:root{--ink:#1b1f24;--muted:#5b6470;--line:#e3e6ea;--accent:#0b5d5d;--bg:#fff}
*{box-sizing:border-box}body{margin:0;font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
.site-header,.site-footer,main{max-width:72ch;margin:0 auto;padding:16px 20px}
.site-header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line)}
.brand{font-weight:700;text-decoration:none;color:var(--ink);font-size:1.15rem}
nav ul{display:flex;gap:18px;list-style:none;margin:0;padding:0}nav a{color:var(--muted);text-decoration:none}nav a:hover{color:var(--accent)}
h1{font-size:2rem;line-height:1.2;margin:.6em 0 .4em}h2{font-size:1.4rem;margin-top:1.6em}
a{color:var(--accent)}img,video{max-width:100%;height:auto}audio{width:100%}
.meta,.site-footer{color:var(--muted);font-size:.92rem}.site-footer{border-top:1px solid var(--line);margin-top:48px}
.summary{padding:18px 0;border-bottom:1px solid var(--line)}.summary h2{margin:0 0 4px}.summary h2 a{text-decoration:none}
.tag{display:inline-block;padding:2px 8px;border:1px solid var(--line);border-radius:999px;font-size:.8rem;color:var(--muted)}
pre{overflow-x:auto;background:#f4f5f7;padding:12px;border-radius:6px}code{font-family:ui-monospace,Menlo,monospace;font-size:.92em}