:root {
            --bg-dark: #07050f;
            --bg-card: #120e25;
            --primary: #ff007f;
            --secondary: #9d4edd;
            --accent: #00f0ff;
            --text-main: #f1f1f7;
            --text-muted: #a09cb0;
            --border-color: rgba(255, 0, 127, 0.2);
            --gradient-primary: linear-gradient(135deg, #ff007f 0%, #7b2cbf 100%);
            --gradient-cyber: linear-gradient(90deg, #ff007f, #9d4edd, #00f0ff);
        }

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

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

        body {
            line-height: 1.6;
            overflow-x: hidden;
            background-image: radial-gradient(circle at 50% 0%, #1e0b36 0%, #07050f 70%);
        }

        /* 统一容器 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        a {
            color: var(--text-main);
            text-decoration: none;
            transition: all 0.3s ease;
        }

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(7, 5, 15, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 0, 127, 0.15);
        }

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

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

        .ai-page-logo {
            height: 40px;
            width: auto;
            filter: drop-shadow(0 0 8px var(--primary));
        }

        .logo-text {
            font-size: 1.25rem;
            font-weight: 800;
            background: var(--gradient-cyber);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
        }

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

        .nav-link {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 5px 10px;
            position: relative;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: all 0.3s ease;
            transform: translateX(-50%);
        }

        .nav-link:hover::after {
            width: 80%;
        }

        .nav-btn {
            background: var(--gradient-primary);
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 0 15px rgba(255, 0, 127, 0.4);
            border: none;
            cursor: pointer;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 25px rgba(255, 0, 127, 0.7);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--text-main);
            transition: all 0.3s ease;
        }

        /* 首屏 Hero 区 (无图片) */
        .hero-section {
            padding: 160px 0 100px 0;
            text-align: center;
            position: relative;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 30px;
            background: rgba(255, 0, 127, 0.1);
            border: 1px solid var(--primary);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 1px;
            box-shadow: 0 0 15px rgba(255, 0, 127, 0.1);
        }

        .hero-title {
            font-size: 3rem;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #ffffff 30%, #e2a8ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-title span {
            background: var(--gradient-cyber);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: block;
            margin-top: 10px;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px auto;
            line-height: 1.8;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn-main {
            background: var(--gradient-cyber);
            color: #fff;
            padding: 15px 40px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 700;
            box-shadow: 0 0 30px rgba(157, 78, 221, 0.5);
            transition: all 0.3s ease;
        }

        .btn-main:hover {
            transform: scale(1.05);
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.6);
        }

        .btn-sub {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-main);
            padding: 15px 40px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .btn-sub:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--accent);
        }

        /* 数据指标卡片 */
        .stats-section {
            padding: 40px 0;
            background: rgba(18, 14, 37, 0.5);
            border-top: 1px solid rgba(255, 0, 127, 0.1);
            border-bottom: 1px solid rgba(255, 0, 127, 0.1);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .stat-card {
            padding: 20px;
        }

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            background: var(--gradient-cyber);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 模块统一样式 */
        section {
            padding: 90px 0;
        }

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

        .section-tag {
            color: var(--primary);
            text-transform: uppercase;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 2px;
            margin-bottom: 10px;
            display: block;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 15px;
        }

        .section-desc {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

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

        .about-content h3 {
            font-size: 1.6rem;
            margin-bottom: 20px;
            color: var(--accent);
        }

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

        .feature-bullets {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .feature-bullets li {
            position: relative;
            padding-left: 25px;
            color: var(--text-main);
            font-size: 0.95rem;
        }

        .feature-bullets li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        .about-image-wrapper {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: 0 0 30px rgba(157, 78, 221, 0.2);
        }

        .about-image-wrapper img {
            width: 100%;
            display: block;
            transition: transform 0.5s ease;
        }

        .about-image-wrapper:hover img {
            transform: scale(1.05);
        }

        /* 服务能力 / 场景卡片 */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 16px;
            padding: 35px 25px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, rgba(255, 0, 127, 0.1) 0%, transparent 100%);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .card:hover {
            transform: translateY(-5px);
            border-color: rgba(255, 0, 127, 0.4);
            box-shadow: 0 10px 30px rgba(157, 78, 221, 0.25);
        }

        .card:hover::before {
            opacity: 1;
        }

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

        .card-title {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }

        .card-desc {
            color: var(--text-muted);
            font-size: 0.95rem;
            position: relative;
            z-index: 2;
        }

        /* 平台聚合标签云 */
        .platform-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 900px;
            margin: 0 auto;
        }

        .platform-tag {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            color: var(--text-main);
            transition: all 0.3s ease;
        }

        .platform-tag:hover {
            border-color: var(--accent);
            background: rgba(0, 240, 255, 0.05);
            color: var(--accent);
            transform: translateY(-2px);
        }

        /* 流程步骤 */
        .step-timeline {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-item {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 50px;
            height: 50px;
            border-radius: 50px;
            background: var(--gradient-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            margin: 0 auto 20px auto;
            border: 2px solid var(--accent);
            box-shadow: 0 0 15px rgba(255, 0, 127, 0.5);
        }

        .step-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 对比评测表格 */
        .compare-wrapper {
            background: var(--bg-card);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            padding: 30px;
            overflow-x: auto;
        }

        .score-banner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            background: rgba(255, 0, 127, 0.05);
            border: 1px solid rgba(255, 0, 127, 0.2);
            border-radius: 12px;
            padding: 20px;
            margin-bottom: 30px;
        }

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

        .score-value {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent);
        }

        .score-star {
            color: #ffd700;
            font-size: 1.5rem;
        }

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

        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .compare-table th {
            font-weight: 700;
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.02);
        }

        .compare-table tr:hover td {
            background: rgba(255, 255, 255, 0.01);
        }

        .highlight-col {
            color: var(--accent);
            font-weight: bold;
        }

        /* 案例展示 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            border-radius: 16px;
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .case-img-container {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .case-info {
            padding: 25px;
        }

        .case-tag {
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 700;
            margin-bottom: 8px;
            display: inline-block;
        }

        .case-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .case-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* 工具计算器：比价参考 & 需求匹配 */
        .tools-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .tool-box {
            background: var(--bg-card);
            border-radius: 16px;
            border: 1px solid rgba(255, 0, 127, 0.15);
            padding: 30px;
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 0.95rem;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            background: rgba(7, 5, 15, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-main);
            outline: none;
            transition: all 0.3s ease;
        }

        .form-control:focus {
            border-color: var(--accent);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
        }

        .calc-result {
            margin-top: 25px;
            padding: 15px;
            background: rgba(255, 0, 127, 0.05);
            border-radius: 8px;
            border: 1px dashed var(--primary);
            text-align: center;
        }

        .calc-price {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
        }

        /* 评论区 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .comment-card {
            background: var(--bg-card);
            border-radius: 16px;
            padding: 30px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            position: relative;
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
        }

        .user-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--gradient-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
            border: 2px solid var(--accent);
        }

        .user-info h4 {
            font-size: 1rem;
            font-weight: 700;
        }

        .user-info span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .comment-text {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }

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

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 18px 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.1rem;
            transition: color 0.3s ease;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-top: 0;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            margin-top: 10px;
        }

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

        .faq-icon {
            font-size: 1.5rem;
            transition: transform 0.3s ease;
            color: var(--text-muted);
        }

        /* 百科与资讯 */
        .articles-box {
            background: var(--bg-card);
            border-radius: 16px;
            padding: 35px;
            border: 1px solid var(--border-color);
        }

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

        .article-item a {
            display: block;
            padding: 15px;
            background: rgba(255, 255, 255, 0.02);
            border-radius: 8px;
            border-left: 3px solid var(--primary);
        }

        .article-item a:hover {
            background: rgba(255, 255, 255, 0.05);
            border-left-color: var(--accent);
            transform: translateX(5px);
        }

        /* 表单提交与联系方式 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .contact-form-card {
            background: var(--bg-card);
            border-radius: 16px;
            padding: 40px;
            border: 1px solid var(--border-color);
        }

        .contact-info-card {
            background: rgba(255, 255, 255, 0.02);
            border-radius: 16px;
            padding: 40px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .info-list {
            list-style: none;
            margin-bottom: 30px;
        }

        .info-item {
            margin-bottom: 20px;
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }

        .info-icon {
            color: var(--accent);
            font-weight: 700;
        }

        .qrcode-container {
            display: flex;
            gap: 20px;
            margin-top: 20px;
        }

        .qrcode-box {
            text-align: center;
            flex: 1;
        }

        .qrcode-box img {
            width: 100%;
            max-width: 130px;
            border-radius: 8px;
            border: 2px solid var(--border-color);
            margin-bottom: 8px;
        }

        .qrcode-box p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 浮动客服 */
        .floating-service {
            position: fixed;
            bottom: 40px;
            right: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--gradient-primary);
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 5px 15px rgba(255, 0, 127, 0.4);
            color: #fff;
            font-weight: bold;
            font-size: 1.1rem;
            transition: all 0.3s ease;
        }

        .float-btn:hover {
            transform: scale(1.1);
            box-shadow: 0 5px 25px rgba(255, 0, 127, 0.7);
        }

        .float-panel {
            position: absolute;
            bottom: 65px;
            right: 0;
            width: 260px;
            background: var(--bg-card);
            border: 1px solid var(--primary);
            border-radius: 12px;
            padding: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            display: none;
        }

        .float-panel.active {
            display: block;
        }

        /* 友情链接与底部 */
        footer {
            background: #05030a;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 60px 0 30px 0;
            color: var(--text-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 40px;
        }

        .footer-logo img {
            height: 40px;
            margin-bottom: 15px;
        }

        .footer-links h5 {
            color: var(--text-main);
            font-size: 1.1rem;
            margin-bottom: 20px;
        }

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

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

        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

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

        .friend-links {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            margin-bottom: 30px;
            font-size: 0.85rem;
        }

        .friend-links a {
            margin-right: 15px;
            color: var(--text-muted);
            display: inline-block;
        }

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

        .copyright-bar {
            text-align: center;
            font-size: 0.8rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .tools-grid, .contact-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .grid-3, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-timeline {
                grid-template-columns: repeat(3, 1fr);
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--bg-card);
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .grid-3, .comments-grid, .stats-grid, .step-timeline {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .articles-list {
                grid-template-columns: 1fr;
            }
        }