:root { --bg:#f6f7f9; --card:#ffffff; --text:#17202a; --muted:#5f6b76; --line:#dfe4e8; --accent:#2f5d62; --accent2:#24484c; --max:980px; }
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",sans-serif;line-height:1.6}
a{color:var(--accent);text-decoration:none} a:hover{text-decoration:underline}
header{background:rgba(255,255,255,.92);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;backdrop-filter:blur(14px)}
.nav{max-width:var(--max);margin:auto;padding:16px 24px;display:flex;gap:22px;align-items:center;flex-wrap:wrap}.brand{font-weight:750;color:var(--text);margin-right:auto}.nav a:not(.brand){font-size:.95rem;color:#3d4852}
main{max-width:var(--max);margin:auto;padding:64px 24px 80px}.hero{padding:30px 0 34px}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:700;color:var(--accent)}h1{font-size:clamp(2.35rem,6vw,4.8rem);line-height:1.04;letter-spacing:-.045em;margin:.25em 0 .3em}h2{font-size:1.65rem;letter-spacing:-.02em;margin-top:2.2em}h3{font-size:1.08rem;margin-bottom:.3em}.lead{font-size:1.22rem;color:var(--muted);max-width:760px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin:30px 0}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 8px 30px rgba(30,45,55,.04)}.card h3{margin-top:0}.button{display:inline-block;background:var(--accent);color:white;padding:11px 16px;border-radius:10px;font-weight:650}.button:hover{background:var(--accent2);text-decoration:none}.note{background:#eef3f3;border-left:4px solid var(--accent);padding:14px 18px;border-radius:8px;color:#34454a}.meta{color:var(--muted);font-size:.94rem}ul,ol{padding-left:1.35rem}li{margin:.35rem 0}code{background:#eceff1;padding:.1em .3em;border-radius:4px}footer{border-top:1px solid var(--line);background:#fff}.footer{max-width:var(--max);margin:auto;padding:30px 24px;color:var(--muted);font-size:.88rem}.footer p{margin:.35em 0}@media(max-width:620px){main{padding-top:38px}.nav{gap:12px}.brand{width:100%}h1{font-size:2.65rem}}