/* 核心重置与基础样式 */
        :root {
            --primary: #2563eb;
            --primary-hover: #1d4ed8;
            --secondary: #10b981;
            --secondary-hover: #059669;
            --accent: #f59e0b;
            --dark: #0f172a;
            --light: #f8fafc;
            --border: #e2e8f0;
            --text-main: #334155;
            --text-bold: #0f172a;
            --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-main);
            background-color: var(--light);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

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

        .ai-page-logo {
            height: 40px;
            object-fit: contain;
        }

        .brand-name {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 13px;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-main);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
        }

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background-color: var(--primary);
            color: white !important;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
        }

        .btn-secondary {
            background-color: var(--secondary);
            color: white !important;
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
        }

        .btn-secondary:hover {
            background-color: var(--secondary-hover);
            transform: translateY(-2px);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 3px;
            transition: var(--transition);
        }

        /* Hero 区域（首屏完全无图片，使用亮色渐变与微动效） */
        .hero-section {
            background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 50%, #f0fdf4 100%);
            padding: 100px 0 80px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(37,99,235,0.15) 0%, transparent 70%);
            border-radius: 50%;
            animation: float-slow 12s infinite alternate;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .hero-content {
            z-index: 10;
        }

        .hero-tag {
            display: inline-block;
            background-color: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 20px;
            border: 1px solid rgba(37, 99, 235, 0.2);
        }

        .hero-h1 {
            font-size: 2.6rem;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 20px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }

        .hero-h1 span {
            color: var(--primary);
            background: linear-gradient(to right, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.1rem;
            margin-bottom: 30px;
            color: var(--text-main);
        }

        .hero-actions {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .hero-info-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }

        .hero-info-card {
            background-color: rgba(255, 255, 255, 0.8);
            border: 1px solid white;
            border-radius: 12px;
            padding: 15px;
            backdrop-filter: blur(5px);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }

        .hero-info-card h4 {
            color: var(--primary);
            font-size: 1.2rem;
            margin-bottom: 5px;
        }

        .hero-info-card p {
            font-size: 0.85rem;
            color: var(--text-main);
        }

        /* 侧边聚合模型演示（CSS绘制，无图片） */
        .hero-model-mesh {
            background-color: white;
            border-radius: 20px;
            padding: 30px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(255,255,255,0.8);
            display: flex;
            flex-direction: column;
            gap: 20px;
            position: relative;
        }

        .mesh-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--dark);
            border-bottom: 1px solid var(--border);
            padding-bottom: 10px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .mesh-status {
            font-size: 0.75rem;
            color: var(--secondary);
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .mesh-status::before {
            content: '';
            width: 8px;
            height: 8px;
            background-color: var(--secondary);
            border-radius: 50%;
            display: inline-block;
            box-shadow: 0 0 8px var(--secondary);
        }

        .model-tags-container {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .model-badge {
            background-color: #f1f5f9;
            color: var(--text-main);
            padding: 6px 12px;
            border-radius: 6px;
            font-size: 0.8rem;
            font-weight: 600;
            border: 1px solid #e2e8f0;
            transition: var(--transition);
        }

        .model-badge.hot {
            background-color: rgba(245, 158, 11, 0.1);
            color: var(--accent);
            border-color: rgba(245, 158, 11, 0.2);
        }

        .model-badge.premium {
            background-color: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            border-color: rgba(37, 99, 235, 0.2);
        }

        .model-badge:hover {
            transform: scale(1.05);
            background-color: var(--primary);
            color: white;
            border-color: var(--primary);
        }

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

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

        .section-subtitle {
            color: var(--primary);
            font-weight: 700;
            text-transform: uppercase;
            font-size: 0.85rem;
            letter-spacing: 1.5px;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2rem;
            color: var(--dark);
            font-weight: 800;
        }

        /* 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .about-text p {
            margin-bottom: 20px;
            font-size: 1rem;
            color: var(--text-main);
        }

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

        .stat-card {
            background-color: white;
            border: 1px solid var(--border);
            padding: 25px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
            transition: var(--transition);
        }

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

        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 5px;
        }

        /* 服务能力卡片 */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background-color: white;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 30px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--card-shadow);
            border-color: rgba(37,99,235,0.2);
        }

        .card-icon {
            width: 50px;
            height: 50px;
            background-color: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
            font-weight: bold;
        }

        .service-card h3 {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 12px;
            font-weight: 700;
        }

        .service-card p {
            font-size: 0.9rem;
            color: var(--text-main);
            flex-grow: 1;
        }

        /* 一站式AIGC制作展示区 (图片载入) */
        .one-stop-display {
            background-color: white;
            border-radius: 20px;
            padding: 40px;
            border: 1px solid var(--border);
            margin-top: 40px;
        }

        .gallery-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 25px;
        }

        .gallery-item {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border);
            background-color: var(--light);
        }

        .gallery-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            max-height: 380px;
            display: block;
            transition: var(--transition);
        }

        .gallery-item:hover .gallery-img {
            transform: scale(1.03);
        }

        .gallery-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(0,0,0,0.85));
            color: white;
            padding: 20px;
        }

        .gallery-caption h4 {
            font-size: 1.1rem;
            margin-bottom: 5px;
        }

        .gallery-caption p {
            font-size: 0.85rem;
            opacity: 0.9;
        }

        /* 流程步骤 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            background-color: white;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 25px;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 36px;
            height: 36px;
            background-color: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 15px;
        }

        .process-step h4 {
            font-size: 1.05rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .process-step p {
            font-size: 0.85rem;
        }

        /* 对比评测表格 */
        .comparison-table-wrapper {
            overflow-x: auto;
            background-color: white;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--card-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);
        }

        .comparison-table th {
            background-color: #f8fafc;
            color: var(--dark);
            font-weight: 700;
        }

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

        .comparison-table tr.highlight {
            background-color: rgba(37, 99, 235, 0.02);
        }

        .text-center {
            text-align: center;
        }

        .score-badge {
            display: inline-block;
            background-color: #fef3c7;
            color: #d97706;
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: 700;
            font-size: 0.85rem;
        }

        .badge-success {
            background-color: #d1fae5;
            color: #065f46;
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* Token比价参考列表 */
        .token-price-list {
            background-color: white;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 30px;
        }

        .price-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .price-card {
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 20px;
            text-align: center;
            transition: var(--transition);
        }

        .price-card:hover {
            border-color: var(--primary);
            transform: scale(1.02);
        }

        .price-card h4 {
            margin-bottom: 10px;
            font-size: 1.1rem;
            color: var(--dark);
        }

        .price-val {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 5px;
        }

        .price-card span {
            font-size: 0.75rem;
            color: var(--text-main);
        }

        /* FAQ折叠面板 */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background-color: white;
            border: 1px solid var(--border);
            border-radius: 10px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px;
            text-align: left;
            font-size: 1rem;
            font-weight: 700;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.active .faq-question::after {
            content: '-';
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: #fafbfc;
        }

        .faq-answer-inner {
            padding: 20px;
            border-top: 1px solid var(--border);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* 客户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 25px;
        }

        .review-card {
            background-color: white;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
        }

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

        .user-avatar {
            width: 45px;
            height: 45px;
            background-color: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .user-info h5 {
            font-size: 0.95rem;
            color: var(--dark);
            font-weight: 700;
        }

        .user-info span {
            font-size: 0.8rem;
        }

        .review-body {
            font-size: 0.9rem;
            line-height: 1.6;
            position: relative;
        }

        /* 智能需求匹配与联系我们表单 */
        .form-section-inner {
            background-color: white;
            border-radius: 20px;
            border: 1px solid var(--border);
            padding: 40px;
            box-shadow: var(--card-shadow);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

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

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

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 8px;
            background-color: var(--light);
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: white;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }

        .contact-info-area {
            border-left: 1px solid var(--border);
            padding-left: 40px;
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

        .info-block h4 {
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .info-block p {
            font-size: 0.9rem;
        }

        .qr-code-area {
            display: flex;
            gap: 15px;
            align-items: center;
            margin-top: 10px;
        }

        .qr-code-area img {
            width: 100px;
            height: 100px;
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 5px;
            background-color: white;
        }

        /* 案例展示三联宣传图模块 */
        .promotion-banners {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .ai-page-image {
            width: 100%;
            height: 220px;
            object-fit: cover;
            border-radius: 12px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

        /* 行业资讯 / 知识库 */
        .articles-area {
            background-color: white;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 30px;
            margin-top: 45px;
        }

        .articles-list {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .articles-list li {
            border-bottom: 1px dashed var(--border);
            padding-bottom: 12px;
        }

        .articles-list li:last-child {
            border-bottom: none;
        }

        .articles-list a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95rem;
            display: block;
            margin-bottom: 5px;
            transition: var(--transition);
        }

        .articles-list a:hover {
            color: var(--primary-hover);
            text-decoration: underline;
        }

        .article-meta {
            font-size: 0.75rem;
            color: var(--text-main);
        }

        /* 友情链接与首页链接 */
        .footer-links-wrap {
            background-color: #fafbfc;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 25px 0;
        }

        .footer-links-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            align-items: center;
            font-size: 0.85rem;
        }

        .footer-links-inner span {
            font-weight: 700;
            color: var(--dark);
        }

        .footer-links-inner a {
            color: var(--text-main);
            text-decoration: none;
            transition: var(--transition);
        }

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

        /* 底部信息区 */
        footer {
            background-color: var(--dark);
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 0.85rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: white;
            font-size: 0.95rem;
            margin-bottom: 20px;
            font-weight: 700;
        }

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

        .footer-col ul a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-col ul a:hover {
            color: white;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 悬浮侧栏 */
        .floating-action {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: white;
            border: 1px solid var(--border);
            border-radius: 50%;
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }

        .float-btn:hover {
            background-color: var(--primary);
            color: white;
            border-color: var(--primary);
            transform: scale(1.05);
        }

        .float-btn .tooltip {
            position: absolute;
            right: 60px;
            background-color: var(--dark);
            color: white;
            padding: 8px 12px;
            border-radius: 6px;
            font-size: 0.75rem;
            white-space: nowrap;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }

        .float-btn:hover .tooltip {
            opacity: 1;
            visibility: visible;
        }

        .qr-popup {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: white;
            border: 1px solid var(--border);
            padding: 15px;
            border-radius: 8px;
            box-shadow: var(--card-shadow);
            display: none;
            text-align: center;
            width: 150px;
        }

        .qr-popup img {
            width: 120px;
            height: 120px;
            margin-bottom: 5px;
        }

        .qr-popup p {
            font-size: 0.75rem;
            color: var(--dark);
        }

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

        /* 动效 */
        @keyframes float-slow {
            0% { transform: translateY(0px) rotate(0deg); }
            100% { transform: translateY(-20px) rotate(10deg); }
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
            }
            .hero-model-mesh {
                max-width: 600px;
                margin: 0 auto;
            }
            .about-grid {
                grid-template-columns: 1fr;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .contact-info-area {
                border-left: none;
                padding-left: 0;
                border-top: 1px solid var(--border);
                padding-top: 30px;
            }
            .promotion-banners {
                grid-template-columns: 1fr;
            }
            .ai-page-image {
                height: 250px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: white;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero-h1 {
                font-size: 2rem;
            }
            .process-flow {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .articles-list {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .contact-form {
                grid-template-columns: 1fr;
            }
            .form-group-full {
                grid-column: span 1;
            }
            .hero-info-cards {
                grid-template-columns: 1fr;
            }
            .gallery-grid {
                grid-template-columns: 1fr;
            }
        }