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

:root {
    --primary: #ffffff;
    --primary-foreground: #000000;
    --secondary: #1a1a1a;
    --secondary-foreground: #ffffff;
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --bg-default: #0a0a0a;
    --bg-secondary: #111111;
    --border: #262626;
    --spacing-unit: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-default);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 3);
}

.navbar {
    background-color: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: calc(var(--spacing-unit) * 3) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 17px;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.3px;
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1.5);
}

.logo:hover {
    color: var(--text-secondary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: contain;
    display: block;
}

.nav-links {
    display: flex;
    gap: calc(var(--spacing-unit) * 4);
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 400;
    font-size: 15px;
    transition: color 0.2s ease;
}

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

.hero {
    padding: calc(var(--spacing-unit) * 20) 0 calc(var(--spacing-unit) * 16);
    background: var(--bg-default);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 100% 100% at 50% 0%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse 100% 100% at 0% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse 100% 100% at 100% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

h1 {
    font-size: 56px;
    font-weight: 600;
    line-height: 1.15;
    color: var(--text-primary);
    margin-bottom: calc(var(--spacing-unit) * 5);
    letter-spacing: -1.2px;
}

.subtitle {
    font-size: 19px;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: calc(var(--spacing-unit) * 8);
    font-weight: 400;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.download-buttons {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1.5);
    padding: calc(var(--spacing-unit) * 2.5) calc(var(--spacing-unit) * 6);
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.25s ease;
    cursor: pointer;
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    background-color: #e5e5e5;
    transform: translateY(-1px);
}

.features {
    padding: calc(var(--spacing-unit) * 18) 0;
    background-color: var(--bg-default);
}

.features-header {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 14);
}

.features h2 {
    font-size: 40px;
    font-weight: 600;
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 4);
    color: var(--text-primary);
    letter-spacing: -0.8px;
}

.features-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: calc(var(--spacing-unit) * 8);
    max-width: 1000px;
    margin: 0 auto;
}

.feature-card {
    padding: calc(var(--spacing-unit) * 2) 0;
    transition: transform 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 28px;
    margin-bottom: calc(var(--spacing-unit) * 3);
    display: block;
    opacity: 0.9;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: calc(var(--spacing-unit) * 2);
    color: var(--text-primary);
    letter-spacing: -0.2px;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.75;
    font-size: 15px;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.feature-group {
    margin-bottom: calc(var(--spacing-unit) * 12);
}

.feature-card-large {
    max-width: 900px;
    margin: 0 auto;
    padding: calc(var(--spacing-unit) * 6) 0;
}

.feature-icon-large {
    font-size: 48px;
    margin-bottom: calc(var(--spacing-unit) * 4);
    display: block;
    opacity: 0.9;
}

.feature-card-large h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: calc(var(--spacing-unit) * 3);
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.feature-card-large p {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.feature-list,
.feature-list-small {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list li,
.feature-list-small li {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 15px;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    padding-left: calc(var(--spacing-unit) * 3);
    position: relative;
}

.feature-list li::before,
.feature-list-small li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--text-primary);
    font-weight: 600;
}

.feature-list li {
    font-size: 16px;
}

.feature-list-small li {
    font-size: 14px;
}

.pro-features {
    padding: calc(var(--spacing-unit) * 20) 0;
    background: linear-gradient(135deg, #111111 0%, #0f0f0f 100%);
    position: relative;
}

.pro-features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 100% 100% at 50% 0%, rgba(99, 102, 241, 0.12) 0%, transparent 50%);
    pointer-events: none;
}

.pro-badge {
    display: inline-block;
    padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 3);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    color: #6366f1;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0 auto calc(var(--spacing-unit) * 4);
    display: block;
    width: fit-content;
}

.pro-features h2 {
    font-size: 40px;
    font-weight: 600;
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 4);
    color: var(--text-primary);
    letter-spacing: -0.8px;
    position: relative;
    z-index: 1;
}

.pro-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto calc(var(--spacing-unit) * 12);
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

.pro-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--spacing-unit) * 6);
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.pro-feature-card {
    background: var(--bg-default);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: calc(var(--spacing-unit) * 5);
    transition: all 0.25s ease;
}

.pro-feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.pro-icon {
    font-size: 32px;
    margin-bottom: calc(var(--spacing-unit) * 3);
    display: block;
    opacity: 0.9;
}

.pro-feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: calc(var(--spacing-unit) * 2);
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.pro-feature-card p {
    color: var(--text-secondary);
    line-height: 1.75;
    font-size: 15px;
}

.comparison {
    padding: calc(var(--spacing-unit) * 20) 0;
    background-color: var(--bg-default);
}

.comparison h2 {
    font-size: 40px;
    font-weight: 600;
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 4);
    color: var(--text-primary);
    letter-spacing: -0.8px;
}

.comparison-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 12);
    line-height: 1.7;
}

.comparison-table {
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    background: var(--bg-default);
}

.comparison-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.comparison-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    border-bottom: 1px solid var(--border);
    transition: background 0.2s ease;
}

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

.comparison-row:hover {
    background: var(--bg-secondary);
}

.comparison-cell {
    padding: calc(var(--spacing-unit) * 4);
    font-size: 15px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
}

.comparison-cell.feature-name {
    font-weight: 500;
    color: var(--text-primary);
}

.comparison-header .comparison-cell {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-primary);
}

.pro-cell {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
    color: #818cf8;
    font-weight: 600;
    justify-content: center;
}

.comparison-header .pro-cell {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
}

.comparison-cell:not(.feature-name) {
    justify-content: center;
    text-align: center;
}

.screenshots {
    padding: calc(var(--spacing-unit) * 18) 0;
    background-color: var(--bg-default);
}

.screenshots h2 {
    font-size: 40px;
    font-weight: 600;
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 12);
    color: var(--text-primary);
    letter-spacing: -0.8px;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
    max-width: 1100px;
    margin: 0 auto;
}

.screenshot-placeholder {
    aspect-ratio: 9/16;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
}

.screenshot-placeholder:hover {
    border-color: var(--text-muted);
    transform: translateY(-4px);
}

.placeholder-content {
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
}

.cta {
    padding: calc(var(--spacing-unit) * 18) 0;
    background-color: var(--bg-secondary);
    text-align: center;
    border-top: 1px solid var(--border);
}

.cta h2 {
    font-size: 40px;
    font-weight: 600;
    margin-bottom: calc(var(--spacing-unit) * 4);
    color: var(--text-primary);
    letter-spacing: -0.8px;
}

.cta p {
    font-size: 17px;
    margin-bottom: calc(var(--spacing-unit) * 8);
    color: var(--text-secondary);
}

.cta .btn-primary {
    background-color: var(--primary);
    color: var(--primary-foreground);
}

.cta .btn-primary:hover {
    background-color: #e5e5e5;
}

footer {
    padding: calc(var(--spacing-unit) * 8) 0;
    background-color: var(--bg-default);
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 14px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: calc(var(--spacing-unit) * 2);
}

.footer-links {
    display: flex;
    gap: calc(var(--spacing-unit) * 4);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.privacy-content {
    padding: calc(var(--spacing-unit) * 12) 0 calc(var(--spacing-unit) * 16);
    max-width: 800px;
    margin: 0 auto;
}

.privacy-content h1 {
    font-size: 42px;
    font-weight: 600;
    margin-bottom: calc(var(--spacing-unit) * 3);
    color: var(--text-primary);
    letter-spacing: -0.8px;
}

.last-updated {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: calc(var(--spacing-unit) * 8);
    font-weight: 400;
}

.privacy-section {
    margin-bottom: calc(var(--spacing-unit) * 7);
}

.privacy-section h2 {
    font-size: 22px;
    font-weight: 500;
    margin-bottom: calc(var(--spacing-unit) * 3);
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.privacy-section h3 {
    font-size: 16px;
    font-weight: 600;
    margin-top: calc(var(--spacing-unit) * 3);
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    color: var(--text-primary);
}

.privacy-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: calc(var(--spacing-unit) * 3);
    font-size: 16px;
}

.privacy-section ul {
    margin-left: calc(var(--spacing-unit) * 4);
    margin-bottom: calc(var(--spacing-unit) * 2.5);
}

.privacy-section li {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    font-size: 15px;
}

@media (max-width: 768px) {
    h1 {
        font-size: 40px;
        letter-spacing: -0.8px;
    }

    .subtitle {
        font-size: 17px;
    }

    .features h2,
    .screenshots h2,
    .cta h2,
    .pro-features h2,
    .comparison h2 {
        font-size: 32px;
        letter-spacing: -0.6px;
    }

    .features-subtitle,
    .pro-subtitle,
    .comparison-subtitle {
        font-size: 16px;
        padding: 0 calc(var(--spacing-unit) * 2);
    }

    .screenshots-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    }

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

    .privacy-content h1 {
        font-size: 36px;
        letter-spacing: -0.6px;
    }

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

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

    .feature-card-large h3 {
        font-size: 24px;
    }

    .feature-card-large p {
        font-size: 16px;
    }

    .comparison-table {
        border-radius: 12px;
        overflow-x: auto;
    }

    .comparison-header,
    .comparison-row {
        grid-template-columns: 2fr 1fr 1fr;
        min-width: 500px;
    }

    .comparison-cell {
        padding: calc(var(--spacing-unit) * 3);
        font-size: 14px;
    }

    .comparison-header .comparison-cell {
        font-size: 15px;
    }

    .hero {
        padding: calc(var(--spacing-unit) * 16) 0 calc(var(--spacing-unit) * 12);
    }

    .features,
    .screenshots,
    .cta,
    .pro-features,
    .comparison {
        padding: calc(var(--spacing-unit) * 14) 0;
    }
}