* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: "Noto Sans CJK HK", "Noto Sans TC", "PingFang TC", "PingFang HK", "Microsoft JhengHei", "Heiti TC", "Source Sans 3", "Noto Sans", system-ui, sans-serif;
  font-size: 20px;
  line-height: 1.55;
  color: #12343f;
  background: #e8f4f3;
  padding: 20px 16px 40px;
  overflow-x: hidden;
}
.page { max-width: 1100px; margin: 0 auto; }
img, svg, video { max-width: 100%; height: auto; }
img.fig, figure img, .diagram svg {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  background: #f7fbfb;
}
header.banner {
  background: #0d7377;
  color: #fff;
  padding: 22px 28px;
  border-radius: 0;
}
.sitenav {
  background: #095c5f;
  color: #d7eeed;
  padding: 10px 28px;
  font-size: 16px;
  border-radius: 12px 12px 0 0;
  line-height: 1.45;
}
.sitenav a { color: #fff; text-decoration: none; font-weight: 700; }
.sitenav a:hover { text-decoration: underline; }
header.banner h1 { font-size: 30px; font-weight: 700; letter-spacing: 0.02em; }
header.banner p { font-size: 18px; margin-top: 6px; opacity: 0.95; }
.card {
  background: #fff;
  border: 2px solid #0d7377;
  border-top: none;
  border-radius: 0 0 12px 12px;
  overflow: hidden;
}
.intro, .sec, .foot { padding: 20px 28px; }
.notice {
  background: #fff6e8;
  border-bottom: 1px solid #e6d2b0;
  color: #6a3f00;
  font-size: 18px;
  padding: 16px 28px;
}
.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  padding: 16px 28px;
  border-bottom: 1px solid #cce5e3;
  background: #f3faf9;
}
.toc a {
  color: #0d7377;
  text-decoration: none;
  font-size: 16px;
  border: 1px solid #0d7377;
  border-radius: 999px;
  padding: 4px 12px;
  white-space: normal;
  overflow-wrap: break-word;
  max-width: 100%;
  line-height: 1.35;
}
.toc a:hover { background: #e8f4f3; }
.intro { border-bottom: 1px solid #cce5e3; }
.sec { border-bottom: 1px solid #cce5e3; }
.sec h2 { font-size: 22px; color: #0d7377; margin-bottom: 12px; }
.sec h3 { font-size: 20px; color: #0d7377; margin: 18px 0 8px; }
.pair {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin: 12px 0;
}
.trio {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 12px 0;
}
.cap { font-size: 18px; color: #1b3a40; padding: 10px 0 2px; }
.credit { font-size: 14px; color: #5a6f74; padding: 0 0 6px; }
.foot { font-size: 15px; color: #5a6f74; background: #f3faf9; }
.foot p { margin: 8px 0; }
ul, ol { margin: 8px 0 8px 1.35em; }
li { margin: 7px 0; }
p { margin: 0 0 12px; }
a { color: #0d7377; }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; max-width: 100%; margin: 12px 0 16px; }
table { width: 100%; border-collapse: collapse; font-size: 18px; }
th, td { border: 1px solid #b7d4d2; padding: 10px 12px; text-align: left; vertical-align: top; overflow-wrap: break-word; }
th { background: #0d7377; color: #fff; font-weight: 700; }
tr:nth-child(even) td { background: #f3faf9; }
.warn {
  background: #fdecee;
  border: 2px solid #9b2c3a;
  border-radius: 10px;
  padding: 16px 18px;
  margin: 8px 0 0;
}
.warn h3 { color: #9b2c3a; margin: 0 0 8px; }
.box {
  background: #f3faf9;
  border: 1px solid #b7d4d2;
  border-radius: 10px;
  padding: 14px 16px;
  margin: 12px 0;
}
.anatomy { max-width: 820px; margin: 12px auto; }

/* Nursing care tips — teal theme, two clear sub-boxes */
.nursing {
  background: #f7fbfb;
  border: 2px solid #0d7377;
  border-radius: 10px;
  padding: 16px 16px 18px;
  margin: 16px 0 4px;
}
.nursing > h3 {
  color: #0d7377;
  margin: 0 0 12px;
  font-size: 22px;
}
.nursing-sub {
  background: #f3faf9;
  border: 1px solid #b7d4d2;
  border-left: 6px solid #0d7377;
  border-radius: 8px;
  padding: 12px 14px 14px;
  margin: 0 0 12px;
}
.nursing-sub:last-child { margin-bottom: 0; }
.nursing-sub.postop {
  border-left-color: #095c5f;
  background: #eef7f6;
}
.nursing-sub h4 {
  color: #0d7377;
  font-size: 18px;
  margin: 0 0 8px;
  font-weight: 700;
}
.nursing-sub ul { margin: 4px 0 0 1.25em; }
.nursing-sub li { margin: 6px 0; }

/* Teaching diagrams (HTML/SVG) */
.diagram {
  background: #f3faf9;
  border: 2px solid #0d7377;
  border-radius: 10px;
  padding: 14px 14px 8px;
  margin: 12px 0 8px;
  overflow: hidden;
}
.diagram .dtitle {
  color: #0d7377;
  font-weight: 700;
  font-size: 18px;
  margin: 0 0 10px;
}
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
  margin: 0 0 8px;
}
.step {
  background: #fff;
  border: 1px solid #b7d4d2;
  border-radius: 10px;
  padding: 12px 12px 10px;
  min-width: 0;
}
.step .num {
  display: inline-block;
  background: #0d7377;
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  border-radius: 999px;
  padding: 1px 10px;
  margin-bottom: 6px;
}
.step strong { color: #0d7377; }
.quads {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 8px;
  max-width: 560px;
  margin: 0 auto 8px;
}
.quad {
  background: #fff;
  border: 2px solid #0d7377;
  border-radius: 10px;
  padding: 12px 10px;
  text-align: center;
  min-width: 0;
}
.quad.hot { background: #fdecee; border-color: #9b2c3a; }
.quad.mark { background: #e8f4f3; }
.quad .en { display: block; font-size: 16px; color: #5a6f74; margin-top: 2px; }
.compare {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 10px;
  margin: 0 0 8px;
}
.compare .col {
  background: #fff;
  border: 2px solid #0d7377;
  border-radius: 10px;
  padding: 12px 14px;
  min-width: 0;
}
.compare .col.danger {
  border-color: #9b2c3a;
  background: #fdecee;
}
.compare .col h5 {
  margin: 0 0 8px;
  color: #0d7377;
  font-size: 18px;
}
.compare .col.danger h5 { color: #9b2c3a; }
.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 8px;
}
.pill {
  background: #fff;
  border: 2px solid #0d7377;
  border-radius: 999px;
  padding: 6px 14px;
  font-weight: 700;
  color: #0d7377;
}
.pill.warnp {
  border-color: #9b2c3a;
  color: #9b2c3a;
  background: #fdecee;
}
.note { font-size: 16px; color: #5a6f74; margin: 4px 0 8px; }

/* Hub */
.hub-intro, .topics, .hub-foot { padding: 22px 28px; }
.hub-intro { border-bottom: 1px solid #cce5e3; }
.topics h2 {
  font-size: 22px;
  color: #0d7377;
  margin: 22px 0 12px;
}
.topics h2:first-child { margin-top: 0; }
.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
  margin: 0 0 8px;
}
a.topic {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 2px solid #0d7377;
  border-radius: 12px;
  padding: 16px 18px;
  background: #f3faf9;
  min-width: 0;
}
a.topic:hover { background: #e8f4f3; }
a.topic h3 { font-size: 20px; color: #0d7377; margin-bottom: 8px; }
a.topic p { font-size: 17px; color: #1b3a40; margin: 0; }
a.topic .go { margin-top: 8px; font-size: 16px; font-weight: 700; color: #0d7377; }
.group-note { font-size: 17px; color: #1b3a40; margin: 0 0 12px; }
.hub-foot { font-size: 15px; color: #5a6f74; background: #f3faf9; }
.hub-foot p { margin: 8px 0; }

@media (max-width: 800px) {
  body { padding: 12px 10px 32px; }
  .sitenav, header.banner, .intro, .sec, .foot,
  .toc, .notice, .hub-intro, .topics, .hub-foot {
    padding-left: 16px;
    padding-right: 16px;
  }
  header.banner { padding-top: 16px; padding-bottom: 16px; }
  header.banner h1 { font-size: 24px; }
  header.banner p { font-size: 16px; }
  .sec h2, .topics h2 { font-size: 21px; }
  .quads { max-width: 100%; }
}
@media (max-width: 420px) {
  body { font-size: 18px; }
  .toc a { font-size: 15px; }
}


/* Bilingual ZH/EN pairs (中英對照) — additive classes only; monolingual pages unchanged */
.bi { margin: 0 0 12px; }
.bi > .zh { display: block; }
.bi > .en {
  display: block;
  font-size: 0.92em;
  color: #5a6f74;
  margin-top: 0.16em;
  line-height: 1.5;
}
li > .bi,
td > .bi,
th > .bi,
p.cap.bi,
p.credit.bi,
.dtitle.bi,
.foot .bi,
.nursing-sub li > .bi {
  margin-bottom: 0;
}
p.credit.bi > .en { font-size: 1em; }

/* Headings: stacked ZH over EN, not side-by-side columns */
.bi-h > .zh { display: block; }
.bi-h > .en {
  display: block;
  font-size: 0.82em;
  font-weight: 600;
  color: #5a6f74;
  margin-top: 0.18em;
  letter-spacing: 0;
  line-height: 1.4;
}
header.banner h1.bi-h > .en {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.68em;
  font-weight: 600;
}
header.banner p.bi { margin-top: 6px; }
header.banner p.bi > .en {
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.92em;
}
.warn h3.bi-h > .en { color: #9b2c3a; }
.nursing > h3.bi-h > .en,
.nursing-sub h4.bi-h > .en,
.dtitle.bi-h > .en,
.sec h2.bi-h > .en,
.sec h3.bi-h > .en {
  color: #5a6f74;
}
th .bi > .en,
th.bi-h > .en {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
  font-size: 0.9em;
}

@media (max-width: 800px) {
  /* Keep type readable; stack rather than squash */
  .bi > .en { font-size: 0.94em; }
  header.banner h1.bi-h > .en { font-size: 0.72em; }
}


/* Hub, notices, diagrams, pills — bilingual additions (safe for obstruction) */
.topics h2.bi-h > .en { color: #5a6f74; }
.hub-intro .bi:last-child { margin-bottom: 0; }
a.topic h3.bi-h { margin-bottom: 8px; }
a.topic h3.bi-h > .en { color: #5a6f74; font-size: 0.85em; }
a.topic p.bi { margin: 0; }
a.topic p.go.bi { margin-top: 8px; }
a.topic p.go.bi > .en {
  color: #0d7377;
  font-weight: 700;
  font-size: 0.9em;
}
.notice.bi { margin: 0; }
.notice.bi > .en { color: #6a3f00; font-size: 0.92em; }

.pill.bi-pill {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  border-radius: 12px;
  line-height: 1.35;
  white-space: normal;
  max-width: 100%;
}
.pill.bi-pill > .zh { display: block; }
.pill.bi-pill > .en {
  display: block;
  font-size: 0.85em;
  font-weight: 600;
  color: #5a6f74;
  margin-top: 0.1em;
}
.pill.warnp.bi-pill > .en { color: #9b2c3a; }

.step .bi { margin: 0; }
.compare .col h5.bi-h { margin: 0 0 8px; }
.compare .col h5.bi-h > .en { font-size: 0.85em; }
.compare .col.danger h5.bi-h > .en { color: #9b2c3a; }
.quad .bi { margin: 0; }
.quad .bi > .en { font-size: 16px; color: #5a6f74; }
.box > .bi:last-child,
.box .bi:last-child { margin-bottom: 0; }