*{box-sizing:border-box}
:root{--bg:#f7f8fa;--fg:#161a1f;--muted:#5b6570;--card:#ffffff;--line:#e6e9ee;--accent:#3a6ea5;--accent2:#2b8a7a;--hero1:#eef2f7;--hero2:#e6efec}
:root:not([data-theme=light]) body{}
@media (prefers-color-scheme:dark){:root{--bg:#0e1216;--fg:#e8edf2;--muted:#9aa7b2;--card:#161b21;--line:#232b33;--accent:#7db1e6;--accent2:#5fc7b6;--hero1:#121820;--hero2:#111c1c}}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--fg);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}
.wrap{max-width:880px;margin:0 auto;padding:0 20px}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.hero{background:linear-gradient(160deg,var(--hero1),var(--hero2));border-bottom:1px solid var(--line)}
nav.nav{display:flex;justify-content:space-between;align-items:center;padding:16px 0}
nav.nav .brand{font-weight:700;color:var(--fg);font-size:18px}
nav.nav .links a{margin-left:18px;color:var(--muted);font-size:14px}
.hero-copy{padding:40px 0 52px}
.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:12px;font-weight:700;color:var(--accent2);margin:0 0 8px}
h1{font-size:2.4rem;line-height:1.1;margin:.1em 0 .3em}
.sub{font-size:1.2rem;color:var(--muted);margin:0 0 18px}
.lead{font-size:1.08rem;max-width:60ch}
.facts{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.facts span{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:13px;color:var(--muted)}
.band{padding:44px 0;border-bottom:1px solid var(--line)}
.band h2{font-size:1.5rem;margin:0 0 6px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}
@media(max-width:640px){.grid{grid-template-columns:1fr}h1{font-size:1.9rem}}
.feat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;font-size:.98rem}
.feat b{color:var(--accent2)}
.para{max-width:64ch;color:var(--fg)}
.muted{color:var(--muted)}
footer{padding:30px 0;color:var(--muted);font-size:13px}
h2{scroll-margin-top:20px}
ul.plain{padding-left:1.1em}ul.plain li{margin:.3em 0}
.callout{background:var(--card);border:1px solid var(--line);border-left:3px solid var(--accent2);border-radius:8px;padding:14px 16px;margin:18px 0}