:root{--bg:#ffffff;--fg:#1f2328;--muted:#59636e;--line:#d1d9e0;--card:#f6f8fa;--accent:#0969da;--accent2:#0550ae;--radius:8px}
@media (prefers-color-scheme:dark){:root{--bg:#0d1117;--fg:#e6edf3;--muted:#9198a1;--line:#30363d;--card:#151b23}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16.5px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;line-height:1.7}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:3px}a:hover{color:var(--accent2)}
.wrap{max-width:1040px;margin:0 auto;padding:0 22px}
header.site{border-bottom:1px solid var(--line);background:var(--card)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:66px}
.brand{display:flex;align-items:center;gap:10px;color:var(--fg);text-decoration:none;font:650 1.2rem/1.3 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:1.25rem;letter-spacing:0}
.brand svg{width:30px;height:30px}nav.main a{color:var(--muted);text-decoration:none;margin-left:20px;font-size:.95rem}nav.main a:hover,nav.main a.on{color:var(--fg)}
.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center;padding:56px 0 40px}
.hero h1{font:650 1.2rem/1.3 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:clamp(2rem,4vw,2.9rem);line-height:1.15;margin:0 0 14px}.hero p{color:var(--muted);font-size:1.08rem;margin:0 0 20px}
.hero .art{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--card)}.hero .art svg{display:block;width:100%;height:auto}
.btn{display:inline-block;padding:9px 16px;border-radius:999px;background:var(--accent);color:#fff;text-decoration:none;font-size:.95rem}.btn:hover{color:#fff;filter:brightness(1.08)}
.btn.ghost{background:transparent;color:var(--fg);border:1px solid var(--line);margin-left:8px}
h2.sec{font:650 1.2rem/1.3 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:1.35rem;margin:34px 0 16px;display:flex;justify-content:space-between;align-items:baseline}h2.sec a{font:inherit;font-size:.9rem;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 20px 16px;display:flex;flex-direction:column;transition:transform .15s}.card:hover{transform:translateY(-2px)}
.card h3{margin:6px 0 8px;font:650 1.2rem/1.3 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:1.12rem;line-height:1.35}.card h3 a{color:var(--fg);text-decoration:none}.card p{color:var(--muted);margin:0 0 12px;font-size:.95rem}
.meta{color:var(--muted);font-size:.85rem}.tag{display:inline-block;font-size:.78rem;padding:2px 9px;border-radius:999px;background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent);margin:0 6px 6px 0;text-decoration:none}
.feature{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--card)}.feature .txt{padding:26px}.feature svg{width:100%;height:100%;display:block}
article.post{max-width:720px;margin:0 auto;padding:42px 0 20px}article.post h1{font:650 1.2rem/1.3 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:clamp(1.8rem,3.4vw,2.4rem);line-height:1.2;margin:10px 0}
article.post .lead{font-size:1.12rem;color:var(--muted)}article.post h2{font:650 1.2rem/1.3 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:1.3rem;margin:30px 0 8px}
article.post table{border-collapse:collapse;width:100%;margin:14px 0;font-size:.95rem}article.post th,article.post td{border-bottom:1px solid var(--line);padding:7px 8px;text-align:left}
article.post pre{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:14px;overflow:auto;font:13.5px/1.55 ui-monospace,SFMono-Regular,Menlo,monospace}
article.post code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em}article.post blockquote{margin:18px 0;padding:6px 18px;border-left:3px solid var(--accent);color:var(--muted)}
article.post .figure{margin:22px 0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}article.post .figure svg{display:block;width:100%;height:auto}
.postnav{display:flex;justify-content:space-between;gap:16px;max-width:720px;margin:28px auto 0;padding-top:18px;border-top:1px solid var(--line);font-size:.95rem}
.archive li{list-style:none;padding:8px 0;border-bottom:1px dashed var(--line);display:flex;justify-content:space-between;gap:12px}.archive ul{padding:0}
.about{max-width:720px;margin:0 auto;padding:42px 0}.about h1{font:650 1.2rem/1.3 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:2rem}
footer.site{margin-top:56px;border-top:1px solid var(--line);background:var(--card)}footer.site .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:22px;color:var(--muted);font-size:.88rem}footer.site a{color:var(--muted)}
.newsletter{margin-top:34px;padding:22px;border:1px dashed var(--line);border-radius:var(--radius);display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
@media (max-width:760px){.hero,.feature{grid-template-columns:1fr}nav.main a{margin-left:12px}}