:root{--ink:#14202b;--mute:#53616f;--teal:#0f5c5a;--soft:#e9f0ef;--line:#d5dde0;--bg:#fff}
@media(prefers-color-scheme:dark){:root{--ink:#eef2f4;--mute:#a9b5bf;--teal:#6fc7c3;--soft:#1a2630;--line:#2d3b47;--bg:#0f1820}}
*{box-sizing:border-box}html{scroll-padding-top:70px}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}
a{color:var(--teal)}
header{border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--bg);z-index:5}
.bar{max-width:960px;margin:auto;padding:14px 20px;display:flex;flex-wrap:wrap;gap:10px 28px;align-items:center;justify-content:space-between}
.brand{font:700 1.25rem Georgia,serif;text-decoration:none;color:var(--ink)}
nav a{margin-right:18px;text-decoration:none;color:var(--mute);font-size:.95rem}
nav a[aria-current]{color:var(--teal);font-weight:600}
main{max-width:960px;margin:auto;padding:48px 20px}
.hero{padding:30px 0 40px}
h1{font:700 clamp(2rem,5vw,3.2rem)/1.15 Georgia,serif;margin:0 0 18px;max-width:18em}
h2{font:700 1.5rem Georgia,serif;margin:36px 0 10px}
p,li{max-width:68ch}
.lead{font-size:1.2rem;color:var(--mute);max-width:46ch}
.btn{display:inline-block;background:var(--teal);color:#fff;padding:12px 22px;border-radius:6px;text-decoration:none;font-weight:600;margin:6px 10px 0 0}
@media(prefers-color-scheme:dark){.btn{color:#0f1820}}
.btn.alt{background:none;color:var(--teal);border:2px solid var(--teal)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:26px;margin-top:20px}
.grid div{border-top:3px solid var(--teal);padding-top:10px}
.grid h3{margin:0 0 4px;font-size:1.05rem}.grid p{margin:0;color:var(--mute);font-size:.97rem}
.box{background:var(--soft);padding:20px 24px;border-radius:8px;margin:22px 0}
footer{border-top:1px solid var(--line);color:var(--mute);font-size:.92rem}
footer .bar{padding:24px 20px}
a:focus-visible,.btn:focus-visible{outline:3px solid var(--teal);outline-offset:3px}