/* 变量及重置 */
        :root {
            --primary: #0F172A;      /* 深海蓝 */
            --accent-green: #10B981; /* 霓虹绿 */
            --accent-orange: #FF6B00;/* 艳亮橙 */
            --bg-light: #F8FAFC;     /* 浅冷灰 */
            --bg-card: #FFFFFF;
            --text-main: #0F172A;
            --text-muted: #475569;
            --border-width: 2px;
            --border-color: #0F172A;
            --shadow-flat: 4px 4px 0px #0F172A;
            --shadow-hover: 8px 8px 0px #0F172A;
            --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

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

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

        /* 统一容器宽度 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 撞色粗线风格块 */
        .brutalist-card {
            background-color: var(--bg-card);
            border: var(--border-width) solid var(--border-color);
            box-shadow: var(--shadow-flat);
            padding: 28px;
            border-radius: 12px;
            transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

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

        /* 按钮设计 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-weight: 700;
            font-size: 16px;
            text-decoration: none;
            border: var(--border-width) solid var(--border-color);
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.2s ease;
            box-shadow: 3px 3px 0px var(--border-color);
        }

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

        .btn-primary {
            background-color: var(--accent-orange);
            color: #FFFFFF;
        }

        .btn-secondary {
            background-color: var(--accent-green);
            color: #0F172A;
        }

        .btn-dark {
            background-color: var(--primary);
            color: #FFFFFF;
        }

        /* 标签与眉标 */
        .badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 13px;
            font-weight: 700;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            background-color: #E2E8F0;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        /* 标题排版 */
        h1, h2, h3, h4 {
            font-weight: 900;
            color: var(--primary);
            line-height: 1.25;
        }

        h2 {
            font-size: 32px;
            margin-bottom: 16px;
            position: relative;
            display: inline-block;
        }

        h2::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 6px;
            background-color: var(--accent-green);
            z-index: -1;
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-header p {
            font-size: 18px;
            color: var(--text-muted);
            margin-top: 12px;
        }

        /* Header 导航 */
        header {
            background-color: #FFFFFF;
            border-bottom: var(--border-width) solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

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

        .nav-links {
            display: flex;
            gap: 20px;
            list-style: none;
            align-items: center;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--text-main);
            font-weight: 700;
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        /* Hero 首屏 - 无任何图片 */
        .hero {
            background: linear-gradient(135deg, #F1F5F9 0%, #E2E8F0 100%);
            border-bottom: var(--border-width) solid var(--border-color);
            padding: 100px 0 120px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 40%;
            height: 60%;
            background: radial-gradient(circle, rgba(16,185,129,0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            right: -10%;
            width: 50%;
            height: 70%;
            background: radial-gradient(circle, rgba(255,107,0,0.1) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero h1 {
            font-size: 48px;
            margin-bottom: 24px;
            letter-spacing: -1px;
            color: var(--primary);
        }

        .hero p.lead {
            font-size: 20px;
            max-width: 800px;
            margin: 0 auto 36px;
            color: var(--text-muted);
        }

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

        /* 数据指标卡片 */
        .metrics-section {
            padding: 60px 0;
            background-color: #FFFFFF;
            border-bottom: var(--border-width) solid var(--border-color);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }

        .metric-card {
            text-align: center;
            border: var(--border-width) solid var(--border-color);
            border-radius: 8px;
            padding: 24px;
            background-color: #FFFFFF;
        }

        .metric-num {
            font-size: 40px;
            font-weight: 900;
            color: var(--accent-orange);
            margin-bottom: 8px;
        }

        .metric-label {
            font-weight: 700;
            color: var(--text-main);
        }

        /* 通用区块设置 */
        .section {
            padding: 100px 0;
            border-bottom: var(--border-width) solid var(--border-color);
        }

        .section:nth-child(even) {
            background-color: #FFFFFF;
        }

        /* 平台介绍 & 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .about-feature-item {
            padding: 16px;
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 8px;
        }

        .about-feature-item h4 {
            margin-bottom: 8px;
        }

        /* 模型聚合 (标签云风) */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 30px;
        }

        .cloud-tag {
            padding: 10px 20px;
            background-color: #FFFFFF;
            border: var(--border-width) solid var(--border-color);
            font-weight: 700;
            border-radius: 6px;
            box-shadow: 2px 2px 0px var(--border-color);
            transition: all 0.2s;
        }

        .cloud-tag:hover {
            background-color: var(--accent-green);
            transform: translateY(-2px);
        }

        /* 一站式AIGC制作 (服务卡片 + 素材展示) */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .media-showcase {
            margin-top: 50px;
            border: var(--border-width) solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            background-color: #FFFFFF;
            box-shadow: var(--shadow-flat);
        }

        .media-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            border-top: var(--border-width) solid var(--border-color);
        }

        .media-main {
            padding: 24px;
            border-right: var(--border-width) solid var(--border-color);
        }

        .media-side {
            padding: 24px;
            background-color: var(--bg-light);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }

        .media-grid img {
            border-radius: 8px;
            border: 1px solid var(--border-color);
            width: 100%;
        }

        /* 流程步骤 */
        .steps-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            position: relative;
        }

        .step-card {
            position: relative;
            z-index: 2;
        }

        .step-num {
            display: inline-flex;
            width: 44px;
            height: 44px;
            background-color: var(--accent-orange);
            color: #FFFFFF;
            font-weight: 900;
            font-size: 20px;
            align-items: center;
            justify-content: center;
            border: var(--border-width) solid var(--border-color);
            border-radius: 50%;
            margin-bottom: 20px;
        }

        /* 对比评测表格 */
        .table-responsive {
            overflow-x: auto;
            border: var(--border-width) solid var(--border-color);
            border-radius: 12px;
            box-shadow: var(--shadow-flat);
            background-color: #FFFFFF;
        }

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

        th, td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
        }

        th {
            background-color: var(--primary);
            color: #FFFFFF;
            font-weight: 800;
        }

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

        .highlight-row {
            background-color: rgba(16,185,129,0.1);
        }

        .rating-box {
            background-color: var(--accent-orange);
            color: #FFFFFF;
            padding: 24px;
            border-radius: 12px;
            border: var(--border-width) solid var(--border-color);
            text-align: center;
            max-width: 400px;
            margin: 40px auto 0;
            box-shadow: var(--shadow-flat);
        }

        .rating-score {
            font-size: 64px;
            font-weight: 950;
            line-height: 1;
            margin: 10px 0;
        }

        /* 常见问题 FAQ 折叠面板 */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            max-width: 900px;
            margin: 0 auto;
        }

        details {
            border: var(--border-width) solid var(--border-color);
            border-radius: 8px;
            background-color: #FFFFFF;
            padding: 16px 20px;
            box-shadow: 3px 3px 0px var(--border-color);
        }

        details[open] {
            box-shadow: 5px 5px 0px var(--border-color);
        }

        summary {
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            outline: none;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        summary::-webkit-details-marker {
            display: none;
        }

        summary::after {
            content: "+";
            font-size: 22px;
            font-weight: 700;
            color: var(--accent-orange);
        }

        details[open] summary::after {
            content: "−";
        }

        .faq-content {
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px dashed var(--border-color);
            color: var(--text-muted);
        }

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

        .testimonial-card {
            border: var(--border-width) solid var(--border-color);
            background-color: #FFFFFF;
            border-radius: 12px;
            padding: 24px;
            box-shadow: var(--shadow-flat);
        }

        .client-profile {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 20px;
            border-top: 1px dashed var(--border-color);
            padding-top: 12px;
        }

        .client-info h4 {
            font-size: 16px;
        }

        .client-info p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 培训版块 */
        .training-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

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

        .cert-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .cert-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--accent-green);
            font-weight: 900;
            font-size: 18px;
        }

        /* 表单与联系我们 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .contact-form {
            display: grid;
            gap: 20px;
        }

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

        .form-group label {
            font-weight: 700;
            font-size: 14px;
        }

        .form-group input, .form-group select, .form-group textarea {
            padding: 14px;
            border: var(--border-width) solid var(--border-color);
            border-radius: 8px;
            outline: none;
            font-family: inherit;
            font-size: 15px;
        }

        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            border-color: var(--accent-orange);
            box-shadow: 2px 2px 0px var(--border-color);
        }

        .info-card {
            background-color: var(--primary);
            color: #FFFFFF;
            padding: 36px;
            border-radius: 12px;
            border: var(--border-width) solid var(--border-color);
        }

        .info-card h3 {
            color: #FFFFFF;
            margin-bottom: 24px;
        }

        .info-item {
            margin-bottom: 20px;
        }

        .info-item p {
            color: #E2E8F0;
        }

        /* 案例图片列表 */
        .case-images-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 40px;
        }

        .case-image-wrapper {
            border: var(--border-width) solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-flat);
        }

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

        /* 友情链接与底部 */
        footer {
            background-color: var(--primary);
            color: #FFFFFF;
            padding: 60px 0 30px;
            border-top: var(--border-width) solid var(--border-color);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .footer-logo {
            margin-bottom: 16px;
        }

        .footer-links-group h4 {
            color: #FFFFFF;
            margin-bottom: 16px;
        }

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

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

        .footer-links-group a {
            color: #E2E8F0;
            text-decoration: none;
            font-size: 14px;
        }

        .footer-links-group a:hover {
            color: var(--accent-green);
        }

        .friend-links {
            margin-top: 30px;
            padding: 20px 0;
            border-top: 1px solid rgba(255,255,255,0.1);
        }

        .friend-links a {
            color: #94A3B8;
            text-decoration: none;
            margin-right: 16px;
            font-size: 13px;
            display: inline-block;
        }

        .friend-links a:hover {
            color: #FFFFFF;
        }

        .copyright-bar {
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: #94A3B8;
        }

        .copyright-bar a {
            color: #94A3B8;
        }

        /* 浮动客服 */
        .sticky-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .kefu-btn {
            background-color: var(--accent-orange);
            border: var(--border-width) solid var(--border-color);
            box-shadow: 3px 3px 0 var(--border-color);
            border-radius: 50%;
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            position: relative;
        }

        .kefu-panel {
            position: absolute;
            bottom: 70px;
            right: 0;
            width: 220px;
            background-color: #FFFFFF;
            border: var(--border-width) solid var(--border-color);
            border-radius: 8px;
            box-shadow: var(--shadow-flat);
            padding: 16px;
            display: none;
            text-align: center;
        }

        .kefu-panel img {
            width: 120px;
            height: 120px;
            margin: 10px 0;
        }

        .kefu-btn:hover .kefu-panel {
            display: block;
        }

        /* 移动端响应式样式 */
        @media (max-width: 992px) {
            .about-grid, .training-grid, .contact-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .media-grid {
                grid-template-columns: 1fr;
            }

            .media-main {
                border-right: none;
                border-bottom: var(--border-width) solid var(--border-color);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 80px;
                left: 0;
                right: 0;
                background-color: #FFFFFF;
                border-bottom: var(--border-width) solid var(--border-color);
                padding: 20px;
                box-shadow: var(--shadow-flat);
            }

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

            .hamburger {
                display: flex;
            }

            .hero h1 {
                font-size: 32px;
            }

            .hero p.lead {
                font-size: 16px;
            }
        }