:root {
  --paper: #f6f6f0;
  --surface: #fffefa;
  --ink: #202925;
  --muted: #737b74;
  --line: #dde1d8;
  --green: #345b47;
  --green-hover: #274b39;
  --green-light: #ecf1e9;
  --accent: #cd613b;
  --error: #914329;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { min-width: 320px; }
body { margin: 0; line-height: 1.65; }
button, input, select { font: inherit; }
button, a, input, select { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
button:disabled { cursor: default; }
a { color: inherit; text-decoration: none; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible { outline: 3px solid #b5ccbc; outline-offset: 4px; }
[hidden] { display: none !important; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-weight: 600; }
fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
.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; }
.site-shell { width: min(1140px, calc(100% - 88px)); margin: 0 auto; }
.site-header { min-height: 112px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; gap: 13px; align-items: center; font-size: 15px; font-weight: 600; line-height: 1.4; letter-spacing: .035em; }
.brand-symbol { display: grid; place-items: center; font-size: 25px; font-family: "Songti SC", "SimSun", serif; border: 1px solid var(--ink); width: 45px; height: 45px; border-radius: 50%; }
.brand-subtitle { display: block; font-size: 10px; font-weight: 400; color: var(--muted); letter-spacing: .17em; margin-top: 4px; }
.header-end { display: flex; align-items: center; gap: 28px; font-size: 12px; }
.study-label, .quiet-link { color: var(--muted); }
.quiet-link:hover, .text-button:hover { color: var(--green); }
.test-badge { border: 1px solid #dab696; color: #9a5a26; border-radius: 5px; padding: 3px 8px; background: #fff4e7; }
.site-footer { border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 15px; padding: 25px 0 30px; font-size: 11px; color: var(--muted); margin-top: 70px; }
.eyebrow { font-size: 11px; color: var(--muted); letter-spacing: .13em; line-height: 1.6; }
.tiny-dot { display: inline-block; width: 5px; height: 5px; background: var(--accent); margin-right: 8px; vertical-align: 2px; border-radius: 50%; }
.hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; min-height: 402px; padding: 54px 0 48px; }
.hero h1 { font-size: clamp(37px, 4.2vw, 53px); letter-spacing: -.04em; line-height: 1.32; margin: 18px 0 21px; }
.hero h1 span { color: var(--green); }
.hero-description { color: #60695f; font-size: 15px; line-height: 1.9; }
.hero-note { margin-top: 22px; font-size: 11px; color: var(--muted); letter-spacing: .05em; }
.hero-art { position: relative; display: flex; flex-direction: column; align-items: center; align-self: stretch; background: #eeefe7; border-radius: 7px; min-height: 284px; }
.art-caption { position: absolute; top: 21px; font-size: 10px; letter-spacing: .13em; color: #879080; }
.specimen { font-family: "Songti SC", "SimSun", serif; font-size: 169px; font-weight: 400; line-height: 1; margin: 68px 0 29px; color: #252b25; }
.art-rule { display: flex; justify-content: space-between; width: calc(100% - 48px); padding: 10px 0 16px; font-size: 10px; color: #838a7e; border-top: 1px solid #d9ddcf; }
.two-methods { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); display: flex; gap: 48px; align-items: center; padding: 27px 0; }
.two-methods > div { display: flex; align-items: flex-start; gap: 16px; flex: 1; }
.step-index { font-size: 12px; color: var(--accent); font-variant-numeric: tabular-nums; line-height: 1.8; }
.two-methods h2 { font-size: 15px; margin-bottom: 3px; }
.two-methods p { font-size: 12px; color: var(--muted); }
.two-methods .methods-note { font-size: 10px; border-left: 1px solid var(--line); padding-left: 30px; white-space: nowrap; }
.setup-panel { max-width: 830px; margin: 47px auto 0; }
.suite-choice { margin-bottom: 27px; }
.suite-choice > label { font-size: 13px; font-weight: 500; }
.suite-choice select { max-width: 450px; }
.suite-choice > p { margin-top: 10px; line-height: 1.8; }
.section-heading { display: flex; justify-content: space-between; gap: 20px; align-items: flex-end; margin-bottom: 20px; }
.section-heading h2 { font-size: 21px; margin-top: 6px; }
.subtle { font-size: 12px; color: var(--muted); }
.profile-options { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
.profile-option { position: relative; display: block; cursor: pointer; }
.profile-option input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.profile-card { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: 7px; padding: 17px 19px; min-height: 126px; transition: border-color .15s, background .15s; }
.profile-card-top { display: flex; justify-content: space-between; align-items: center; font-size: 14px; font-weight: 600; }
.radio-indicator { width: 16px; height: 16px; border: 1px solid #bfc7ba; border-radius: 50%; padding: 3px; }
.profile-option input:checked + .profile-card { border-color: var(--green); background: var(--green-light); }
.profile-option input:checked + .profile-card .radio-indicator { border-color: var(--green); background: var(--green); box-shadow: inset 0 0 0 3px var(--green-light); }
.profile-option input:focus-visible + .profile-card { outline: 3px solid #b5ccbc; outline-offset: 4px; }
.profile-count { font-size: 12px; color: #606b60; margin-top: 8px; }
.profile-description { font-size: 10px; color: var(--muted); margin-top: 3px; }
.participant-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 26px; }
.participant-fields label { font-size: 12px; }
.optional { font-size: 10px; color: var(--muted); font-weight: 400; margin-left: 7px; }
select { width: 100%; display: block; border: 1px solid var(--line); border-radius: 5px; padding: 10px 12px; background: var(--surface); color: var(--ink); font-size: 12px; margin-top: 9px; }
.consent-info { display: flex; gap: 13px; padding: 23px 0 19px; margin-top: 11px; font-size: 11px; color: var(--muted); border-bottom: 1px solid var(--line); }
.info-icon { flex: 0 0 17px; display: flex; justify-content: center; align-items: center; border: 1px solid #adb7a6; border-radius: 50%; height: 17px; margin-top: 3px; font-family: serif; font-size: 11px; }
.consent-info p + p { margin-top: 5px; }
details { margin-top: 7px; }
summary { color: var(--green); cursor: pointer; font-size: 11px; }
details p { margin-top: 8px; max-width: 680px; }
.consent-check { display: inline-flex; align-items: center; gap: 10px; font-size: 12px; margin-top: 19px; cursor: pointer; }
input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--green); margin: 0; }
.start-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 22px; }
.button { border: 1px solid #cbd4c6; border-radius: 5px; min-height: 45px; padding: 10px 23px; display: inline-flex; justify-content: center; align-items: center; gap: 22px; color: var(--green); background: transparent; font-size: 13px; font-weight: 500; transition: background .15s, opacity .15s; }
.button:hover { background: var(--green-light); }
.button.primary { background: var(--green); border-color: var(--green); color: #fff; }
.button.primary:hover { background: var(--green-hover); }
.button:disabled { opacity: .4; }
.button.small { font-size: 11px; min-height: 35px; padding: 7px 15px; }
.text-button { border: 0; background: transparent; padding: 0; font-size: 11px; color: var(--muted); text-decoration: underline; text-decoration-color: #bdc6b7; text-underline-offset: 4px; }
.error-message { margin-top: 15px; background: #fff0e9; border: 1px solid #e9c9b9; border-radius: 5px; padding: 11px 13px; color: var(--error); font-size: 12px; line-height: 1.7; }
.centered-view { min-height: 60vh; padding: 100px 20px 20px; display: flex; flex-direction: column; align-items: center; text-align: center; }
.centered-view h1 { font-size: 31px; line-height: 1.5; margin: 13px 0 19px; }
.centered-view .button { margin-top: 26px; }
.centered-view .text-button { margin-top: 19px; }
.centered-actions { display: flex; gap: 14px; }
.done-description { color: var(--muted); font-size: 14px; line-height: 2; }
.done-symbol { width: 52px; height: 52px; display: grid; place-items: center; color: var(--green); background: #e8efe2; border: 1px solid #cbdac1; border-radius: 50%; font-size: 23px; margin-bottom: 23px; }
.done-view .subtle { margin-top: 15px; }
.loading-wheel { display: inline-block; width: 23px; height: 23px; border: 2px solid #d9e1d4; border-top-color: var(--green); border-radius: 50%; animation: rotate .8s linear infinite; }
@keyframes rotate { to { transform: rotate(360deg); } }
.intro-view { padding: 56px 0 12px; text-align: center; }
.intro-card { max-width: 650px; margin: 0 auto; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 42px 45px; }
.intro-card h1 { font-size: 27px; margin: 21px 0 15px; }
.intro-description { font-size: 15px; line-height: 1.95; color: #596457; max-width: 450px; margin: 0 auto; }
.intro-notes { margin: 24px auto 28px; font-size: 11px; color: var(--muted); line-height: 2; }
.intro-view .exit-button { margin-top: 25px; }
.task-illustration { width: 94px; height: 94px; margin: 25px auto 0; position: relative; font-family: "Songti SC", "SimSun", serif; font-size: 68px; line-height: 1.35; color: #29302a; }
.task-illustration.place-icon { font-size: 61px; }
.task-illustration.place-icon:before, .task-illustration.place-icon:after { content: ""; position: absolute; background: #bdc7b5; pointer-events: none; z-index: -1; }
.task-illustration.place-icon:before { height: 1px; width: 70%; left: 15%; top: 50%; }
.task-illustration.place-icon:after { width: 1px; height: 70%; top: 15%; left: 50%; }
.task-illustration.context-icon { font-family: inherit; font-size: 20px; width: 170px; height: auto; letter-spacing: .3em; line-height: 1.7; }
.task-illustration.mark-icon:after { content: ""; position: absolute; width: 8px; height: 8px; background: var(--accent); border: 2px solid var(--surface); box-shadow: 0 0 0 1px var(--accent); border-radius: 50%; left: 41px; top: 44px; }
.experiment-view { padding: 38px 0 0; }
.experiment-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 28px; }
.experiment-heading h1 { font-size: 24px; margin-top: 8px; line-height: 1.55; }
.progress-info { text-align: right; min-width: 129px; flex: 0 0 129px; font-size: 11px; color: var(--muted); }
.progress-info strong { margin-left: 10px; font-weight: 500; color: var(--ink); font-variant-numeric: tabular-nums; }
.progress-track { margin-top: 12px; height: 3px; width: 129px; background: #e0e5da; border-radius: 2px; overflow: hidden; }
.progress-track > div { background: var(--green); height: 100%; transition: width .3s; }
.experiment-layout { display: grid; grid-template-columns: minmax(0, 1fr) 270px; gap: 38px; align-items: start; }
.stage-column { min-width: 0; }
.stage-surround { display: flex; align-items: center; justify-content: center; padding: 0; min-width: 0; }
.stage { width: min(100%, 490px); aspect-ratio: 1; flex: 0 1 490px; position: relative; background: transparent; overflow: visible; touch-action: none; user-select: none; -webkit-user-select: none; cursor: crosshair; border: 0; padding: 0; outline: none; }
.stage:focus-visible { outline: none; }
.stage.context-stage { flex: 0 0 auto; aspect-ratio: auto; max-width: none; }
.stage.place-stage { cursor: grab; }
.stage.dragging { cursor: grabbing; }
.glyph-image { width: 100%; height: 100%; display: block; position: absolute; top: 0; left: 0; pointer-events: none; user-select: none; -webkit-user-drag: none; object-fit: fill; }
.reference-crosshair { position: absolute; width: var(--crosshair-size, 50px); height: var(--crosshair-size, 50px); transform: translate(-50%, -50%); pointer-events: none; z-index: 2; }
.reference-crosshair span { position: absolute; display: block; background: rgba(84, 124, 91, .72); }
.reference-crosshair span:first-child { width: 100%; height: 1px; top: 50%; left: 0; }
.reference-crosshair span:last-child { height: 100%; width: 1px; left: 50%; top: 0; }
.context-glyphs { position: absolute; inset: 0; pointer-events: none; }
.context-glyph-image { position: absolute; display: block; pointer-events: none; user-select: none; -webkit-user-drag: none; }
.context-target-note { color: #596457; font-size: 12px; text-align: center; margin: 0 0 22px; line-height: 1.9; }
.context-target-note strong { color: var(--ink); font-weight: 600; }
.center-marker { position: absolute; width: 18px; height: 18px; margin-left: -9px; margin-top: -9px; border-radius: 50%; border: 1px solid var(--accent); box-shadow: 0 0 0 2px rgba(246,246,240,.7); background: rgba(246,246,240,.13); pointer-events: none; z-index: 3; }
.center-marker > span { position: absolute; width: 4px; height: 4px; background: var(--accent); border: 1px solid #fff; border-radius: 50%; top: 6px; left: 6px; }
.stage-loading { position: absolute; inset: 0; background: var(--paper); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 13px; font-size: 12px; color: var(--muted); z-index: 5; }
.stage-hint { text-align: center; color: var(--muted); font-size: 11px; margin-top: 15px; }
.direction-controls { display: grid; grid-template-columns: repeat(3, 44px); grid-template-rows: repeat(3, 44px); gap: 5px; width: max-content; margin: 15px auto 0; }
.direction-button { display: grid; place-items: center; width: 44px; height: 44px; background: transparent; color: var(--green); font-size: 21px; border: 1px solid #ccd5c5; border-radius: 6px; padding: 0; touch-action: manipulation; }
.direction-button:hover { background: var(--green-light); }
.direction-button:disabled { opacity: .35; }
.up-button { grid-column: 2; grid-row: 1; }
.left-button { grid-column: 1; grid-row: 2; }
.right-button { grid-column: 3; grid-row: 2; }
.down-button { grid-column: 2; grid-row: 3; }
.direction-label { grid-column: 2; grid-row: 2; font-size: 10px; color: var(--muted); display: grid; place-items: center; }
.image-error { text-align: center; color: var(--error); font-size: 12px; margin-top: 12px; }
.image-error .button { margin-top: 10px; }
.answer-panel { padding-top: 10px; }
.task-label { display: flex; gap: 11px; font-size: 13px; font-weight: 600; }
.task-label > span:first-child { font-size: 11px; color: var(--accent); font-weight: 400; padding-top: 2px; }
.task-instruction { font-size: 13px; line-height: 1.9; color: #63705f; margin-top: 14px; }
.answer-state { display: flex; gap: 8px; align-items: center; font-size: 11px; color: var(--muted); margin-top: 23px; }
.answer-dot { width: 6px; height: 6px; background: #c2cbb9; border-radius: 50%; }
.answer-dot.answered { background: var(--green); }
.position-button { width: 100%; font-size: 12px; margin-top: 16px; padding-left: 10px; padding-right: 10px; min-height: 40px; }
.reset-button { margin-top: 11px; }
.reset-button:disabled { opacity: .4; }
.panel-rule { margin: 26px 0 21px; border-top: 1px solid var(--line); }
.confidence-fieldset legend { font-size: 11px; margin-bottom: 12px; }
.confidence-options { display: grid; grid-template-columns: repeat(5, 1fr); gap: 7px; }
.confidence-options label { display: block; cursor: pointer; position: relative; }
.confidence-options input { position: absolute; opacity: 0; }
.confidence-options span { display: grid; place-items: center; height: 34px; border: 1px solid #d5ddcf; border-radius: 4px; background: var(--surface); font-size: 12px; color: #74816d; }
.confidence-options input:checked + span { color: var(--green); background: var(--green-light); border-color: var(--green); font-weight: 600; }
.confidence-options input:focus-visible + span { outline: 3px solid #b5ccbc; outline-offset: 3px; }
.confidence-caption { display: flex; justify-content: space-between; font-size: 9px; color: var(--muted); margin-top: 7px; }
.confidence-clear { font-size: 10px; margin-top: 9px; }
.submit-button { width: 100%; margin-top: 28px; }
.keyboard-hint { color: var(--muted); font-size: 10px; line-height: 1.8; margin-top: 13px; }
.experiment-bottom { display: flex; justify-content: space-between; align-items: center; gap: 20px; font-size: 11px; color: var(--muted); margin-top: 27px; }
.research-main { padding-top: 45px; }
.research-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 25px; margin-bottom: 28px; }
.research-heading h1 { margin-top: 8px; font-size: 31px; }
.research-heading p:not(.eyebrow) { font-size: 13px; color: var(--muted); margin-top: 8px; }
.research-actions { display: flex; flex-wrap: wrap; gap: 9px; }
.research-actions .button { padding: 9px 15px; font-size: 12px; min-height: 40px; }
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 23px; }
.metric-card { background: var(--surface); border: 1px solid var(--line); border-radius: 7px; padding: 22px; }
.metric-card p { font-size: 11px; color: var(--muted); }
.metric-card strong { display: block; font-size: 32px; font-weight: 500; margin: 8px 0 4px; font-variant-numeric: tabular-nums; }
.metric-card small { font-size: 10px; color: var(--muted); }
.research-panel { background: var(--surface); border: 1px solid var(--line); border-radius: 7px; margin-top: 25px; padding: 24px; }
.research-panel h2 { font-size: 17px; margin-bottom: 7px; }
.research-panel > p { color: var(--muted); font-size: 12px; }
.research-panel .table-wrap { margin-top: 19px; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 11px; text-align: left; }
th { color: var(--muted); font-weight: 400; white-space: nowrap; }
th, td { padding: 13px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th:first-child, td:first-child { padding-left: 0; }
td { font-variant-numeric: tabular-nums; }
tbody tr:last-child td { border-bottom: 0; }
.status-tag { display: inline-block; border-radius: 3px; padding: 2px 6px; background: var(--green-light); color: var(--green); font-size: 10px; white-space: nowrap; }
.status-tag.test-tag { background: #fff0df; color: #986027; }
.empty-note { padding: 26px 0; text-align: center; color: var(--muted); font-size: 12px; }
.research-info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.protocol-grid { display: grid; grid-template-columns: 100px 1fr; gap: 10px 14px; font-size: 11px; margin-top: 18px; }
.protocol-grid dt { color: var(--muted); }
.protocol-grid dd { margin: 0; overflow-wrap: anywhere; }
.export-row { display: flex; align-items: flex-end; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.export-row label { min-width: 138px; font-size: 11px; }
.export-row select { margin-top: 5px; }
.research-panel pre { white-space: pre-wrap; overflow-wrap: anywhere; font-family: monospace; font-size: 11px; line-height: 1.7; color: #56634f; max-height: 400px; overflow: auto; margin-top: 15px; }
.research-notice { font-size: 12px; color: var(--muted); border-left: 2px solid #b6c7aa; padding-left: 12px; margin-top: 19px; }
@media (min-width: 1500px) { .stage { width: min(100%, 520px); flex-basis: 520px; } }
@media (max-width: 960px) {
  .site-shell { width: calc(100% - 48px); }
  .hero { gap: 35px; }
  .hero h1 { font-size: 42px; }
  .two-methods { gap: 25px; }
  .two-methods .methods-note { display: none; }
  .experiment-layout { grid-template-columns: minmax(0, 1fr) 237px; gap: 27px; }
  .experiment-heading h1 { font-size: 22px; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 700px) {
  .site-shell { width: calc(100% - 36px); }
  .site-header { min-height: 83px; gap: 12px; }
  .brand { gap: 9px; font-size: 12px; }
  .brand-symbol { width: 36px; height: 36px; font-size: 22px; }
  .brand-subtitle { font-size: 9px; }
  .header-end { gap: 12px; font-size: 10px; }
  .study-label { display: none; }
  .test-badge { font-size: 9px; padding: 2px 5px; }
  .hero { min-height: 0; grid-template-columns: 1fr; padding: 37px 0 29px; gap: 29px; }
  .hero h1 { font-size: 42px; margin-top: 14px; margin-bottom: 14px; }
  .hero-description { font-size: 13px; }
  .hero-note { margin-top: 17px; font-size: 10px; }
  .hero-art { display: none; }
  .two-methods { gap: 21px; padding: 22px 0; }
  .two-methods > div { gap: 11px; }
  .two-methods h2 { font-size: 13px; }
  .two-methods p { font-size: 10px; }
  .step-index { font-size: 10px; }
  .setup-panel { margin-top: 31px; }
  .section-heading h2 { font-size: 19px; }
  .section-heading .subtle { font-size: 10px; }
  .profile-options { gap: 8px; }
  .profile-card { padding: 13px 10px; min-height: 117px; }
  .profile-card-top { font-size: 12px; }
  .radio-indicator { width: 13px; height: 13px; }
  .profile-count { font-size: 10px; }
  .profile-description { font-size: 9px; }
  .participant-fields { gap: 13px; margin-top: 21px; }
  .participant-fields label { font-size: 11px; }
  select { font-size: 11px; padding: 9px 8px; }
  .optional { font-size: 9px; margin-left: 3px; }
  .consent-info { font-size: 10px; gap: 10px; padding-top: 21px; }
  .consent-check { font-size: 11px; align-items: flex-start; }
  .consent-check input { flex-shrink: 0; margin-top: 2px; }
  .start-row { gap: 12px; }
  .start-row .subtle { font-size: 10px; }
  .start-row .button { padding: 10px 18px; gap: 14px; }
  .site-footer { margin-top: 43px; font-size: 9px; padding-top: 19px; }
  .intro-view { padding-top: 30px; }
  .intro-card { padding: 31px 22px; }
  .intro-card h1 { font-size: 24px; }
  .intro-description { font-size: 13px; }
  .intro-notes { font-size: 10px; }
  .experiment-view { padding-top: 25px; }
  .experiment-heading { gap: 15px; margin-bottom: 18px; align-items: flex-start; }
  .experiment-heading h1 { font-size: 20px; line-height: 1.6; }
  .experiment-heading .eyebrow { font-size: 9px; }
  .progress-info { min-width: 67px; flex-basis: 67px; font-size: 9px; padding-top: 3px; }
  .progress-info strong { display: block; margin-left: 0; margin-top: 2px; }
  .progress-track { width: 67px; margin-top: 8px; }
  .experiment-layout { grid-template-columns: 1fr; gap: 19px; }
  .stage { max-width: 430px; }
  .stage.context-stage { max-width: none; }
  .context-target-note { font-size: 11px; margin-bottom: 15px; }
  .stage-hint { font-size: 10px; margin-top: 11px; }
  .answer-panel { padding-top: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
  .task-label, .task-instruction, .panel-rule { display: none; }
  .answer-state { grid-column: 1; margin-top: 0; font-size: 10px; }
  .reset-button { grid-column: 1; justify-self: start; margin-top: 9px; margin-bottom: 13px; font-size: 10px; }
  .position-button { grid-column: 1; margin-top: 10px; min-height: 35px; font-size: 10px; }
  .confidence-fieldset { grid-column: 2; grid-row: 1 / span 4; }
  .confidence-fieldset legend { font-size: 10px; margin-bottom: 9px; }
  .confidence-fieldset legend .optional { display: block; margin-left: 0; }
  .confidence-options { gap: 4px; }
  .confidence-options span { height: 28px; font-size: 11px; }
  .confidence-caption { font-size: 8px; }
  .confidence-clear { font-size: 9px; }
  .submit-button, .submit-error, .keyboard-hint, .answer-panel > .error-message { grid-column: 1 / -1; }
  .submit-button { margin-top: 17px; }
  .keyboard-hint { font-size: 9px; margin-top: 10px; }
  .experiment-bottom { margin-top: 19px; font-size: 9px; gap: 15px; align-items: flex-start; }
  .experiment-bottom .text-button { font-size: 9px; white-space: nowrap; }
  .centered-view { padding-top: 74px; }
  .centered-view h1 { font-size: 25px; }
  .done-description { font-size: 12px; }
  .centered-actions { flex-direction: column; gap: 0; }
  .research-heading { flex-direction: column; align-items: flex-start; }
  .research-heading h1 { font-size: 25px; }
  .research-main { padding-top: 29px; }
  .metric-card { padding: 15px; }
  .metric-card strong { font-size: 27px; }
  .metrics-grid { gap: 10px; }
  .research-panel { padding: 18px; margin-top: 18px; }
  .research-info-grid { grid-template-columns: 1fr; gap: 0; }
  .export-row { gap: 9px; }
  .export-row label { flex: 1 1 100px; min-width: 100px; }
}
@media (prefers-reduced-motion: reduce) { *, *:before, *:after { animation-duration: .01ms !important; transition-duration: .01ms !important; } }