:root{--ink:#111;--muted:#6b7280;--line:#e5e7eb;--blue:#2563eb;--green:#15803d;--greenbg:#f0fdf4;--red:#b91c1c;--redbg:#fef2f2;--amber:#b45309;--amberbg:#fffbeb}
*{box-sizing:border-box}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:#fafafa}
header.top{background:#fff;border-bottom:1px solid var(--line);padding:14px 20px}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
.brand{font-weight:700;font-size:15px;color:#111;text-decoration:none}
.brand span{color:var(--blue)}
nav.main{margin-top:8px;display:flex;gap:16px;flex-wrap:wrap;font-size:13.5px}
nav.main a{color:#4b5563;text-decoration:none}
nav.main a:hover{color:var(--blue);text-decoration:underline}
h1{font-size:26px;line-height:1.25;margin:26px 0 6px}
.lede{color:var(--muted);font-size:15.5px;margin:0 0 18px}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;margin:14px 0}
.cta{background:#eff6ff;border:1px solid #bfdbfe;border-radius:12px;padding:16px 18px;margin:20px 0}
.cta a{color:var(--blue);font-weight:600}
.cta p{margin:0 0 8px;font-size:15px;color:#1e3a8a}
.btn{display:inline-block;appearance:none;border:0;background:var(--blue);color:#fff!important;font:600 15px/1.2 inherit;padding:11px 20px;border-radius:9px;cursor:pointer;text-decoration:none}
.adslot{border:1px dashed #d1d5db;border-radius:8px;color:#9ca3af;font-size:12px;text-align:center;padding:18px 10px;margin:16px 0}
section h2{font-size:19px;margin:30px 0 8px}
section h3{font-size:16px;margin:20px 0 6px}
section p,section li{color:#374151;font-size:15.5px}
ul,ol{padding-left:22px}
table{width:100%;border-collapse:collapse;margin:14px 0;font-size:14.5px;background:#fff}
th,td{padding:9px 10px;border:1px solid var(--line);text-align:left}
thead th{background:#f3f4f6;font-size:12.5px;text-transform:uppercase;letter-spacing:.02em;color:var(--muted)}
.tip{background:var(--amberbg);border:1px solid #fde68a;border-radius:8px;padding:12px 14px;font-size:14.5px;color:#78350f;margin:14px 0}
.good-box{background:var(--greenbg);border:1px solid #bbf7d0;border-radius:8px;padding:12px 14px;font-size:14.5px;color:#14532d;margin:14px 0}
footer{color:var(--muted);font-size:12.5px;padding:26px 0 40px;line-height:1.7;border-top:1px solid var(--line);margin-top:34px}
footer a{color:#6b7280}
.related{margin:26px 0 0;padding:16px;background:#fff;border:1px solid var(--line);border-radius:12px}
.related h2{font-size:15px;margin:0 0 8px;text-transform:uppercase;letter-spacing:.03em;color:var(--muted)}
.related ul{margin:0;padding-left:20px}
.related li{margin:4px 0}
.related a{color:var(--blue);text-decoration:none}
@media (max-width:560px){h1{font-size:22px}}