:root { --teal:#1FB6AB; --deep:#147f78; --ink:#15201e; --sub:#4a5b58; --bg:#f6fbfa; --line:#e2efed; }
* { box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; }
body { margin:0; font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink); background:var(--bg); line-height:1.6; }
.wrap { max-width:760px; margin:0 auto; padding:32px 22px 80px; }
header.brand { display:flex; align-items:center; gap:12px; padding:22px; }
header.brand .mark { width:42px; height:42px; border-radius:13px;
  background:linear-gradient(135deg,var(--teal),var(--deep)); display:flex; align-items:center; justify-content:center;
  color:#fff; font-weight:900; font-size:22px; }
header.brand b { font-size:20px; letter-spacing:-0.3px; }
h1 { font-size:30px; letter-spacing:-0.5px; margin:8px 0 4px; }
.updated { color:var(--sub); font-weight:600; font-size:14px; margin-bottom:28px; }
h2 { font-size:20px; margin:34px 0 8px; }
p, li { color:#26302e; }
a { color:var(--deep); font-weight:600; }
.card { background:#fff; border:1px solid var(--line); border-radius:18px; padding:20px 22px; margin:18px 0; }
.note { background:#fff7ed; border:1px solid #f6dcb8; border-radius:14px; padding:14px 18px; color:#7a4f12; font-weight:600; }
footer { color:var(--sub); font-size:13px; border-top:1px solid var(--line); margin-top:48px; padding-top:20px; }
footer a { margin-right:16px; }