:root {
  color-scheme: light;
  --ink: #1f2a32;
  --muted: #65737e;
  --line: #d7dde2;
  --line-strong: #c5d0d7;
  --paper: #f7f9f9;
  --panel: #ffffff;
  --teal: #0f766e;
  --steel: #344b5a;
  --amber: #b7791f;
  --red: #b23b3b;
  --green: #16794c;
  --focus: #2563eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
}

.shell {
  width: min(1480px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 40px;
}

.masthead {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0 18px;
  border-bottom: 2px solid var(--ink);
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--teal);
  font: 700 12px/1.2 Consolas, "SFMono-Regular", monospace;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(30px, 5vw, 56px);
  line-height: 0.95;
  font-weight: 800;
}

h2 {
  font-size: 16px;
  font-weight: 750;
}

.meta-line {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  margin: 0 8px 2px;
  border-radius: 50%;
  background: var(--amber);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.button,
.actions a {
  min-height: 36px;
  border: 1px solid var(--ink);
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  padding: 8px 12px;
  font: 700 13px/1 "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  text-decoration: none;
  cursor: pointer;
}

.button-secondary {
  background: var(--panel) !important;
  color: var(--ink) !important;
}

.button:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--focus), transparent 65%);
  outline-offset: 2px;
}

.quality-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  margin: 16px 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.quality-item {
  background: var(--panel);
  padding: 12px 14px;
}

.quality-label {
  color: var(--muted);
  font-size: 12px;
}

.quality-value {
  display: block;
  margin-top: 4px;
  font: 750 18px/1.1 Consolas, "SFMono-Regular", monospace;
}

.workspace {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 16px;
}

.control-panel,
.panel,
.footnote {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.control-panel {
  position: sticky;
  top: 14px;
  align-self: start;
  padding: 16px;
}

.control-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.mini-actions {
  display: flex;
  gap: 6px;
}

.text-button {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--steel);
  padding: 5px 8px;
  font: 700 12px/1 "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  cursor: pointer;
}

.field {
  display: grid;
  gap: 6px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 12px;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  padding: 8px 9px;
  font-size: 14px;
}

.index-choices {
  display: grid;
  gap: 6px;
  max-height: 245px;
  overflow: auto;
  padding-right: 2px;
}

.check-card {
  display: grid;
  grid-template-columns: 18px 1fr;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  padding: 7px 9px;
  cursor: pointer;
}

.check-card:has(input:checked) {
  border-color: color-mix(in srgb, var(--teal), var(--line) 40%);
  background: #f0f8f7;
}

.check-card input {
  width: 16px;
  height: 16px;
  margin: 0;
  accent-color: var(--teal);
}

.check-card strong {
  display: block;
  font-size: 13px;
  line-height: 1.2;
}

.check-card small {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font: 11px/1 Consolas, "SFMono-Regular", monospace;
}

.date-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.quick-ranges,
.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 12px;
}

.segmented {
  grid-template-columns: repeat(3, 1fr);
}

.quick-ranges button,
.segmented button {
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--steel);
  padding: 8px 6px;
  font: 700 13px/1 "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  cursor: pointer;
}

.quick-ranges button.is-active,
.segmented button.is-active {
  border-color: var(--teal);
  background: var(--teal);
  color: #fff;
}

.content {
  display: grid;
  gap: 16px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.metric-card {
  min-height: 150px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  padding: 14px;
}

.metric-title {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 12px;
}

.metric-close {
  margin-top: 10px;
  font: 780 28px/1 Consolas, "SFMono-Regular", monospace;
}

.metric-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 12px;
  margin-top: 14px;
  font-size: 12px;
}

.metric-list span {
  color: var(--muted);
}

.positive {
  color: var(--green);
}

.negative {
  color: var(--red);
}

.panel {
  padding: 14px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 12px;
}

.chart-panel canvas,
.echarts-host {
  width: 100%;
  height: 360px;
}

.echarts-host:empty {
  display: none;
}

canvas {
  display: block;
}

.table-wrap {
  overflow: auto;
  max-height: 460px;
  border: 1px solid var(--line);
  border-radius: 6px;
  position: relative;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  min-width: 980px;
  font-size: 13px;
}

thead {
  position: sticky;
  top: 0;
  z-index: 5;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 9px 10px;
  text-align: right;
  white-space: nowrap;
}

th {
  background: #eef3f4;
  color: var(--steel);
  font-size: 12px;
  z-index: 5;
}

th.index-head {
  text-align: center;
}

th.index-head small {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font: 11px/1 Consolas, "SFMono-Regular", monospace;
}

th.date-head,
td.date-cell {
  text-align: left;
  border-right: 1px solid var(--line-strong);
}

.group-start {
  border-left: 1px solid var(--line-strong);
}

.group-end {
  border-right: 1px solid var(--line-strong);
}

.sort-button {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--steel);
  padding: 3px 4px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.sort-button:hover {
  background: #dde8ea;
}

.sort-button span {
  color: var(--teal);
  font: 800 13px/1 Consolas, "SFMono-Regular", monospace;
}

.footnote {
  padding: 14px 16px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

@media (max-width: 980px) {
  .masthead,
  .workspace {
    grid-template-columns: 1fr;
    display: grid;
  }

  .actions {
    justify-content: flex-start;
  }

  .control-panel {
    position: static;
  }

  .quality-strip,
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(100vw - 18px, 1480px);
    padding-top: 14px;
  }

  .quality-strip,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .date-grid,
  .segmented {
    grid-template-columns: 1fr;
  }
}