:root{--bg:#f3f6f8;--ink:#12263a;--mut:#4d5f70;--acc:#0b6e6e;--hi:#f2b632;--line:#d5dde4;--card:#fff}
@media(prefers-color-scheme:dark){:root{--bg:#0e1a26;--ink:#e8eef3;--mut:#a3b3c1;--acc:#5fd0c7;--line:#243546;--card:#152433}}
*{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",Roboto,sans-serif}
h1,h2,h3{font-family:Georgia,"Times New Roman",serif;line-height:1.2;margin:0 0 .5em}
h1{font-size:clamp(2rem,7vw,3.2rem)}h2{font-size:1.5rem;margin-top:1.8em}h3{font-size:1.15rem}
a{color:var(--acc)}a:focus-visible,button:focus-visible{outline:3px solid var(--hi);outline-offset:2px}
.w{max-width:720px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid var(--line);background:var(--bg);position:sticky;top:0;z-index:5}
header .w{display:flex;justify-content:space-between;align-items:center;min-height:56px;flex-wrap:wrap;gap:4px 16px}
.logo{font:700 1.1rem Georgia,serif;color:var(--ink);text-decoration:none;border-bottom:4px solid var(--hi)}
nav a{margin-left:16px;color:var(--mut);text-decoration:none;font-size:.95rem}nav a:hover,nav a[aria-current]{color:var(--ink);text-decoration:underline}
.hero{padding:56px 0 32px}.hero p{font-size:1.2rem;color:var(--mut);max-width:34em}
.btn{display:inline-block;padding:12px 20px;margin:8px 10px 0 0;border-radius:6px;background:var(--ink);color:var(--bg);text-decoration:none;font-weight:600}
.btn.o{background:none;color:var(--ink);border:2px solid var(--ink)}
.card{background:var(--card);border:1px solid var(--line);border-left:5px solid var(--acc);padding:18px 20px;margin:16px 0}
.row{border-top:1px solid var(--line);padding:16px 0}.row:last-child{border-bottom:1px solid var(--line)}
footer{border-top:1px solid var(--line);margin-top:56px;padding:24px 0 40px;color:var(--mut);font-size:.9rem}
footer a{margin-right:14px}main{min-height:55vh;padding-bottom:20px}
details{border-top:1px solid var(--line);padding:12px 0}summary{cursor:pointer;font-weight:600}
@media(prefers-reduced-motion:no-preference){.hero h1{animation:u .6s ease-out}@keyframes u{from{opacity:0;transform:translateY(10px)}}}