:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a25;
    --bg-card-hover: #22222f;
    --text-primary: #e8e8f0;
    --text-secondary: #9898a8;
    --text-muted: #68687a;
    --accent: #6366f1;
    --accent-light: #818cf8;
    --accent-dark: #4f46e5;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --border: #2a2a38;
    --border-light: #3a3a4a;
    --success: #22c55e;
    --warning: #f59e0b;
    --info: #3b82f6;
    --gradient-hero: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a78bfa 100%);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.2);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-primary);
}

.brand-symbol {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-name {
    font-size: 1.1rem;
    font-weight: 600;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.nav-cta {
    background: var(--accent);
    color: white !important;
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    transition: background 0.2s, transform 0.2s !important;
}

.nav-cta:hover {
    background: var(--accent-dark);
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: 0.3s;
}

/* Hero */
.hero {
    position: relative;
    padding: 160px 0 100px;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--accent-glow);
    border: 1px solid var(--border-light);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--accent-light);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero-symbol {
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 36px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-light);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--accent-light);
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Performance */
.perf-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.perf-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 28px;
}

.perf-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.perf-table {
    width: 100%;
    border-collapse: collapse;
}

.perf-table th,
.perf-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

.perf-table th {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.85rem;
}

.perf-table .highlight {
    color: var(--success);
    font-weight: 600;
}

.perf-note {
    margin-top: 16px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.benchmark-bars {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.benchmark-item {
    display: grid;
    grid-template-columns: 120px 1fr 100px;
    align-items: center;
    gap: 12px;
}

.benchmark-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.benchmark-bar {
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.benchmark-fill {
    height: 100%;
    background: var(--gradient-hero);
    border-radius: 4px;
    transition: width 1s ease-out;
}

.benchmark-value {
    font-size: 0.85rem;
    color: var(--accent-light);
    font-weight: 600;
    text-align: right;
}

/* Roadmap */
.roadmap {
    display: grid;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.roadmap-phase {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.phase-header {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.phase-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.phase-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.phase-completed {
    border-left: 3px solid var(--success);
}

.phase-completed .phase-badge {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success);
}

.phase-current {
    border-left: 3px solid var(--accent);
}

.phase-current .phase-badge {
    background: var(--accent-glow);
    color: var(--accent-light);
}

.phase-planned {
    border-left: 3px solid var(--border-light);
}

.phase-planned .phase-badge {
    background: rgba(104, 104, 122, 0.15);
    color: var(--text-muted);
}

.phase-items {
    padding: 0 24px 20px 60px;
    list-style: none;
}

.phase-items li {
    position: relative;
    padding: 6px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.phase-items li::before {
    content: '';
    position: absolute;
    left: -16px;
    top: 14px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--border-light);
}

.phase-completed + .phase-items li::before,
.phase-completed .phase-items li::before {
    background: var(--success);
}

.phase-current .phase-items li::before {
    background: var(--accent);
}

/* Releases */
.releases {
    display: grid;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.release {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.release-header {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    border-bottom: 1px solid var(--border);
}

.release-version {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-light);
}

.release-date {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.release-tag {
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.release-current {
    background: var(--accent-glow);
    color: var(--accent-light);
}

.release-body {
    padding: 24px;
}

.release-section {
    margin-bottom: 20px;
}

.release-section:last-child {
    margin-bottom: 0;
}

.release-section h4 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.release-section ul {
    list-style: none;
    padding-left: 0;
}

.release-section li {
    position: relative;
    padding: 4px 0 4px 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.release-section li::before {
    content: '+';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 600;
}

/* Getting Started */
.getting-started-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
    margin-bottom: 60px;
}

.gs-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
}

.gs-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.code-block {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--accent-light);
    overflow-x: auto;
}

.cta-section {
    text-align: center;
    padding: 60px 40px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.cta-section h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.cta-section p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-brand .brand-symbol {
    font-size: 1.5rem;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.footer-col h4 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.footer-col a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 4px 0;
    transition: color 0.2s;
}

.footer-col a:hover {
    color: var(--accent-light);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
    }

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

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

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

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

    .benchmark-item {
        grid-template-columns: 100px 1fr 80px;
    }

    .getting-started-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .section {
        padding: 60px 0;
    }

    .section-header h2 {
        font-size: 1.75rem;
    }
}