:root {
  color-scheme: light;
  --paper: #f7f5ef;
  --surface: #fffefb;
  --ink: #14231f;
  --muted: #596762;
  --line: #ccd5d0;
  --teal: #0f7c72;
  --teal-dark: #095e57;
  --teal-soft: #e4f1ee;
  --warn: #8a4c12;
  --warn-soft: #fff2df;
  font-family: Inter, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--paper); }
body { margin: 0; min-width: 0; overflow-x: hidden; color: var(--ink); background: var(--paper); line-height: 1.6; }
button, input, select { font: inherit; color: inherit; }
button, input, select { min-height: 44px; }
a { color: var(--teal-dark); text-underline-offset: 0.18em; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 10; padding: 8px 12px; background: var(--ink); color: white; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

.site-header, main, footer { width: min(1180px, calc(100% - 64px)); margin-inline: auto; }
.site-header { display: flex; align-items: end; justify-content: space-between; gap: 36px; padding-block: 44px 26px; border-bottom: 1px solid var(--line); }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: clamp(1.7rem, 3vw, 2.45rem); letter-spacing: -0.035em; }
h2 { margin-bottom: 0; font-size: clamp(1.25rem, 2vw, 1.7rem); line-height: 1.35; letter-spacing: -0.02em; }
h3 { font-size: 1.15rem; line-height: 1.35; }
.eyebrow, .section-label { margin-bottom: 4px; color: var(--teal-dark); font-size: 0.78rem; font-weight: 750; letter-spacing: 0.1em; text-transform: uppercase; }

.mode-tabs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); min-width: 320px; border-bottom: 1px solid var(--line); }
.mode-tab { border: 0; border-bottom: 3px solid transparent; padding: 9px 14px; background: transparent; cursor: pointer; }
.mode-tab.is-active { border-bottom-color: var(--teal); color: var(--teal-dark); font-weight: 750; }
.mode-tab:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, a:focus-visible { outline: 3px solid rgba(15, 124, 114, 0.28); outline-offset: 2px; }

main { padding-block: 42px 64px; }
.intro { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr); align-items: end; gap: 48px; margin-bottom: 28px; }
.intro > p { margin-bottom: 0; color: var(--muted); }
.query-form { padding-block: 26px 32px; border-block: 1px solid var(--line); }
.query-grid { display: grid; grid-template-columns: 1.4fr repeat(3, minmax(150px, 0.7fr)); gap: 16px; }
label { display: grid; gap: 6px; min-width: 0; }
label > span { color: var(--muted); font-size: 0.88rem; font-weight: 650; }
input, select { width: 100%; min-width: 0; border: 1px solid #aebcb6; border-radius: 5px; padding: 9px 11px; background: var(--surface); }
input::placeholder { color: #89938f; }
.qualification-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 22px; }
fieldset { display: grid; align-content: start; gap: 13px; min-width: 0; margin: 0; border: 0; border-left: 2px solid var(--line); padding: 4px 0 4px 18px; }
legend { padding: 0; margin-bottom: 8px; font-weight: 800; }
.check-row { display: grid; grid-template-columns: 22px minmax(0, 1fr); align-items: start; gap: 9px; }
.check-row input { width: 20px; min-height: 20px; margin-top: 2px; accent-color: var(--teal); }
.check-row span { font-weight: 500; }
.primary-action { width: 100%; margin-top: 24px; border: 1px solid var(--teal); border-radius: 5px; padding: 10px 20px; background: var(--teal); color: white; font-weight: 780; cursor: pointer; }
.primary-action:hover { background: var(--teal-dark); }

.results-section { padding-top: 38px; }
.results-heading { display: flex; justify-content: space-between; align-items: end; gap: 28px; margin-bottom: 18px; }
.results-heading > p { margin-bottom: 0; color: var(--muted); text-align: right; }
.comparison-summary { margin-bottom: 18px; border-left: 4px solid var(--teal); padding: 14px 16px; background: var(--teal-soft); }
.comparison-summary.is-warning { border-left-color: var(--warn); background: var(--warn-soft); }
.comparison-summary strong { display: block; font-size: 1.08rem; }
.results-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.result-card { min-width: 0; border: 1px solid var(--line); border-top: 4px solid var(--line); padding: 18px; background: rgba(255, 254, 251, 0.62); }
.result-card.is-ranked { border-top-color: var(--teal); }
.result-head { display: flex; justify-content: space-between; gap: 14px; align-items: start; }
.result-head h3 { margin-bottom: 2px; }
.status { display: inline-flex; align-items: center; min-height: 28px; border: 1px solid var(--line); border-radius: 999px; padding: 2px 9px; color: var(--muted); font-size: 0.75rem; white-space: nowrap; }
.status.ok { border-color: var(--teal); color: var(--teal-dark); background: var(--teal-soft); }
.reward { margin: 18px 0; }
.reward strong { display: block; color: var(--teal-dark); font-size: clamp(1.75rem, 4vw, 2.5rem); line-height: 1; letter-spacing: -0.04em; }
.reward span { color: var(--muted); font-size: 0.84rem; }
.result-details { display: grid; grid-template-columns: minmax(88px, 0.34fr) minmax(0, 1fr); gap: 8px 12px; margin: 0; font-size: 0.88rem; }
.result-details dt { color: var(--muted); }
.result-details dd { min-width: 0; margin: 0; overflow-wrap: anywhere; }
.reason { margin: 16px 0 0; border-top: 1px solid var(--line); padding-top: 12px; color: var(--warn); font-size: 0.86rem; }
.result-policy { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 10px; font-size: 0.84rem; }
.result-policy summary { color: var(--teal-dark); font-weight: 700; cursor: pointer; }
.result-policy p { margin: 8px 0 0; color: var(--muted); }

.source-section { margin-top: 54px; padding-top: 28px; border-top: 1px solid var(--line); }
.source-section > p:not(.section-label) { max-width: 760px; color: var(--muted); }
.source-list { display: grid; gap: 8px; padding-left: 1.2rem; }
footer { padding-block: 22px 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.82rem; }
footer p { margin: 0; }

@media (max-width: 900px) {
  .site-header, main, footer { width: min(100% - 40px, 760px); }
  .site-header { align-items: start; }
  .mode-tabs { min-width: 280px; }
  .intro { grid-template-columns: 1fr; gap: 12px; }
  .query-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .qualification-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .qualification-grid fieldset:nth-child(3) { grid-column: 1 / -1; }
  .results-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .result-card:nth-child(3) { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  .site-header, main, footer { width: calc(100% - 40px); }
  .site-header { display: grid; gap: 22px; padding-block: 28px 20px; }
  .mode-tabs { width: 100%; min-width: 0; }
  main { padding-block: 30px 48px; }
  .query-grid, .qualification-grid, .results-grid { grid-template-columns: 1fr; }
  .qualification-grid fieldset:nth-child(3), .result-card:nth-child(3) { grid-column: auto; }
  fieldset { padding-left: 14px; }
  .results-heading { display: grid; gap: 8px; }
  .results-heading > p { text-align: left; }
  .result-details { grid-template-columns: 1fr; gap: 2px; }
  .result-details dd { margin-bottom: 8px; }
}

[hidden] { display: none !important; }