:root {
            --bg-white: #ffffff;
            --text-main: #000000;
            --text-dim: #888888;
            --border-heavy: #000000;
            --border-light: #eeeeee;
        }

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

        body {
            font-family: 'Inter', 'PingFang SC', sans-serif;
            background-color: var(--bg-white);
            color: var(--text-main);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
            border: 8px solid var(--border-heavy);
            padding: 20px;
        }

        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 20px;
            border-bottom: 4px solid var(--border-heavy);
            margin-bottom: 40px;
        }

        .brand-name {
            font-weight: 900;
            text-transform: uppercase;
            font-size: 1.2rem;
            letter-spacing: 4px;
        }

        .version-tag {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.75rem;
            font-weight: 800;
            background: #000;
            color: #fff;
            padding: 4px 8px;
            margin-left: 15px;
        }

        .status-active {
            display: flex;
            align-items: center;
            gap: 8px;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.75rem;
            font-weight: 800;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            background: #000;
            border-radius: 50%;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.3; transform: scale(0.8); }
            100% { opacity: 1; transform: scale(1); }
        }

        .container {
            max-width: 1100px;
            margin: 0 auto;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            width: 100%;
        }

        .hero {
            margin-bottom: 60px;
            border-left: 8px solid #000;
            padding-left: 30px;
        }

        .title {
            font-size: 5rem;
            font-weight: 900;
            line-height: 1.0;
            letter-spacing: -3px;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .subtitle {
            font-size: 1.2rem;
            font-weight: 600;
            color: #444;
            max-width: 700px;
            margin-bottom: 40px;
            line-height: 1.6;
        }

        .cta-btn {
            background: #000;
            color: #fff;
            font-family: 'JetBrains Mono', monospace;
            font-size: 1.1rem;
            font-weight: 800;
            padding: 16px 36px;
            border: 2px solid #000;
            cursor: pointer;
            text-transform: uppercase;
            letter-spacing: 2px;
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 15px;
            box-shadow: 6px 6px 0px rgba(0,0,0,1);
        }

        .cta-btn:hover {
            transform: translate(2px, 2px);
            box-shadow: 4px 4px 0px rgba(0,0,0,1);
        }

        .cta-btn:active {
            transform: translate(6px, 6px);
            box-shadow: 0px 0px 0px rgba(0,0,0,1);
        }

        .cta-btn:disabled {
            background: #fff;
            color: #aaa;
            border-color: #ddd;
            box-shadow: none;
            cursor: not-allowed;
            transform: none;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin-bottom: 60px;
            border-top: 2px solid #000;
            padding-top: 40px;
        }

        .feature-card {
            border: 2px solid #000;
            padding: 25px;
            background: #fff;
            position: relative;
            transition: 0.2s;
        }

        .feature-card:hover {
            box-shadow: 8px 8px 0px rgba(0,0,0,0.1);
            transform: translateY(-2px);
        }

        .feature-number {
            position: absolute;
            top: -12px;
            right: 15px;
            background: #fff;
            padding: 0 10px;
            font-family: 'JetBrains Mono', monospace;
            font-weight: 800;
            font-size: 0.85rem;
            color: #000;
            border: 2px solid #000;
        }

        .feature-title {
            font-size: 1.1rem;
            font-weight: 900;
            margin-bottom: 12px;
        }

        .feature-desc {
            font-size: 0.85rem;
            color: #555;
            line-height: 1.6;
        }

        .tag-pill {
            display: inline-block;
            background: #eee;
            padding: 2px 6px;
            font-size: 0.65rem;
            font-weight: 900;
            font-family: 'JetBrains Mono', monospace;
            text-transform: uppercase;
            margin-top: 10px;
            border-radius: 2px;
        }

        .footer {
            border-top: 4px solid var(--border-heavy);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.75rem;
            color: var(--text-dim);
            text-transform: uppercase;
            font-weight: 800;
        }

        #loadingText {
            display: none;
            margin-top: 15px;
            font-family: 'JetBrains Mono', monospace;
            font-weight: 800;
            font-size: 0.8rem;
            color: #000;
        }

        @media (max-width: 768px) {
            .title { font-size: 3.5rem; }
            body { padding: 10px; border-width: 4px; }
            .hero { border-left-width: 4px; padding-left: 20px; }
        }

        /* Trial notice modal — minimalist black/white */
        .trial-modal-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.78);
            z-index: 10001;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        .trial-modal-overlay.active { display: flex; }
        .trial-modal {
            width: min(92vw, 520px);
            max-height: 90vh;
            overflow: auto;
            background: #fff;
            color: #000;
            border: 2px solid #000;
            border-radius: 8px;
            padding: 28px 28px 22px;
            font-family: 'Inter', 'PingFang SC', sans-serif;
        }
        .trial-modal h2 {
            font-size: 1.4rem;
            font-weight: 900;
            letter-spacing: 0;
            margin-bottom: 14px;
            border-bottom: 1px solid #000;
            padding-bottom: 10px;
            text-transform: uppercase;
        }
        .trial-modal p {
            font-size: 0.92rem;
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .trial-modal .trial-list {
            border: 1px solid #000;
            border-radius: 6px;
            padding: 14px 16px;
            margin: 6px 0 16px;
            font-size: 0.85rem;
            line-height: 1.7;
        }
        .trial-modal .trial-list b {
            font-weight: 800;
        }
        .trial-modal .ai-note {
            font-size: 0.78rem;
            color: #555;
            margin-bottom: 18px;
        }
        .trial-modal .trial-actions {
            display: flex;
            justify-content: flex-end;
        }
        .trial-modal button.confirm {
            background: #000;
            color: #fff;
            border: 1px solid #000;
            padding: 10px 22px;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.85rem;
            font-weight: 800;
            letter-spacing: 2px;
            cursor: pointer;
            border-radius: 4px;
        }
        .trial-modal button.confirm:hover { background: #fff; color: #000; }
        .github-star-cta {
            margin-top: 20px;
        }

        .github-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #000;
            text-decoration: none;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.8rem;
            font-weight: 800;
            letter-spacing: 1px;
            padding: 8px 14px;
            border: 1.5px solid #000;
            border-radius: 4px;
            transition: all 0.15s ease;
        }

        .github-link:hover {
            background: #000;
            color: #fff;
        }

        .github-link:hover .github-star {
            transform: scale(1.2);
        }

        .github-icon {
            width: 16px;
            height: 16px;
        }

        .github-star {
            transition: transform 0.15s ease;
        }

        @media (max-width: 480px) {
            .trial-modal { padding: 20px; }
            .trial-modal h2 { font-size: 1.15rem; }
        }