/* Shared colors echo the desktop's deep-blue surfaces and sea-glass accents. */
:root{color-scheme:dark;--bg:#071b27;--ink:#edf5f4;--muted:#a4b9c0;--mint:#91e7d3;--line:#29404a;font-family:Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--ink)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(ellipse at 85% 22%,#16415188,transparent 48%),var(--bg)}a{color:inherit}a:focus-visible,summary:focus-visible{outline:3px solid var(--mint);outline-offset:6px}.shell{width:min(1160px,calc(100% - 64px));margin:auto}header{display:flex;justify-content:space-between;align-items:center;padding:30px 0;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-weight:700;letter-spacing:.24em;text-decoration:none;font-size:18px}nav{display:flex;gap:32px}nav a{text-decoration:none;font-size:14px;color:var(--muted)}nav a:hover,.secondary:hover{color:var(--mint)}.hero{min-height:620px;display:grid;grid-template-columns:1.2fr 1fr;align-items:center;gap:40px;padding-top:70px;padding-bottom:80px}.eyebrow,.number{font-size:11px;font-weight:650;letter-spacing:.19em;color:var(--mint)}h1{font-size:clamp(48px,6.5vw,84px);line-height:1.04;font-weight:500;letter-spacing:-.055em;margin:26px 0}h1 em{font-style:normal;color:var(--mint)}.intro{font-size:18px;line-height:1.75;color:var(--muted);margin:24px 0 32px}.button{display:inline-flex;justify-content:space-between;align-items:center;gap:36px;background:var(--mint);color:#09262c;padding:18px 24px;border-radius:5px;font-size:15px;font-weight:700;text-decoration:none}.button:hover{background:#b6f4e4}.caption{font-size:12px;color:var(--muted);margin-top:18px}.emblem{position:relative;display:grid;place-items:center;aspect-ratio:1}.emblem img{width:78%;height:auto;filter:drop-shadow(0 0 50px #7de5d426)}.emblem span{position:absolute;bottom:0;font-size:10px;letter-spacing:.36em;color:var(--muted)}.orbit{position:absolute;inset:0;border:1px solid #71c9c321;border-radius:50%;box-shadow:0 0 0 24px #70c4c105,0 0 0 48px #70c4c103}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:42px;padding:46px 0 66px;border-top:1px solid var(--line)}h2{font-weight:500;letter-spacing:-.025em}.features h2{font-size:23px;margin-top:22px}.features p,.help p{color:var(--muted);font-size:15px;line-height:1.8}.download{display:flex;justify-content:space-between;gap:40px;align-items:center;background:#102d39;border:1px solid #32505a;border-radius:10px;padding:44px}.download h2{font-size:36px;margin:18px 0}.download p{font-size:14px}.muted{color:var(--muted);line-height:1.8}.download-actions{display:flex;flex-direction:column;gap:20px;text-align:center}.secondary{font-size:14px;text-decoration:none}.checksum{font-size:12px;color:var(--muted)}.help{padding-top:65px;padding-bottom:65px}.help h2{font-size:30px}details{border-bottom:1px solid var(--line);padding:21px 0}summary{cursor:pointer;font-size:16px}details p{max-width:750px}footer{padding:28px 0 38px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px;color:var(--muted);font-size:12px}footer .brand{font-size:14px}
/* Stack the hero and download actions for narrow screens without hiding content. */
@media(max-width:720px){.shell{width:calc(100% - 36px)}header{padding:22px 0}nav{gap:18px}.hero{grid-template-columns:1fr;padding-top:52px;gap:38px}.emblem{width:240px;margin:auto}.features{grid-template-columns:1fr;gap:22px}.download{flex-direction:column;align-items:stretch;padding:26px}.download h2{font-size:30px}footer{flex-wrap:wrap}.hero-copy h1{font-size:62px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}