;
        }

        .tag-item:hover {
            transform: translate(-2px, -2px);
            box-shadow: 5px 5px 0 var(--main-dark);
            background: var(--accent-green);
        }

        /* FAQ折叠面板 */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .faq-item {
            background: #ffffff;
            border: var(--border-width) solid var(--main-dark);
            box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--main-dark);
        }

        .faq-header {
            padding: 20px;
            font-weight: bold;
            font-size: 1.15rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #ffffff;
            transition: background-color 0.2s;
        }

        .faq-header:hover {
            background: #fbfbfb;
        }

        .faq-icon {
            font-size: 1.5rem;
            transition: transform 0.2s;
        }

        .faq-body {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.25s ease-out, padding 0.25s ease-out;
            border-top: 0 solid var(--main-dark);
            color: #444;
        }

        .faq-item.active .faq-header {
            background: var(--accent-yellow);
        }

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

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

        /* 客户评论卡片 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .comment-card {
            background: #ffffff;
            border: var(--border-width) solid var(--main-dark);
            padding: 30px;
            box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--main-dark);
        }

        .comment-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 20px;
            font-size: 0.9rem;
            color: #666;
            border-top: 2px dashed #eee;
            padding-top: 15px;
        }

        /* 表单与需求匹配 */
        .form-section-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .form-info-box {
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .brutal-form {
            background: #ffffff;
            border: var(--border-width) solid var(--main-dark);
            padding: 40px;
            box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--main-dark);
        }

        .form-group {
            margin-bottom: 25px;
        }

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

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid var(--main-dark);
            font-size: 1rem;
            box-shadow: 3px 3px 0 var(--main-dark);
            outline: none;
        }

        .form-control:focus {
            box-shadow: 5px 5px 0 var(--main-dark);
            background: #fffde7;
        }

        /* 图片与案例区域 */
        .case-gallery {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .case-card {
            background: #fff;
            border: var(--border-width) solid var(--main-dark);
            box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--main-dark);
            overflow: hidden;
        }

        .case-img-wrap {
            border-bottom: var(--border-width) solid var(--main-dark);
            background: #eee;
            aspect-ratio: 16/9;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .case-info {
            padding: 20px;
        }

        /* 资讯文章列表 */
        .article-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .article-card {
            background: #ffffff;
            border: var(--border-width) solid var(--main-dark);
            padding: 25px;
            box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--main-dark);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .article-link {
            color: var(--main-dark);
            font-weight: bold;
            text-decoration: underline;
            margin-top: 15px;
            display: inline-block;
        }

        /* 页脚 */
        .footer-brutal {
            background: #ffffff;
            border-top: var(--border-width) solid var(--main-dark);
            padding: 60px 0 30px;
        }

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

        .footer-logo img {
            max-height: 50px;
            margin-bottom: 20px;
        }

        .footer-col h4 {
            font-weight: bold;
            font-size: 1.1rem;
            margin-bottom: 20px;
            text-transform: uppercase;
            background: var(--accent-blue);
            padding: 4px 8px;
            display: inline-block;
            border: 2px solid var(--main-dark);
        }

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

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

        .footer-col ul a {
            text-decoration: none;
            color: #555;
            transition: color 0.15s;
        }

        .footer-col ul a:hover {
            color: var(--accent-pink);
            text-decoration: underline;
        }

        .footer-bottom {
            border-top: 2px solid var(--main-dark);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

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

        .friend-links a {
            color: #666;
            text-decoration: none;
            font-size: 0.9rem;
        }

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

        /* 浮动客服 */
        .float-service {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background: var(--accent-yellow);
            border: var(--border-width) solid var(--main-dark);
            box-shadow: 4px 4px 0 var(--main-dark);
            padding: 15px;
            cursor: pointer;
            text-align: center;
            font-weight: bold;
            transition: all 0.2s;
        }

        .float-service:hover {
            transform: translate(-3px, -3px);
            box-shadow: 7px 7px 0 var(--main-dark);
        }

        .kefu-popover {
            position: absolute;
            bottom: 80px;
            right: 0;
            background: #fff;
            border: var(--border-width) solid var(--main-dark);
            box-shadow: 5px 5px 0 var(--main-dark);
            padding: 20px;
            width: 220px;
            display: none;
            text-align: center;
        }

        .kefu-popover img {
            width: 100%;
            height: auto;
            border: 2px solid var(--main-dark);
            margin-bottom: 10px;
        }

        .float-service:hover .kefu-popover {
            display: block;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .form-section-layout {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #fff;
                border-bottom: var(--border-width) solid var(--main-dark);
                padding: 20px;
                box-shadow: 0 4px 10px rgba(0,0,0,0.1);
            }

            .nav-menu.active {
                display: flex;
            }

            .burger-menu {
                display: block;
            }

            .hero-title {
                font-size: 2.2rem;
            }

            .section-title {
                font-size: 1.8rem;
            }
        }