:root{--bg:#f2f6f3;--card:#fff;--text:#0b1f1b;--muted:#4d5e59;--green:#0b7a63;--mint:#2ee6a6;--anchor:#0b3b35;--line:#dfe8e3}
@media (prefers-color-scheme:dark){:root{--bg:#050706;--card:#0e1512;--text:#e8f1ed;--muted:#9fb2ab;--green:#3ddc97;--line:#1d2a25}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.7 -apple-system,BlinkMacSystemFont,"Helvetica Neue","Sukhumvit Set","Thonburi",sans-serif}
main{max-width:720px;margin:0 auto;padding:40px 22px 80px}a{color:var(--green)}
.top{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:700}.top img{width:30px;height:30px;border-radius:8px}
nav.lang{float:right;font-size:14px;margin-top:6px}nav.lang a{margin-left:12px}
h1{font-size:32px;letter-spacing:-.02em;line-height:1.25;margin:26px 0 4px}h2{font-size:19px;margin:30px 0 4px}h3{font-size:16px;margin:20px 0 2px}
p,li{color:var(--muted)}small{color:var(--muted)}hr{border:0;border-top:1px solid var(--line);margin:48px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px 20px;margin:14px 0}
.btn{display:inline-block;background:var(--mint);color:var(--anchor);font-weight:600;text-decoration:none;padding:12px 22px;border-radius:999px}
footer{margin-top:56px;font-size:14px;color:var(--muted)}footer a{margin-right:16px}