:root {
            --rfq3-primary: #004c99;
            --rfq3-secondary: #ff9900;
            --rfq3-bg-light: #f8fafc;
            --rfq3-text-dark: #1e293b;
            --rfq3-text-muted: #64748b;
            --rfq3-white: #ffffff;
            --rfq3-accent: #e2e8f0;
            --rfq3-shadow: 0 10px 30px rgba(0, 76, 153, 0.1);
            --rfq3-spacing: 8px;
        }

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

        body {
            font-family: "Inter", "Segoe UI", "Microsoft YaHei", sans-serif;
            background-color: var(--rfq3-bg-light);
            color: var(--rfq3-text-dark);
            line-height: 1.8;
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* 布局容器 */
        .rfq3-container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .rfq3-header {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            box-shadow: 0 2px 15px rgba(0,0,0,0.05);
            border-bottom: 1px solid var(--rfq3-accent);
        }

        .rfq3-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
        }

        .rfq3-logo {
            min-width: 0;
            flex-shrink: 0;
        }

        .rfq3-logo img {
            height: 45px;
            width: auto;
            display: block;
        }

        .rfq3-nav {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 4px;
        }

        .rfq3-nav-item {
            min-width: 0;
        }

        .rfq3-nav-link {
            text-decoration: none;
            color: var(--rfq3-text-dark);
            font-size: 0.95rem;
            padding: 8px 14px;
            border-radius: 6px;
            transition: all 0.3s ease;
            display: block;
            font-weight: 500;
        }

        .rfq3-nav-link:hover {
            color: var(--rfq3-primary);
            background: rgba(0, 76, 153, 0.05);
        }

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

        /* Hero 区 - 独特不对称布局 */
        .rfq3-hero {
            padding: 160px 0 80px;
            background: linear-gradient(135deg, #004c99 0%, #002d5c 100%);
            color: var(--rfq3-white);
            position: relative;
            clip-path: polygon(0 0, 100% 0, 100% 85%, 0 100%);
        }

        .rfq3-hero-content {
            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;
            font-weight: 800;
            word-break: break-word;
        }

        .rfq3-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.4rem);
            opacity: 0.9;
            margin-bottom: 32px;
            max-width: 600px;
        }

        .rfq3-hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.1);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
            margin-bottom: 16px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        /* 报告规格区块 */
        .rfq3-specs-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            margin-top: -60px;
            position: relative;
            z-index: 10;
        }

        .rfq3-spec-card {
            background: var(--rfq3-white);
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--rfq3-shadow);
            transition: transform 0.3s ease;
            border-top: 4px solid var(--rfq3-primary);
        }

        .rfq3-spec-card:hover {
            transform: translateY(-8px);
        }

        .rfq3-spec-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
            color: var(--rfq3-secondary);
        }

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

        .rfq3-spec-desc {
            color: var(--rfq3-text-muted);
            font-size: 1rem;
        }

        /* 核心特性详情 */
        .rfq3-feature-section {
            padding: 96px 0;
        }

        .rfq3-feature-block {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            align-items: center;
            margin-bottom: 80px;
        }

        .rfq3-feature-block:nth-child(even) {
            flex-direction: row-reverse;
        }

        .rfq3-feature-image {
            flex: 1;
            min-width: 300px;
            background: #eef2f6;
            height: 400px;
            border-radius: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px dashed var(--rfq3-primary);
            position: relative;
        }

        .rfq3-feature-image::after {
            content: "REPORT PREVIEW";
            font-weight: bold;
            color: var(--rfq3-primary);
            opacity: 0.2;
            font-size: 2rem;
        }

        .rfq3-feature-info {
            flex: 1;
            min-width: 300px;
        }

        .rfq3-tag {
            color: var(--rfq3-secondary);
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
            display: block;
        }

        .rfq3-feature-info h3 {
            font-size: 2.2rem;
            margin-bottom: 24px;
            color: var(--rfq3-text-dark);
        }

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

        .rfq3-feature-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
        }

        .rfq3-feature-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--rfq3-secondary);
            font-weight: bold;
        }

        /* 动态内容区块 */
        .rfq3-dynamic-section {
            background: #f1f5f9;
            padding: 80px 0;
            border-radius: 40px;
            margin: 40px 0;
        }

        .rfq3-section-title {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 48px;
        }

        /* 页脚 */
        .rfq3-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 80px 0 40px;
            margin-top: 80px;
        }

        .rfq3-footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            justify-content: space-between;
        }

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

        .rfq3-footer-brand h2 {
            color: var(--rfq3-white);
            margin-bottom: 20px;
        }

        .rfq3-footer-links {
            flex: 2;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 24px;
        }

        .rfq3-footer-col h4 {
            color: var(--rfq3-white);
            margin-bottom: 20px;
        }

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

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

        .rfq3-footer-col a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s;
        }

        .rfq3-footer-col a:hover {
            color: var(--rfq3-secondary);
        }

        .rfq3-copyright {
            border-top: 1px solid #1e293b;
            margin-top: 60px;
            padding-top: 30px;
            text-align: center;
            font-size: 0.9rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .rfq3-nav {
                justify-content: center;
                padding: 10px 0;
            }
            .rfq3-hero {
                padding: 120px 0 60px;
                text-align: center;
            }
            .rfq3-hero-content {
                justify-content: center;
            }
            .rfq3-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
        }