:root{
  --bg:#f6f8fb; --card:#ffffff; --ink:#16202e; --muted:#5b6b80; --line:#e2e8f0;
  --brand:#0f766e; --brand-soft:#e6f4f1; --accent:#1d4ed8;
  --low:#0e7490; --mod:#b45309; --high:#b91c1c; --vhigh:#7f1d1d;
  --radius:14px;
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#0e1620; --card:#151f2b; --ink:#e6edf5; --muted:#9db0c6; --line:#26374a;
         --brand:#2dd4bf; --brand-soft:#123a37; --accent:#7aa2ff;
         --low:#38bdf8; --mod:#fbbf24; --high:#f87171; --vhigh:#fca5a5; }
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:"Noto Sans TC","PingFang TC","Helvetica Neue",system-ui,-apple-system,"Microsoft JhengHei",sans-serif;
  line-height:1.7;-webkit-text-size-adjust:100%}
.wrap{max-width:960px;margin:0 auto;padding:0 18px}
.site-header{background:linear-gradient(135deg,var(--brand),#0b4f64);color:#fff;padding:28px 0 24px}
.site-header h1{margin:0 0 6px;font-size:1.6rem;letter-spacing:.02em}
.site-header .sub{margin:0;opacity:.92;font-size:.92rem}

.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:18px auto 14px}
.tab{flex:1 1 150px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:10px 12px;cursor:pointer;color:var(--ink);font:inherit;font-weight:700;text-align:left;
  display:flex;flex-direction:column;gap:2px;transition:.15s}
.tab span{font-weight:400;font-size:.78rem;color:var(--muted)}
.tab:hover{border-color:var(--brand)}
.tab.active{background:var(--brand);border-color:var(--brand);color:#fff}
.tab.active span{color:rgba(255,255,255,.85)}

.panel{display:none}
.panel.active{display:block}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin:0 0 16px}
.card h2{margin:0 0 8px;font-size:1.18rem}
.card h3{margin:0 0 8px;font-size:1rem}
.lead{margin:0 0 16px;color:var(--muted);font-size:.92rem}

.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px 16px}
.field{display:flex;flex-direction:column;gap:4px}
.field label{font-size:.82rem;font-weight:600;color:var(--muted)}
select{width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:10px;
  background:var(--bg);color:var(--ink);font:inherit;font-size:.95rem}
select:focus{outline:2px solid var(--brand);outline-offset:1px}
.field .unit{font-size:.74rem;color:var(--muted)}
.field .unit-sel{margin-top:4px;font-size:.8rem;padding:5px 8px;width:auto}

details.helper,details.optional{border:1px solid var(--line);border-radius:var(--radius);
  background:var(--card);padding:10px 16px;margin:0 0 16px}
details.optional{margin:16px 0 0;background:transparent}
summary{cursor:pointer;font-weight:600;font-size:.9rem}
.helper-body{padding-top:12px;display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;align-items:end}
.helper-out{grid-column:1/-1;font-weight:700;color:var(--brand);font-size:1.05rem}
.note{grid-column:1/-1;font-size:.78rem;color:var(--muted);margin:0}

.result{margin-top:18px;border-top:1px dashed var(--line);padding-top:16px}
.result .hint{color:var(--muted);font-size:.9rem}
.big-row{display:flex;flex-wrap:wrap;gap:12px}
.big{flex:1 1 200px;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;background:var(--bg)}
.big .k{font-size:.8rem;color:var(--muted);font-weight:600}
.big .v{font-size:2.15rem;font-weight:800;line-height:1.15;letter-spacing:-.02em}
.big .x{font-size:.8rem;color:var(--muted)}
.v.low{color:var(--low)} .v.mod{color:var(--mod)} .v.high{color:var(--high)} .v.vhigh{color:var(--vhigh)}
.badge{display:inline-block;margin-top:8px;padding:3px 10px;border-radius:999px;font-size:.78rem;font-weight:700;
  background:var(--brand-soft);color:var(--brand)}
.badge.mod{background:#fef3c7;color:#92400e}
.badge.high{background:#fee2e2;color:#991b1b}
.badge.vhigh{background:#fecaca;color:#7f1d1d}
@media (prefers-color-scheme: dark){
  .badge.mod{background:#3b2f10;color:#fcd34d}
  .badge.high{background:#3f1717;color:#fca5a5}
  .badge.vhigh{background:#4c1414;color:#fecaca}
}
.interpret{margin-top:14px;font-size:.9rem;background:var(--brand-soft);border-radius:10px;padding:12px 14px}
.interpret strong{color:var(--brand)}
.warn{margin-top:12px;font-size:.88rem;background:#fff7ed;border:1px solid #fed7aa;color:#7c2d12;border-radius:10px;padding:10px 14px}
@media (prefers-color-scheme: dark){.warn{background:#331f10;border-color:#7c4a1d;color:#fdba74}}

table.regions{width:100%;border-collapse:collapse;margin-top:16px;font-size:.88rem}
table.regions th,table.regions td{border-bottom:1px solid var(--line);padding:7px 8px;text-align:right}
table.regions th:first-child,table.regions td:first-child{text-align:left}
table.regions thead th{color:var(--muted);font-size:.8rem}
table.regions tr.sel{background:var(--brand-soft);font-weight:700}

.card.info{background:transparent;border-style:dashed}
.card.info ul{margin:0;padding-left:1.2em;font-size:.89rem}
.card.info li{margin-bottom:6px}
.cite{font-size:.8rem;color:var(--muted);margin:10px 0 0}
.refs li{color:var(--muted)}
.refs strong{color:var(--ink)}
.disclaimer{border-color:#fca5a5}
.disclaimer ul{margin:0;padding-left:1.2em;font-size:.89rem}
footer{margin:24px auto 40px;color:var(--muted);font-size:.82rem;text-align:center}

/* ---------- KDIGO 熱區圖 ---------- */
.kdigo-wrap{margin-top:18px}
.kdigo-wrap h4{margin:0 0 8px;font-size:.95rem}
.kdigo-scroll{overflow-x:auto}
table.kdigo{border-collapse:collapse;width:100%;min-width:430px;font-size:.8rem;text-align:center}
table.kdigo th,table.kdigo td{border:1px solid var(--line);padding:6px 4px}
table.kdigo thead th,table.kdigo th{background:var(--bg);font-weight:600}
table.kdigo th span{font-weight:400;font-size:.72rem;color:var(--muted)}
table.kdigo th.corner{width:34%}
table.kdigo th.rowh{text-align:left;font-size:.78rem}
table.kdigo th.rowh.hi{background:var(--brand-soft);color:var(--brand)}
td.kd{font-weight:700;color:#1f2937;position:relative;min-width:80px}
td.kd.g{background:#86efac} td.kd.y{background:#fde68a}
td.kd.o{background:#fdba74} td.kd.r{background:#fca5a5} td.kd.dr{background:#f87171}
td.kd.here{outline:3px solid #111;outline-offset:-3px}
td.kd.here b{display:block;font-size:.68rem;font-weight:800;margin-top:2px}
.kdigo-legend{margin-top:8px;font-size:.76rem;color:var(--muted);display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.kdigo-legend .sw{display:inline-block;width:14px;height:12px;border:1px solid var(--line);margin-left:10px}
.kdigo-legend .sw:first-child{margin-left:0}
.sw.g{background:#86efac}.sw.y{background:#fde68a}.sw.o{background:#fdba74}.sw.r{background:#fca5a5}

/* ---------- 列印鈕 ---------- */
.actions{margin-top:14px}
.print-btn{font:inherit;font-size:.86rem;padding:8px 16px;border-radius:999px;cursor:pointer;
  border:1px solid var(--brand);background:transparent;color:var(--brand)}
.print-btn:hover{background:var(--brand);color:#fff}

/* ---------- 列印版 ---------- */
#printSheet{display:none}
@media print{
  body > *{display:none !important}
  body > #printSheet{display:block !important}
  @page{size:A4 portrait;margin:14mm}
  body{background:#fff;color:#000;font-size:10.5pt}
  #printSheet{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .ps-head{display:flex;justify-content:space-between;align-items:flex-end;
    border-bottom:2px solid #000;padding-bottom:6px;margin-bottom:12px}
  .ps-head h1{margin:0;font-size:15pt}
  .ps-sub{margin:2px 0 0;font-size:9pt;color:#444}
  .ps-meta{font-size:8.5pt;color:#444;text-align:right}
  .ps-cols{display:grid;grid-template-columns:34% 1fr;gap:14px;align-items:start}
  #printSheet h2{font-size:10.5pt;margin:0 0 6px;border-bottom:1px solid #999;padding-bottom:3px}
  .ps-inputs table{width:100%;border-collapse:collapse;font-size:9pt}
  .ps-inputs th{text-align:left;font-weight:500;color:#333;padding:2.5px 6px 2.5px 0;width:46%;vertical-align:top}
  .ps-inputs td{padding:2.5px 0;font-weight:700;vertical-align:top}
  .ps-inputs .u{font-weight:400;color:#555;font-size:8pt}
  #printSheet .no-print{display:none}
  #printSheet .result{border:0;padding:0;margin:0}
  #printSheet .big-row{display:flex;gap:8px}
  #printSheet .big{border:1px solid #999;border-radius:6px;padding:8px;background:#fff}
  #printSheet .big .v{font-size:19pt}
  #printSheet .badge{border:1px solid #666;background:#fff !important;color:#000 !important}
  #printSheet .interpret{background:#f2f2f2 !important;border:1px solid #ccc;font-size:9pt;padding:7px}
  #printSheet .warn{border:1px solid #666;background:#fff !important;color:#000 !important;font-size:9pt}
  #printSheet table.regions{font-size:8.5pt}
  #printSheet table.regions tr.sel{background:#eee !important}
  #printSheet .kdigo-wrap{margin-top:10px;break-inside:avoid}
  #printSheet table.kdigo{font-size:8pt;min-width:0}
  #printSheet .actions{display:none}
  .ps-foot{margin-top:14px;padding-top:6px;border-top:1px solid #999;font-size:8pt;color:#333}
}

label.optin{display:flex;gap:8px;align-items:center;margin:10px 0 14px;font-size:.88rem}
label.optin input{width:16px;height:16px}
.delta{margin-top:8px;font-size:.84rem;color:var(--muted)}

.field.wide{grid-column:1/-1}
.tw-box{border:1px solid var(--brand);border-radius:var(--radius);background:var(--brand-soft);
  padding:14px 16px;margin:0 0 18px;font-size:.9rem}
.tw-box h3{margin:0 0 8px;color:var(--brand);font-size:1rem}
.tw-box p{margin:0 0 8px}
.tw-box p:last-child{margin-bottom:0}
ul.tw-cmp{margin:0 0 10px;padding-left:1.2em}
ul.tw-cmp li{margin:0}
ul.tw-cmp b{font-variant-numeric:tabular-nums}
@media (max-width:720px){ .tab{flex:1 1 140px} }