:root {
            --primary: #FF6A00;
            --primary-light: #FF944D;
            --primary-dark: #D45500;
            --accent: #FFB703;
            --bg-base: #FFFBF7;
            --bg-card: #FFFFFF;
            --text-main: #1A1A1A;
            --text-muted: #555555;
            --border-color: #FEE8D6;
            --container-max: 1280px;
            --radius: 12px;
            --shadow: 0 10px 30px rgba(255, 106, 0, 0.08);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 251, 247, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

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

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

        .brand-text {
            font-size: 20px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), #FF3300);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0;
        }

        .nav-links a {
            padding: 8px 12px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            transition: var(--transition);
            border-radius: 6px;
        }

        .nav-links a:hover {
            color: var(--primary);
            background: rgba(255, 106, 0, 0.05);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            font-size: 14px;
            font-weight: 700;
            border-radius: var(--radius);
            cursor: pointer;
            transition: var(--transition);
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #FF4500);
            color: #FFFFFF;
            box-shadow: 0 4px 15px rgba(255, 106, 0, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 106, 0, 0.4);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

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

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-main);
            cursor: pointer;
        }

        /* Hero 首屏 (无图片) */
        .hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(180deg, rgba(255,106,0,0.05) 0%, rgba(255,255,255,0) 100%);
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: #FFE8D6;
            color: var(--primary-dark);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 24px;
            animation: fadeInDown 0.8s ease;
        }

        .hero h1 {
            font-size: clamp(32px, 5vw, 56px);
            font-weight: 900;
            letter-spacing: -1px;
            margin-bottom: 20px;
            color: var(--text-main);
            line-height: 1.2;
            animation: fadeInUp 0.8s ease;
        }

        .hero h1 span {
            background: linear-gradient(135deg, var(--primary), #FF3300);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: clamp(16px, 2vw, 20px);
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px;
            animation: fadeInUp 1s ease;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 50px;
            animation: fadeInUp 1.2s ease;
        }

        /* 数据指标卡片 */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            max-width: 1000px;
            margin: 0 auto;
            animation: fadeInUp 1.4s ease;
        }

        .metric-card {
            background: var(--bg-card);
            padding: 24px;
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .metric-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }

        .metric-value {
            font-size: 32px;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .metric-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* 通用区块样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px;
        }

        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--primary);
            background: rgba(255, 106, 0, 0.1);
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-muted);
        }

        /* 服务能力卡片 (AIGC服务 & 平台介绍) */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
        }

        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 35px 30px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .card:hover {
            transform: translateY(-6px);
            border-color: var(--primary);
            box-shadow: 0 15px 35px rgba(255, 106, 0, 0.12);
        }

        .card-icon {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 22px;
            font-weight: bold;
            margin-bottom: 20px;
        }

        .card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.7;
        }

        /* 一站式制作 & 场景展示 */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .scenario-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 25px;
            transition: var(--transition);
        }

        .scenario-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
        }

        .scenario-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

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

        /* 行业方案与服务网络 */
        .feature-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        @media (max-width: 900px) {
            .feature-split {
                grid-template-columns: 1fr;
            }
        }

        .feature-content h3 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .feature-content p {
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.8;
        }

        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .feature-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 600;
            font-size: 15px;
        }

        .feature-item::before {
            content: "✓";
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: 50%;
            font-size: 12px;
            font-weight: bold;
        }

        /* 标准流程 */
        .steps-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 30px;
            position: relative;
        }

        .step-card {
            background: var(--bg-card);
            padding: 30px;
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            position: relative;
        }

        .step-num {
            font-size: 40px;
            font-weight: 900;
            color: rgba(255, 106, 0, 0.15);
            margin-bottom: 10px;
        }

        .step-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        /* 案例中心 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }

        .case-img-box {
            position: relative;
            background: #FFF0E5;
            min-height: 180px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .ai-page-image {
            width: 100%;
            height: auto;
            object-fit: cover;
            display: block;
        }

        .case-body {
            padding: 24px;
        }

        .case-body h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        /* 对比评测表格 */
        .comparison-wrapper {
            overflow-x: auto;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

        .comparison-table th, .comparison-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

        .comparison-table th {
            background: #FFF3EB;
            font-weight: 800;
            color: var(--primary-dark);
        }

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

        .rating-stars {
            color: var(--accent);
            font-weight: bold;
        }

        /* 需求匹配与表单 */
        .form-section {
            background: linear-gradient(135deg, #FFF3EB, #FFFBF7);
            border-radius: var(--radius);
            padding: 50px;
            border: 1px solid var(--border-color);
            max-width: 900px;
            margin: 0 auto;
        }

        .contact-form {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

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

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

        .form-group.full {
            grid-column: 1 / -1;
        }

        .form-group label {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-main);
        }

        .form-control {
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid #DCDCDC;
            font-size: 14px;
            background: #FFFFFF;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 106, 0, 0.1);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 120px;
        }

        /* Token 比价参考 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .token-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 24px;
            text-align: center;
        }

        .token-price {
            font-size: 28px;
            font-weight: 900;
            color: var(--primary);
            margin: 15px 0;
        }

        /* 帮助中心与常见问题 (FAQ折叠) */
        .faq-list {
            max-width: 850px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 700;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
        }

        .faq-question::after {
            content: "+";
            font-size: 20px;
            color: var(--primary);
            transition: transform 0.3s ease;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 24px;
            font-size: 14px;
            color: var(--text-muted);
            transition: all 0.3s ease;
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* 客户评论卡片 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-text {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            font-style: italic;
        }

        .review-author {
            font-weight: 700;
            font-size: 14px;
            color: var(--text-main);
        }

        .review-role {
            font-size: 12px;
            color: var(--primary);
            margin-top: 2px;
        }

        /* 文章列表与资讯 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 20px;
            transition: var(--transition);
        }

        .article-card:hover {
            transform: translateY(-3px);
            border-color: var(--primary);
        }

        .article-card a {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            display: block;
            line-height: 1.5;
        }

        .article-card a:hover {
            color: var(--primary);
        }

        /* 底部与友情链接 */
        .site-footer {
            background: #1A1A1A;
            color: #E0E0E0;
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 20px;
        }

        .footer-col p, .footer-col li {
            font-size: 13px;
            color: #AAAAAA;
            margin-bottom: 10px;
            line-height: 1.6;
        }

        .footer-col a {
            color: #AAAAAA;
            transition: color 0.2s;
        }

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

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

        .qr-box {
            width: 100px;
            height: 100px;
            background: #FFFFFF;
            padding: 5px;
            border-radius: 6px;
            margin-top: 10px;
        }

        .qr-box img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #333333;
            font-size: 12px;
            color: #888888;
        }

        /* 浮动客服入口 */
        .floating-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background: linear-gradient(135deg, var(--primary), #FF3300);
            color: #FFFFFF;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 20px rgba(255, 106, 0, 0.4);
            cursor: pointer;
            transition: var(--transition);
        }

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

        .kefu-popup {
            position: fixed;
            bottom: 100px;
            right: 30px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            z-index: 999;
            display: none;
            text-align: center;
            width: 220px;
        }

        .kefu-popup.show {
            display: block;
            animation: fadeInUp 0.3s ease;
        }

        .kefu-popup img {
            width: 150px;
            height: 150px;
            object-fit: contain;
            margin-bottom: 10px;
        }

        /* 动画定义 */
        @keyframes fadeInDown {
            from { opacity: 0; transform: translateY(-20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 80px;
                left: 0;
                width: 100%;
                background: var(--bg-card);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow);
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .header-actions {
                display: none;
            }
        }