:root {
    --accent: #3C81F7;
    --accent-dark: #2B6AD9;
    --bg: #1A1E2A;
    --bg-card: #222838;
    --bg-card-hover: #2A3145;
    --border: #323A52;
    --text: #E8ECF4;
    --text-secondary: #8892A8;
    --text-muted: #5A6480;
    --radius: 12px;
    --radius-lg: 20px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Background glow effects */
body::before,
body::after {
    content: '';
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    pointer-events: none;
    z-index: -1;
}

body::before {
    width: 600px;
    height: 600px;
    background: var(--accent);
    top: -200px;
    right: -100px;
}

body::after {
    width: 500px;
    height: 500px;
    background: #A78BFA;
    bottom: 20%;
    left: -150px;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Nav */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(26, 30, 42, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    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: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.nav-logo {
    width: 32px;
    height: 32px;
    border-radius: 6px;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: var(--text-secondary);
}

.nav-toggle svg {
    width: 24px;
    height: 24px;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Hero */
.hero {
    padding: 100px 0 100px;
    text-align: center;
}

.hero-logo {
    width: 200px;
    height: 200px;
    border-radius: 22px;
    margin-bottom: 16px;
}

.hero-title {
    font-size: clamp(64px, 8vw, 100px);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.04em;
    margin-bottom: 16px;
}

.hero-tagline {
    font-size: clamp(48px, 4vw, 64px);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.gradient {
    background: linear-gradient(135deg, var(--accent), #A78BFA);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.version-text {
    margin: 12px;
    font-size: 13px;
    color: var(--text-muted);
}

.wsl-note {
    margin-top: 8px;
    padding: 4px 12px;
    font-size: 11px;
    color: var(--text-muted);
}

/* Other platforms dropdown */
.other-platforms {
    position: relative;
    margin-top: 16px;
}

.other-platforms-toggle {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 13px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 0;
    transition: color 0.2s;
}

.other-platforms-toggle:hover {
    color: var(--text-secondary);
}

.other-platforms-toggle svg {
    transition: transform 0.2s;
}

.other-platforms.open .other-platforms-toggle svg {
    transform: rotate(180deg);
}

.other-platforms-dropdown {
    display: none;
    flex-direction: column;
    margin-top: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    max-width: 280px;
    margin-left: auto;
    margin-right: auto;
}

.other-platforms.open .other-platforms-dropdown {
    display: flex;
}

.platform-download-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.15s;
}

.platform-download-link:not(:last-child) {
    border-bottom: 1px solid var(--border);
}

.platform-download-link:hover {
    background: var(--bg-card-hover);
    color: var(--text);
}

.platform-download-link svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    opacity: 0.6;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(60, 129, 247, 0.3);
}

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

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--text-muted);
}

.btn svg {
    width: 18px;
    height: 18px;
}

/* Platforms */
.platforms {
    display: flex;
    gap: 32px;
    justify-content: center;
    margin-top: 48px;
    flex-wrap: wrap;
}

.platform-tag {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
}

.platform-tag svg {
    width: 20px;
    height: 20px;
}

/* Section */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-label {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 480px;
    margin: 0 auto;
}

/* Feature grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.feature-card {
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: all 0.25s;
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--text-muted);
    transform: translateY(-2px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(60, 129, 247, 0.1);
    border-radius: 12px;
    margin-bottom: 20px;
    color: var(--accent);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Hero screenshot */
.preview {
    margin-top: 80px;
}

.hero-screenshot {
    width: 100%;
    max-width: 900px;
}

/* Steps */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 40px;
}

.step-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--border);
    line-height: 1;
    margin-bottom: 16px;
}

.step h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.step p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Privacy */
.privacy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.privacy-item {
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.privacy-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.privacy-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* CTA */
.cta {
    text-align: center;
    padding: 80px 0 120px;
}

.cta h2 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.cta p {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 32px;
}

/* Footer */
footer {
    border-top: 1px solid var(--border);
    padding: 32px 0;
}

footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

footer p {
    font-size: 13px;
    color: var(--text-muted);
}

footer a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
}

footer a:hover {
    color: var(--text);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        padding: 8px 24px 16px;
        background: rgba(26, 30, 42, 0.95);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border);
    }

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

    .nav-links li a {
        display: block;
        padding: 10px 0;
    }

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

    section {
        padding: 60px 0;
    }

    footer .container {
        flex-direction: column;
        text-align: center;
    }
}