.lab-directory-title { padding-top: 62px; border-bottom: 0; margin-bottom: 14px; }
.lab-directory-title h1 { font-size: clamp(32px, 4vw, 44px); font-weight: 500; letter-spacing: -.05em; }
.lab-title-dot { color: #b3a366; }
.experiment-card { display: grid; grid-template-columns: 1.1fr 1fr; overflow: hidden; border: 1px solid var(--line); border-radius: 6px; transition: border-color .2s; }
.experiment-card:hover { border-color: #a3b096; }
.experiment-card + .experiment-card { margin-top: 24px; }
.experiment-art { display: flex; align-items: center; position: relative; background: #f2f4ee; min-width: 0; }
.experiment-art svg { display: block; width: 100%; }
.experiment-number { position: absolute; top: 23px; left: 25px; color: #78856e; font-size: 11px; letter-spacing: .14em; }
.experiment-intro { padding: 38px; }
.experiment-intro .eyebrow { margin-bottom: 12px; }
.experiment-intro h2 { font-size: 27px; margin-bottom: 7px; font-weight: 500; }
.experiment-intro > p { color: var(--muted); font-size: 14px; }
.experiment-intro .experiment-en { font-size: 13px; margin-bottom: 24px; }
.experiment-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.experiment-tags span { padding: 3px 9px; background: var(--paper); border: 1px solid var(--line); border-radius: 3px; color: var(--green); font-size: 11px; }
.experiment-enter { display: flex; justify-content: space-between; margin-top: 32px; color: var(--green); font-size: 14px; }
.experiment-enter > span { font-size: 22px; line-height: 1; }
.lab-more { margin: 30px 0 0; color: var(--muted); font-size: 13px; }
.lab-breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; padding-top: 27px; color: #84887f; font-size: 12px; }
.lab-breadcrumb a { color: var(--green); }
.lab-breadcrumb a:hover { text-decoration: underline; text-underline-offset: 3px; }
.lab-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; margin: 24px 0 28px; }
.lab-heading h1 { margin-bottom: 8px; font-size: clamp(26px, 3.2vw, 36px); font-weight: 500; letter-spacing: -.03em; }
.lab-heading p { margin: 0; font-size: 13px; color: var(--muted); }
.lab-heading p span { margin-inline: 7px; color: #b5b8ae; }
.lab-model-tag { flex-shrink: 0; color: var(--green); padding: 5px 10px; background: var(--green-soft); border-radius: 3px; font-size: 11px; }
.lab-workspace { display: grid; grid-template-columns: 278px minmax(0, 1fr); gap: 20px; align-items: start; }
.lab-stage-panel { min-width: 0; border: 1px solid #dfe3d9; border-radius: 5px; overflow: hidden; }
.lab-stage-heading { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; padding: 13px 20px; border-bottom: 1px solid #e6e9e0; background: #fafbf7; font-size: 12px; color: var(--muted); }
.motion-state { font-size: 11px; color: var(--green); }
.motion-state[data-phase="flight"], .motion-state[data-phase="impact"] { color: #996038; }
.motion-state[data-phase="buffer"] { color: #996038; }
.motion-state[data-phase="stopped"] { color: #4d6041; }
.lab-scene { display: block; width: 100%; height: 378px; background: #fafbf8; }
.scene-label { font: 11px -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif; fill: #727c69; }
.scene-label.strong { fill: #4d6041; font-weight: 500; }
.scene-label.orange { fill: #aa6b40; }
.scene-label.halo { paint-order: stroke; stroke: #fafbf8; stroke-width: 5px; stroke-linejoin: round; }
.lab-legend { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px 18px; padding: 6px 14px 15px; background: #fafbf8; font-size: 10px; color: #737d69; }
.lab-legend > span { display: inline-flex; align-items: center; gap: 7px; }
.legend-line { display: inline-block; width: 17px; height: 0; border-top: 2px solid #637b53; }
.legend-line.flight { border-color: #b57446; }
.legend-line.prediction { border-color: #a0aa95; border-top-style: dashed; }
.lab-readouts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); padding: 15px 6px; border-block: 1px solid var(--line); }
.lab-readouts > div { display: grid; justify-items: center; padding-inline: 6px; border-right: 1px solid var(--line); }
.lab-readouts > div:last-child { border: 0; }
.lab-readouts span { color: var(--muted); font-size: 10px; }
.lab-readouts output { font-size: 18px; font-variant-numeric: tabular-nums; }
.lab-readouts small { font-size: 10px; color: var(--muted); }
.lab-playback { padding: 16px 19px 11px; }
.playback-buttons { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.playback-buttons .button { padding: 7px 12px; min-height: 36px; font-size: 12px; }
.playback-buttons .primary { min-width: 84px; background: #5d704f; border-color: #5d704f; }
.playback-buttons .primary:hover { background: #465d38; }
.playback-rate { margin-left: auto; display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 11px; }
.playback-rate select { padding: 5px 3px; background: white; border: 1px solid #e1e3dc; border-radius: 3px; font-size: 11px; min-height: 34px; }
.timeline-row { display: flex; align-items: center; gap: 12px; margin-top: 12px; }
.timeline-row input { flex: 1; min-width: 0; }
.timeline-row span { width: 98px; text-align: right; flex-shrink: 0; color: #797e73; font-size: 10px; font-variant-numeric: tabular-nums; }
.lab-controls { border: 1px solid var(--line); border-radius: 5px; padding: 21px; }
.controls-heading h2 { margin-bottom: 5px; font-size: 16px; font-weight: 500; }
.controls-heading p { color: var(--muted); font-size: 11px; margin-bottom: 21px; }
.parameter { margin-bottom: 21px; }
.parameter-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.parameter-top > label { font-size: 12px; white-space: nowrap; }
.parameter-top i { color: #808873; margin-left: 5px; }
.number-unit { display: flex; align-items: center; border: 1px solid #dce0d4; border-radius: 3px; background: #fafbf8; padding: 2px 7px; }
.number-unit input { width: 53px; min-width: 0; border: 0; padding: 2px 0; color: #4b6040; background: transparent; text-align: right; font-size: 14px; font-variant-numeric: tabular-nums; -moz-appearance: textfield; }
.number-unit input::-webkit-inner-spin-button, .number-unit input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
.number-unit input:focus-visible { outline-offset: 2px; }
.number-unit span { font-size: 10px; color: #7b836f; margin-left: 7px; }
.lab-main input[type="range"] { display: block; width: 100%; accent-color: #748565; height: 22px; margin: 0; cursor: pointer; }
.range-labels { display: flex; justify-content: space-between; font-size: 10px; color: #8b9084; }
.parameter p { margin: 3px 0 0; font-size: 10px; color: #7c8274; }
.lab-presets { border-top: 1px solid var(--line); padding-top: 16px; }
.lab-presets h3 { color: var(--muted); font-size: 11px; margin-bottom: 10px; font-weight: 400; }
.preset-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.preset-grid button { min-height: 34px; padding: 5px 7px; border: 1px solid #dfe3d7; border-radius: 3px; background: #fafbf8; font-size: 11px; }
.preset-grid button:hover, .preset-grid button[aria-pressed="true"] { background: #edf1e7; border-color: #a5b396; color: #435c35; }
.lab-options { display: grid; gap: 6px; margin-top: 17px; font-size: 11px; color: #6d7564; }
.lab-options label { display: flex; align-items: center; gap: 7px; cursor: pointer; }
.lab-options input { width: 14px; height: 14px; margin: 0; accent-color: #6e825e; }
.lab-results { margin-top: 30px; }
.results-heading { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 13px; }
.results-heading h2 { margin: 0; font-size: 16px; font-weight: 500; }
.results-heading > span { color: #737b68; font-size: 12px; font-variant-numeric: tabular-nums; }
.result-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.result-card { padding: 17px 18px; border: 1px solid #e3e6dc; border-radius: 4px; background: #fafbf8; }
.result-card h3 { font-size: 11px; margin-bottom: 8px; color: #666f5d; font-weight: 400; letter-spacing: 0; }
.result-card output { display: block; color: #435837; font-size: 28px; line-height: 1.3; font-weight: 500; font-variant-numeric: tabular-nums; }
.result-card output small { font-size: 12px; font-weight: 400; margin-left: 3px; }
.result-card p { font-size: 10px; color: #818777; margin: 9px 0 0; }
.lab-outcome { padding: 14px 17px; border-left: 3px solid #c5b676; background: #f8f5eb; font-size: 13px; margin: 15px 0 8px; color: #695c37; }
.lab-endpoint { font-size: 11px; color: var(--muted); margin: 0 0 24px; }
.lab-explanation { margin-top: 28px; padding: 19px 22px; border: 1px solid var(--line); background: white; }
.lab-explanation summary { font-size: 13px; }
.explanation-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; padding-top: 26px; }
.explanation-grid h3 { font-size: 13px; font-weight: 500; margin-bottom: 13px; }
.explanation-grid p { color: var(--muted); font-size: 12px; }
.explanation-grid .lab-formula { background: #f4f6f0; color: #4c6040; padding: 13px; font-family: Georgia, "Times New Roman", serif; font-size: 15px; line-height: 1.9; border-radius: 3px; }
.model-assumptions { margin: 7px 0 14px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 11px; color: #767d6e; }
.model-sources { margin: 0; font-size: 11px; color: #767d6e; }
.model-sources a { text-decoration: underline; text-underline-offset: 3px; }
.lab-notice { background: var(--yellow-soft); padding: 16px; border: 1px solid #d8c893; border-radius: 4px; }
@media (max-width: 1050px) {
  .lab-workspace { grid-template-columns: 247px minmax(0, 1fr); gap: 14px; }
  .lab-controls { padding: 17px; }
  .playback-buttons { flex-wrap: wrap; }
  .playback-rate { font-size: 0; }
  .result-card { padding-inline: 13px; }
}
@media (max-width: 850px) {
  .lab-workspace { grid-template-columns: minmax(0, 1fr); }
  .lab-controls { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 25px; }
  .controls-heading { grid-column: 1 / -1; }
  .parameter-top { flex-wrap: wrap; }
  .lab-presets { grid-column: 1 / 3; }
  .lab-options { margin-top: 17px; align-content: end; }
  .playback-rate { font-size: 11px; }
  .lab-scene { height: 375px; }
}
@media (max-width: 650px) {
  .experiment-card { grid-template-columns: 1fr; }
  .experiment-art { max-height: 300px; }
  .experiment-intro { padding: 25px; }
  .lab-heading { align-items: flex-start; flex-direction: column; gap: 12px; margin-bottom: 20px; }
  .lab-model-tag { font-size: 10px; }
  .lab-controls { grid-template-columns: 1fr; }
  .parameter-top { flex-wrap: nowrap; }
  .lab-presets, .controls-heading { grid-column: auto; }
  .lab-options { margin-top: 17px; }
  .parameter { margin-bottom: 16px; }
  .lab-scene { height: 330px; }
  .lab-stage-heading { padding: 12px 14px; }
  .lab-legend { gap: 6px 12px; font-size: 9px; }
  .lab-readouts { padding: 12px 2px; }
  .lab-readouts span { font-size: 9px; }
  .lab-readouts output { font-size: 15px; }
  .lab-readouts small { font-size: 9px; }
  .lab-playback { padding: 13px 11px 9px; }
  .playback-buttons { gap: 6px; }
  .playback-buttons .button { padding-inline: 9px; min-height: 38px; font-size: 11px; }
  .playback-buttons .primary { min-width: 72px; }
  .playback-rate { font-size: 0; }
  .result-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .result-card { padding: 16px 13px; }
  .result-card output { font-size: 25px; }
  .result-card h3 { font-size: 10px; }
  .result-card p { font-size: 9px; }
  .results-heading h2 { font-size: 14px; }
  .results-heading > span { font-size: 10px; }
  .explanation-grid { grid-template-columns: 1fr; gap: 12px; }
  .lab-outcome { font-size: 12px; }
  .lab-explanation { padding-inline: 17px; }
  .number-unit input { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) { .experiment-card { transition: none; } }
.lab-topic-index { display: flex; flex-wrap: wrap; gap: 8px; margin: -8px 0 30px; }
.lab-topic-index a { border: 1px solid #dbe1d2; border-radius: 18px; padding: 6px 12px; font-size: 12px; color: #647755; background: #fafbf6; }
.lab-topic-index a:hover { background: #eaf0e2; }