:root{--ink:#0b1220;--muted:#5b6475;--accent:#0f766e;--bg:#f7f8fa}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,Segoe UI,Roboto,Heebo,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
.wrap{max-width:820px;margin:0 auto;padding:40px 20px 80px}
header{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px}
.logo{font-weight:800;font-size:22px}.logo span{color:var(--accent)}
nav a{color:var(--muted);text-decoration:none;margin-left:18px;font-size:15px}
h1{font-size:34px;line-height:1.2;margin:0 0 12px}h2{font-size:21px;margin-top:34px}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:14px;padding:22px 24px;margin:18px 0}
.muted{color:var(--muted)}footer{margin-top:48px;color:var(--muted);font-size:14px}
a{color:var(--accent)}