:root {
  color-scheme: light;
  --ink: #202827;
  --muted: #64716f;
  --line: #d6dedb;
  --surface: #ffffff;
  --green: #087557;
  --green-soft: #e7f3ee;
  --blue: #1e63ad;
  --red: #bd3145;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { min-height: 100%; background: #f3f6f5; }
body {
  margin: 0 auto; padding: 0 32px 40px; max-width: 1360px; color: var(--ink);
  font: 15px/1.55 "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  letter-spacing: 0;
}
.visually-hidden {
  position: absolute !important; width: 1px !important; height: 1px !important;
  padding: 0 !important; margin: -1px !important; overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important;
}
button, input, select { font: inherit; }
button, select, input[type="number"] {
  height: 40px; border: 1px solid var(--line); border-radius: 6px;
  background: #fff; color: var(--ink); padding: 6px 10px;
}
button {
  display: inline-flex; justify-content: center; align-items: center; gap: 7px;
  cursor: pointer; white-space: nowrap;
}
button:hover:not(:disabled) { background: #eaf0ef; border-color: #a6b7b2; }
button:disabled { opacity: .4; cursor: default; }
button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 2px solid var(--blue); outline-offset: 3px;
}
button img { width: 18px; height: 18px; flex-shrink: 0; }
button.primary { color: #fff; background: var(--green); border-color: var(--green); }
button.primary:hover:not(:disabled) { background: #056147; }
button.primary img { filter: invert(1); }
.icon-button { width: 40px; padding: 9px; flex-shrink: 0; }
input[type="checkbox"] { accent-color: var(--green); width: 15px; height: 15px; margin: 0; }
.app-header { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; }
h1 { font-size: 22px; font-weight: 650; margin: 0; }
.brand-icon { width: 26px; height: 26px; }
.workspace-label { color: var(--muted); font-size: 12px; }
.input-bar {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 16px;
  border-block: 1px solid var(--line); padding: 16px 0; background: transparent;
}
.upload-controls { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; min-width: 0; }
.game-settings { display: flex; flex-wrap: wrap; align-items: end; gap: 10px; }
.game-settings label { display: grid; gap: 4px; font-size: 12px; color: var(--muted); min-width: 0; }
.game-settings select { width: 120px; font-size: 13px; }
.game-settings input { width: 84px; font-size: 13px; }
.game-settings input[readonly] { background: #eef1f1; color: #5c6769; }
.upload-status { min-height: 24px; padding-top: 4px; overflow-wrap: anywhere; }
.demo-mode .input-bar { display: none; }
.demo-mode .upload-status { padding: 10px 0; border-block: 1px solid var(--line); color: var(--green); }
.demo-mode .controls { display: none; }
.demo-mode .board-footer { justify-content: flex-end; }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(370px, 460px); gap: 32px; align-items: start; }
.board-column { min-width: 0; width: 100%; max-width: min(760px, max(500px, calc(100dvh - 280px))); margin: 0 auto; }
.board-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; min-height: 36px; flex-wrap: wrap; }
.display-options { display: flex; gap: 14px; align-items: center; font-size: 12px; color: var(--muted); }
.display-options label { display: flex; gap: 5px; align-items: center; cursor: pointer; }
.board-meta { padding: 8px 0 12px; min-height: 70px; }
.review-meta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 13px; }
.review-badge { font-weight: 650; }
.focus-loss { color: var(--red); font-weight: 650; }
.board-legend { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 10px; color: var(--muted); font-size: 12px; }
.board-legend > span { display: inline-flex; align-items: center; gap: 6px; }
.board-legend i { display: inline-flex; align-items: center; justify-content: center; width: 14px; height: 14px; font-size: 10px; color: #fff; font-style: normal; font-weight: 700; }
.legend-played { background: var(--red); border-radius: 2px; }
.legend-actual { background: #505b60; border-radius: 2px; }
.board-legend .legend-best { width: 0; height: 0; border-inline: 8px solid transparent; border-bottom: 14px solid var(--green); }
.legend-candidate { border-radius: 50%; background: var(--blue); }
#board { width: 100%; aspect-ratio: 1; position: relative; background: #e7c990; overflow: hidden; border: 1px solid #c5a970; border-radius: 7px; box-shadow: 0 8px 22px #26383218; }
#board canvas { display: block; width: 100%; height: 100%; touch-action: manipulation; }
.point-summary { min-height: 34px; padding: 7px 0; font-size: 12px; color: var(--muted); overflow-wrap: anywhere; }
.board-footer { display: flex; justify-content: space-between; gap: 12px; align-items: center; flex-wrap: wrap; padding: 10px 0; border-top: 1px solid var(--line); }
.controls, .review-nav { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.move-counter { font-size: 12px; min-width: 62px; text-align: center; font-variant-numeric: tabular-nums; color: var(--muted); }
.meta { font-size: 12px; color: var(--muted); }
.panel { min-width: 0; padding-left: 28px; border-left: 1px solid var(--line); position: sticky; top: 16px; }
.panel-heading { display: flex; justify-content: space-between; align-items: center; min-height: 36px; }
.panel-heading h2 { margin: 0; font-size: 19px; }
.engine-label { color: var(--green); font-size: 12px; }
.view-switch { display: flex; border-bottom: 1px solid var(--line); margin: 8px 0 12px; gap: 14px; }
.view-switch button { border: 0; border-bottom: 2px solid transparent; border-radius: 0; padding: 8px 2px; background: transparent; color: var(--muted); flex: 1; }
.view-switch button.active { color: var(--green); border-bottom-color: var(--green); font-weight: 600; }
.empty-state { padding: 72px 12px; text-align: center; color: var(--muted); }
.analysis-section { border-top: 1px solid var(--line); margin-top: 16px; padding-top: 14px; overflow-wrap: anywhere; }
.analysis-section:first-child { border: 0; margin-top: 0; padding-top: 0; }
.analysis-section h2 { font-size: 17px; margin: 0 0 8px; }
.analysis-section h3 { font-size: 15px; margin: 0 0 8px; }
.analysis-section p { margin: 6px 0; }
.analysis-section strong { display: block; margin-bottom: 3px; }
.analysis-section ul { margin: 6px 0; padding-left: 18px; }
.analysis-section ul:has(.review-item-button) { list-style: none; padding: 0; display: grid; gap: 8px; }
.report-status { font-weight: 600; }
.report-overview > p:not(.report-status), .report-overview details, .quality-notes { font-size: 13px; color: var(--muted); }
.quality-notes { color: #86601c; }
.review-item-button { display: block; width: 100%; height: auto; min-height: 72px; padding: 11px 12px; text-align: left; white-space: normal; line-height: 1.55; font-size: 13px; border-radius: 6px; }
.review-item-button strong { font-size: 14px; }
.review-item-button.active { background: #fff1f1; border-color: #cd6470; box-shadow: inset 3px 0 var(--red); }
.review-item-meta { display: block; color: var(--muted); margin-top: 4px; }
.candidate-choice-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; }
.candidate-choice-button { display: block; height: auto; min-height: 96px; padding: 10px; text-align: left; white-space: normal; }
.candidate-choice-rank { display: block; color: var(--blue); font-size: 12px; margin-bottom: 3px; }
.candidate-choice-button[data-candidate-rank="1"] .candidate-choice-rank { color: var(--green); }
.candidate-choice-button strong { font-size: 17px; }
.candidate-choice-button.active { border-color: var(--blue); background: #edf4fd; }
.candidate-choice-button[data-candidate-rank="1"].active { border-color: var(--green); background: #edf7f3; }
.candidate-choice-meta { display: block; font-size: 12px; color: var(--muted); }
.candidate-detail-panel { padding: 12px 0 0; font-size: 13px; color: var(--muted); }
.candidate-detail-title, .section-title-row { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.candidate-detail-title strong, .section-title-row h3 { margin: 0; }
.section-title-row { margin-bottom: 10px; justify-content: space-between; }
.candidate-rank-badge { color: var(--ink); }
.mistake-markers { display: flex; flex-wrap: wrap; gap: 6px; }
.mistake-marker { height: 36px; padding: 6px 9px; font-size: 12px; color: var(--red); border-color: #e6b7bb; }
.mistake-marker.unavailable { border-style: dashed; color: var(--muted); }
.winrate-indicator { display: inline-flex; gap: 5px; align-items: center; font-size: 11px; color: var(--muted); }
.winrate-indicator-dot { width: 9px; height: 9px; border: 1px solid #525b5c; border-radius: 50%; }
.winrate-indicator-dot.black { background: #222; }
.winrate-indicator-dot.white { background: #fff; }
.chart-controls { display: flex; gap: 6px; margin-bottom: 8px; }
.chart-controls button { font-size: 12px; height: 36px; }
.chart-controls button.active { color: var(--green); border-color: var(--green); }
.trend-chart svg { display: block; width: 100%; height: auto; }
.chart-meta, .chart-note, .section-note { font-size: 12px; color: var(--muted); margin-top: 6px; }
.loading-state { display: flex; align-items: center; gap: 10px; padding: 48px 0; }
.loading-spinner { width: 18px; height: 18px; border: 2px solid var(--line); border-top-color: var(--green); border-radius: 50%; animation: spin .8s linear infinite; flex-shrink: 0; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .loading-spinner { animation: none; } }
.error-message { color: var(--red); overflow-wrap: anywhere; }
.input-preview, .job-panel { padding: 14px 0; border-bottom: 1px solid var(--line); }
.input-preview h3 { font-size: 15px; margin: 0 0 12px; }
.input-preview dl { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 8px 12px; margin: 0; }
.input-preview dt { color: var(--muted); }
.input-preview dd { margin: 0; overflow-wrap: anywhere; }
.preview-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.player-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 14px; }
.player-fields label { display: grid; gap: 4px; font-size: 12px; color: var(--muted); }
.player-fields input { min-width: 0; width: 100%; height: 34px; padding: 6px; border: 1px solid var(--line); border-radius: 4px; }
.job-panel progress { width: 100%; height: 8px; accent-color: var(--green); margin-top: 12px; }
.job-panel .preview-actions:has(> [hidden]:first-child):has(> [hidden]:last-child) { display: none; }
#jobStatus { overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
details { margin-top: 10px; }
summary { cursor: pointer; color: var(--muted); font-size: 12px; }
[data-chart-move] { cursor: pointer; }
.raw-data { border-top: 1px solid var(--line); padding-top: 12px; margin-top: 18px; }
pre { white-space: pre-wrap; overflow-wrap: anywhere; font-size: 11px; }
@media (min-width: 901px) { .panel { max-height: calc(100vh - 32px); overflow: auto; padding-right: 12px; scrollbar-gutter: stable; } }
@media (max-width: 1100px) { .input-bar { align-items: center; } .upload-controls { max-width: 340px; } }
@media (max-width: 900px) {
  body { padding: 0 18px 28px; }
  .layout { grid-template-columns: 1fr; gap: 24px; }
  .board-column { margin: 0 auto; width: 100%; max-width: 660px; }
  .panel { padding: 20px 0 0; border-left: 0; border-top: 1px solid var(--line); position: static; }
  .upload-controls { max-width: none; }
}
@media (max-width: 480px) {
  body { padding-inline: 12px; }
  .app-header { min-height: 62px; }
  h1 { font-size: 20px; }
  .workspace-label { font-size: 11px; }
  .input-bar { gap: 10px; padding-block: 10px; }
  .upload-controls { flex: 1; }
  #uploadAnalyzeBtn { width: 100%; min-height: 44px; }
  .game-settings { width: 100%; gap: 8px; }
  .game-settings select { width: 112px; }
  .game-settings input { width: 72px; }
  .board-toolbar { gap: 6px; }
  .display-options { gap: 8px; }
  .board-meta { min-height: 84px; }
  .review-meta { gap: 6px; font-size: 12px; }
  .board-legend { gap: 14px; }
  .board-footer { gap: 8px; }
  .controls, .review-nav { gap: 4px; }
  button, select, input[type="number"] { min-height: 44px; }
  .controls .primary { font-size: 12px; padding-inline: 8px; }
  .icon-button { width: 44px; padding: 11px; }
  .move-counter { min-width: 48px; }
  .candidate-choice-list { grid-template-columns: 1fr; }
  .candidate-choice-button { min-height: 72px; }
  .view-switch button { min-height: 44px; }
}