*{box-sizing:border-box}body{margin:0;font:17px/1.65 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#1d2733;background:#fff}
a{color:#0b6fb8}header{border-bottom:1px solid #e3e8ee;background:#fff}.wrap{max-width:860px;margin:0 auto;padding:0 18px}
.top{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;padding:10px 0}.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:#0f3a5c;text-decoration:none;font-size:20px}
.brand img{width:40px;height:40px}nav a{margin-left:14px;text-decoration:none;color:#33475b;font-size:15px}nav a:hover{color:#0b6fb8}
main{padding:22px 0 40px}h1{font-size:32px;line-height:1.2;color:#0f3a5c;margin:.4em 0}h2{font-size:24px;color:#0f3a5c;margin-top:1.8em}h3{font-size:19px}
.disc{background:#f3f7fb;border-left:4px solid #0b6fb8;padding:10px 14px;font-size:14.5px;border-radius:4px}.meta{color:#5b6b7b;font-size:14px}
table{border-collapse:collapse;width:100%;font-size:15px;margin:1em 0;display:block;overflow-x:auto}th,td{border:1px solid #dde3ea;padding:8px;text-align:left;vertical-align:top}th{background:#f3f7fb}
.card{display:flex;gap:16px;border:1px solid #dde3ea;border-radius:10px;padding:14px;margin:1.6em 0;background:#fbfcfe;align-items:center}.card img{width:200px;max-width:40%;height:auto;border-radius:6px}
.btn{display:inline-block;background:#0b6fb8;color:#fff;padding:9px 16px;border-radius:6px;text-decoration:none;font-weight:600}.btn:hover{background:#095a95}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}.grid .g{border:1px solid #dde3ea;border-radius:10px;padding:14px}
.note{font-size:14px;color:#5b6b7b}.ex{background:#fffbea;border:1px solid #f0e2a8;padding:10px 14px;border-radius:6px}
footer{border-top:1px solid #e3e8ee;background:#f7f9fb;padding:20px 0;font-size:14px;color:#4a5a6a}footer a{margin-right:12px}
@media(max-width:600px){h1{font-size:26px}.card{flex-direction:column}.card img{max-width:100%;width:100%}nav a{margin:0 12px 0 0}}