:root{--ink:#1d2433;--muted:#5b6475;--line:#e6e8ee;--accent:#2f6f5e;--bg:#fbfaf7}
*{box-sizing:border-box}body{margin:0;font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:960px;margin:0 auto;padding:0 24px}
header{border-bottom:1px solid var(--line);background:#fff}header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{font-weight:700;font-size:19px;color:var(--ink);letter-spacing:.2px}.logo span{color:var(--accent)}
nav a{margin-left:22px;color:var(--muted);font-size:15px}nav a.on{color:var(--ink);font-weight:600}
.hero{padding:72px 0 48px}.hero h1{font-size:40px;line-height:1.2;margin:0 0 16px;max-width:720px}.hero p{font-size:18px;color:var(--muted);max-width:640px;margin:0 0 28px}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:11px 20px;border-radius:6px;font-weight:600}.btn:hover{text-decoration:none;opacity:.92}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin:24px 0 56px}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:22px}.card h3{margin:0 0 8px;font-size:18px}.card p{margin:0;color:var(--muted);font-size:15px}
section h2{font-size:26px;margin:40px 0 8px}.lead{color:var(--muted);margin:0 0 8px}
.post{max-width:700px;padding:48px 0 64px}.post h1{font-size:34px;line-height:1.25;margin:0 0 8px}.meta{color:var(--muted);font-size:14px;margin-bottom:28px}
.post h2{font-size:22px;margin:32px 0 8px}.post pre{background:#f1f2f5;padding:14px;border-radius:6px;overflow:auto;font-size:14px}
.list{list-style:none;padding:0;margin:24px 0 64px}.list li{padding:18px 0;border-bottom:1px solid var(--line)}.list li a{font-size:19px;font-weight:600}.list li p{margin:4px 0 0;color:var(--muted)}
footer{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:14px;background:#fff}footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
@media(max-width:640px){.hero h1{font-size:30px}nav a{margin-left:14px}}