:root {
            --wba18-bg: #050505;
            --wba18-card-bg: #0f0f0f;
            --wba18-text-primary: #ffffff;
            --wba18-text-secondary: #a1a1aa;
            --wba18-accent: #3eaf7c;
            --wba18-accent-glow: rgba(62, 175, 124, 0.3);
            --wba18-border: rgba(255, 255, 255, 0.08);
            --wba18-font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            --wba18-container-max: 1320px;
        }

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

        body {
            background-color: var(--wba18-bg);
            color: var(--wba18-text-primary);
            font-family: var(--wba18-font-main);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* Navigation */
        .wba18-nav-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(5, 5, 5, 0.8);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--wba18-border);
        }

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

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

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

        .wba18-menu {
            display: flex;
            gap: 24px;
            list-style: none;
            flex-wrap: wrap;
            min-width: 0;
        }

        .wba18-menu-item a {
            text-decoration: none;
            color: var(--wba18-text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

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

        .wba18-menu-item a.wba18-active {
            position: relative;
        }

        .wba18-menu-item a.wba18-active::after {
            content: '';
            position: absolute;
            bottom: -25px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--wba18-accent);
            box-shadow: 0 0 10px var(--wba18-accent-glow);
        }

        /* Hero Section */
        .wba18-hero {
            padding: 160px 24px 80px;
            text-align: center;
            background: radial-gradient(circle at 50% 0%, rgba(62, 175, 124, 0.15) 0%, transparent 50%);
            position: relative;
        }

        .wba18-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: linear-gradient(var(--wba18-border) 1px, transparent 1px), 
                              linear-gradient(90deg, var(--wba18-border) 1px, transparent 1px);
            background-size: 40px 40px;
            mask-image: radial-gradient(ellipse at center, black, transparent 80%);
            z-index: -1;
            opacity: 0.3;
        }

        .wba18-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
            word-break: break-word;
        }

        .wba18-hero-subtitle {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            color: var(--wba18-text-secondary);
            max-width: 800px;
            margin: 0 auto 48px;
            word-break: break-word;
        }

        /* Content Grid */
        .wba18-main-content {
            max-width: var(--wba18-container-max);
            margin: 0 auto;
            padding: 48px 24px 96px;
        }

        .wba18-filter-bar {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-bottom: 64px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .wba18-filter-btn {
            padding: 10px 24px;
            background: var(--wba18-card-bg);
            border: 1px solid var(--wba18-border);
            color: var(--wba18-text-secondary);
            border-radius: 100px;
            cursor: pointer;
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .wba18-filter-btn:hover, .wba18-filter-btn.active {
            border-color: var(--wba18-accent);
            color: var(--wba18-text-primary);
            background: rgba(62, 175, 124, 0.05);
        }

        .wba18-theme-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 32px;
        }

        .wba18-theme-card {
            background: var(--wba18-card-bg);
            border: 1px solid var(--wba18-border);
            border-radius: 16px;
            overflow: hidden;
            transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s ease;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .wba18-theme-card:hover {
            transform: translateY(-8px);
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: 0 20px 40px rgba(0,0,0,0.4);
        }

        .wba18-preview-window {
            height: 200px;
            background: #1a1a1a;
            padding: 20px;
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .wba18-code-line {
            height: 12px;
            border-radius: 6px;
            background: rgba(255,255,255,0.05);
            width: 80%;
        }

        .wba18-code-line.short { width: 40%; }
        .wba18-code-line.medium { width: 60%; }

        /* Specific Theme Colors */
        .wba18-theme-cyberpunk .wba18-preview-window { background: #0d0221; }
        .wba18-theme-cyberpunk .wba18-code-line { background: #ff00ff; opacity: 0.3; }
        
        .wba18-theme-nord .wba18-preview-window { background: #2e3440; }
        .wba18-theme-nord .wba18-code-line { background: #88c0d0; opacity: 0.4; }

        .wba18-theme-monokai .wba18-preview-window { background: #272822; }
        .wba18-theme-monokai .wba18-code-line { background: #a6e22e; opacity: 0.4; }

        .wba18-card-body {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            word-break: break-word;
        }

        .wba18-theme-name {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .wba18-theme-desc {
            font-size: 14px;
            color: var(--wba18-text-secondary);
            margin-bottom: 24px;
            line-height: 1.5;
        }

        .wba18-download-btn {
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            background: var(--wba18-text-primary);
            color: var(--wba18-bg);
            text-decoration: none;
            border-radius: 8px;
            font-weight: 600;
            font-size: 14px;
            transition: opacity 0.3s ease;
        }

        .wba18-download-btn:hover {
            opacity: 0.9;
        }

        /* Features Section */
        .wba18-features {
            background: #0a0a0a;
            padding: 96px 24px;
            border-top: 1px solid var(--wba18-border);
        }

        .wba18-section-label {
            display: block;
            text-align: center;
            color: var(--wba18-accent);
            text-transform: uppercase;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.2em;
            margin-bottom: 16px;
        }

        .wba18-section-title {
            text-align: center;
            font-size: clamp(2rem, 3vw, 2.5rem);
            margin-bottom: 64px;
        }

        .wba18-feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 48px;
            max-width: var(--wba18-container-max);
            margin: 0 auto;
        }

        .wba18-feature-item {
            min-width: 0;
            word-break: break-word;
        }

        .wba18-feature-icon {
            width: 48px;
            height: 48px;
            background: rgba(255,255,255,0.03);
            border: 1px solid var(--wba18-border);
            border-radius: 12px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .wba18-feature-h {
            font-size: 18px;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .wba18-feature-p {
            color: var(--wba18-text-secondary);
            font-size: 15px;
        }

        /* Dynamic Section Marker */
        .wba18-news-section {
            padding: 80px 24px;
            max-width: var(--wba18-container-max);
            margin: 0 auto;
            border-top: 1px solid var(--wba18-border);
        }

        /* Footer */
        .wba18-footer {
            padding: 80px 24px 40px;
            border-top: 1px solid var(--wba18-border);
            background: var(--wba18-bg);
        }

        .wba18-footer-grid {
            max-width: var(--wba18-container-max);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 64px;
        }

        .wba18-footer-brand p {
            color: var(--wba18-text-secondary);
            margin-top: 16px;
            max-width: 300px;
        }

        .wba18-footer-title {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            color: var(--wba18-text-primary);
        }

        .wba18-footer-links {
            list-style: none;
        }

        .wba18-footer-links li {
            margin-bottom: 12px;
        }

        .wba18-footer-links a {
            color: var(--wba18-text-secondary);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s ease;
        }

        .wba18-footer-links a:hover {
            color: var(--wba18-accent);
        }

        .wba18-footer-bottom {
            max-width: var(--wba18-container-max);
            margin: 0 auto;
            padding-top: 40px;
            border-top: 1px solid var(--wba18-border);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 24px;
            color: var(--wba18-text-secondary);
            font-size: 13px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .wba18-footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .wba18-nav-container {
                height: auto;
                padding: 16px 24px;
            }
            .wba18-menu {
                display: none; /* In a real project, add a mobile toggle */
            }
            .wba18-hero {
                padding-top: 120px;
            }
            .wba18-footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .wba18-theme-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Utility */
        .wba18-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(62, 175, 124, 0.1);
            color: var(--wba18-accent);
            border-radius: 4px;
            font-size: 11px;
            font-weight: 600;
            margin-bottom: 12px;
        }