:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --ink: #1f2933;
  --ink-soft: #52606d;
  --line: #e4e9ee;
  --accent: #0e7c7b;
  --accent-soft: #e0f2f1;
  --high: #d64545;
  --high-bg: #fdecec;
  --mid: #e8930c;
  --mid-bg: #fdf3e1;
  --low: #7b8794;
  --low-bg: #f1f4f7;
  --redflag-bg: #fff5f5;
  --redflag-line: #f3c1c1;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

header.site {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding: 14px 20px 12px;
}
header.site h1 {
  margin: 0;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
header.site .disclaimer {
  margin: 6px 0 0;
  font-size: 0.78rem;
  color: var(--ink-soft);
  background: var(--accent-soft);
  border-radius: 8px;
  padding: 6px 10px;
  display: inline-block;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

/* ── 人體圖區 ── */
#chartArea {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px;
}
.finder { position: relative; margin-bottom: 10px; }
#findInput {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.92rem;
  background: var(--bg);
  color: var(--ink);
}
#findInput:focus { outline: none; border-color: var(--accent); background: #fff; }
.find-results {
  position: absolute;
  z-index: 20;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(31, 41, 51, 0.12);
  overflow: hidden;
  max-height: 320px;
  overflow-y: auto;
}
.find-item {
  display: block;
  width: 100%;
  text-align: left;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  padding: 10px 14px;
  font-size: 0.9rem;
  cursor: pointer;
}
.find-item:last-child { border-bottom: 0; }
.find-item:hover { background: var(--accent-soft); }
.find-empty { padding: 10px 14px; font-size: 0.85rem; color: var(--ink-soft); }

.view-toggle {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 8px;
}
.view-toggle button {
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 6px 18px;
  font-size: 0.9rem;
  cursor: pointer;
}
.view-toggle button.on {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.charts {
  display: flex;
  justify-content: center;
  gap: 8px;
}
.chart-wrap { flex: 1; max-width: 280px; }
.chart-wrap .chart-label {
  text-align: center;
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-top: 4px;
}
.chart-wrap svg { width: 100%; height: auto; display: block; }

/* 手機：單圖切換 */
@media (max-width: 899px) {
  #chartArea[data-mobile-view="front"] .chart-wrap.back { display: none; }
  #chartArea[data-mobile-view="back"] .chart-wrap.front { display: none; }
  .chart-wrap { max-width: 320px; margin: 0 auto; }
}
@media (min-width: 900px) {
  main { grid-template-columns: 460px 1fr; align-items: start; }
  #chartArea { position: sticky; top: 16px; }
  .view-toggle { display: none; }
}

/* ── 結果面板 ── */
#panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  min-height: 320px;
}
.idle { text-align: center; padding: 40px 12px; color: var(--ink-soft); }
.idle-icon { margin-bottom: 10px; color: var(--accent); }
.idle-icon .ic-locate { width: 46px; height: 46px; }
.idle h2 { color: var(--ink); margin: 0 0 8px; font-size: 1.1rem; }
.idle p { margin: 6px 0; font-size: 0.92rem; }
.idle-note { font-size: 0.8rem; opacity: 0.85; }

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.panel-head h2 { margin: 0; font-size: 1.2rem; }
.reset {
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 0.8rem;
  cursor: pointer;
}
.reset:hover { background: var(--line); }

/* 紅旗 */
.redflags {
  background: var(--redflag-bg);
  border: 1px solid var(--redflag-line);
  border-radius: 12px;
  padding: 10px 14px;
  margin-bottom: 14px;
}
.redflags summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.88rem;
  color: #a83232;
  display: flex;
  align-items: center;
  gap: 6px;
}
.ic-warn { width: 16px; height: 16px; flex: none; vertical-align: -3px; }
.redflags ul { margin: 8px 0 2px; padding-left: 20px; font-size: 0.86rem; color: #7c2d2d; }
.redflags li { margin: 3px 0; }

/* 問題 */
.question { margin-bottom: 14px; }
.q-text { font-weight: 600; font-size: 0.95rem; margin-bottom: 6px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink);
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.15s;
}
.chip:hover { border-color: var(--accent); }
.chip.on {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.q-redflag {
  margin-top: 6px;
  font-size: 0.76rem;
  color: #a83232;
  background: var(--redflag-bg);
  border-radius: 8px;
  padding: 4px 10px;
}

/* 結果 */
.results { margin-top: 18px; border-top: 1px dashed var(--line); padding-top: 14px; }
.results-title { font-weight: 700; font-size: 0.95rem; margin-bottom: 8px; }
.hint { color: var(--ink-soft); font-size: 0.85rem; margin: 4px 0 10px; }

/* 最可能摘要 */
.summary {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  border-radius: 12px;
  padding: 10px 14px;
  margin-bottom: 6px;
  border: 1px solid var(--line);
  background: var(--low-bg);
}
.summary.high { background: var(--high-bg); border-color: #f0b9b9; }
.summary.mid { background: var(--mid-bg); border-color: #f3d9a8; }
.summary-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
  background: var(--ink-soft);
  border-radius: 6px;
  padding: 2px 8px;
}
.summary.high .summary-label { background: var(--high); }
.summary.mid .summary-label { background: var(--mid); }
.summary-name { font-weight: 700; font-size: 1rem; flex: 1; }
.summary-hint { font-size: 0.8rem; color: var(--ink-soft); margin: 0 0 12px; }

/* 轉移痛跨區跳轉 */
.go-region {
  margin-top: 10px;
  border: 1px solid var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 8px;
  padding: 7px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}
.go-region:hover { background: var(--accent); color: #fff; }

.cond {
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 8px;
  overflow: hidden;
  background: var(--card);
}
.cond.high { border-color: #f0b9b9; }
.cond.mid { border-color: #f3d9a8; }
.cond-head {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  border: 0;
  background: transparent;
  padding: 11px 14px;
  font-size: 0.95rem;
  cursor: pointer;
  text-align: left;
  color: var(--ink);
}
.cond-name { flex: 1; font-weight: 600; }
.arrow { color: var(--ink-soft); }
.badge {
  font-size: 0.72rem;
  font-weight: 700;
  border-radius: 999px;
  padding: 3px 10px;
  white-space: nowrap;
}
.badge.high { background: var(--high-bg); color: var(--high); }
.badge.mid { background: var(--mid-bg); color: var(--mid); }
.badge.low { background: var(--low-bg); color: var(--low); }

.cond-body { padding: 0 14px 14px; }
.cond-muscles { font-size: 0.8rem; color: var(--ink-soft); margin: 0 0 6px; }
.cond-desc { font-size: 0.88rem; margin: 0 0 10px; }
.relief-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}
.relief-title.train { color: #5a4ea3; margin-top: 14px; }
.relief { margin: 0; padding-left: 20px; font-size: 0.86rem; }
.relief li { margin: 4px 0; }

/* 訓練：動作卡（可折疊） */
.train-plan {
  font-size: 0.84rem;
  color: var(--ink-soft);
  margin: 0 0 8px;
  padding: 6px 10px;
  background: #f3f1fb;
  border-radius: 8px;
}
.ex-list { display: flex; flex-direction: column; gap: 6px; }
.ex-card {
  border: 1px solid #e2def2;
  border-radius: 10px;
  overflow: hidden;
  background: #fbfaff;
}
.ex-card > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  font-size: 0.88rem;
}
.ex-card > summary::-webkit-details-marker { display: none; }
.ex-name { font-weight: 600; color: #4a3f8f; }
.ex-dose {
  margin-left: auto;
  font-size: 0.74rem;
  color: var(--ink-soft);
  text-align: right;
  max-width: 45%;
}
.ex-caret { color: #8a7fc7; transition: transform 0.15s; flex: none; }
.ex-card[open] > summary .ex-caret { transform: rotate(90deg); }
.ex-body {
  padding: 2px 12px 12px;
  border-top: 1px solid #ece8f7;
  font-size: 0.85rem;
}
.ex-goal { margin: 8px 0; color: var(--ink-soft); }
.ex-label {
  font-size: 0.76rem;
  font-weight: 700;
  color: #5a4ea3;
  margin-top: 6px;
}
.ex-steps { margin: 4px 0; padding-left: 20px; }
.ex-steps li { margin: 3px 0; }
.ex-line { margin: 6px 0 0; }
.ex-line.cue { color: #a83232; }
.ex-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
  background: #8a7fc7;
  border-radius: 5px;
  padding: 1px 7px;
  margin-right: 6px;
}
.ex-line.cue .ex-tag { background: var(--high); }
.train-note { font-size: 0.78rem; color: var(--ink-soft); margin: 10px 0 0; }

/* 自我檢測 */
.selftest {
  border: 1px solid #bcdcdc;
  background: #f0f9f9;
  border-radius: 10px;
  padding: 10px 12px;
  margin: 0 0 12px;
  font-size: 0.86rem;
}
.st-head { font-weight: 700; color: #0a6362; margin-bottom: 4px; font-size: 0.84rem; }
.st-how { margin: 0 0 6px; }
.st-pos, .st-caution { margin: 4px 0 0; }
.st-caution { color: #a83232; }
.st-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
  background: #0e7c7b;
  border-radius: 5px;
  padding: 1px 7px;
  margin-right: 6px;
}
.st-caution .st-tag { background: var(--high); }

/* 病程分期 */
.stage-note {
  font-size: 0.82rem;
  margin: 0 0 8px;
  padding: 7px 10px;
  border-radius: 8px;
  background: var(--low-bg);
  color: var(--ink-soft);
}
.stage-note.acute { background: var(--high-bg); color: #8f3434; }
.stage-note.chronic { background: var(--mid-bg); color: #8a5a08; }

/* 慢性分診提示 */
.triage {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  border: 1px solid #f3d9a8;
  background: var(--mid-bg);
  border-radius: 12px;
  padding: 10px 14px;
  margin-bottom: 10px;
  font-size: 0.86rem;
  color: #6e4c06;
}
.triage .ic-warn { margin-top: 3px; }

/* 就醫摘要按鈕 */
.export-btn {
  display: block;
  width: 100%;
  margin-top: 14px;
  border: 1px solid var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 10px;
  padding: 11px 14px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}
.export-btn:hover { background: var(--accent); color: #fff; }

/* 動作示意圖 */
.ex-art {
  margin: 8px 0 2px;
  background: #fff;
  border: 1px solid #ece8f7;
  border-radius: 8px;
  padding: 4px;
}
.exfig { display: block; width: 150px; max-width: 100%; height: auto; margin: 0 auto; }

/* 細部 SVG 鍵盤焦點 */
.foot-zone:focus { outline: none; }
.foot-zone:focus > * { stroke: var(--accent); stroke-width: 3; }

footer.site {
  max-width: 1100px;
  margin: 0 auto;
  padding: 8px 20px 32px;
  font-size: 0.75rem;
  color: var(--ink-soft);
}
footer.site a { color: var(--accent); }

/* ── 細部下鑽 ── */
.detail {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 14px;
  background: #fafcfc;
}
.detail-intro { font-size: 0.88rem; color: var(--ink-soft); margin-bottom: 10px; }
.detail-body { display: flex; gap: 14px; align-items: flex-start; }
.detail-svg { flex: none; width: 120px; }
.foot-map { width: 100%; height: auto; display: block; }
.foot-zone > * {
  fill: #d7e0e6;
  stroke: #b3c0c8;
  stroke-width: 1.5;
  cursor: pointer;
  transition: fill 0.12s;
}
.foot-zone:hover > * { fill: #bcd3d2; }
.foot-zone.on > * { fill: var(--accent); stroke: #0a5c5b; }
.sub-chips { display: flex; flex-wrap: wrap; gap: 7px; align-content: flex-start; flex: 1; }
.sub-chip {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.84rem;
  cursor: pointer;
  transition: all 0.12s;
}
.sub-chip:hover { border-color: var(--accent); }
.sub-chip.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.sub-chip.clear { color: var(--ink-soft); font-size: 0.8rem; }
@media (max-width: 420px) {
  .detail-svg { width: 96px; }
}