:root {
            --rfq3-primary: #0056b3;
            --rfq3-accent: #28a745;
            --rfq3-danger: #dc3545;
            --rfq3-bg-light: #f8f9fa;
            --rfq3-text-dark: #212529;
            --rfq3-text-gray: #6c757d;
            --rfq3-white: #ffffff;
            --rfq3-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --rfq3-transition: all 0.3s ease;
        }

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

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

        /* 导航栏样式 */
        .rfq3-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding: 12px 0;
        }

        .rfq3-nav-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .rfq3-logo {
            flex: 0 0 auto;
        }

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

        .rfq3-nav-menu {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 8px;
            min-width: 0;
        }

        .rfq3-nav-menu li a {
            text-decoration: none;
            color: var(--rfq3-text-dark);
            font-size: 0.95rem;
            padding: 8px 14px;
            border-radius: 6px;
            transition: var(--rfq3-transition);
            font-weight: 500;
        }

        .rfq3-nav-menu li a:hover {
            background: rgba(0, 86, 179, 0.05);
            color: var(--rfq3-primary);
        }

        .rfq3-nav-menu li a.active {
            color: var(--rfq3-primary);
            background: rgba(0, 86, 179, 0.1);
        }

        /* Hero 区块 - 独特非对称布局 */
        .rfq3-hero {
            padding: 160px 24px 80px;
            background: radial-gradient(circle at top right, #eef2f7 0%, #ffffff 70%);
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 70vh;
        }

        .rfq3-hero-content {
            max-width: 1100px;
            width: 100%;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .rfq3-hero-text {
            flex: 1;
            min-width: 320px;
        }

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

        .rfq3-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.35rem);
            color: var(--rfq3-text-gray);
            margin-bottom: 32px;
            max-width: 600px;
        }

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

        .rfq3-patch-card {
            background: var(--rfq3-white);
            padding: 32px;
            border-radius: 24px;
            box-shadow: var(--rfq3-shadow);
            border: 1px solid rgba(0,0,0,0.03);
            transform: perspective(1000px) rotateY(-5deg);
            transition: var(--rfq3-transition);
        }

        .rfq3-patch-card:hover {
            transform: perspective(1000px) rotateY(0deg) translateY(-10px);
        }

        /* 核心规格区块 - 网格布局 */
        .rfq3-specs-section {
            padding: 96px 24px;
            background: #fff;
        }

        .rfq3-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .rfq3-section-tag {
            text-transform: uppercase;
            color: var(--rfq3-primary);
            font-weight: 700;
            letter-spacing: 2px;
            display: block;
            margin-bottom: 16px;
            text-align: center;
        }

        .rfq3-section-title {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 64px;
            font-weight: 700;
        }

        .rfq3-specs-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .rfq3-spec-card {
            padding: 40px;
            border-radius: 16px;
            background: var(--rfq3-bg-light);
            transition: var(--rfq3-transition);
            border: 1px solid transparent;
        }

        .rfq3-spec-card:hover {
            background: var(--rfq3-white);
            border-color: var(--rfq3-primary);
            box-shadow: var(--rfq3-shadow);
            transform: translateY(-5px);
        }

        .rfq3-spec-icon {
            font-size: 2rem;
            margin-bottom: 24px;
            display: inline-block;
        }

        .rfq3-spec-name {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--rfq3-primary);
        }

        .rfq3-spec-desc {
            color: var(--rfq3-text-gray);
            font-size: 1rem;
            margin-bottom: 16px;
        }

        .rfq3-spec-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(0, 86, 179, 0.1);
            color: var(--rfq3-primary);
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* 补丁工作流区块 */
        .rfq3-workflow {
            padding: 96px 24px;
            background: #001529;
            color: white;
            border-radius: 40px;
            margin: 0 24px;
        }

        .rfq3-workflow-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            align-items: center;
        }

        .rfq3-workflow-text {
            flex: 1;
            min-width: 300px;
        }

        .rfq3-workflow-steps {
            flex: 1;
            min-width: 300px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .rfq3-step-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 24px;
            background: rgba(255,255,255,0.05);
            border-radius: 12px;
            transition: var(--rfq3-transition);
        }

        .rfq3-step-item:hover {
            background: rgba(255,255,255,0.1);
            transform: translateX(10px);
        }

        .rfq3-step-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--rfq3-accent);
            opacity: 0.5;
        }

        /* 动态内容区块 */
        .rfq3-dynamic-section {
            padding: 96px 24px;
        }

        .rfq3-article-list {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .rfq3-article-card {
            flex: 1;
            min-width: 300px;
            padding: 24px;
            border-bottom: 1px solid #eee;
        }

        /* 页脚 */
        .rfq3-footer {
            padding: 80px 24px 40px;
            background: var(--rfq3-bg-light);
            margin-top: 80px;
        }

        .rfq3-footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            justify-content: space-between;
        }

        .rfq3-footer-brand {
            flex: 1;
            min-width: 280px;
        }

        .rfq3-footer-brand h2 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--rfq3-primary);
        }

        .rfq3-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            flex: 2;
            min-width: 300px;
        }

        .rfq3-link-group {
            flex: 1;
            min-width: 140px;
        }

        .rfq3-link-group h4 {
            margin-bottom: 20px;
            font-size: 1.1rem;
        }

        .rfq3-link-group ul {
            list-style: none;
        }

        .rfq3-link-group ul li {
            margin-bottom: 12px;
        }

        .rfq3-link-group ul li a {
            text-decoration: none;
            color: var(--rfq3-text-gray);
            transition: var(--rfq3-transition);
        }

        .rfq3-link-group ul li a:hover {
            color: var(--rfq3-primary);
        }

        .rfq3-copyright {
            text-align: center;
            padding-top: 40px;
            margin-top: 40px;
            border-top: 1px solid rgba(0,0,0,0.05);
            color: var(--rfq3-text-gray);
            font-size: 0.9rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .rfq3-nav-menu {
                display: none; /* 简化移动端，实际项目中应有汉堡菜单 */
            }
            .rfq3-hero {
                padding-top: 120px;
                text-align: center;
            }
            .rfq3-hero-content {
                flex-direction: column;
            }
            .rfq3-workflow {
                margin: 0 12px;
                border-radius: 20px;
                padding: 48px 24px;
            }
        }