/* 心臟科照會速查 — shared styles. Mobile-first, bedside-readable, print-friendly. */
:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-2: #eef2f7;
  --ink: #16202e;
  --muted: #5a6675;
  --line: #dde4ec;
  --brand: #b3212f;
  --brand-dark: #8d1a25;
  --accent: #0d6f8f;
  --ok-bg: #edf9f0; --ok-line: #7fc59a; --ok-ink: #14663b;
  --warn-bg: #fff6e8; --warn-line: #e6a94b; --warn-ink: #8a5a10;
  --danger-bg: #fdeeee; --danger-line: #e08787; --danger-ink: #9a2020;
  --info-bg: #eef5fb; --info-line: #86b4d8; --info-ink: #17567f;
  --tw-bg: #f3f0fb; --tw-line: #a99cd8; --tw-ink: #4b3d86;
  --maxw: 880px;
  --maxw-wide: 1180px;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10161f; --surface: #182231; --surface-2: #1f2b3c;
    --ink: #e6ecf4; --muted: #9aa8ba; --line: #2a3646;
    --brand: #f07680; --brand-dark: #f9a3aa; --accent: #5cb8d8;
    --ok-bg: #12291d; --ok-line: #2f6b47; --ok-ink: #8fd9ab;
    --warn-bg: #2b2211; --warn-line: #7a5c1c; --warn-ink: #e8bf74;
    --danger-bg: #2c1618; --danger-line: #7d3236; --danger-ink: #f0a0a4;
    --info-bg: #12222e; --info-line: #2e5b78; --info-ink: #8fc9e8;
    --tw-bg: #1d1a2c; --tw-line: #4a4076; --tw-ink: #bdb2ea;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC",
    "Microsoft JhengHei", "Noto Sans TC", sans-serif;
  font-size: 17px; line-height: 1.8;
}
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible, input:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 2px;
}
p { margin: 12px 0; }
ul, ol { padding-left: 22px; margin: 10px 0; }
li { margin: 5px 0; }
code, kbd { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9em;
  background: var(--surface-2); padding: 1px 5px; border-radius: 4px; }
abbr { text-decoration: none; border-bottom: 1px dotted var(--muted); cursor: help; }
hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }

/* ---- skip link ---- */
.skip-link {
  position: fixed; left: 12px; top: 8px; z-index: 100;
  padding: 8px 14px; background: var(--surface); color: var(--ink);
  border: 2px solid var(--accent); border-radius: 8px; transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

/* ---- top nav ---- */
.topnav {
  background: var(--surface); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 30;
}
.topnav .wrap {
  max-width: var(--maxw-wide); margin: 0 auto; padding: 9px 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 8px 16px; flex-wrap: wrap;
}
.topnav .brand {
  font-weight: 800; text-decoration: none; color: var(--ink); font-size: 1.04rem; line-height: 1.3;
}
.topnav .brand .en { display: block; color: var(--muted); font-weight: 500; font-size: .68rem; letter-spacing: .04em; }
.nav-toggle {
  display: inline-flex; align-items: center; gap: 6px; font: inherit; font-size: .88rem;
  background: var(--surface-2); color: var(--ink); border: 1px solid var(--line);
  border-radius: 8px; padding: 5px 12px; cursor: pointer;
}
.topnav .links { display: none; width: 100%; flex-direction: column; gap: 2px; padding-bottom: 6px; }
.topnav .links.open { display: flex; }
.topnav .links a { padding: 7px 4px; text-decoration: none; color: var(--ink); font-size: .95rem; border-bottom: 1px solid var(--line); }
.topnav .links a[aria-current="page"] { color: var(--brand); font-weight: 700; }
@media (min-width: 880px) {
  .nav-toggle { display: none; }
  .topnav .links { display: flex !important; flex-direction: row; width: auto; padding: 0; gap: 4px 18px; flex-wrap: wrap; }
  .topnav .links a { border-bottom: 0; padding: 4px 2px; }
}

/* ---- layout ---- */
main { max-width: var(--maxw); margin: 0 auto; padding: 22px 16px 72px; }
main.wide { max-width: var(--maxw-wide); }
h1 { font-size: 1.62rem; line-height: 1.35; margin: 6px 0 4px; letter-spacing: -.01em; }
h2 { font-size: 1.24rem; margin: 38px 0 10px; padding-top: 6px; border-top: 2px solid var(--line); }
h2:first-of-type { border-top: 0; }
h3 { font-size: 1.05rem; margin: 22px 0 6px; color: var(--brand); }
h4 { font-size: .96rem; margin: 16px 0 4px; }
.eyebrow { color: var(--brand); font-weight: 700; font-size: .78rem; letter-spacing: .12em;
  text-transform: uppercase; margin: 0; }
.lead { font-size: 1.02rem; color: var(--muted); margin: 8px 0 18px; }

/* ---- hero ---- */
.hero { background: var(--surface); border-bottom: 1px solid var(--line); }
.hero .wrap { max-width: var(--maxw-wide); margin: 0 auto; padding: 26px 16px 22px; }
.hero h1 { font-size: 1.75rem; }

/* ---- disclaimer banner ---- */
.disclaimer {
  background: var(--warn-bg); border-bottom: 1px solid var(--warn-line);
  color: var(--warn-ink); font-size: .82rem; text-align: center;
  padding: 7px 16px; margin: 0; line-height: 1.6;
}

/* ---- cards ---- */
.cards { display: grid; gap: 12px; margin: 16px 0; }
@media (min-width: 620px) { .cards.cols-2 { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) { .cards.cols-3 { grid-template-columns: repeat(3, 1fr); } }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 16px; display: block; text-decoration: none; color: inherit;
}
a.card:hover { border-color: var(--accent); }
.card h3 { margin: 2px 0 4px; color: var(--ink); font-size: 1.06rem; }
.card p { margin: 4px 0 0; font-size: .9rem; color: var(--muted); }
.card .kicker { color: var(--brand); font-size: .72rem; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; margin: 0; }

/* ---- callouts ---- */
.box { border-radius: var(--radius); padding: 12px 16px; margin: 16px 0; border: 1px solid; border-left-width: 5px; }
.box > :first-child { margin-top: 0; }
.box > :last-child { margin-bottom: 0; }
.box .t { font-weight: 700; font-size: .82rem; letter-spacing: .06em; text-transform: uppercase; display: block; margin-bottom: 4px; }
.box.key { background: var(--ok-bg); border-color: var(--ok-line); }
.box.key .t { color: var(--ok-ink); }
.box.pitfall { background: var(--danger-bg); border-color: var(--danger-line); }
.box.pitfall .t { color: var(--danger-ink); }
.box.note { background: var(--info-bg); border-color: var(--info-line); }
.box.note .t { color: var(--info-ink); }
.box.tw { background: var(--tw-bg); border-color: var(--tw-line); }
.box.tw .t { color: var(--tw-ink); }
.box.warn { background: var(--warn-bg); border-color: var(--warn-line); }
.box.warn .t { color: var(--warn-ink); }

/* ---- tables ---- */
.tablewrap { overflow-x: auto; margin: 14px 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: .9rem; min-width: 520px; }
caption { text-align: left; font-size: .82rem; color: var(--muted); padding: 10px 12px 0; caption-side: top; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { background: var(--surface-2); font-size: .8rem; letter-spacing: .04em; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
td .src { display: block; color: var(--muted); font-size: .82em; }

/* ---- COR badges ---- */
.cor { display: inline-block; font-size: .74rem; font-weight: 700; padding: 1px 7px; border-radius: 999px;
  border: 1px solid; white-space: nowrap; line-height: 1.6; }
.cor-1 { background: var(--ok-bg); border-color: var(--ok-line); color: var(--ok-ink); }
.cor-2a { background: var(--info-bg); border-color: var(--info-line); color: var(--info-ink); }
.cor-2b { background: var(--warn-bg); border-color: var(--warn-line); color: var(--warn-ink); }
.cor-3 { background: var(--danger-bg); border-color: var(--danger-line); color: var(--danger-ink); }
.cor-na { background: var(--surface-2); border-color: var(--line); color: var(--muted); }

/* ---- steps ---- */
ol.steps { list-style: none; padding: 0; counter-reset: s; margin: 14px 0; }
ol.steps > li {
  counter-increment: s; position: relative; padding: 10px 14px 10px 46px; margin: 8px 0;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
}
ol.steps > li::before {
  content: counter(s); position: absolute; left: 12px; top: 11px;
  width: 24px; height: 24px; border-radius: 50%; background: var(--brand); color: #fff;
  font-size: .8rem; font-weight: 700; display: grid; place-items: center;
}
ol.steps > li strong:first-child { display: block; }

/* ---- in-page TOC ---- */
.toc { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 16px; margin: 18px 0 26px; }
.toc .t { font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.toc ol { margin: 6px 0 0; padding-left: 20px; font-size: .92rem;
  columns: 2; column-gap: 28px; }
.toc li { break-inside: avoid; }
@media (max-width: 620px) { .toc ol { columns: 1; } }
.toc li { margin: 2px 0; }

/* ---- search / filter ---- */
.finder { margin: 18px 0 6px; }
.finder input {
  width: 100%; font: inherit; font-size: 1rem; padding: 11px 14px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); color: var(--ink);
}
.finder input::placeholder { color: var(--muted); }
.finder .count { font-size: .82rem; color: var(--muted); margin: 6px 2px 0; }
[hidden] { display: none !important; }

/* ---- misc ---- */
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 0; padding: 0; list-style: none; }
.tags li { background: var(--surface-2); border: 1px solid var(--line); color: var(--muted);
  font-size: .74rem; padding: 1px 8px; border-radius: 999px; margin: 0; }
.meta { font-size: .82rem; color: var(--muted); }
.refs { font-size: .9rem; }
.refs li { margin: 8px 0; }
footer.site {
  border-top: 1px solid var(--line); background: var(--surface);
  padding: 22px 16px 34px; font-size: .84rem; color: var(--muted);
}
footer.site .wrap { max-width: var(--maxw-wide); margin: 0 auto; }
.backtop { display: inline-block; margin-top: 8px; font-size: .85rem; }

@media print {
  .topnav, .skip-link, .finder, .backtop, footer.site { display: none; }
  body { font-size: 11pt; background: #fff; color: #000; }
  .box, .card, .tablewrap { break-inside: avoid; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 8pt; word-break: break-all; }
}

/* ---- topic strip (horizontal switcher on topic pages) ---- */
.topicstrip { background: var(--surface-2); border-bottom: 1px solid var(--line); }
.topicstrip .wrap {
  max-width: var(--maxw-wide); margin: 0 auto; padding: 8px 16px;
  display: flex; gap: 8px; overflow-x: auto; scrollbar-width: thin;
}
.topicstrip a {
  flex: 0 0 auto; text-decoration: none; font-size: .84rem; white-space: nowrap;
  padding: 4px 12px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--surface); color: var(--muted);
}
.topicstrip a[aria-current="page"] { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 700; }
@media print { .topicstrip { display: none; } }

/* ---- ask page: form ---- */
.field { margin: 14px 0 6px; }
.field label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: 5px; }
.field input[type="password"],
.field textarea {
  width: 100%; font: inherit; font-size: 1rem; padding: 10px 13px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); color: var(--ink);
}
.field textarea { resize: vertical; min-height: 150px; line-height: 1.7; }
.field input:focus, .field textarea:focus { border-color: var(--accent); }
.fieldnote { font-size: .8rem; color: var(--muted); margin: 6px 2px 0; }
kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .78em; background: var(--surface-2); border: 1px solid var(--line);
  border-bottom-width: 2px; border-radius: 4px; padding: 1px 5px;
}

.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; margin: 18px 0 8px; }
.btn {
  font: inherit; font-size: .94rem; font-weight: 600; cursor: pointer;
  padding: 9px 20px; border-radius: 999px; border: 1px solid transparent;
  text-decoration: none; display: inline-block;
}
.btn.primary { background: var(--brand); color: #fff; }
.btn.primary:hover:not(:disabled) { background: var(--brand-dark); }
.btn.ghost { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--accent); }
.btn:disabled { opacity: .55; cursor: default; }
@media (prefers-color-scheme: dark) { .btn.primary { color: #17110f; } }

/* ---- ask page: answer ---- */
#answer { margin: 4px 0 10px; }
#answer h3 {
  font-size: 1.08rem; margin: 26px 0 6px; color: var(--brand);
  padding-top: 12px; border-top: 1px solid var(--line);
}
#answer h3:first-child { border-top: 0; padding-top: 0; margin-top: 6px; }
#answer h4 { font-size: .97rem; margin: 16px 0 2px; }
#answer blockquote {
  margin: 12px 0; padding: 9px 14px; border-left: 4px solid var(--warn-line);
  background: var(--warn-bg); color: var(--warn-ink); border-radius: 0 8px 8px 0;
  font-size: .92rem;
}
#answer > p:first-child { margin-top: 4px; }

a.cite {
  display: inline-block; font-size: .76rem; line-height: 1.6;
  padding: 0 7px; margin: 0 2px; border-radius: 4px;
  background: var(--surface-2); border: 1px solid var(--line);
  color: var(--muted); text-decoration: none; white-space: nowrap;
  vertical-align: 1px;
}
a.cite:hover { border-color: var(--accent); color: var(--accent); }
a.cite::before { content: "§ "; opacity: .6; }

/* ---- fill-in template block ---- */
pre.template {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .82rem; line-height: 1.85; white-space: pre-wrap; word-break: break-word;
  background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--accent);
  border-radius: var(--radius); padding: 14px 16px; margin: 16px 0; overflow-x: auto;
}