:root {
            --wba18-primary: #3d7eff;
            --wba18-bg: #0a0a0c;
            --wba18-surface: #16161a;
            --wba18-text: #e1e1e6;
            --wba18-text-dim: #a1a1aa;
            --wba18-border: rgba(255, 255, 255, 0.1);
            --wba18-accent: #00f2fe;
            --wba18-gradient: linear-gradient(135deg, #3d7eff 0%, #00f2fe 100%);
            --wba18-container-width: 1100px;
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--wba18-bg);
            color: var(--wba18-text);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* Navigation */
        .wba18-nav-wrapper {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 10, 12, 0.8);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--wba18-border);
        }

        .wba18-nav-container {
            max-width: var(--wba18-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

        .wba18-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .wba18-logo img {
            height: 32px;
            width: auto;
            border-radius: 4px;
        }

        .wba18-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
            min-width: 0;
        }

        .wba18-menu-link {
            text-decoration: none;
            color: var(--wba18-text-dim);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s ease;
            padding: 8px 4px;
            position: relative;
        }

        .wba18-menu-link:hover, .wba18-menu-link.active {
            color: var(--wba18-text);
        }

        .wba18-menu-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--wba18-gradient);
        }

        /* Hero Tutorial Section */
        .wba18-hero {
            padding: 160px 24px 80px;
            text-align: center;
            background: radial-gradient(circle at 50% 0%, rgba(61, 126, 255, 0.15) 0%, transparent 50%);
        }

        .wba18-hero-inner {
            max-width: 800px;
            margin: 0 auto;
            min-width: 0;
        }

        .wba18-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            background: linear-gradient(to bottom, #fff, #a1a1aa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            word-break: break-word;
        }

        .wba18-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--wba18-text-dim);
            max-width: 600px;
            margin: 0 auto 40px;
            word-break: break-word;
        }

        /* Learning Path */
        .wba18-path-section {
            max-width: var(--wba18-container-width);
            margin: 0 auto;
            padding: 64px 24px;
        }

        .wba18-path-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            position: relative;
        }

        .wba18-path-step {
            flex: 1;
            min-width: 300px;
            background: var(--wba18-surface);
            border: 1px solid var(--wba18-border);
            border-radius: 24px;
            padding: 40px;
            transition: transform 0.3s ease, border-color 0.3s ease;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .wba18-path-step:hover {
            transform: translateY(-8px);
            border-color: var(--wba18-primary);
        }

        .wba18-step-number {
            font-family: monospace;
            color: var(--wba18-primary);
            font-size: 14px;
            letter-spacing: 2px;
            text-transform: uppercase;
        }

        .wba18-step-title {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
        }

        .wba18-step-desc {
            color: var(--wba18-text-dim);
            font-size: 16px;
            word-break: break-word;
        }

        /* Feature Focus Bento */
        .wba18-bento-section {
            max-width: var(--wba18-container-width);
            margin: 64px auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .wba18-bento-card {
            background: var(--wba18-surface);
            border-radius: 24px;
            padding: 32px;
            border: 1px solid var(--wba18-border);
            min-width: 0;
            overflow: hidden;
            position: relative;
        }

        .wba18-bento-card.wba18-wide {
            grid-column: span 2;
        }

        .wba18-code-preview {
            background: #000;
            border-radius: 12px;
            padding: 20px;
            font-family: 'Fira Code', monospace;
            font-size: 13px;
            margin-top: 24px;
            border: 1px solid rgba(255,255,255,0.05);
            color: #80adff;
            overflow-x: auto;
        }

        /* Content Section */
        .wba18-content-block {
            max-width: 800px;
            margin: 96px auto;
            padding: 0 24px;
        }

        .wba18-section-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(61, 126, 255, 0.1);
            color: var(--wba18-primary);
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .wba18-rich-text h2 {
            font-size: 32px;
            margin-bottom: 24px;
            color: #fff;
        }

        .wba18-rich-text p {
            margin-bottom: 24px;
            color: var(--wba18-text-dim);
        }

        /* Dynamic Section */
        .wba18-dynamic-area {
            background: #111114;
            padding: 80px 24px;
            border-top: 1px solid var(--wba18-border);
        }

        /* Footer */
        .wba18-footer {
            padding: 80px 24px;
            border-top: 1px solid var(--wba18-border);
            text-align: center;
        }

        .wba18-footer-brand {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .wba18-footer-copy {
            color: var(--wba18-text-dim);
            font-size: 14px;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .wba18-menu {
                display: none; /* Simplification for creative logic, usually a hamburger */
            }
            .wba18-bento-card.wba18-wide {
                grid-column: span 1;
            }
            .wba18-nav-container {
                justify-content: center;
            }
        }