:root {
            --rfq3-primary: #0066cc;
            --rfq3-secondary: #ff9900;
            --rfq3-accent: #2c3e50;
            --rfq3-bg-light: #f4f7f9;
            --rfq3-text-dark: #1a1a1a;
            --rfq3-text-muted: #666666;
            --rfq3-white: #ffffff;
            --rfq3-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --rfq3-radius: 16px;
            --rfq3-container-width: 1100px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            color: var(--rfq3-text-dark);
            background-color: var(--rfq3-bg-light);
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* 导航栏 */
        .rfq3-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            padding: 0 24px;
        }

        .rfq3-nav-container {
            max-width: var(--rfq3-container-width);
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            flex-wrap: wrap;
        }

        .rfq3-logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
        }

        .rfq3-logo img {
            height: 40px;
            width: auto;
        }

        .rfq3-nav-menu {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            min-width: 0;
        }

        .rfq3-nav-item {
            margin-left: 12px;
        }

        .rfq3-nav-link {
            text-decoration: none;
            color: var(--rfq3-accent);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            transition: all 0.3s ease;
            border-radius: 8px;
        }

        .rfq3-nav-link:hover {
            color: var(--rfq3-primary);
            background: rgba(0, 102, 204, 0.05);
        }

        .rfq3-nav-link.active {
            color: var(--rfq3-white);
            background: var(--rfq3-primary);
        }

        /* Hero 区块 - 独特非对称布局 */
        .rfq3-hero {
            padding: 160px 24px 80px;
            background: linear-gradient(135deg, #ffffff 0%, #eef2f7 100%);
            display: flex;
            justify-content: center;
            overflow: hidden;
        }

        .rfq3-hero-inner {
            max-width: var(--rfq3-container-width);
            width: 100%;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .rfq3-hero-content {
            flex: 1;
            min-width: 320px;
            word-break: break-word;
        }

        .rfq3-hero-tag {
            display: inline-block;
            background: var(--rfq3-secondary);
            color: var(--rfq3-white);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 14px;
            margin-bottom: 24px;
            font-weight: bold;
        }

        .rfq3-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            color: var(--rfq3-accent);
            margin-bottom: 24px;
            font-weight: 800;
        }

        .rfq3-hero-subtitle {
            font-size: clamp(1rem, 1.2vw + 0.5rem, 1.25rem);
            color: var(--rfq3-text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .rfq3-hero-image {
            flex: 1;
            min-width: 320px;
            position: relative;
        }

        .rfq3-hero-image img {
            width: 100%;
            height: auto;
            border-radius: var(--rfq3-radius);
            box-shadow: var(--rfq3-shadow);
            transform: perspective(1000px) rotateY(-10deg);
            transition: transform 0.5s ease;
        }

        .rfq3-hero-image:hover img {
            transform: perspective(1000px) rotateY(0deg);
        }

        /* 插件功能卡片区 */
        .rfq3-features {
            padding: 96px 24px;
            background: var(--rfq3-white);
        }

        .rfq3-section-head {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 64px;
        }

        .rfq3-section-title {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            margin-bottom: 16px;
            color: var(--rfq3-accent);
        }

        .rfq3-grid {
            max-width: var(--rfq3-container-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .rfq3-card {
            background: var(--rfq3-bg-light);
            padding: 40px;
            border-radius: var(--rfq3-radius);
            transition: all 0.4s ease;
            border: 1px solid rgba(0,0,0,0.05);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .rfq3-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--rfq3-shadow);
            border-color: var(--rfq3-primary);
        }

        .rfq3-card-icon {
            font-size: 32px;
            margin-bottom: 24px;
            color: var(--rfq3-primary);
        }

        .rfq3-card-title {
            font-size: 20px;
            margin-bottom: 16px;
            color: var(--rfq3-accent);
        }

        .rfq3-card-desc {
            font-size: 15px;
            color: var(--rfq3-text-muted);
            flex-grow: 1;
        }

        /* 图文交替区块 */
        .rfq3-content-block {
            padding: 96px 24px;
        }

        .rfq3-block-inner {
            max-width: var(--rfq3-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

        .rfq3-block-inner.reverse {
            flex-direction: row-reverse;
        }

        .rfq3-block-text {
            flex: 1;
            min-width: 300px;
            word-break: break-word;
        }

        .rfq3-block-media {
            flex: 1;
            min-width: 300px;
        }

        .rfq3-block-media img {
            width: 100%;
            height: auto;
            border-radius: var(--rfq3-radius);
            box-shadow: var(--rfq3-shadow);
        }

        .rfq3-block-h3 {
            font-size: 28px;
            margin-bottom: 24px;
            color: var(--rfq3-accent);
        }

        .rfq3-list {
            list-style: none;
            margin-top: 24px;
        }

        .rfq3-list-item {
            padding: 8px 0;
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .rfq3-list-item::before {
            content: "✓";
            color: var(--rfq3-primary);
            margin-right: 12px;
            font-weight: bold;
        }

        /* 动态资讯 */
        .rfq3-dynamic-section {
            background: #fff;
            padding: 96px 24px;
        }

        /* 按钮样式 */
        .rfq3-btn {
            display: inline-block;
            padding: 14px 32px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            text-align: center;
            cursor: pointer;
            border: none;
        }

        .rfq3-btn-primary {
            background: linear-gradient(90deg, var(--rfq3-primary), #004d99);
            color: var(--rfq3-white);
            box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
        }

        .rfq3-btn-primary:hover {
            transform: scale(1.05);
            box-shadow: 0 6px 20px rgba(0, 102, 204, 0.4);
        }

        /* 页脚 */
        .rfq3-footer {
            background: var(--rfq3-accent);
            color: var(--rfq3-white);
            padding: 80px 24px 40px;
        }

        .rfq3-footer-inner {
            max-width: var(--rfq3-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .rfq3-footer-brand {
            flex: 1;
            min-width: 250px;
        }

        .rfq3-footer-title {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .rfq3-footer-links {
            flex: 2;
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }

        .rfq3-footer-col {
            min-width: 140px;
        }

        .rfq3-footer-col h4 {
            margin-bottom: 20px;
            font-size: 16px;
            border-bottom: 2px solid var(--rfq3-secondary);
            display: inline-block;
            padding-bottom: 4px;
        }

        .rfq3-footer-list {
            list-style: none;
        }

        .rfq3-footer-list li {
            margin-bottom: 10px;
        }

        .rfq3-footer-list a {
            color: #bdc3c7;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

        .rfq3-footer-list a:hover {
            color: var(--rfq3-white);
        }

        .rfq3-copyright {
            text-align: center;
            margin-top: 64px;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 14px;
            color: #7f8c8d;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .rfq3-nav-container {
                height: auto;
                padding: 16px 0;
            }
            .rfq3-nav-menu {
                justify-content: center;
                margin-top: 16px;
            }
            .rfq3-nav-item {
                margin: 4px;
            }
            .rfq3-hero {
                padding: 120px 24px 60px;
                text-align: center;
            }
            .rfq3-hero-inner {
                flex-direction: column;
            }
            .rfq3-hero-subtitle {
                margin: 0 auto 40px;
            }
            .rfq3-hero-image img {
                transform: none;
            }
            .rfq3-block-inner {
                flex-direction: column !important;
                gap: 32px;
            }
        }