/* CSS Variables & Reset */
        :root {
            --x393oe-primary: #0066ff;
            --x393oe-secondary: #00d4ff;
            --x393oe-accent: #00f2fe;
            --x393oe-dark: #0f172a;
            --x393oe-darker: #020617;
            --x393oe-light: #f8fafc;
            --x393oe-gray: #94a3b8;
            --x393oe-success: #10b981;
            --x393oe-spacing: 8px;
            --x393oe-container-width: 1300px;
        }

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

        body {
            font-family: "Inter", "Microsoft YaHei", sans-serif;
            background-color: var(--x393oe-darker);
            color: var(--x393oe-light);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* Fluid Typography */
        h1 { font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem); line-height: 1.1; font-weight: 800; }
        h2 { font-size: clamp(1.8rem, 3vw + 1rem, 2.8rem); line-height: 1.2; font-weight: 700; margin-bottom: 32px; }
        h3 { font-size: clamp(1.3rem, 2vw + 0.5rem, 1.8rem); line-height: 1.3; font-weight: 600; }
        p { font-size: clamp(1rem, 0.5vw + 0.8rem, 1.15rem); line-height: 1.7; color: var(--x393oe-gray); }

        /* Navigation */
        .x393oe-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(2, 6, 23, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .x393oe-nav-container {
            max-width: var(--x393oe-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 16px 24px;
        }

        .x393oe-logo {
            min-width: 0;
            flex-shrink: 0;
        }

        .x393oe-logo img {
            height: 40px;
            display: block;
        }

        .x393oe-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
        }

        .x393oe-nav-link {
            text-decoration: none;
            color: var(--x393oe-gray);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 16px;
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .x393oe-nav-link:hover {
            color: var(--x393oe-primary);
            background: rgba(0, 102, 255, 0.1);
        }

        .x393oe-nav-link.active {
            color: var(--x393oe-light);
            background: var(--x393oe-primary);
        }

        /* Layout Helpers */
        .x393oe-section {
            padding: 96px 24px;
            max-width: var(--x393oe-container-width);
            margin: 0 auto;
            display: block;
        }

        .x393oe-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            width: 100%;
        }

        .x393oe-flex-center {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 48px;
        }

        /* Hero Section - Unique Card Style */
        .x393oe-hero {
            padding-top: 180px;
            padding-bottom: 96px;
            text-align: center;
            position: relative;
        }

        .x393oe-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100vw;
            height: 100%;
            background: radial-gradient(circle at 50% 30%, rgba(0, 102, 255, 0.15) 0%, transparent 70%);
            z-index: -1;
        }

        .x393oe-hero-badge {
            display: inline-block;
            background: rgba(0, 102, 255, 0.1);
            color: var(--x393oe-primary);
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(0, 102, 255, 0.2);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .x393oe-hero h1 span {
            display: block;
            background: linear-gradient(90deg, var(--x393oe-primary), var(--x393oe-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .x393oe-hero-desc {
            max-width: 800px;
            margin: 32px auto 0;
            font-size: 1.25rem;
        }

        /* Modes Section */
        .x393oe-mode-card {
            background: var(--x393oe-dark);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 40px;
            border-radius: 24px;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            position: relative;
            overflow: hidden;
            min-width: 0;
        }

        .x393oe-mode-card:hover {
            transform: translateY(-12px);
            border-color: var(--x393oe-primary);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }

        .x393oe-mode-tag {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--x393oe-primary);
            margin-bottom: 16px;
            display: block;
        }

        .x393oe-mode-logic {
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px dashed rgba(255, 255, 255, 0.1);
            font-size: 0.95rem;
        }

        /* Technical Pillars Section */
        .x393oe-pillar-item {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-bottom: 64px;
            align-items: center;
        }

        .x393oe-pillar-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .x393oe-pillar-content {
            flex: 1;
            min-width: 320px;
        }

        .x393oe-pillar-visual {
            flex: 1;
            min-width: 320px;
            background: linear-gradient(135deg, var(--x393oe-dark), #1e293b);
            height: 240px;
            border-radius: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .x393oe-benefit-box {
            background: rgba(16, 185, 129, 0.1);
            border-left: 4px solid var(--x393oe-success);
            padding: 16px 20px;
            margin-top: 24px;
            border-radius: 0 12px 12px 0;
        }

        .x393oe-benefit-box strong {
            color: var(--x393oe-success);
            display: block;
            margin-bottom: 4px;
        }

        /* FAQ Section */
        .x393oe-faq-item {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 32px;
            border-radius: 16px;
            margin-bottom: 24px;
        }

        .x393oe-faq-item h3 {
            color: var(--x393oe-primary);
            margin-bottom: 12px;
        }

        /* Footer */
        .x393oe-footer {
            background: var(--x393oe-darker);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 64px 24px;
            text-align: center;
        }

        .x393oe-footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--x393oe-light);
            margin-bottom: 16px;
        }

        .x393oe-footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px;
            margin-bottom: 32px;
            list-style: none;
        }

        .x393oe-footer-links a {
            color: var(--x393oe-gray);
            text-decoration: none;
            transition: color 0.3s;
        }

        .x393oe-footer-links a:hover {
            color: var(--x393oe-primary);
        }

        .x393oe-copyright {
            color: #475569;
            font-size: 0.9rem;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .x393oe-nav-menu {
                display: none; /* In real project, implement a mobile burger menu */
            }
            .x393oe-section {
                padding: 64px 20px;
            }
            .x393oe-pillar-item, .x393oe-pillar-item:nth-child(even) {
                flex-direction: column;
            }
        }