:root {
            --xa698d-primary: #D42F2F;
            --xa698d-primary-dark: #B72525;
            --xa698d-secondary: #1E293B;
            --xa698d-accent: #3B82F6;
            --xa698d-bg-light: #F8FAFC;
            --xa698d-text-main: #334155;
            --xa698d-text-muted: #64748B;
            --xa698d-white: #FFFFFF;
            --xa698d-glass: rgba(255, 255, 255, 0.85);
            --xa698d-shadow: 0 10px 30px -10px rgba(0,0,0,0.1);
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--xa698d-text-main);
            background-color: var(--xa698d-bg-light);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* Typography */
        h1, h2, h3, h4 {
            color: var(--xa698d-secondary);
            font-weight: 700;
            line-height: 1.3;
            white-space: normal;
        }

        p {
            word-break: break-word;
            overflow-wrap: break-word;
            line-height: clamp(1.6, 2vw, 1.8);
        }

        a {
            text-decoration: none;
            transition: all 0.3s ease;
        }

        /* Layout */
        .xa698d-container {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .xa698d-section {
            padding: 96px 0;
            display: flex;
            flex-wrap: wrap;
        }

        /* Navigation */
        .xa698d-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--xa698d-glass);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding: 16px 0;
        }

        .xa698d-nav-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .xa698d-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .xa698d-logo img {
            height: 32px;
            display: block;
        }

        .xa698d-menu {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            list-style: none;
            align-items: center;
        }

        .xa698d-menu-item a {
            font-size: 15px;
            font-weight: 500;
            color: var(--xa698d-text-main);
            padding: 8px 4px;
            position: relative;
        }

        .xa698d-menu-item a:hover,
        .xa698d-menu-item.xa698d-active a {
            color: var(--xa698d-primary);
        }

        .xa698d-menu-item.xa698d-active a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--xa698d-primary);
        }

        /* Hero Section */
        .xa698d-hero {
            position: relative;
            padding-top: 160px;
            background: linear-gradient(135deg, #fff 0%, #f1f5f9 100%);
            overflow: hidden;
        }

        .xa698d-hero-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .xa698d-hero-text {
            flex: 1 1 500px;
            min-width: 0;
        }

        .xa698d-hero-visual {
            flex: 1 1 500px;
            min-width: 0;
            position: relative;
        }

        .xa698d-hero-title {
            font-size: clamp(2.5rem, 5vw, 3.5rem);
            margin-bottom: 24px;
            background: linear-gradient(to right, var(--xa698d-secondary), var(--xa698d-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .xa698d-hero-subtitle {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
            color: var(--xa698d-text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .xa698d-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .xa698d-btn {
            padding: 16px 32px;
            border-radius: 50px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: var(--xa698d-shadow);
        }

        .xa698d-btn-primary {
            background: var(--xa698d-primary);
            color: var(--xa698d-white);
        }

        .xa698d-btn-primary:hover {
            background: var(--xa698d-primary-dark);
            transform: translateY(-2px);
        }

        .xa698d-hero-image {
            width: 100%;
            border-radius: 24px;
            box-shadow: 20px 20px 60px rgba(0,0,0,0.1);
            transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
        }

        /* Tech Layers */
        .xa698d-layers-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            width: 100%;
        }

        .xa698d-layer-card {
            background: var(--xa698d-white);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid rgba(0,0,0,0.05);
            transition: all 0.4s ease;
        }

        .xa698d-layer-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            border-color: var(--xa698d-primary);
        }

        .xa698d-layer-icon {
            width: 64px;
            height: 64px;
            margin-bottom: 24px;
            border-radius: 12px;
            object-fit: cover;
        }

        .xa698d-layer-title {
            font-size: 20px;
            margin-bottom: 16px;
        }

        .xa698d-tech-stack {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .xa698d-tag {
            background: #F1F5F9;
            color: var(--xa698d-text-muted);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
        }

        /* Feature Showcases */
        .xa698d-feature-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
            margin-bottom: 80px;
        }

        .xa698d-feature-row.xa698d-reverse {
            flex-direction: row-reverse;
        }

        .xa698d-feature-text {
            flex: 1 1 450px;
            min-width: 0;
        }

        .xa698d-feature-img-box {
            flex: 1 1 450px;
            min-width: 0;
        }

        .xa698d-feature-img {
            width: 100%;
            border-radius: 16px;
            object-fit: cover;
        }

        /* Version Matrix Table */
        .xa698d-matrix-section {
            background: var(--xa698d-secondary);
            color: var(--xa698d-white);
            border-radius: 40px;
            margin: 40px 24px;
            padding: 80px 40px;
        }

        .xa698d-matrix-title {
            color: var(--xa698d-white);
            text-align: center;
            margin-bottom: 60px;
            font-size: 32px;
        }

        .xa698d-matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .xa698d-matrix-card {
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            padding: 32px;
            border-radius: 24px;
            backdrop-filter: blur(10px);
        }

        .xa698d-matrix-edition {
            color: var(--xa698d-primary);
            font-size: 14px;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 8px;
            display: block;
        }

        .xa698d-matrix-specs {
            margin-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 16px;
        }

        .xa698d-spec-item {
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            margin-bottom: 8px;
            color: rgba(255,255,255,0.6);
        }

        /* Dynamic Articles */
        .xa698d-article-list {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            width: 100%;
        }

        .xa698d-article-item {
            flex: 1 1 350px;
            min-width: 0;
            background: var(--xa698d-white);
            padding: 24px;
            border-radius: 16px;
            box-shadow: var(--xa698d-shadow);
        }

        /* Footer */
        .xa698d-footer {
            background: #0F172A;
            color: rgba(255,255,255,0.7);
            padding: 80px 0 40px;
        }

        .xa698d-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .xa698d-footer-brand h3 {
            color: var(--xa698d-white);
            margin-bottom: 24px;
        }

        .xa698d-footer-links h4 {
            color: var(--xa698d-white);
            margin-bottom: 24px;
            font-size: 16px;
        }

        .xa698d-footer-links ul {
            list-style: none;
        }

        .xa698d-footer-links li {
            margin-bottom: 12px;
        }

        .xa698d-footer-links a {
            color: rgba(255,255,255,0.5);
            font-size: 14px;
        }

        .xa698d-footer-links a:hover {
            color: var(--xa698d-primary);
        }

        .xa698d-footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 40px;
            text-align: center;
            font-size: 12px;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .xa698d-section { padding: 64px 0; }
            .xa698d-menu { display: none; } /* Simplified for demo */
            .xa698d-hero-visual { order: -1; }
            .xa698d-feature-row { flex-direction: column !important; }
            .xa698d-matrix-section { margin: 20px 12px; padding: 40px 20px; }
        }