:root{--ink:#0b0f17;--muted:#4b5563;--line:#e5e7eb;--blue:#0279b8;--bg:#fff}
@media (prefers-color-scheme:dark){:root{--ink:#eef1f5;--muted:#a3acb9;--line:#2a313c;--blue:#4cc2ff;--bg:#0d1117}header img{background:#fff;border-radius:6px;padding:4px 8px}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
header,main,footer{max-width:760px;margin:0 auto;padding:0 20px}
header{padding-top:28px;padding-bottom:12px;border-bottom:1px solid var(--line)}
header img{display:block;height:auto;max-width:222px}
h1{font-size:2rem;line-height:1.2;margin:36px 0 4px}
h2{font-size:1.15rem;margin:32px 0 6px}
.date{color:var(--muted);margin-top:0}
a{color:var(--blue)}
a:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
footer{margin-top:48px;padding-top:18px;padding-bottom:40px;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}
nav{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:14px;font-size:.92rem}
nav a{text-decoration:none}nav a[aria-current]{color:var(--ink);font-weight:600}
h3{font-size:1rem;margin:22px 0 4px}
li{margin:6px 0}
table{border-collapse:collapse;width:100%;margin:20px 0}th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line)}
.cta{margin:40px 0 0;display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px}
.btn{display:inline-block;background:var(--blue);color:#fff;padding:12px 20px;border-radius:8px;font-weight:600;text-decoration:none}
@media (prefers-color-scheme:dark){.btn{color:#0d1117}}
.scroll{overflow-x:auto}.scroll table{min-width:640px;font-size:.92rem}