:root { --max: 980px; }*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Helvetica,Arial,sans-serif;line-height:1.6;color:#111}a{color:inherit}header{border-bottom:1px solid #eee;background:#fff;position:sticky;top:0;z-index:10}.nav{max-width:var(--max);margin:0 auto;display:flex;gap:24px;align-items:center;padding:14px 16px}.nav a{padding:6px 10px;border-radius:10px;text-decoration:none}.nav a.active, .nav a:hover{background:#f2f5ff}main{max-width:var(--max);margin:0 auto;padding:24px 16px}h1{font-size:clamp(28px,3.2vw,40px);line-height:1.2;margin:0.2em 0 0.6em}h2{margin-top:1.2em}.lead{font-size:1.15rem;opacity:.92}.card{border:1px solid #eee;border-radius:16px;padding:16px 18px;margin:14px 0;background:#fff}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}footer{border-top:1px solid #eee;margin-top:40px}.footer-inner{max-width:var(--max);margin:0 auto;padding:24px 16px;font-size:.95rem;color:#444}.small{font-size:.92rem;color:#555}.kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#f7f7f7;border:1px solid #eee;border-bottom-width:2px;border-radius:6px;padding:2px 6px}ul.simple{padding-left:18px}code{background:#f7f7f7;border:1px solid #eee;border-radius:6px;padding:0 4px}.hero{display:flex;flex-direction:column;gap:10px}.badge{display:inline-block;border:1px solid #e5e7eb;border-radius:999px;padding:4px 10px;font-size:.85rem;background:#fafafa}.highlight{background:#fff8d6;border:1px solid #f5e6a7}table{border-collapse:collapse;width:100%}td,th{border:1px solid #eee;padding:8px;text-align:left}