:root {
  --ink: #18272d;
  --muted: #586a70;
  --line: #d7dee0;
  --surface: #ffffff;
  --background: #f3f5f4;
  --nav: #102f36;
  --teal: #167b7e;
  --gold: #ba8d32;
  --plum: #79516a;
  --danger: #c4473d;
  --warning: #d18725;
  --success: #277553;
  --radius: 8px;
  font-family: "Noto Sans TC", "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: var(--background);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--background); }
body { font-size: 14px; line-height: 1.45; }
h1, h2, p { margin: 0; letter-spacing: 0; }
h1 { font-size: 18px; font-weight: 650; }
h2 { font-size: 16px; font-weight: 650; }

.topbar {
  height: 76px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 14px; min-width: 0; }
.brand p { color: var(--muted); font-size: 12px; margin-top: 2px; }
.brand-mark {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 7px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--nav);
  font-weight: 700;
}
.locale-field, .select-field { display: flex; align-items: center; gap: 9px; color: var(--muted); white-space: nowrap; }
select {
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  padding: 0 10px;
  font: inherit;
}
.workspace { display: grid; grid-template-columns: 234px 1fr; min-height: calc(100vh - 76px); }
.sidebar { background: var(--nav); color: #e7efee; padding: 22px 14px; display: flex; flex-direction: column; gap: 28px; }
.view-nav { display: grid; gap: 6px; }
.view-nav button {
  display: block;
  width: 100%;
  min-height: 44px;
  padding: 9px 12px;
  text-align: left;
  border: 0;
  border-radius: 6px;
  color: #dce5e4;
  background: transparent;
  font: inherit;
  cursor: pointer;
}
.view-nav button.active { color: #fff; background: #25505a; font-weight: 600; }
.notice { font-size: 12px; color: #d0dbda; border: 1px solid #345a60; border-radius: var(--radius); padding: 12px; }
.stage { min-width: 0; padding: 22px 26px 34px; display: grid; gap: 18px; }
.metrics { display: grid; grid-template-columns: repeat(5, minmax(128px, 1fr)); gap: 12px; }
.metric {
  min-height: 92px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.metric-label { color: var(--muted); font-size: 12px; }
.metric-value { font-size: 26px; font-weight: 650; }
.metric.alert .metric-value { color: var(--danger); }
.view { display: grid; gap: 16px; }
.section-title { display: grid; gap: 4px; margin-top: 4px; }
.section-title p, .privacy, .caption { color: var(--muted); font-size: 12px; }
.control-line { grid-template-columns: 1fr auto; align-items: center; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.chart-panel { display: grid; gap: 12px; overflow: hidden; }
.chart-legend { display: flex; flex-wrap: wrap; gap: 14px; color: var(--muted); font-size: 12px; }
.legend-entry { display: flex; align-items: center; gap: 6px; }
.legend-swatch { display: inline-block; width: 18px; height: 3px; border-radius: 3px; }
canvas { display: block; width: 100%; height: auto; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 640px; }
th { color: var(--muted); font-size: 12px; font-weight: 600; text-align: left; padding: 0 10px 10px 0; }
td { border-top: 1px solid #edf0f1; padding: 11px 10px 11px 0; vertical-align: top; }
.warning-chip { display: inline-flex; margin: 2px 5px 2px 0; padding: 3px 8px; border-radius: 999px; color: var(--danger); background: #fcf0ee; font-size: 12px; }
.scenario-controls { display: grid; grid-template-columns: repeat(3, minmax(200px, 1fr)); gap: 22px; align-items: center; }
.scenario-controls label:not(.select-field) { display: grid; grid-template-columns: 1fr auto; gap: 8px; color: var(--muted); }
.scenario-controls input { grid-column: 1 / -1; width: 100%; accent-color: var(--teal); }
.scenario-controls output { color: var(--ink); font-weight: 600; }
.scenario-metrics { grid-template-columns: repeat(4, minmax(140px, 1fr)); }
.comparison { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.scenario-column { display: grid; gap: 12px; }
.scenario-column h3 { font-size: 13px; color: var(--muted); margin: 0; letter-spacing: 0; }
.bar { display: grid; gap: 6px; }
.bar-label { display: flex; justify-content: space-between; font-size: 12px; }
.bar-track { height: 9px; border-radius: 5px; background: #edf0f1; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 5px; background: var(--teal); }
.alert-panel { max-width: 720px; display: grid; gap: 16px; }
button.primary { height: 42px; border: 0; border-radius: 6px; padding: 0 16px; background: var(--danger); color: #fff; font: inherit; font-weight: 600; cursor: pointer; justify-self: start; }
.alert-result { border: 1px solid #efc2be; border-radius: 6px; padding: 14px; background: #fff3f1; color: #7e2922; }

@media (max-width: 980px) {
  .workspace { display: block; }
  .sidebar { padding: 12px; gap: 14px; }
  .view-nav { grid-template-columns: repeat(5, minmax(120px, 1fr)); overflow-x: auto; }
  .notice { display: none; }
  .metrics { grid-template-columns: repeat(2, minmax(132px, 1fr)); }
  .scenario-controls, .comparison { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .topbar { height: auto; display: grid; padding: 14px; }
  .stage { padding: 14px; }
  .metrics, .scenario-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric-value { font-size: 22px; }
  .control-line { display: grid; grid-template-columns: 1fr; gap: 12px; }
}