:root {
            --su4j14-primary: #ff8c00;
            --su4j14-secondary: #2e5bff;
            --su4j14-bg-dark: #0a0e17;
            --su4j14-bg-card: #161c2d;
            --su4j14-text-main: #e2e8f0;
            --su4j14-text-muted: #94a3b8;
            --su4j14-accent-green: #10b981;
            --su4j14-accent-red: #ef4444;
            --su4j14-accent-yellow: #f59e0b;
            --su4j14-container-width: 1100px;
            --su4j14-spacing-unit: 8px;
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            background-color: var(--su4j14-bg-dark);
            color: var(--su4j14-text-main);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* Navigation */
        .su4j14-nav-wrapper {
            position: fixed;
            top: 24px;
            left: 50%;
            transform: translateX(-50%);
            width: 95%;
            max-width: var(--su4j14-container-width);
            z-index: 1000;
        }

        .su4j14-header {
            background: rgba(22, 28, 45, 0.8);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 16px;
            padding: 12px 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }

        .su4j14-logo {
            min-width: 0;
            display: flex;
            align-items: center;
        }

        .su4j14-logo img {
            height: 32px;
            width: auto;
        }

        .su4j14-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            list-style: none;
        }

        .su4j14-nav-item a {
            color: var(--su4j14-text-muted);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 8px 4px;
            position: relative;
        }

        .su4j14-nav-item a:hover {
            color: var(--su4j14-primary);
        }

        .su4j14-nav-item a.active {
            color: var(--su4j14-text-main);
        }

        .su4j14-nav-item a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--su4j14-primary);
            border-radius: 2px;
        }

        /* Hero Section */
        .su4j14-hero {
            padding: 160px 24px 80px;
            background: radial-gradient(circle at 10% 20%, rgba(46, 91, 255, 0.1) 0%, transparent 40%),
                        radial-gradient(circle at 90% 80%, rgba(255, 140, 0, 0.05) 0%, transparent 40%);
            text-align: center;
        }

        .su4j14-hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .su4j14-badge {
            display: inline-block;
            background: rgba(255, 140, 0, 0.1);
            color: var(--su4j14-primary);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(255, 140, 0, 0.2);
        }

        .su4j14-hero h1 {
            font-size: clamp(2rem, 5vw, 3.5rem);
            line-height: 1.1;
            margin-bottom: 24px;
            font-weight: 800;
            background: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .su4j14-hero p {
            font-size: clamp(1.1rem, 2vw, 1.25rem);
            color: var(--su4j14-text-muted);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
            word-break: break-word;
        }

        /* Tutorial Workflow Section */
        .su4j14-workflow {
            padding: 80px 24px;
            max-width: var(--su4j14-container-width);
            margin: 0 auto;
        }

        .su4j14-section-title {
            text-align: center;
            margin-bottom: 64px;
        }

        .su4j14-section-title h2 {
            font-size: clamp(1.5rem, 4vw, 2.5rem);
            margin-bottom: 16px;
        }

        .su4j14-steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .su4j14-step-card {
            background: var(--su4j14-bg-card);
            border-radius: 20px;
            padding: 40px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: transform 0.3s ease, border-color 0.3s ease;
            position: relative;
            min-width: 0;
        }

        .su4j14-step-card:hover {
            transform: translateY(-8px);
            border-color: var(--su4j14-primary);
        }

        .su4j14-step-number {
            font-size: 3rem;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.03);
            position: absolute;
            top: 20px;
            right: 30px;
        }

        .su4j14-step-phase {
            color: var(--su4j14-primary);
            font-weight: 700;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 12px;
            display: block;
        }

        .su4j14-step-card h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: #fff;
        }

        .su4j14-step-action {
            color: var(--su4j14-text-muted);
            font-size: 1rem;
            line-height: 1.7;
        }

        /* Technology Highlights */
        .su4j14-tech-section {
            padding: 96px 24px;
            background: rgba(46, 91, 255, 0.03);
        }

        .su4j14-tech-container {
            max-width: var(--su4j14-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
        }

        .su4j14-tech-visual {
            flex: 1;
            min-width: 300px;
            position: relative;
        }

        .su4j14-tech-list {
            flex: 1.2;
            min-width: 300px;
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .su4j14-tech-item {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            min-width: 0;
        }

        .su4j14-tech-icon {
            width: 48px;
            height: 48px;
            background: var(--su4j14-primary);
            border-radius: 12px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: #fff;
        }

        .su4j14-tech-text {
            flex: 1;
            min-width: 240px;
        }

        .su4j14-tech-text h4 {
            font-size: 1.25rem;
            margin-bottom: 8px;
            color: var(--su4j14-primary);
        }

        .su4j14-tech-benefit {
            display: block;
            margin-top: 8px;
            color: var(--su4j14-accent-green);
            font-size: 0.9rem;
            font-weight: 600;
        }

        /* Tier Architecture */
        .su4j14-tiers {
            padding: 96px 24px;
            max-width: var(--su4j14-container-width);
            margin: 0 auto;
        }

        .su4j14-tiers-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
        }

        .su4j14-tier-card {
            flex: 1;
            min-width: 300px;
            background: var(--su4j14-bg-card);
            border-radius: 24px;
            padding: 40px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            flex-direction: column;
        }

        .su4j14-tier-card.featured {
            border: 2px solid var(--su4j14-secondary);
            transform: scale(1.05);
            box-shadow: 0 20px 40px rgba(46, 91, 255, 0.15);
        }

        .su4j14-tier-name {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .su4j14-tier-user {
            color: var(--su4j14-text-muted);
            font-size: 0.9rem;
            margin-bottom: 32px;
        }

        .su4j14-feature-list {
            list-style: none;
            margin-bottom: 40px;
            flex-grow: 1;
        }

        .su4j14-feature-list li {
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.95rem;
            color: var(--su4j14-text-main);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .su4j14-feature-list li::before {
            content: '✓';
            color: var(--su4j14-accent-green);
            font-weight: bold;
        }

        /* Dynamic Content */
        .su4j14-latest-news {
            padding: 80px 24px;
            background: #0d121f;
        }

        .su4j14-news-container {
            max-width: var(--su4j14-container-width);
            margin: 0 auto;
        }

        /* Footer */
        .su4j14-footer {
            padding: 80px 24px 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            background: var(--su4j14-bg-dark);
        }

        .su4j14-footer-content {
            max-width: var(--su4j14-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .su4j14-footer-brand {
            flex: 1;
            min-width: 250px;
        }

        .su4j14-footer-brand h2 {
            font-size: 1.8rem;
            color: var(--su4j14-primary);
            margin-bottom: 16px;
        }

        .su4j14-footer-text {
            color: var(--su4j14-text-muted);
            font-size: 0.9rem;
            max-width: 400px;
        }

        .su4j14-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
        }

        .su4j14-footer-group h5 {
            color: #fff;
            margin-bottom: 24px;
            font-size: 1rem;
        }

        .su4j14-footer-group ul {
            list-style: none;
        }

        .su4j14-footer-group ul li {
            margin-bottom: 12px;
        }

        .su4j14-footer-group ul li a {
            color: var(--su4j14-text-muted);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.3s;
        }

        .su4j14-footer-group ul li a:hover {
            color: var(--su4j14-primary);
        }

        .su4j14-footer-bottom {
            max-width: var(--su4j14-container-width);
            margin: 64px auto 0;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
            color: var(--su4j14-text-muted);
            font-size: 0.85rem;
        }

        /* Responsiveness */
        @media (max-width: 768px) {
            .su4j14-header {
                flex-direction: column;
                gap: 16px;
                padding: 16px;
            }
            .su4j14-nav {
                justify-content: center;
                gap: 8px;
            }
            .su4j14-nav-item a {
                font-size: 0.85rem;
            }
            .su4j14-tier-card.featured {
                transform: scale(1);
            }
            .su4j14-hero {
                padding-top: 200px;
            }
        }

        /* Scanline Animation Effect */
        .su4j14-scan-effect {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--su4j14-primary), transparent);
            animation: su4j14-scan 3s linear infinite;
            z-index: 1;
        }

        @keyframes su4j14-scan {
            0% { top: 0; opacity: 0; }
            50% { opacity: 1; }
            100% { top: 100%; opacity: 0; }
        }