:root { color-scheme: dark; --bg: #07131d; --surface: #102430; --text: #eef8f8; --muted: #a9c1c5; --accent: #a5e6e2; }
* { box-sizing: border-box; }
body { margin: 0; background: radial-gradient(circle at 50% 0%, #1a4350, var(--bg) 54%); color: var(--text); font: 16px/1.6 system-ui, -apple-system, sans-serif; }
main { max-width: 760px; margin: auto; padding: 72px 24px; }
h1, h2 { font-weight: 500; line-height: 1.15; }
a { color: var(--accent); }
.card { background: rgba(16,36,48,.78); border: 1px solid rgba(165,230,226,.18); border-radius: 22px; padding: 24px; margin-top: 22px; }
a { text-underline-offset: .2em; overflow-wrap: anywhere; }
a:hover { color: #fff; }
a:focus-visible { outline: 2px solid #a5e6e2; outline-offset: 5px; border-radius: 2px; }
nav, footer { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 24px; }
nav a, nav span { padding-block: 10px; }
.brand { font-weight: 650; margin-right: auto; color: var(--text); text-decoration: none; }
.hero { padding: 80px 0 32px; }
.hero h1 { font-size: clamp(3.4rem, 10vw, 5.3rem); letter-spacing: -.05em; margin: 18px 0 24px; }
.page-heading { padding: 52px 0 10px; }
.page-heading h1 { font-size: clamp(2.5rem, 8vw, 3.7rem); letter-spacing: -.035em; margin: 14px 0 24px; }
.eyebrow { color: var(--accent); font-size: .75rem; letter-spacing: .2em; }
.lead { font-size: 1.2rem; line-height: 1.6; max-width: 38rem; }
.download-button { display: inline-flex; align-items: center; justify-content: center; min-height: 56px; max-width: 100%; margin-top: 8px; padding: 16px 24px; border: 1px solid var(--accent); border-radius: 14px; background: var(--accent); color: var(--bg); font-size: 1.05rem; font-weight: 650; line-height: 1.4; text-align: center; text-decoration: none; }
.download-button:hover { background: #c4f1ee; color: var(--bg); }
.muted, footer { color: var(--muted); }
.card h2 { font-size: 1.25rem; margin-top: 32px; }
.card h2:first-child { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
footer { margin-top: 48px; font-size: .9rem; justify-content: space-between; }
.skip { position: absolute; top: 8px; left: 12px; padding: 12px; background: var(--bg); transform: translateY(-150%); }
.skip:focus { transform: none; }
@media (max-width: 480px) { main { padding: 24px 20px 40px; } .hero { padding-top: 56px; } .card { padding: 24px 20px; } nav { gap: 8px 16px; } }