:root{--bg:#F3F5F7;--card:#fff;--text:#0F172A;--muted:#64748B;--border:#E2E8F0;--primary:#0F766E;--soft:#CCFBF1}
@media (prefers-color-scheme:dark){:root{--bg:#0B1120;--card:#151E30;--text:#E8EDF5;--muted:#94A3B8;--border:#24324A;--primary:#2DD4BF;--soft:#123B3A}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
header{background:var(--primary);color:#fff;padding:28px 16px}
header .in,main{max-width:820px;margin:0 auto}
header a{color:#fff;text-decoration:none;font-weight:800;font-size:22px}
header p{margin:4px 0 0;opacity:.9}
main{padding:24px 16px 64px}
article{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:24px}
h1{font-size:28px;line-height:1.25;margin:0 0 4px}
h2{font-size:19px;margin:28px 0 8px;color:var(--primary)}
h3{font-size:16px;margin:18px 0 6px}
.meta{color:var(--muted);font-size:14px;margin-bottom:16px}
table{width:100%;border-collapse:collapse;font-size:14px;margin:8px 0}
th,td{border:1px solid var(--border);padding:8px;text-align:left;vertical-align:top}
th{background:var(--soft)}
.note{background:var(--soft);border-radius:12px;padding:12px 14px;margin:12px 0}
a{color:var(--primary)}
nav.links{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}
nav.links a{background:var(--card);border:1px solid var(--border);border-radius:999px;padding:8px 14px;text-decoration:none;font-weight:600}
footer{max-width:820px;margin:0 auto;padding:0 16px 32px;color:var(--muted);font-size:13px}
@media (max-width:600px){article{padding:18px}h1{font-size:24px}table{display:block;overflow-x:auto}}