:root {
            --bg-dark: #0a0a0a;
            --bg-surface: #111111;
            --bg-card: #161616;
            --text-primary: #f5f5f5;
            --text-secondary: #a0a0a0;
            --text-muted: #666;
            --accent-cyan: #00ffd5;
            --accent-green: #22c55e;
            --accent-red: #ef4444;
            --accent-coral: #e8594c;
            --accent-blue: #3b82f6;
            --border: #2a2a2a;
            --border-accent: #00ffd5;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: 'Space Grotesk', sans-serif;
        }

        code, .mono {
            font-family: 'JetBrains Mono', monospace;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAV ========== */
        nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 10, 10, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
        }

        .nav-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: 'Space Grotesk', sans-serif;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-primary);
        }

        .nav-logo-mark {
            width: 32px;
            height: 32px;
            background: var(--accent-cyan);
            border-radius: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'Space Grotesk', sans-serif;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--bg-dark);
        }

        .nav-logo-text {
            font-family: 'JetBrains Mono', monospace;
            font-weight: 600;
            letter-spacing: -0.5px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-links a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: color 0.2s;
            font-weight: 500;
        }

        .nav-links a:hover {
            color: var(--text-primary);
        }

        .nav-cta {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan) !important;
            padding: 8px 18px;
            border-radius: 0;
            font-size: 0.85rem !important;
            font-weight: 600 !important;
            transition: background 0.2s, color 0.2s;
            font-family: 'JetBrains Mono', monospace;
        }

        .nav-cta:hover {
            background: var(--accent-cyan);
            color: var(--bg-dark) !important;
        }

        .nav-mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px;
        }

        /* ========== HERO ========== */
        /* Option C: title spans the full width up top, then a single
         * row below with description + stats on the left and CTAs on
         * the right. Title gets the hero treatment, description + CTAs
         * stay above the fold side-by-side. */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: 64px;
            overflow: hidden;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .hero-top {
            margin-bottom: clamp(20px, 3vh, 36px);
        }

        .hero-bottom {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 48px;
            align-items: end;
        }

        .hero-bottom-right {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 255, 213, 0.06);
            border: 1px solid rgba(0, 255, 213, 0.2);
            border-radius: 0;
            padding: 6px 16px;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.78rem;
            color: var(--accent-cyan);
            margin-bottom: 32px;
        }

        .hero-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--accent-cyan);
            border-radius: 0;
        }

        /* Round 6 kicker — small code-comment line above the giant
         * headline. Sets the read order so a visitor sees the
         * compare-runtimes pitch before the war-room visual identity.
         * Per Designer seat 2026-05-16: subordinate to subtitle in
         * weight + color, monospace to match the terminal aesthetic,
         * tight margin to the headline so it reads as a kicker not
         * an orphan. */
        .hero-kicker {
            font-family: 'JetBrains Mono', monospace;
            font-size: clamp(0.72rem, 1vw, 0.88rem);
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 0.5px;
            margin: 12px 0 10px 0;
            opacity: 0.9;
        }

        .hero-title {
            font-family: 'Space Grotesk', sans-serif;
            /* Bigger than the original 5.5rem cap to take advantage
             * of the full-width row, but dialed back from the 10rem
             * version that ate the whole viewport on wide screens. */
            font-size: clamp(3rem, 8vw, 7rem);
            font-weight: 700;
            line-height: 0.95;
            letter-spacing: -2px;
            text-transform: uppercase;
            margin-bottom: 0;
        }

        .hero-title .line {
            display: block;
        }

        .hero-title .bracket {
            color: var(--text-muted);
        }

        .hero-title .highlight {
            color: var(--accent-cyan);
        }

        .hero-title .underscore {
            color: var(--text-muted);
        }

        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.65;
            margin-bottom: 24px;
            margin-top: 8px;
        }

        .hero-stats {
            display: flex;
            gap: 36px;
            margin-bottom: 0;
            flex-wrap: wrap;
        }

        .hero-stat {
            text-align: left;
        }

        .hero-stat-value {
            font-family: 'Space Grotesk', sans-serif;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1;
        }

        .hero-stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .hero-ctas {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            flex-direction: column;
            align-items: stretch;
        }

        .hero-bottom-right .btn-primary,
        .hero-bottom-right .btn-outline {
            justify-content: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent-cyan);
            color: var(--bg-dark);
            padding: 14px 28px;
            border-radius: 0;
            font-family: 'Space Grotesk', sans-serif;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 255, 213, 0.25);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--text-primary);
            padding: 14px 28px;
            border-radius: 0;
            font-family: 'Space Grotesk', sans-serif;
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid var(--border);
            cursor: pointer;
            transition: border-color 0.2s, transform 0.2s;
        }

        .btn-outline:hover {
            border-color: var(--text-secondary);
            transform: translateY(-2px);
        }

        .hero-visual {
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            z-index: 1;
            pointer-events: none;
            mask-image: linear-gradient(to left, rgba(0,0,0,1) 0%, rgba(0,0,0,0.8) 60%, rgba(0,0,0,0) 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,1) 0%, rgba(0,0,0,0.8) 60%, rgba(0,0,0,0) 100%);
        }

        #aurora-canvas {
            position: absolute;
            top: 0;
            right: 0;
            width: 100%;
            height: 100%;
            opacity: 1;
        }

        /* ========== SECTION COMMON ========== */
        section {
            padding: 120px 0;
        }

        .section-label {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.82rem;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 16px;
        }

        .section-title {
            font-family: 'Space Grotesk', sans-serif;
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 700;
            letter-spacing: -1px;
            margin-bottom: 20px;
            line-height: 1.1;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
        }

        /* ========== PROBLEM ========== */
        .problem {
            background: var(--bg-surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .problem-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 60px;
        }

        .problem-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0;
            padding: 32px;
            transition: border-color 0.3s, transform 0.3s;
        }

        .problem-card:hover {
            border-color: var(--accent-coral);
            transform: translateY(-4px);
        }

        .problem-card-icon {
            width: 44px;
            height: 44px;
            border-radius: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 20px;
        }

        .problem-card:nth-child(1) .problem-card-icon {
            background: rgba(239, 68, 68, 0.1);
            border: 1px solid rgba(239, 68, 68, 0.2);
        }

        .problem-card:nth-child(2) .problem-card-icon {
            background: rgba(232, 89, 76, 0.1);
            border: 1px solid rgba(232, 89, 76, 0.2);
        }

        .problem-card:nth-child(3) .problem-card-icon {
            background: rgba(59, 130, 246, 0.1);
            border: 1px solid rgba(59, 130, 246, 0.2);
        }

        .problem-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .problem-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* ========== FEATURES ========== */
        .features {
            background: var(--bg-dark);
        }

        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            margin-top: 80px;
            padding-bottom: 80px;
            border-bottom: 1px solid var(--border);
        }

        .feature-block:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .feature-block:nth-child(even) {
            direction: rtl;
        }

        .feature-block:nth-child(even) > * {
            direction: ltr;
        }

        .feature-info h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .feature-info > p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .feature-bullets {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .feature-bullets li {
            position: relative;
            padding-left: 20px;
            font-size: 0.92rem;
            line-height: 1.6;
            color: var(--text-secondary);
        }

        .feature-bullets li::before {
            content: '>';
            position: absolute;
            left: 0;
            top: 0;
            color: var(--accent-cyan);
            font-family: 'JetBrains Mono', monospace;
            font-weight: 600;
        }

        @keyframes cursor-blink {
            0%, 49% { opacity: 1; }
            50%, 100% { opacity: 0; }
        }
        .cursor-blink {
            animation: cursor-blink 1s steps(2) infinite;
        }

        .feature-mockup {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0;
            padding: 24px;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.85rem;
            overflow: hidden;
        }

        .feature-mockup-header {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 20px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }

        .feature-mockup-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
        }

        .feature-mockup-dot.red { background: var(--accent-red); }
        .feature-mockup-dot.yellow { background: #eab308; }
        .feature-mockup-dot.green { background: var(--accent-green); }

        /* Context Visualizer Mockup */
        .context-bar-wrap {
            margin-bottom: 16px;
        }

        .context-bar-label {
            display: flex;
            justify-content: space-between;
            font-size: 0.78rem;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }

        .context-bar {
            height: 28px;
            background: var(--bg-surface);
            border-radius: 0;
            overflow: hidden;
            display: flex;
        }

        .context-bar-segment {
            height: 100%;
            transition: width 0.6s ease;
        }

        .context-bar-legend {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 14px;
        }

        .context-bar-legend span {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.72rem;
            color: var(--text-secondary);
        }

        .context-bar-legend span::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 0;
        }

        .legend-system::before { background: var(--accent-coral); }
        .legend-skills::before { background: var(--accent-blue); }
        .legend-mcp::before { background: #8b5cf6; }
        .legend-claude::before { background: #eab308; }
        .legend-convo::before { background: var(--accent-cyan); }
        .legend-free::before { background: var(--border); }

        /* Skills Mockup */
        .skill-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }

        .skill-row:last-child {
            border-bottom: none;
        }

        .skill-name {
            color: var(--text-primary);
            font-size: 0.82rem;
        }

        .skill-meta {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .skill-tokens {
            color: var(--text-muted);
            font-size: 0.75rem;
        }

        .skill-toggle {
            width: 36px;
            height: 20px;
            border-radius: 0;
            position: relative;
        }

        .skill-toggle.on {
            background: var(--accent-cyan);
        }

        .skill-toggle.off {
            background: var(--border);
        }

        .skill-toggle::after {
            content: '';
            width: 16px;
            height: 16px;
            background: white;
            border-radius: 50%;
            position: absolute;
            top: 2px;
            transition: left 0.2s;
        }

        .skill-toggle.on::after {
            left: 18px;
        }

        .skill-toggle.off::after {
            left: 2px;
        }

        /* Usage Mockup */
        .usage-summary {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-bottom: 16px;
        }

        .usage-card {
            background: var(--bg-surface);
            border-radius: 0;
            padding: 14px;
        }

        .usage-card-label {
            font-size: 0.7rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 6px;
        }

        .usage-card-value {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-primary);
        }

        .usage-card-sub {
            font-size: 0.7rem;
            color: var(--accent-cyan);
            margin-top: 4px;
        }

        .usage-bar-chart {
            display: flex;
            align-items: flex-end;
            gap: 4px;
            height: 60px;
            margin-top: 12px;
        }

        .usage-bar-chart div {
            flex: 1;
            background: var(--accent-cyan);
            border-radius: 0;
            opacity: 0.5;
            transition: opacity 0.2s;
        }

        .usage-bar-chart div:last-child {
            opacity: 1;
        }

        /* MCP Mockup */
        .mcp-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }

        .mcp-row:last-child {
            border-bottom: none;
        }

        .mcp-row-left {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .mcp-status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
        }

        .mcp-status-dot.online { background: var(--accent-green); }
        .mcp-status-dot.offline { background: var(--accent-red); }

        .mcp-server-name {
            color: var(--text-primary);
            font-size: 0.82rem;
        }

        .mcp-row-right {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* ========== MCP SERVER SECTION ========== */
        .mcp-section {
            background: var(--bg-surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .mcp-section .section-subtitle {
            margin-bottom: 48px;
        }

        .terminal-block {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0;
            overflow: hidden;
            max-width: 700px;
            margin: 0 auto;
        }

        .terminal-header {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 14px 20px;
            border-bottom: 1px solid var(--border);
            background: var(--bg-surface);
        }

        .terminal-body {
            padding: 24px;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.82rem;
            line-height: 1.8;
            color: var(--text-secondary);
            overflow-x: auto;
        }

        .terminal-body .prompt {
            color: var(--accent-cyan);
        }

        .terminal-body .comment {
            color: var(--text-muted);
        }

        .terminal-body .string {
            color: var(--accent-green);
        }

        .terminal-body .check {
            color: var(--accent-green);
        }

        /* ========== ARCHITECTURE ========== */
        .architecture {
            background: var(--bg-dark);
        }

        .arch-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 24px;
            align-items: center;
            margin-top: 60px;
        }

        .arch-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0;
            padding: 36px;
            transition: border-color 0.3s, transform 0.3s;
        }

        .arch-card:hover {
            border-color: var(--accent-cyan);
            transform: translateY(-4px);
        }

        .arch-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .arch-card .arch-subtitle {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.8rem;
            color: var(--accent-cyan);
            margin-bottom: 20px;
        }

        .arch-card ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .arch-card ul li {
            font-size: 0.92rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .arch-card ul li::before {
            content: '>';
            font-family: 'JetBrains Mono', monospace;
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .arch-sync {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
        }

        .arch-sync-arrow {
            font-size: 2rem;
            color: var(--accent-cyan);
            line-height: 1;
        }

        .arch-sync-label {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.72rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* ========== I18N ========== */
        .i18n {
            background: var(--bg-surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 80px 0;
            text-align: center;
        }

        .i18n-badges {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-top: 32px;
            flex-wrap: wrap;
        }

        .i18n-badge {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0;
            padding: 14px 28px;
            font-family: 'Space Grotesk', sans-serif;
            font-weight: 600;
            font-size: 1rem;
            transition: border-color 0.3s;
        }

        .i18n-badge:hover {
            border-color: var(--accent-cyan);
        }

        .i18n-badge span {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-left: 8px;
        }

        /* ========== DOWNLOAD ========== */
        .download {
            background: var(--bg-dark);
            text-align: center;
        }

        .download .section-subtitle {
            margin: 0 auto 48px auto;
        }

        .download-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 16px;
            max-width: 900px;
            margin: 0 auto 40px auto;
        }

        .download-btn {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0;
            padding: 20px;
            text-align: center;
            transition: border-color 0.3s, transform 0.3s;
            cursor: pointer;
            display: block;
        }

        .download-btn:hover {
            border-color: var(--accent-cyan);
            transform: translateY(-4px);
        }

        .download-btn-icon {
            font-size: 1.8rem;
            margin-bottom: 10px;
        }

        .download-btn-label {
            font-family: 'Space Grotesk', sans-serif;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .download-btn-sub {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .download-alt {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        .download-alt code {
            background: var(--bg-card);
            border: 1px solid var(--border);
            padding: 4px 12px;
            border-radius: 0;
            font-size: 0.85rem;
            color: var(--accent-cyan);
        }

        /* ========== ECOSYSTEM ========== */
        .ecosystem {
            background: var(--bg-surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .ecosystem-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 60px;
        }

        .ecosystem-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0;
            padding: 32px;
            transition: border-color 0.3s, transform 0.3s;
            display: block;
        }

        .ecosystem-card:hover {
            border-color: var(--accent-cyan);
            transform: translateY(-4px);
        }

        .ecosystem-card-name {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.82rem;
            color: var(--accent-cyan);
            margin-bottom: 10px;
        }

        .ecosystem-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .ecosystem-card p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.6;
        }

        .ecosystem-card .arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-cyan);
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.82rem;
            margin-top: 16px;
        }

        /* ========== FOOTER ========== */
        footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border);
            padding: 80px 0 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 60px;
        }

        .footer-brand h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            max-width: 300px;
        }

        .footer-col h5 {
            font-size: 0.82rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color 0.2s;
        }

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 32px;
            border-top: 1px solid var(--border);
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .footer-bottom .ecosystem-tag {
            font-family: 'JetBrains Mono', monospace;
            color: var(--text-muted);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 900px) {
            .hero-bottom {
                grid-template-columns: 1fr;
                gap: 32px;
                align-items: stretch;
            }

            .hero-visual {
                display: none;
            }

            .problem-grid,
            .ecosystem-grid {
                grid-template-columns: 1fr;
            }

            .feature-block {
                grid-template-columns: 1fr;
            }

            .feature-block:nth-child(even) {
                direction: ltr;
            }

            .arch-grid {
                grid-template-columns: 1fr;
            }

            .arch-sync {
                flex-direction: row;
            }

            .arch-sync-arrow {
                transform: rotate(90deg);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(10, 10, 10, 0.97);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid var(--border);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-mobile-toggle {
                display: block;
            }

            .hero-title {
                font-size: clamp(2.2rem, 8vw, 3.5rem);
            }

            .hero-stats {
                gap: 24px;
            }

            .hero-ctas {
                flex-direction: column;
            }

            .hero-ctas .btn-primary,
            .hero-ctas .btn-outline {
                text-align: center;
                justify-content: center;
            }

            section {
                padding: 80px 0;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }

            .download-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ========== ANIMATIONS ========== */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ========== LANGUAGE DROPDOWN ========== */
        .lang-dropdown {
            position: relative;
            display: inline-block;
            font-family: 'JetBrains Mono', monospace;
        }
        .lang-dropdown-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            color: var(--text-secondary);
            border: 1px solid var(--border);
            padding: 6px 10px;
            font-family: inherit;
            font-size: 11px;
            letter-spacing: 0.06em;
            cursor: pointer;
            border-radius: 4px;
            transition: border-color 0.18s ease, color 0.18s ease, background 0.18s ease;
        }
        .lang-dropdown-btn:hover,
        .lang-dropdown[data-open="true"] .lang-dropdown-btn {
            color: var(--text-primary);
            border-color: var(--accent-cyan);
            background: rgba(0, 255, 213, 0.04);
        }
        .lang-dropdown-btn:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }
        .lang-dropdown-icon {
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .lang-dropdown-current { font-weight: 600; }
        .lang-dropdown-chevron {
            display: inline-block;
            font-size: 9px;
            transition: transform 0.18s ease;
            opacity: 0.7;
        }
        .lang-dropdown[data-open="true"] .lang-dropdown-chevron {
            transform: rotate(180deg);
        }
        .lang-dropdown-menu {
            position: absolute;
            top: calc(100% + 6px);
            right: 0;
            background: var(--bg-elev);
            border: 1px solid var(--border);
            list-style: none;
            margin: 0;
            padding: 4px 0;
            min-width: 160px;
            border-radius: 4px;
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.5);
            opacity: 0;
            visibility: hidden;
            transform: translateY(-4px);
            transition: opacity 0.15s ease, visibility 0.15s ease, transform 0.15s ease;
            z-index: 1100;
        }
        .lang-dropdown[data-open="true"] .lang-dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .lang-dropdown-menu li { margin: 0; padding: 0; }
        .lang-dropdown-menu a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 9px 14px;
            color: var(--text-secondary);
            font-family: inherit;
            font-size: 12px;
            text-decoration: none;
            transition: background 0.12s ease, color 0.12s ease;
        }
        .lang-dropdown-menu a:hover {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
        }
        .lang-dropdown-menu a.active {
            color: var(--accent-cyan);
            font-weight: 700;
        }
        .lang-dropdown-menu a .lang-code {
            font-size: 10px;
            color: var(--text-muted);
            letter-spacing: 0.08em;
        }
        .lang-dropdown-menu a.active .lang-code { color: var(--accent-cyan); }

        /* Footer variant: open upward */
        .lang-dropdown.lang-dropdown--up .lang-dropdown-menu {
            top: auto;
            bottom: calc(100% + 6px);
            transform: translateY(4px);
        }
        .lang-dropdown.lang-dropdown--up[data-open="true"] .lang-dropdown-menu {
            transform: translateY(0);
        }

        @media (max-width: 768px) {
            .lang-dropdown-menu {
                right: auto;
                left: 0;
            }
        }