:root {
  --bg: #f1f5f8;
  --paper: #fff;
  --ink: #20334b;
  --muted: #53657b;
  --line: #e7edf3;
  --accent: #2164c4;
  --red: #bb3546;
  --green: #167052;
  --metric: #2164c4;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
button,
input {
  font: inherit;
  min-height: 44px;
}
button,
a,
input {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
}
button:disabled {
  cursor: wait;
  opacity: 0.5;
}
a {
  color: inherit;
  text-decoration: none;
}
button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 3px solid #73a9f3;
  outline-offset: 3px;
}
button {
  color: inherit;
}
button,
input {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 6px;
}
button:hover {
  background: #f3f7fb;
}
input {
  color: var(--ink);
  padding: 7px 9px;
  min-width: 0;
}
input[type="checkbox"] {
  accent-color: var(--accent);
  width: 20px;
  height: 20px;
  margin: 0;
  min-height: 20px;
  flex-shrink: 0;
}
h1,
h2,
p {
  margin: 0;
}
.app-shell {
  max-width: 1480px;
  margin: auto;
  padding: 0 40px;
}
.topbar {
  height: 92px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid #dce5ee;
  gap: 48px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.125rem;
  font-weight: 700;
  white-space: nowrap;
}
.brand small {
  display: block;
  font-size: 0.875rem;
  letter-spacing: 1px;
  color: var(--muted);
  margin-top: 5px;
  font-weight: 500;
}
.brand-mark {
  background: var(--accent);
  border-radius: 10px;
  width: 39px;
  height: 39px;
  display: grid;
  place-items: center;
}
.brand-mark svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: #fff;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.topbar nav {
  display: flex;
  align-self: stretch;
  gap: 30px;
}
.topbar nav a {
  display: flex;
  align-items: center;
  color: var(--muted);
  position: relative;
  font-weight: 600;
}
.topbar nav a.active {
  color: var(--accent);
}
.topbar nav a.active:after {
  position: absolute;
  content: "";
  height: 3px;
  background: var(--accent);
  bottom: -1px;
  left: 0;
  right: 0;
}
.source-label {
  margin-left: auto;
  font-size: 1rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 7px;
}
.source-label i {
  width: 6px;
  height: 6px;
  background: #568ca1;
  border-radius: 50%;
}
.page-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 38px 0 27px;
  gap: 20px;
}
.eyebrow {
  font-size: 0.875rem;
  letter-spacing: 1px;
  color: var(--muted);
  font-weight: 600;
}
.page-heading h1 {
  font-size: 2.125rem;
  font-weight: 650;
  letter-spacing: 1px;
  margin: 10px 0;
  line-height: 1.35;
}
.subtitle {
  font-size: 1rem;
  color: var(--muted);
}
.update-block {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 7px;
  font-size: 0.9375rem;
  color: var(--muted);
}
.update-block strong {
  font-family: Consolas, monospace;
  font-weight: 500;
  font-size: 1rem;
  color: var(--ink);
}
.update-block button {
  background: transparent;
  border: 0;
  padding: 3px 0;
  color: var(--accent);
  font-size: 1rem;
}
.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.metric-card {
  display: block;
  text-align: left;
  padding: 22px;
  border: 1px solid #e3eaf2;
  border-radius: 10px;
  position: relative;
  overflow: hidden;
  transition:
    border-color 0.18s,
    box-shadow 0.18s;
  min-width: 0;
}
.metric-card:hover {
  background: #fff;
  border-color: #a3c2e9;
}
.metric-card.selected {
  border-color: var(--metric);
  box-shadow:
    0 0 0 1px var(--metric),
    0 5px 18px #2164c40a;
}
.metric-card.selected:before {
  position: absolute;
  content: "";
  width: 36px;
  height: 3px;
  background: var(--metric);
  top: 0;
  left: 20px;
}
.metric-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.0625rem;
  gap: 6px;
  white-space: normal;
  flex-wrap: wrap;
  row-gap: 8px;
}
.metric-heading b {
  font-weight: 700;
  margin-right: 5px;
  font-size: 1.0625rem;
}
.metric-tag {
  font-size: 0.875rem;
  color: var(--muted);
  background: #f2f5f9;
  padding: 4px 6px;
  border-radius: 4px;
}
.metric-reading {
  display: flex;
  align-items: baseline;
  gap: 4px 12px;
  margin: 16px 0 0;
  flex-wrap: wrap;
}
.metric-reading strong {
  font-family: Consolas, "Courier New", monospace;
  font-size: 2.5rem;
  letter-spacing: -1px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.change {
  font-family: Consolas, monospace;
  font-size: 0.9375rem;
  color: var(--muted);
}
.up {
  color: var(--red) !important;
}
.down {
  color: var(--green) !important;
}
.sparkline {
  display: block;
  height: 37px;
  margin: 9px 0;
}
.sparkline svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}
.metric-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
  color: var(--muted);
  gap: 6px 12px;
  flex-wrap: wrap;
}
.select-hint {
  color: var(--accent);
  opacity: 1;
}
.metric-card.selected .select-hint,
.metric-card:hover .select-hint {
  opacity: 1;
}
.card-caption {
  text-align: left;
  font-size: 0.875rem;
  color: var(--muted);
  margin: 14px 0 24px;
}
.chart-panel {
  background: var(--paper);
  border: 1px solid #e3eaf2;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 5px 22px #28436004;
}
.chart-heading {
  padding: 24px 28px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.chart-heading h2 {
  font-size: 1.5rem;
  font-weight: 650;
  margin-top: 7px;
}
.chart-style {
  display: flex;
  background: #f4f7fa;
  padding: 3px;
  border-radius: 7px;
  border: 1px solid var(--line);
  flex-shrink: 0;
}
.chart-style button {
  font-size: 1rem;
  background: transparent;
  border: 0;
  padding: 6px 14px;
}
.chart-style button.active {
  background: #fff;
  box-shadow: 0 1px 4px #20334b14;
  color: var(--accent);
}
.chart-toolbar {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 12px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.range-buttons {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
}
.range-buttons button {
  font-size: 1rem;
  border: 0;
  padding: 8px 13px;
  background: transparent;
  color: var(--muted);
  white-space: nowrap;
}
.range-buttons button.active {
  color: var(--accent);
  background: #edf4ff;
  font-weight: 600;
}
#date-form {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.9375rem;
  color: var(--muted);
}
#date-form input {
  width: 168px;
  background: #fbfcfe;
  padding: 8px 10px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 1rem;
}
#date-form button {
  padding: 7px 12px;
  font-size: 1rem;
}
.date-error {
  color: var(--red);
  padding: 10px 28px 0;
  font-size: 1rem;
}
.summary-row {
  padding: 24px 28px 8px;
  display: flex;
  align-items: center;
  gap: 20px 32px;
  min-height: 88px;
  flex-wrap: wrap;
}
.main-reading {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}
.main-reading > span {
  color: var(--muted);
  font-size: 0.9375rem;
}
.main-reading strong {
  font-family: Consolas, monospace;
  font-size: 2.125rem;
  letter-spacing: -0.7px;
}
.main-reading small {
  font-family: Consolas, "Microsoft YaHei", monospace;
  font-size: 0.9375rem;
  color: var(--muted);
}
.summary-row dl {
  display: flex;
  gap: 30px;
  margin: 0;
  padding-left: 28px;
  border-left: 1px solid var(--line);
}
dt {
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 7px;
}
dd {
  font-family: Consolas, monospace;
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  white-space: nowrap;
}
.period-caption {
  margin-left: auto;
  text-align: right;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--muted);
  max-width: 290px;
  white-space: pre-line;
}
.chart-wrap {
  height: 460px;
  position: relative;
  margin: 0 14px;
}
#trend-chart {
  height: 100%;
  width: 100%;
}
.chart-state {
  position: absolute;
  inset: 0;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  text-align: center;
  padding: 24px;
  color: var(--ink);
}
.chart-state[hidden] {
  display: none;
}
.state-icon {
  font-size: 2.875rem;
  color: #8babcc;
  font-weight: 300;
}
.chart-state strong {
  font-size: 1.125rem;
  font-weight: 600;
}
.chart-state p {
  font-size: 1rem;
  color: var(--muted);
  max-width: 400px;
  line-height: 1.8;
}
.chart-state button {
  padding: 8px 20px;
  color: var(--accent);
}
.chart-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 28px 16px;
  gap: 10px;
  flex-wrap: wrap;
}
.chart-toggles {
  display: flex;
  gap: 12px 24px;
  font-size: 1rem;
  color: #53657b;
  flex-wrap: wrap;
}
.chart-toggles label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  min-height: 44px;
}
.risk-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red);
}
.text-button {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 5px;
  font-size: 0.9375rem;
}
.chart-help {
  border-top: 1px solid var(--line);
  padding: 12px 28px;
  display: flex;
  justify-content: space-between;
  gap: 8px 24px;
  background: #fbfcfe;
  color: #53657b;
  font-size: 0.875rem;
  flex-wrap: wrap;
}
.reading-note {
  position: fixed;
  z-index: 50;
  width: min(420px, calc(100vw - 32px));
  max-height: calc(100dvh - 32px);
  overflow-y: auto;
  overscroll-behavior: contain;
  background: #fff;
  border: 1px solid #dce6f0;
  border-top: 3px solid var(--metric);
  border-radius: 12px;
  padding: 20px 26px 26px;
  box-shadow:
    0 16px 48px #20334b26,
    0 3px 10px #20334b0a;
}
.reading-note[hidden] {
  display: none;
}
.reading-note:focus-visible {
  outline: 2px solid var(--metric);
  outline-offset: 3px;
}
.note-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
#close-signal {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: #f2f6fa;
  color: #64748b;
  font-size: 1.625rem;
  line-height: 1;
}
#close-signal:hover {
  background: #e5edf5;
}
.note-index {
  font-family: Consolas, monospace;
  font-size: 0.875rem;
  color: #53657b;
  letter-spacing: 0.5px;
  font-weight: 600;
}
.reading-note h2 {
  margin: 14px 0;
  font-size: 1.25rem;
  font-weight: 600;
}
.reading-note p {
  font-size: 1rem;
  line-height: 1.8;
  color: #53657b;
}
.threshold-note {
  border-top: 1px solid #d6e2ee;
  border-bottom: 1px solid #d6e2ee;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 17px 0;
  margin: 20px 0;
}
.threshold-note span {
  font-size: 0.875rem;
  color: #53657b;
}
.threshold-note strong {
  font-family: Consolas, monospace;
  font-size: 1.75rem;
  color: var(--metric);
  font-weight: 500;
}
.reading-note .note-small {
  font-size: 0.875rem;
  margin-top: 14px;
  line-height: 1.8;
}
footer {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  color: #53657b;
  font-size: 0.875rem;
  padding: 28px 0 32px;
  flex-wrap: wrap;
}
.footer-divider {
  margin: 0 9px;
  color: #b9c5d1;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 1150px) {
  .app-shell {
    padding: 0 28px;
  }
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .topbar {
    gap: 32px;
  }
  .source-label {
    display: none;
  }
  .period-caption {
    flex-basis: 100%;
    max-width: none;
    text-align: left;
    margin: 0;
  }
}
@media (max-width: 850px) {
  .page-heading {
    flex-direction: column;
    align-items: stretch;
    gap: 20px;
  }
  .update-block {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 2px 16px;
  }
  .update-block strong {
    grid-column: 1;
  }
  .update-block button {
    grid-column: 2;
    grid-row: 1 / 3;
    padding: 8px 12px;
    border: 1px solid #d6e2ef;
    border-radius: 8px;
    background: #fff;
  }
  .metric-tag {
    display: none;
  }
  .summary-row dl {
    margin: 0;
    padding: 0;
    border: 0;
    flex: 1;
    justify-content: space-between;
  }
  .chart-help {
    flex-direction: column;
  }
}
@media (max-width: 600px) {
  .app-shell {
    padding: 0 16px;
  }
  .topbar {
    height: auto;
    min-height: 92px;
    flex-wrap: wrap;
    gap: 4px 24px;
    padding: 18px 0 0;
  }
  .brand {
    width: 100%;
    font-size: 1.125rem;
  }
  .brand small {
    display: none;
  }
  .brand-mark {
    width: 34px;
    height: 34px;
  }
  .topbar nav {
    width: 100%;
    gap: 28px;
  }
  .topbar nav a {
    min-height: 52px;
    font-size: 1rem;
  }
  .page-heading {
    padding: 28px 0 24px;
  }
  .page-heading h1 {
    font-size: 1.75rem;
    letter-spacing: 0;
  }
  .update-block {
    font-size: 0.875rem;
    gap: 2px 8px;
  }
  .update-block strong {
    font-size: 0.9375rem;
  }
  .update-block button {
    font-size: 0.9375rem;
    padding: 8px;
  }
  .metric-grid {
    gap: 12px;
  }
  .metric-card {
    padding: 16px 12px;
  }
  .metric-heading {
    font-size: 1rem;
  }
  .metric-heading b {
    display: block;
    font-size: 1rem;
    margin: 0 0 2px;
  }
  .metric-reading {
    display: block;
    margin-top: 10px;
  }
  .metric-reading strong {
    font-size: 2.125rem;
    letter-spacing: -1px;
  }
  .metric-reading .change {
    display: block;
    font-size: 0.9375rem;
    margin: 2px 0 0;
  }
  .sparkline {
    height: 32px;
    margin: 12px 0;
  }
  .metric-foot {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .chart-heading {
    padding: 20px 16px;
  }
  .chart-heading h2 {
    font-size: 1.375rem;
  }
  .chart-heading .eyebrow {
    overflow-wrap: anywhere;
  }
  .chart-toolbar {
    padding: 14px 16px;
    gap: 16px;
  }
  .range-buttons {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    width: 100%;
    gap: 4px;
  }
  .range-buttons button {
    padding: 8px 2px;
    font-size: 0.9375rem;
  }
  #date-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    width: 100%;
    gap: 10px;
  }
  #date-form > span {
    display: none;
  }
  #date-form input {
    width: 100%;
    min-width: 0;
    font-size: 1rem;
    padding: 8px;
  }
  #start-date {
    grid-column: 1;
    grid-row: 1;
  }
  #end-date {
    grid-column: 1;
    grid-row: 2;
  }
  #date-form button {
    grid-column: 2;
    grid-row: 1 / 3;
    padding: 12px;
    align-self: stretch;
  }
  .summary-row {
    padding: 20px 16px 8px;
    gap: 18px;
  }
  .main-reading {
    width: 100%;
    gap: 6px 12px;
  }
  .main-reading strong {
    font-size: 2rem;
  }
  .summary-row dl {
    width: 100%;
    flex-basis: 100%;
    gap: 12px;
  }
  dt {
    font-size: 0.875rem;
  }
  dd {
    font-size: 1.0625rem;
  }
  .period-caption {
    font-size: 0.875rem;
  }
  .chart-wrap {
    margin: 0 4px;
    height: 400px;
  }
  .chart-bottom {
    padding: 12px 16px;
    gap: 8px;
    align-items: flex-start;
  }
  .chart-toggles {
    gap: 0;
    flex-direction: column;
  }
  .text-button {
    font-size: 0.9375rem;
  }
  .chart-help {
    padding: 14px 16px;
    font-size: 0.875rem;
  }
  .reading-note {
    padding: 16px 20px 22px;
    border-radius: 16px;
  }
  .reading-note h2 {
    margin: 12px 0;
  }
  .note-header {
    position: sticky;
    top: -16px;
    background: #fff;
    padding: 6px 0;
  }
  .threshold-note {
    padding: 14px 0;
    margin: 18px 0;
  }
  footer {
    flex-direction: column;
    gap: 6px;
    padding: 24px 0;
  }
  .date-error {
    padding: 10px 16px 0;
  }
}
@media (max-width: 360px) {
  .app-shell {
    padding: 0 12px;
  }
  .page-heading h1 {
    font-size: 1.625rem;
  }
  .metric-grid {
    gap: 10px;
  }
  .metric-card {
    padding: 14px 10px;
  }
  .metric-reading strong {
    font-size: 1.875rem;
  }
  .range-buttons {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }
  .chart-bottom {
    flex-direction: column;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}