:root{--ink:#1d2430;--mute:#5b6675;--line:#e3e7ec;--acc:#0f6b5e;--bg:#fbfcfd}
*{box-sizing:border-box}body{margin:0;font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
header{border-bottom:1px solid var(--line);background:#fff}.wrap{max-width:860px;margin:0 auto;padding:0 20px}
nav{display:flex;gap:18px;align-items:center;height:60px}nav a{color:var(--ink);text-decoration:none;font-weight:500}nav .brand{font-weight:700;margin-right:auto;color:var(--acc)}
main{padding:40px 0 60px}h1{font-size:2rem;line-height:1.2;margin:0 0 12px}h2{font-size:1.25rem;margin:32px 0 8px}p{margin:0 0 14px}.lead{font-size:1.15rem;color:var(--mute);max-width:640px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin:28px 0}.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px}.card h3{margin:0 0 6px;font-size:1rem}.card p{margin:0;color:var(--mute);font-size:.95rem}
footer{border-top:1px solid var(--line);padding:18px 0;color:var(--mute);font-size:.9rem}footer a{color:var(--mute)}
.note{background:#eef6f4;border-left:4px solid var(--acc);padding:12px 14px;border-radius:6px}
ul{padding-left:20px}