:root {
            --rfq3-primary: #0056b3;
            --rfq3-secondary: #f39c12;
            --rfq3-accent: #27ae60;
            --rfq3-bg-light: #f8f9fa;
            --rfq3-text-dark: #2c3e50;
            --rfq3-text-muted: #7f8c8d;
            --rfq3-white: #ffffff;
            --rfq3-diff-add: #e6ffec;
            --rfq3-diff-remove: #ffeef0;
            --rfq3-spacing-unit: 8px;
            --rfq3-max-width: 1300px;
        }

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

        body {
            font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            color: var(--rfq3-text-dark);
            background-color: var(--rfq3-white);
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* Typography */
        h1, h2, h3, h4 {
            line-height: 1.3;
            font-weight: 700;
            white-space: normal;
        }

        .rfq3-fluid-h1 { font-size: clamp(2rem, 5vw + 1rem, 3.5rem); }
        .rfq3-fluid-h2 { font-size: clamp(1.5rem, 3vw + 1rem, 2.5rem); }
        .rfq3-fluid-p { 
            font-size: clamp(1rem, 1vw + 0.5rem, 1.25rem); 
            max-width: 800px;
            overflow-wrap: break-word;
        }

        /* Layout Helpers */
        .rfq3-container {
            max-width: var(--rfq3-max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .rfq3-flex {
            display: flex;
            flex-wrap: wrap;
        }

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

        /* Navigation */
        .rfq3-nav-wrapper {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .rfq3-nav-container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 12px 24px;
            max-width: var(--rfq3-max-width);
            margin: 0 auto;
        }

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

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

        .rfq3-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
        }

        .rfq3-menu-item a {
            text-decoration: none;
            color: var(--rfq3-text-dark);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
        }

        .rfq3-menu-item a:hover {
            background: var(--rfq3-bg-light);
            color: var(--rfq3-primary);
        }

        .rfq3-menu-item a.rfq3-active {
            color: var(--rfq3-primary);
            background: rgba(0, 86, 179, 0.08);
        }

        /* Hero Section - Asymmetric Layout */
        .rfq3-hero {
            padding: 96px 0 64px;
            background: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%);
            position: relative;
            overflow: hidden;
        }

        .rfq3-hero::before {
            content: "";
            position: absolute;
            top: -10%;
            right: -5%;
            width: 40%;
            height: 120%;
            background: rgba(0, 86, 179, 0.03);
            transform: skewX(-15deg);
            z-index: 0;
        }

        .rfq3-hero-content {
            position: relative;
            z-index: 1;
            flex-basis: 60%;
        }

        .rfq3-hero-badge {
            display: inline-block;
            background: var(--rfq3-primary);
            color: white;
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 14px;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .rfq3-hero-title {
            margin-bottom: 24px;
            color: #1a2a3a;
        }

        .rfq3-hero-subtitle {
            margin-bottom: 40px;
            color: var(--rfq3-text-muted);
        }

        /* Alternatives Grid */
        .rfq3-section {
            padding: 80px 0;
        }

        .rfq3-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

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

        .rfq3-card {
            background: var(--rfq3-white);
            border-radius: 16px;
            padding: 32px;
            border: 1px solid rgba(0,0,0,0.05);
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .rfq3-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.08);
        }

        .rfq3-card-icon {
            font-size: 40px;
            margin-bottom: 24px;
            color: var(--rfq3-primary);
        }

        .rfq3-card-title {
            margin-bottom: 16px;
            font-size: 1.5rem;
        }

        .rfq3-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }

        .rfq3-tag {
            font-size: 12px;
            padding: 2px 10px;
            background: var(--rfq3-bg-light);
            border-radius: 4px;
            color: var(--rfq3-text-muted);
        }

        /* Comparison Specs - Tech Style */
        .rfq3-specs-box {
            background: #1e272e;
            color: #d2dae2;
            border-radius: 12px;
            padding: 48px;
            margin-top: 48px;
        }

        .rfq3-spec-item {
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .rfq3-spec-item:last-child { border: none; }

        .rfq3-spec-label {
            flex: 0 0 240px;
            color: var(--rfq3-secondary);
            font-weight: 600;
            text-transform: uppercase;
            font-size: 14px;
        }

        .rfq3-spec-value {
            flex: 1;
            min-width: 300px;
        }

        .rfq3-spec-value h4 {
            color: var(--rfq3-white);
            margin-bottom: 8px;
        }

        /* Dynamic Content Area */
        .rfq3-articles {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .rfq3-article-item {
            padding: 20px;
            border-left: 4px solid var(--rfq3-primary);
            background: var(--rfq3-bg-light);
        }

        /* Footer */
        .rfq3-footer {
            background: #f1f2f6;
            padding: 64px 0 32px;
            border-top: 1px solid rgba(0,0,0,0.05);
        }

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

        .rfq3-footer-brand {
            flex: 0 0 300px;
        }

        .rfq3-brand-name {
            font-size: 24px;
            font-weight: 800;
            color: var(--rfq3-primary);
            margin-bottom: 16px;
        }

        .rfq3-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
        }

        .rfq3-footer-col h5 {
            margin-bottom: 24px;
            font-size: 16px;
            color: var(--rfq3-text-dark);
        }

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

        .rfq3-footer-col li {
            margin-bottom: 12px;
        }

        .rfq3-footer-col a {
            text-decoration: none;
            color: var(--rfq3-text-muted);
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .rfq3-copyright {
            text-align: center;
            padding-top: 32px;
            border-top: 1px solid rgba(0,0,0,0.05);
            color: var(--rfq3-text-muted);
            font-size: 13px;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .rfq3-nav-container { flex-direction: column; gap: 16px; }
            .rfq3-menu { justify-content: center; gap: 8px; }
            .rfq3-hero { padding: 48px 0; }
            .rfq3-hero-content { flex-basis: 100%; text-align: center; }
            .rfq3-specs-box { padding: 24px; }
            .rfq3-spec-label { flex: 0 0 100%; }
        }

        /* Button */
        .rfq3-btn {
            display: inline-block;
            padding: 14px 32px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .rfq3-btn-primary {
            background: linear-gradient(to right, var(--rfq3-primary), #007bff);
            color: white;
            box-shadow: 0 4px 15px rgba(0, 86, 179, 0.3);
        }

        .rfq3-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 86, 179, 0.4);
        }