:root { --brand: #0D9488; --bg: #f5f5f7; --card: #ffffff; --text: #1c1c1e; --muted: #6e6e73; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", Roboto, sans-serif;
  line-height: 1.65; }
header { background: linear-gradient(160deg, #14A89B, #0A7068); color: #fff; padding: 40px 20px 32px; text-align: center; }
header .ring { width: 56px; height: 56px; border: 7px solid rgba(255,255,255,.35); border-top-color: #fff;
  border-radius: 50%; margin: 0 auto 14px; }
header h1 { margin: 0; font-size: 1.7rem; letter-spacing: -.02em; }
header p { margin: 6px 0 0; opacity: .9; font-size: .95rem; }
nav { text-align: center; padding: 14px; background: var(--card); border-bottom: 1px solid #e5e5ea; }
nav a { color: var(--brand); text-decoration: none; margin: 0 12px; font-weight: 600; font-size: .95rem; }
main { max-width: 760px; margin: 0 auto; padding: 28px 20px 60px; }
.card { background: var(--card); border-radius: 16px; padding: 24px 26px; margin: 18px 0; }
h2 { color: var(--brand); font-size: 1.25rem; margin: 28px 0 10px; }
h3 { font-size: 1.02rem; margin: 18px 0 4px; }
.lang-tag { display: inline-block; font-size: .72rem; font-weight: 700; color: #fff; background: var(--brand);
  padding: 3px 9px; border-radius: 20px; margin-bottom: 6px; letter-spacing: .03em; }
.muted { color: var(--muted); }
.updated { color: var(--muted); font-size: .85rem; }
ul { padding-left: 20px; }
li { margin: 5px 0; }
footer { text-align: center; color: var(--muted); font-size: .82rem; padding: 24px; }
a { color: var(--brand); }
hr { border: none; border-top: 1px solid #e5e5ea; margin: 36px 0; }