:root {
    --color-background: #0e1117;
    --color-surface: #111827;
    --color-surface-alt: #1f2937;
    --color-accent: #7c3aed;
    --color-accent-light: #a78bfa;
    --color-text: #101727;
    --color-text-muted: #4b5563;
    --color-border: rgba(148, 163, 184, 0.2);
    --font-family-base: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --shadow-soft: 0 24px 60px rgba(15, 23, 42, 0.14);
    --max-content-width: 1100px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-family-base);
    color: var(--color-text);
    background-color: #f8fafc;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
}

a:hover,
a:focus {
    color: var(--color-accent);
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 16px;
    padding: 12px 16px;
    background: #fff;
    border-radius: 8px;
    box-shadow: var(--shadow-soft);
    transition: top 0.2s;
    z-index: 1000;
}

.skip-link:focus {
    top: 16px;
}

.container {
    width: min(100% - 48px, var(--max-content-width));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 900;
    backdrop-filter: blur(12px);
    background: rgba(248, 250, 252, 0.85);
    border-bottom: 1px solid rgba(148, 163, 184, 0.2);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.125rem;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--color-accent), #4338ca);
    color: #fff;
}

.site-nav ul {
    display: flex;
    align-items: center;
    gap: 24px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.site-nav a {
    text-decoration: none;
    font-weight: 500;
}

.cta-link {
    padding: 10px 16px;
    border-radius: 999px;
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.3);
}

.nav-toggle {
    display: none;
}

.hero {
    padding: 120px 0 96px;
    background: radial-gradient(110% 110% at 15% 20%, rgba(124, 58, 237, 0.18), transparent),
        radial-gradient(120% 120% at 85% 10%, rgba(59, 130, 246, 0.13), transparent),
        #fafbff;
}

.hero-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 48px;
    align-items: center;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
}

h1,
 h2,
 h3 {
    color: #0f172a;
    line-height: 1.15;
    margin: 0 0 12px;
}

.lead {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 32px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 24px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
}

.btn.primary {
    background: linear-gradient(135deg, var(--color-accent), #6366f1);
    color: #fff;
    box-shadow: 0 16px 30px rgba(76, 29, 149, 0.3);
}

.btn.primary:hover,
.btn.primary:focus {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(76, 29, 149, 0.35);
}

.btn.secondary {
    background: #fff;
    border: 1px solid rgba(124, 58, 237, 0.3);
    color: var(--color-accent);
}

.app-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 24px;
    margin: 0;
}

.app-highlights dt {
    font-size: 1.75rem;
    font-weight: 700;
}

.app-highlights dd {
    margin: 6px 0 0;
    color: var(--color-text-muted);
}

.hero-card {
    display: flex;
    justify-content: center;
}

.card-screen {
    width: min(100%, 360px);
    padding: 32px;
    border-radius: 28px;
    background: #101727;
    color: #fff;
    box-shadow: var(--shadow-soft);
}

.card-headline {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.card-list {
    list-style: none;
    padding: 0;
    margin: 0 0 24px;
    display: grid;
    gap: 12px;
}

.card-list li {
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-list li::before {
    content: '';
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-accent-light);
}

.card-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.16);
    padding-top: 18px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.section {
    padding: 96px 0;
}

.section h2 {
    margin-bottom: 16px;
}

.section-lead {
    max-width: 640px;
    color: var(--color-text-muted);
    margin-bottom: 48px;
}

.split {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
    align-items: start;
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 16px;
}

.feature-list li {
    padding: 18px 24px;
    border-radius: 18px;
    background: #fff;
    border: 1px solid var(--color-border);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
}

.update-card {
    padding: 32px;
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(59, 130, 246, 0.1));
    border: 1px solid rgba(124, 58, 237, 0.2);
}

.card-kicker {
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-accent);
}

.inline-link {
    color: var(--color-accent);
    font-weight: 600;
    text-decoration: none;
}

.inline-link:hover,
.inline-link:focus {
    text-decoration: underline;
}

.accent {
    background: #f1f5ff;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 24px;
    border-radius: 20px;
    background: #fff;
    border: 1px solid rgba(124, 58, 237, 0.12);
    box-shadow: 0 28px 50px rgba(15, 23, 42, 0.06);
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
    align-items: start;
}

.audience-list {
    margin: 0;
    display: grid;
    gap: 20px;
}

.audience-list div {
    padding: 22px 24px;
    border-radius: 18px;
    background: #fff;
    border: 1px solid var(--color-border);
}

.audience-list dt {
    font-weight: 600;
    margin-bottom: 6px;
}

.audience-list dd {
    margin: 0;
    color: var(--color-text-muted);
}

.dark {
    background: #0f172a;
    color: #e2e8f0;
}

.safety-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
    align-items: center;
}

.safety-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 18px;
    font-size: 1.05rem;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.gallery-card {
    margin: 0;
    background: linear-gradient(160deg, rgba(124, 58, 237, 0.08), rgba(14, 165, 233, 0.08));
    border-radius: 20px;
    padding: 24px;
    display: grid;
    gap: 12px;
    border: 1px solid rgba(124, 58, 237, 0.2);
}

.gallery-placeholder {
    height: 160px;
    border-radius: 12px;
    background: repeating-linear-gradient(135deg, rgba(124, 58, 237, 0.12) 0, rgba(124, 58, 237, 0.12) 12px, rgba(59, 130, 246, 0.12) 12px, rgba(59, 130, 246, 0.12) 24px);
    display: grid;
    place-items: center;
    font-weight: 600;
    color: rgba(15, 23, 42, 0.7);
}

.highlight {
    background: #f8f5ff;
}

.developer-card {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    align-items: center;
}

.developer-meta ul {
    list-style: none;
    padding: 0;
    margin: 12px 0 0;
    display: grid;
    gap: 8px;
}

.developer-meta a {
    text-decoration: none;
    font-weight: 600;
    color: var(--color-accent);
}

.cta-final {
    text-align: center;
    padding-bottom: 120px;
}

.site-footer {
    background: #0b1120;
    color: #e2e8f0;
    padding: 32px 0;
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.footer-container a {
    color: #a5b4fc;
    text-decoration: none;
}

.footer-container a:hover,
.footer-container a:focus {
    text-decoration: underline;
}

@media (max-width: 860px) {
    .site-nav ul {
        position: absolute;
        top: 72px;
        right: 16px;
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
        background: #fff;
        border-radius: 18px;
        box-shadow: 0 24px 50px rgba(15, 23, 42, 0.18);
        border: 1px solid rgba(148, 163, 184, 0.16);
        transform: translateY(-16px);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.2s ease, transform 0.2s ease;
        min-width: 200px;
    }

    .site-nav ul.is-open {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    .nav-toggle {
        display: inline-flex;
        flex-direction: column;
        gap: 6px;
        padding: 10px;
        border: none;
        background: rgba(124, 58, 237, 0.1);
        border-radius: 12px;
        cursor: pointer;
    }

    .nav-toggle-bar {
        width: 22px;
        height: 2px;
        background: #312e81;
        border-radius: 999px;
    }

    .cta-link {
        display: none;
    }
}

@media (max-width: 600px) {
    .hero {
        padding: 88px 0 72px;
    }

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

    .card-screen {
        margin-inline: auto;
    }
}