/* 根变量及撞色风格定义 */
        :root {
            --primary: #2563eb;       /* 科技宝蓝 */
            --primary-hover: #1d4ed8;
            --accent: #f59e0b;        /* 活力明黄 */
            --accent-pink: #ec4899;   /* 艳丽粉红 */
            --dark: #0f172a;          /* 深灰黑（主字色） */
            --light: #f8fafc;         /* 浅色基底 */
            --white: #ffffff;
            --border: #e2e8f0;
            --text-muted: #64748b;
            --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
            --shadow-md: 0 8px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 32px rgba(0,0,0,0.12);
            --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        /* 基础样式复位 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: var(--font);
            scroll-behavior: smooth;
        }

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

        /* 主容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航栏 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            border-bottom: 2px solid var(--dark);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(10px);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

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

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

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

        .nav-menu a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 600;
            font-size: 14px;
            padding: 6px 12px;
            border-radius: 4px;
            transition: all 0.2s ease;
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            font-weight: 700;
            text-decoration: none;
            border-radius: 4px;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            cursor: pointer;
            border: 2px solid var(--dark);
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--white);
            box-shadow: 3px 3px 0 var(--dark);
        }

        .btn-primary:hover {
            transform: translate(-2px, -2px);
            box-shadow: 5px 5px 0 var(--dark);
        }

        .btn-accent {
            background-color: var(--accent);
            color: var(--dark);
            box-shadow: 3px 3px 0 var(--dark);
        }

        .btn-accent:hover {
            transform: translate(-2px, -2px);
            box-shadow: 5px 5px 0 var(--dark);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--dark);
        }

        /* Hero首屏 - 严禁出现任何图片，通过明艳撞色和网格构筑科技感 */
        .hero {
            background: linear-gradient(135deg, #eff6ff 0%, #fae8ff 100%);
            padding: 100px 0 80px 0;
            border-bottom: 2px solid var(--dark);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(236,72,153,0.15) 0%, transparent 70%);
            top: -50px;
            right: -50px;
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: clamp(32px, 5vw, 48px);
            line-height: 1.2;
            color: var(--dark);
            margin-bottom: 20px;
            font-weight: 900;
        }

        .hero h1 span {
            background: linear-gradient(90deg, var(--primary), var(--accent-pink));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 36px;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
            margin-top: 20px;
        }

        .stat-card {
            background: var(--white);
            border: 2px solid var(--dark);
            padding: 20px;
            border-radius: 4px;
            text-align: center;
            box-shadow: 4px 4px 0 var(--dark);
            transition: transform 0.2s;
        }

        .stat-card:hover {
            transform: translateY(-4px);
        }

        .stat-num {
            font-size: 32px;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .stat-num span {
            color: var(--accent-pink);
        }

        .stat-label {
            font-size: 14px;
            color: var(--dark);
            font-weight: 700;
        }

        /* 通用区块设置 */
        section {
            padding: 80px 0;
            border-bottom: 2px solid var(--dark);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            display: inline-block;
            position: relative;
            margin-bottom: 12px;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 4px;
            background-color: var(--accent);
            border: 1px solid var(--dark);
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 600px;
            margin: 12px auto 0;
        }

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

        .about-text h3 {
            font-size: 24px;
            margin-bottom: 16px;
            font-weight: 800;
        }

        .about-text p {
            margin-bottom: 16px;
            color: var(--dark);
        }

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

        .features-list li {
            margin-bottom: 12px;
            padding-left: 28px;
            position: relative;
            font-weight: 600;
        }

        .features-list li::before {
            content: "✦";
            position: absolute;
            left: 0;
            color: var(--accent-pink);
            font-weight: 900;
        }

        .about-graphic {
            background-color: var(--accent);
            border: 2px solid var(--dark);
            border-radius: 4px;
            padding: 40px;
            box-shadow: 8px 8px 0 var(--dark);
        }

        .graphic-inner {
            background-color: var(--white);
            border: 2px solid var(--dark);
            padding: 24px;
            border-radius: 4px;
        }

        /* AIGC 服务卡片 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background: var(--white);
            border: 2px solid var(--dark);
            border-radius: 4px;
            padding: 32px;
            box-shadow: 4px 4px 0 var(--dark);
            transition: all 0.2s;
            position: relative;
            overflow: hidden;
        }

        .service-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 8px;
            height: 100%;
            background-color: var(--primary);
        }

        .service-card:nth-child(even)::after {
            background-color: var(--accent-pink);
        }

        .service-card:hover {
            transform: translate(-4px, -4px);
            box-shadow: 8px 8px 0 var(--dark);
        }

        .service-icon {
            font-size: 36px;
            margin-bottom: 16px;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
            font-weight: 800;
        }

        /* 标签云样式，显示支持模型 */
        .model-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .tag {
            background: var(--light);
            border: 1px solid var(--dark);
            padding: 4px 10px;
            font-size: 11px;
            font-weight: 700;
            border-radius: 2px;
            color: var(--dark);
        }

        /* 解决方案板块 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .solution-card {
            background: var(--white);
            border: 2px solid var(--dark);
            box-shadow: 6px 6px 0 var(--dark);
            border-radius: 4px;
            padding: 24px;
        }

        .solution-card h3 {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 12px;
            border-bottom: 2px dashed var(--border);
            padding-bottom: 12px;
        }

        /* 服务网络与流程步骤 */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .flow-step {
            background: var(--white);
            border: 2px solid var(--dark);
            padding: 24px;
            border-radius: 4px;
            position: relative;
            box-shadow: 4px 4px 0 var(--dark);
        }

        .step-num {
            position: absolute;
            top: -15px;
            right: 15px;
            background: var(--accent);
            border: 2px solid var(--dark);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 18px;
        }

        /* 案例中心 - 素材图展示 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .case-card {
            background: var(--white);
            border: 2px solid var(--dark);
            border-radius: 4px;
            overflow: hidden;
            box-shadow: 6px 6px 0 var(--dark);
        }

        .case-img-wrap {
            border-bottom: 2px solid var(--dark);
            background-color: var(--light);
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
        }

        .case-img-wrap.square {
            aspect-ratio: 1/1;
        }

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

        .case-card:hover .case-img-wrap img {
            transform: scale(1.05);
        }

        .case-info {
            padding: 20px;
        }

        .case-info h3 {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .case-info p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 对比评测表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 2px solid var(--dark);
            border-radius: 4px;
            box-shadow: 6px 6px 0 var(--dark);
            margin-top: 24px;
        }

        .eval-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--white);
            min-width: 600px;
        }

        .eval-table th, .eval-table td {
            padding: 16px;
            text-align: left;
            border-bottom: 2px solid var(--border);
            border-right: 2px solid var(--border);
        }

        .eval-table th {
            background-color: var(--dark);
            color: var(--white);
            font-weight: 800;
        }

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

        .eval-table tr:hover {
            background-color: #f1f5f9;
        }

        .score-highlight {
            font-size: 24px;
            font-weight: 900;
            color: var(--accent-pink);
        }

        .star-rating {
            color: var(--accent);
            font-size: 18px;
        }

        /* Token 比价参考 */
        .token-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        @media (max-width: 768px) {
            .token-grid {
                grid-template-columns: 1fr;
            }
        }

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

        .faq-item {
            border: 2px solid var(--dark);
            background: var(--white);
            margin-bottom: 12px;
            border-radius: 4px;
            box-shadow: 3px 3px 0 var(--dark);
            overflow: hidden;
        }

        .faq-header {
            padding: 18px 24px;
            font-weight: 800;
            font-size: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: var(--white);
            user-select: none;
            transition: background 0.2s;
        }

        .faq-header:hover {
            background-color: #eff6ff;
        }

        .faq-icon {
            font-size: 18px;
            transition: transform 0.2s;
        }

        .faq-content {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.2s ease-out, padding 0.2s ease-out;
            border-top: 0 solid var(--border);
            color: var(--text-muted);
            font-size: 14px;
        }

        .faq-item.active .faq-content {
            padding: 18px 24px;
            max-height: 300px;
            border-top-width: 2px;
        }

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

        /* 客户评论卡片 */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .testimonial-card {
            background: var(--white);
            border: 2px solid var(--dark);
            border-radius: 4px;
            padding: 24px;
            box-shadow: 4px 4px 0 var(--dark);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .testimonial-text {
            font-style: italic;
            margin-bottom: 16px;
            font-weight: 500;
            color: var(--dark);
        }

        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 2px dashed var(--border);
            padding-top: 12px;
        }

        .avatar-txt {
            width: 40px;
            height: 40px;
            background: var(--accent);
            border: 2px solid var(--dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
        }

        .user-info h4 {
            font-size: 14px;
            font-weight: 800;
        }

        .user-info p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 文章列表与资讯 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .news-card {
            background: var(--white);
            border: 2px solid var(--dark);
            border-radius: 4px;
            padding: 20px;
            box-shadow: 4px 4px 0 var(--dark);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-card h3 {
            font-size: 16px;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .news-card a {
            color: var(--primary);
            font-weight: 700;
            text-decoration: none;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            margin-top: 12px;
        }

        .news-card a:hover {
            text-decoration: underline;
        }

        /* 表单与联系我们 */
        .contact-wrap {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        @media (max-width: 768px) {
            .contact-wrap {
                grid-template-columns: 1fr;
            }
        }

        .form-container {
            background: var(--white);
            border: 2px solid var(--dark);
            padding: 32px;
            border-radius: 4px;
            box-shadow: 6px 6px 0 var(--dark);
        }

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

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 700;
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px;
            border: 2px solid var(--dark);
            border-radius: 4px;
            background: var(--light);
            font-family: inherit;
            font-size: 14px;
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            outline: none;
            background: var(--white);
            box-shadow: 0 0 0 3px rgba(37,99,235,0.2);
        }

        .contact-info-panel {
            background: var(--accent-pink);
            color: var(--white);
            border: 2px solid var(--dark);
            padding: 32px;
            border-radius: 4px;
            box-shadow: 6px 6px 0 var(--dark);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-info-panel a {
            color: var(--white);
            text-decoration: underline;
        }

        .kefu-qr-wrap {
            background: var(--white);
            padding: 12px;
            border: 2px solid var(--dark);
            border-radius: 4px;
            display: inline-block;
            margin-top: 20px;
        }

        .kefu-qr-wrap img {
            width: 130px;
            height: auto;
            display: block;
        }

        /* 浮动客服 */
        .float-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background: var(--white);
            border: 2px solid var(--dark);
            border-radius: 50%;
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 4px 4px 0 var(--dark);
            cursor: pointer;
            transition: all 0.2s;
        }

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

        .float-kefu svg {
            width: 28px;
            height: 28px;
            fill: var(--primary);
        }

        .kefu-popover {
            position: absolute;
            bottom: 70px;
            right: 0;
            background: var(--white);
            border: 2px solid var(--dark);
            padding: 16px;
            border-radius: 8px;
            box-shadow: 6px 6px 0 var(--dark);
            display: none;
            width: 220px;
            text-align: center;
        }

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

        .kefu-popover img {
            width: 100%;
            border: 1px solid var(--border);
            margin-bottom: 8px;
        }

        /* 页脚样式 */
        footer {
            background: var(--dark);
            color: var(--white);
            padding: 60px 0 30px 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding-bottom: 40px;
            margin-bottom: 30px;
        }

        .footer-col h3 {
            font-size: 18px;
            margin-bottom: 16px;
            font-weight: 800;
            color: var(--accent);
        }

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

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

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 14px;
        }

        .footer-links a:hover {
            color: var(--white);
            text-decoration: underline;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 14px;
            color: #94a3b8;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .friend-links a {
            color: #94a3b8;
            text-decoration: none;
        }

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

        /* 移动端菜单激活样式 */
        @media (max-width: 992px) {
            .menu-toggle {
                display: block;
            }

            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: var(--white);
                border-bottom: 2px solid var(--dark);
                padding: 20px;
                box-shadow: var(--shadow-md);
            }

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

            .nav-actions {
                display: none;
            }

            .about-wrap {
                grid-template-columns: 1fr;
            }
        }