:root {
            --bg-dark: #080b11;
            --card-bg: rgba(17, 24, 39, 0.7);
            --neon-blue: #00f2fe;
            --neon-pink: #fe019a;
            --neon-purple: #7f00ff;
            --text-light: #f3f4f6;
            --text-gray: #9ca3af;
            --border-glow: rgba(0, 242, 254, 0.25);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

        /* 霓虹发光按钮 */
        .btn-neon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: 2px solid var(--neon-blue);
            background: transparent;
            color: var(--neon-blue);
            box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .btn-neon:hover {
            background: var(--neon-blue);
            color: #000;
            box-shadow: 0 0 20px var(--neon-blue), 0 0 40px rgba(0, 242, 254, 0.4);
        }

        .btn-neon-pink {
            border-color: var(--neon-pink);
            color: var(--neon-pink);
            box-shadow: 0 0 10px rgba(254, 1, 154, 0.2);
        }

        .btn-neon-pink:hover {
            background: var(--neon-pink);
            color: #fff;
            box-shadow: 0 0 20px var(--neon-pink), 0 0 40px rgba(254, 1, 154, 0.4);
        }

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 11, 17, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

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

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

        .logo-wrapper img {
            height: 40px;
        }

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

        .nav-menu a {
            color: var(--text-gray);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
            position: relative;
            padding: 5px 0;
        }

        .nav-menu a:hover, .nav-menu a.active {
            color: var(--neon-blue);
            text-shadow: 0 0 8px rgba(0, 242, 254, 0.6);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

        .nav-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-light);
            transition: var(--transition);
        }

        /* 英雄首屏 (无图片) */
        .hero-section {
            padding-top: 140px;
            padding-bottom: 80px;
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            min-height: 85vh;
        }

        .hero-content {
            text-align: center;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: rgba(0, 242, 254, 0.1);
            border: 1px solid var(--neon-blue);
            color: var(--neon-blue);
            font-size: 0.85rem;
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 2px;
            box-shadow: 0 0 15px rgba(0, 242, 254, 0.1) inset;
        }

        h1.hero-title {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 25px;
            background: linear-gradient(to right, #fff, #8b9bb4, var(--neon-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-transform: uppercase;
        }

        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-gray);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

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

        /* 背景几何动效 */
        .hero-bg-glow {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(127,0,255,0.15) 0%, rgba(0,242,254,0.05) 50%, rgba(8,11,17,0) 70%);
            z-index: 1;
            pointer-events: none;
            filter: blur(40px);
        }

        /* 基础区块样式 */
        section {
            padding: 90px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.03);
            position: relative;
        }

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

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 15px;
            color: var(--text-light);
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--neon-blue), var(--neon-pink));
        }

        .section-header p {
            color: var(--text-gray);
            max-width: 600px;
            margin: 0 auto;
            font-size: 0.95rem;
        }

        /* 卡片通用网格 */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
            gap: 40px;
        }

        .card {
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 16px;
            padding: 35px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .card:hover {
            transform: translateY(-8px);
            border-color: var(--neon-blue);
            box-shadow: 0 10px 30px rgba(0, 242, 254, 0.15);
        }

        .card-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
            color: var(--neon-blue);
        }

        .card h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: var(--text-light);
        }

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

        /* 关于我们与平台介绍 */
        .intro-block {
            display: flex;
            align-items: center;
            gap: 50px;
            flex-wrap: wrap;
        }

        .intro-text {
            flex: 1;
            min-width: 320px;
        }

        .intro-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--neon-blue);
        }

        .intro-text p {
            margin-bottom: 20px;
            color: var(--text-gray);
        }

        .intro-stats {
            flex: 1;
            min-width: 320px;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .stat-box {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 25px;
            border-radius: 12px;
            text-align: center;
        }

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

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-gray);
        }

        /* 标签云 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 25px;
        }

        .tag-item {
            padding: 6px 14px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 30px;
            font-size: 0.8rem;
            color: var(--text-light);
            transition: var(--transition);
        }

        .tag-item:hover {
            border-color: var(--neon-pink);
            color: var(--neon-pink);
            background: rgba(254, 1, 154, 0.05);
        }

        /* 步骤流程 */
        .step-timeline {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
            margin-top: 40px;
        }

        .step-card {
            background: rgba(255, 255, 255, 0.02);
            border-left: 3px solid var(--neon-blue);
            padding: 25px;
            border-radius: 0 12px 12px 0;
            position: relative;
        }

        .step-num {
            font-size: 2rem;
            font-weight: 800;
            color: rgba(0, 242, 254, 0.2);
            position: absolute;
            top: 15px;
            right: 20px;
        }

        /* 对比评测表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            margin-top: 30px;
            background: var(--card-bg);
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

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

        th {
            background: rgba(255, 255, 255, 0.02);
            color: var(--text-light);
            font-weight: 600;
        }

        td {
            color: var(--text-gray);
            font-size: 0.9rem;
        }

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

        .highlight-col {
            background: rgba(0, 242, 254, 0.03);
            color: var(--neon-blue);
            font-weight: 600;
        }

        /* 案例中心图片展示 */
        .case-gallery {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

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

        .case-item:hover {
            transform: translateY(-5px);
            border-color: var(--neon-pink);
            box-shadow: 0 8px 25px rgba(254, 1, 154, 0.15);
        }

        .case-img-wrap {
            width: 100%;
            overflow: hidden;
            position: relative;
        }

        .case-img-wrap img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
            transition: var(--transition);
        }

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

        .case-info {
            padding: 20px;
        }

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

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 15px 0;
        }

        .faq-trigger {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            background: transparent;
            border: none;
            color: var(--text-light);
            font-size: 1.05rem;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            padding: 10px 0;
        }

        .faq-trigger:hover {
            color: var(--neon-blue);
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            color: var(--text-gray);
            font-size: 0.95rem;
        }

        .faq-content p {
            padding: 10px 0 15px 0;
        }

        .faq-icon {
            font-size: 1.2rem;
            transition: transform 0.3s;
            color: var(--neon-blue);
        }

        .faq-item.active .faq-content {
            max-height: 200px;
        }

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

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

        .review-card {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 30px;
            border-radius: 16px;
            position: relative;
        }

        .review-meta {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-top: 20px;
        }

        .reviewer-info h4 {
            font-size: 0.95rem;
            color: var(--text-light);
        }

        .reviewer-info p {
            font-size: 0.8rem;
            color: var(--text-gray);
        }

        .rating-stars {
            color: #fbbf24;
            font-size: 0.9rem;
            margin-bottom: 10px;
        }

        /* 需求表单与联系我们 */
        .contact-wrapper {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: start;
        }

        .contact-info-panel {
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 40px;
            border-radius: 16px;
        }

        .contact-item {
            margin-bottom: 25px;
        }

        .contact-item h4 {
            color: var(--neon-blue);
            margin-bottom: 5px;
            font-size: 0.95rem;
        }

        .contact-item p {
            color: var(--text-gray);
            font-size: 0.9rem;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 30px;
        }

        .qr-box {
            text-align: center;
            background: rgba(255, 255, 255, 0.02);
            padding: 15px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            flex: 1;
        }

        .qr-box img {
            width: 100px;
            height: 100px;
            object-fit: cover;
            border-radius: 4px;
            margin-bottom: 8px;
        }

        .qr-box p {
            font-size: 0.75rem;
            color: var(--text-gray);
        }

        .form-panel {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 40px;
            border-radius: 16px;
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 0.9rem;
            color: var(--text-light);
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            background: rgba(8, 11, 17, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            color: #fff;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--neon-blue);
            box-shadow: 0 0 10px rgba(0, 242, 254, 0.25);
        }

        /* 资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .news-card {
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 12px;
            padding: 25px;
            transition: var(--transition);
        }

        .news-card:hover {
            border-color: var(--neon-blue);
            transform: translateY(-3px);
        }

        .news-date {
            font-size: 0.8rem;
            color: var(--neon-pink);
            margin-bottom: 10px;
        }

        .news-card h3 {
            font-size: 1.1rem;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .news-card h3 a {
            color: var(--text-light);
            text-decoration: none;
            transition: var(--transition);
        }

        .news-card h3 a:hover {
            color: var(--neon-blue);
        }

        /* 页脚 */
        footer {
            background: #04060a;
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 45px;
        }

        .footer-col h4 {
            color: var(--text-light);
            margin-bottom: 20px;
            font-size: 1rem;
            position: relative;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--neon-blue);
        }

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

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

        .footer-links a {
            color: var(--text-gray);
            text-decoration: none;
            font-size: 0.85rem;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--neon-blue);
            padding-left: 5px;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friend-links a {
            color: var(--text-gray);
            font-size: 0.85rem;
            text-decoration: none;
            transition: var(--transition);
            background: rgba(255, 255, 255, 0.02);
            padding: 4px 10px;
            border-radius: 4px;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .friend-links a:hover {
            color: var(--neon-pink);
            border-color: var(--neon-pink);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.8rem;
            color: var(--text-gray);
        }

        .footer-bottom-links a {
            color: var(--text-gray);
            text-decoration: none;
            margin-left: 15px;
        }

        /* 侧边浮动客服 */
        .float-contact {
            position: fixed;
            right: 20px;
            bottom: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-item {
            width: 50px;
            height: 50px;
            background: var(--card-bg);
            border: 1px solid var(--neon-blue);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(0, 242, 254, 0.2);
            transition: var(--transition);
            position: relative;
        }

        .float-item:hover {
            transform: scale(1.1);
            background: var(--neon-blue);
            box-shadow: 0 0 20px var(--neon-blue);
        }

        .float-item svg {
            width: 22px;
            height: 22px;
            fill: var(--neon-blue);
            transition: var(--transition);
        }

        .float-item:hover svg {
            fill: #000;
        }

        /* 浮动二维码展示 */
        .float-qr-pop {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: var(--bg-dark);
            border: 1px solid var(--neon-blue);
            padding: 15px;
            border-radius: 12px;
            display: none;
            box-shadow: 0 5px 25px rgba(0,242,254,0.3);
            text-align: center;
            width: 140px;
        }

        .float-qr-pop img {
            width: 110px;
            height: 110px;
            border-radius: 4px;
            margin-bottom: 5px;
        }

        .float-qr-pop p {
            font-size: 0.75rem;
            color: var(--text-light);
        }

        .float-item:hover .float-qr-pop {
            display: block;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            h1.hero-title {
                font-size: 2.2rem;
            }
            .contact-wrapper {
                grid-template-columns: 1fr;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--bg-dark);
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                flex-direction: column;
                padding: 20px;
                gap: 15px;
                text-align: center;
            }
            .nav-menu.show {
                display: flex;
            }
            .nav-toggle {
                display: flex;
            }
        }

        @media (max-width: 768px) {
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .intro-block {
                flex-direction: column;
            }
        }