:root{--main:#49b1f5;--main-d:#2f8fd4;--bg:#f4f8fb;--card:#fff;--text:#2c3e50;--muted:#6b7b8c;--line:#e3eaf0;--ok:#27ae60;--warn:#f39c12;--danger:#e74c3c;--radius:14px;--theme:#49b1f5;--theme2:#6dd5c4}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:17px/1.8 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;color:var(--text);background:var(--bg)}
a{color:var(--main-d)}
.t-bp{--theme:#e5534b;--theme2:#f5a25d}
.t-glu{--theme:#7b61ff;--theme2:#49b1f5}
.t-lip{--theme:#f08a24;--theme2:#f7c948}
.t-stroke{--theme:#d6336c;--theme2:#845ef7}
.t-copd{--theme:#1c9c8c;--theme2:#6dd5c4}
.hero{background:linear-gradient(135deg,var(--theme),var(--theme2));color:#fff;padding:14px 16px 70px;text-align:center}
.top{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;font-size:14px;margin-bottom:18px}
.top a{color:#fff;text-decoration:none;opacity:.92;padding:2px 8px;border-radius:20px;background:rgba(255,255,255,.15)}
.top a:hover{background:rgba(255,255,255,.3)}
.badge{width:68px;height:68px;margin:0 auto 6px;border-radius:50%;background:rgba(255,255,255,.22);border:2px solid rgba(255,255,255,.6);display:flex;align-items:center;justify-content:center;font-size:32px;font-weight:700}
.hero h1{margin:6px 0 4px;font-size:28px;letter-spacing:2px}
.hero p{margin:0 auto;max-width:640px;opacity:.95;font-size:15px}
main{max-width:880px;margin:-50px auto 30px;padding:0 12px}
section,.box{background:var(--card);border-radius:var(--radius);padding:20px 22px;margin-bottom:14px;box-shadow:0 4px 16px rgba(0,0,0,.06)}
h2{font-size:21px;margin:0 0 12px;padding-left:12px;border-left:5px solid var(--theme)}
h3{font-size:17px;margin:18px 0 6px}
p{margin:6px 0}
ul,ol{margin:6px 0;padding-left:1.4em}
li{margin:3px 0}
.lead{font-size:18px}
.keys{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-top:10px}
.key{border-radius:12px;padding:12px;text-align:center;background:#f7fafc;border:1px solid var(--line)}
.key b{display:block;font-size:24px;color:var(--theme);line-height:1.3}
.key span{font-size:14px;color:var(--muted)}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.tip{background:#f3f9fe;border-radius:10px;padding:12px 14px;border:1px solid #d6ebfb}
.tip b:first-child{color:var(--main-d)}
.alert{background:#fff4f3;border:2px solid var(--danger);border-radius:var(--radius);padding:16px 20px;margin-bottom:14px}
.alert h2{border-color:var(--danger);color:var(--danger)}
.alert .call{display:inline-block;margin-top:8px;background:var(--danger);color:#fff;border-radius:30px;padding:6px 18px;font-weight:700;text-decoration:none;font-size:18px}
.myth{display:grid;grid-template-columns:1fr;gap:8px}
.myth div{border-radius:10px;padding:10px 14px;background:#fafbfc;border:1px solid var(--line)}
.myth .x{color:var(--danger);font-weight:700}
.myth .v{color:var(--ok);font-weight:700}
table{width:100%;border-collapse:collapse;font-size:15px;margin-top:6px}
th,td{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left;vertical-align:top}
th{color:var(--muted);font-weight:normal;background:#fafcfd}
.service{background:linear-gradient(135deg,#eef8ff,#effbf8);border:1px solid #cfe9f7}
.service h2{border-color:var(--ok)}
.fast{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-top:8px}
.fast div{background:#fff;border-radius:12px;border:1px solid #f3c2d2;padding:10px;text-align:center}
.fast b{display:block;font-size:30px;color:var(--danger);line-height:1.2}
.topics{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.topic{display:block;text-decoration:none;color:var(--text);border-radius:var(--radius);padding:16px 18px;background:#fff;border:1px solid var(--line);border-top:5px solid var(--theme);transition:transform .15s,box-shadow .15s}
.topic:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(0,0,0,.08)}
.topic .badge{width:44px;height:44px;font-size:20px;margin:0 0 6px;background:var(--theme);color:#fff;border:0}
.topic h3{margin:0 0 4px}
.topic p{font-size:14px;color:var(--muted);margin:0}
.quiz label{display:flex;gap:10px;align-items:flex-start;padding:8px 10px;border-radius:8px;cursor:pointer;font-size:16px}
.quiz label:hover{background:#f5f9fc}
.quiz input{width:20px;height:20px;margin-top:4px;flex:none}
.btns{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.btn{border:0;border-radius:8px;padding:10px 18px;font-size:15px;cursor:pointer;background:var(--main);color:#fff;text-decoration:none;display:inline-block}
.btn:hover{background:var(--main-d)}
.btn.ghost{background:#eef6fc;color:var(--main-d)}
#quiz-res{display:none;margin-top:12px}
#quiz-res p{margin:4px 0}
#quiz-res.show{display:block}
.toc{display:flex;flex-wrap:wrap;gap:8px;font-size:14px}
.toc a{padding:4px 12px;border-radius:20px;background:#f1f6fa;text-decoration:none}
.related{display:flex;flex-wrap:wrap;gap:8px}
.related a{padding:6px 14px;border-radius:20px;border:1px solid var(--line);text-decoration:none;background:#fff;font-size:15px}
.disclaimer{font-size:13px;color:var(--muted);text-align:center;line-height:1.7;margin:10px 0}
footer{text-align:center;font-size:13px;color:var(--muted);padding:10px 0 30px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:rgba(0,0,0,.78);color:#fff;padding:8px 16px;border-radius:20px;font-size:14px;display:none}
@media (max-width:520px){body{font-size:16px}.hero h1{font-size:24px}section,.box{padding:16px}}
@media print{
  body{background:#fff;font-size:13pt}
  .no-print,.top,.toc,.btns,.related,.toast{display:none!important}
  .hero{background:none!important;color:var(--text);padding:0 0 6px;border-bottom:3px solid var(--theme)}
  .hero .badge{display:none}
  main{margin:10px 0 0;max-width:none;padding:0}
  section,.box,.alert{box-shadow:none;border:1px solid #ccc;break-inside:avoid;padding:10px 14px;margin-bottom:8px}
  a{color:var(--text);text-decoration:none}
  .print-foot{display:block!important}
}
.print-foot{display:none;text-align:center;font-size:12px;color:#555;margin-top:8px}