:root {
  --ink: #16231f;
  --muted: #63716c;
  --paper: #f5f7f2;
  --panel: #ffffff;
  --line: #dce3dd;
  --green: #13795b;
  --green-soft: #dff2e9;
  --amber: #bd6b19;
  --amber-soft: #fff0dc;
  --red: #b73b47;
  --red-soft: #fee7e9;
  --blue: #305dce;
  --shadow: 0 20px 55px rgba(29, 46, 39, .1);
  --radius: 20px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

button, textarea { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .45; }

.prototype-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 9px 24px;
  color: #fff;
  background: #16231f;
  font-size: 12px;
  letter-spacing: .06em;
}

.prototype-strip strong { color: #a5f0d4; }
.prototype-strip button { border: 0; color: #fff; background: transparent; text-decoration: underline; }

.shell { min-height: 100vh; padding-bottom: 92px; }
.eyebrow { margin: 0 0 7px; color: var(--green); font-size: 11px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.muted { color: var(--muted); }
.tiny { font-size: 12px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.row { display: flex; align-items: center; gap: 10px; }
.spread { justify-content: space-between; }

.button {
  min-height: 42px;
  padding: 10px 17px;
  border: 1px solid transparent;
  border-radius: 12px;
  color: #fff;
  background: var(--green);
  font-weight: 750;
}
.button:hover:not(:disabled) { filter: brightness(.95); }
.button.secondary { color: var(--ink); border-color: var(--line); background: #fff; }
.button.danger { background: var(--red); }
.button.wide { width: 100%; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 9px;
  border-radius: 99px;
  color: var(--muted);
  background: #eef1ee;
  font-size: 12px;
  font-weight: 750;
}
.badge.pass { color: var(--green); background: var(--green-soft); }
.badge.fail { color: var(--red); background: var(--red-soft); }
.badge.pending { color: var(--amber); background: var(--amber-soft); }

.panel { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); box-shadow: var(--shadow); }
.panel-head { display: flex; align-items: start; justify-content: space-between; gap: 20px; padding: 20px 20px 14px; }
.panel-head h2, .panel-head h3 { margin: 0; }
.panel-body { padding: 0 20px 20px; }

.status-line {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: var(--line);
}
.status-item { padding: 12px 14px; background: #fff; }
.status-item span { display: block; margin-bottom: 3px; color: var(--muted); font-size: 11px; }
.status-item strong { font-size: 13px; }

.round-list { display: grid; gap: 10px; }
.round {
  display: grid;
  grid-template-columns: 34px 1fr auto;
  align-items: center;
  gap: 10px;
  min-height: 58px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fbfcfa;
}
.round-index { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; color: #fff; background: #9aa59f; font-weight: 850; }
.round.pass .round-index { background: var(--green); }
.round.fail .round-index { background: var(--red); }
.round small { display: block; margin-top: 4px; color: var(--muted); }

.capture-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 530px;
  overflow: hidden;
  border-radius: 18px;
  background: radial-gradient(circle at 50% 22%, #28463d, #0e1915 72%);
}
.capture-stage::before {
  content: "";
  position: absolute;
  inset: 8% 16%;
  border: 1px dashed rgba(166, 240, 213, .45);
  border-radius: 120px 120px 24px 24px;
}
.mat { position: absolute; bottom: 6%; width: 44%; height: 10%; border: 1px solid rgba(255,255,255,.35); transform: perspective(160px) rotateX(55deg); background: rgba(110,218,177,.13); }
.person { position: relative; width: 145px; height: 315px; z-index: 1; }
.person i { position: absolute; display: block; background: #98f0cc; box-shadow: 0 0 12px rgba(152,240,204,.42); }
.person .head { left: 57px; top: 10px; width: 34px; height: 34px; border-radius: 50%; }
.person .torso { left: 71px; top: 45px; width: 4px; height: 126px; transform: rotate(-2deg); }
.person .shoulder { left: 36px; top: 66px; width: 75px; height: 4px; transform: rotate(3deg); }
.person .arm-l { left: 39px; top: 68px; width: 4px; height: 112px; transform: rotate(8deg); transform-origin: top; }
.person .arm-r { right: 37px; top: 70px; width: 4px; height: 112px; transform: rotate(-5deg); transform-origin: top; }
.person .pelvis { left: 48px; top: 169px; width: 52px; height: 4px; transform: rotate(-4deg); }
.person .leg-l { left: 55px; top: 171px; width: 4px; height: 132px; transform: rotate(3deg); transform-origin: top; }
.person .leg-r { right: 53px; top: 168px; width: 4px; height: 135px; transform: rotate(-4deg); transform-origin: top; }
.person .joint { width: 8px; height: 8px; border: 2px solid #07100d; border-radius: 50%; }
.scan-line { position: absolute; inset-inline: 12%; top: 29%; height: 1px; background: linear-gradient(90deg, transparent, #a5f0d4, transparent); animation: scan 3s ease-in-out infinite; }
@keyframes scan { 0%,100% { transform: translateY(-80px); opacity: .3; } 50% { transform: translateY(170px); opacity: 1; } }
.stage-label { position: absolute; top: 16px; left: 16px; color: #c9f8e5; font-size: 12px; }

.three-stage { isolation: isolate; border: 1px solid rgba(150, 240, 205, .16); background: radial-gradient(circle at 50% 32%, #23483c 0, #0b1713 66%, #07100d 100%); }
.three-stage::before { display: none; }
.three-stage.compact { min-height: 390px; }
.three-canvas { position: absolute; inset: 0; z-index: 0; cursor: grab; touch-action: none; }
.three-canvas:active { cursor: grabbing; }
.three-canvas canvas { display: block; width: 100%; height: 100%; }
.viewer-fallback { position: absolute; inset: 0; display: grid; place-items: center; padding: 30px; color: #ffd8db; background: #121b18; text-align: center; }

.viewer-topbar {
  position: absolute;
  z-index: 3;
  top: 15px;
  left: 15px;
  right: 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  pointer-events: none;
}
.viewer-status { display: flex; align-items: center; gap: 8px; color: #c8f8e6; font-size: 11px; }
.viewer-status i { width: 7px; height: 7px; border-radius: 50%; background: #72efbc; box-shadow: 0 0 0 5px rgba(114,239,188,.12), 0 0 16px rgba(114,239,188,.8); }
.viewer-presets, .viewer-modes, .viewer-layerbar { display: flex; gap: 3px; padding: 4px; border: 1px solid rgba(255,255,255,.13); border-radius: 10px; background: rgba(6,15,12,.72); box-shadow: 0 12px 30px rgba(0,0,0,.18); backdrop-filter: blur(12px); pointer-events: auto; }
.viewer-presets button, .viewer-modes button, .viewer-layerbar button, .metric-selector button { border: 0; border-radius: 7px; color: #8fac9f; background: transparent; font-size: 10px; font-weight: 750; white-space: nowrap; }
.viewer-presets button { padding: 7px 10px; }
.viewer-presets button.active, .viewer-modes button.active, .viewer-layerbar button.active { color: #092019; background: #8fe8c4; }
.viewer-modes { position: absolute; z-index: 3; top: 62px; right: 15px; }
.viewer-modes button { padding: 7px 9px; }
.viewer-layerbar { position: absolute; z-index: 3; top: 62px; left: 15px; }
.viewer-layerbar button { padding: 7px 8px; }

.viewer-readout { position: absolute; z-index: 3; left: 16px; bottom: 66px; min-width: 185px; padding: 12px 14px; border-left: 2px solid #8fe8c4; color: #fff; background: linear-gradient(90deg, rgba(7,17,13,.82), rgba(7,17,13,.18)); pointer-events: none; }
.viewer-readout small { display: block; margin-bottom: 4px; color: #86a99b; font-size: 9px; letter-spacing: .13em; text-transform: uppercase; }
.viewer-readout strong { display: block; font-size: 16px; }
.viewer-readout span { display: block; margin-top: 5px; color: #91a9a0; font-size: 9px; }

.anatomy-boundary {
  position: absolute;
  z-index: 4;
  top: 106px;
  right: 15px;
  display: none;
  width: min(280px, calc(100% - 30px));
  padding: 11px 13px;
  border: 1px solid rgba(255, 190, 133, .34);
  border-radius: 11px;
  color: #ffe1c3;
  background: rgba(60, 34, 19, .82);
  backdrop-filter: blur(12px);
}
.anatomy-boundary strong, .anatomy-boundary span { display: block; }
.anatomy-boundary strong { margin-bottom: 4px; font-size: 11px; }
.anatomy-boundary span { color: #d6bca4; font-size: 9px; line-height: 1.45; }
.three-stage[data-view-mode="anatomy"] .anatomy-boundary,
.three-stage[data-view-mode="fusion"] .anatomy-boundary { display: block; }

.pose-evidence {
  position: absolute;
  z-index: 3;
  top: 103px;
  left: 15px;
  display: grid;
  gap: 4px;
  width: 152px;
  pointer-events: none;
}
.pose-card {
  display: grid;
  grid-template-columns: 22px 1fr 12px;
  align-items: center;
  gap: 7px;
  padding: 6px 8px;
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 8px;
  color: #9bb5aa;
  background: rgba(6,15,12,.62);
  backdrop-filter: blur(9px);
}
.pose-card.active { border-color: rgba(143,232,196,.38); color: #d8fff0; }
.pose-card span, .pose-card strong, .pose-card small { display: block; }
.pose-card strong { font-size: 9px; }
.pose-card small { margin-top: 1px; color: #718d82; font-size: 7px; }
.pose-card b { color: #82e8bd; font-size: 9px; }
.pose-glyph { position: relative; width: 12px; height: 20px; margin: auto; border: 1px solid #88bbaa; border-radius: 7px 7px 4px 4px; }
.pose-glyph::before { content: ""; position: absolute; top: -4px; left: 3px; width: 4px; height: 4px; border-radius: 50%; background: #9ee8ca; }
.pose-2 { transform: scaleX(.6); }
.pose-3 { border-style: dashed; }
.pose-4 { transform: rotate(38deg) scaleY(.78); transform-origin: 50% 80%; }

.metric-selector { position: absolute; z-index: 4; left: 14px; right: 14px; bottom: 13px; display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; padding: 5px; border: 1px solid rgba(255,255,255,.12); border-radius: 11px; background: rgba(6,15,12,.8); backdrop-filter: blur(12px); }
.metric-selector button { padding: 8px 4px; }
.metric-selector button.active { color: #fff; background: rgba(143,232,196,.2); box-shadow: inset 0 0 0 1px rgba(143,232,196,.35); }
.metric-selector button.research { color: #e9bd83; }
.metric-selector button.research.active { color: #ffe4bc; background: rgba(234, 171, 92, .17); box-shadow: inset 0 0 0 1px rgba(234, 171, 92, .32); }
.metric-selector sup { margin-left: 2px; font-size: 7px; }
.three-stage .b-error { z-index: 5; bottom: 61px; max-width: 410px; }

.check-list { display: grid; gap: 9px; }
.check { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid #edf0ed; font-size: 13px; }
.check:last-child { border-bottom: 0; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px var(--green-soft); }

.metric-table { width: 100%; border-collapse: collapse; }
.metric-table th { padding: 10px 8px; color: var(--muted); font-size: 11px; text-align: right; border-bottom: 1px solid var(--line); }
.metric-table th:first-child, .metric-table td:first-child { text-align: left; }
.metric-table td { padding: 13px 8px; text-align: right; border-bottom: 1px solid #edf0ed; font-size: 13px; }
.metric-table tr:last-child td { border-bottom: 0; }
.metric-source { display: block; margin-top: 4px; color: var(--muted); font-size: 9px; font-weight: 500; line-height: 1.35; }
.round-values { white-space: nowrap; }
.change.up { color: var(--amber); }
.change.down { color: var(--green); }

.evidence-registry { display: grid; gap: 8px; margin-top: 16px; }
.evidence-item { display: grid; grid-template-columns: 10px 1fr auto; align-items: start; gap: 10px; padding: 12px; border: 1px solid var(--line); border-radius: 13px; background: #fbfcfa; }
.evidence-item strong, .evidence-item small { display: block; }
.evidence-item strong { font-size: 12px; }
.evidence-item small { margin-top: 4px; color: var(--muted); font-size: 10px; line-height: 1.45; }
.evidence-dot { width: 8px; height: 8px; margin-top: 3px; border-radius: 50%; }
.evidence-dot.measured { background: var(--green); box-shadow: 0 0 0 4px var(--green-soft); }
.evidence-dot.research { background: var(--amber); box-shadow: 0 0 0 4px var(--amber-soft); }
.evidence-dot.clinical { background: var(--blue); box-shadow: 0 0 0 4px #e7edff; }

.interpretation-layers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 16px; }
.interpretation-layers > div { display: flex; gap: 9px; padding: 12px; border-radius: 13px; background: #f2f5f2; }
.interpretation-layers b { color: var(--green); font-family: Georgia, serif; font-size: 18px; font-weight: 500; }
.interpretation-layers span, .interpretation-layers strong, .interpretation-layers small { display: block; }
.interpretation-layers strong { font-size: 11px; }
.interpretation-layers small { margin-top: 4px; color: var(--muted); font-size: 9px; line-height: 1.45; }
.interpretation-layers > div:last-child { background: var(--amber-soft); }
.interpretation-layers > div:last-child b { color: var(--amber); }

.report-audit { margin-top: 16px; padding: 15px; border: 1px solid var(--line); border-radius: 14px; background: #fbfcfa; }
.report-audit h3 { margin: 0; font-size: 15px; }
.audit-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; margin-top: 12px; overflow: hidden; border: 1px solid var(--line); border-radius: 10px; background: var(--line); }
.audit-grid > div { padding: 9px; background: #fff; }
.audit-grid span, .audit-grid strong { display: block; }
.audit-grid span { color: var(--muted); font-size: 8px; }
.audit-grid strong { margin-top: 4px; color: var(--green); font-size: 10px; }
.audit-grid strong.pending-text { color: var(--amber); }

textarea {
  width: 100%;
  min-height: 110px;
  resize: vertical;
  padding: 13px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fbfcfa;
}

.alert { padding: 13px 14px; border: 1px solid #f1c2c6; border-radius: 13px; color: #7d2630; background: var(--red-soft); font-size: 13px; }
.alert.good { color: #0f654a; border-color: #b9e0d0; background: var(--green-soft); }
.alert.warn { color: #865019; border-color: #efd0a6; background: var(--amber-soft); }

.variant-switcher {
  position: fixed;
  z-index: 50;
  left: 50%;
  bottom: 20px;
  display: grid;
  grid-template-columns: 40px minmax(175px, auto) 40px;
  align-items: center;
  padding: 6px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 999px;
  color: #fff;
  background: rgba(17, 28, 24, .94);
  box-shadow: 0 16px 45px rgba(0,0,0,.22);
  transform: translateX(-50%);
  backdrop-filter: blur(12px);
}
.variant-switcher button { width: 36px; height: 36px; border: 0; border-radius: 50%; color: #fff; background: rgba(255,255,255,.08); font-size: 18px; }
.variant-switcher .variant-label { text-align: center; }
.variant-label small { display: block; margin-bottom: 2px; color: #a8b5b0; font-size: 9px; letter-spacing: .12em; }
.variant-label strong { font-size: 12px; }

/* A · dense operator workstation */
.variant-a { background: #edf1ed; }
.variant-a .a-header { display: flex; align-items: end; justify-content: space-between; gap: 24px; padding: 22px 26px; }
.variant-a .a-header h1 { margin: 0; font-size: clamp(25px, 3vw, 42px); letter-spacing: -.04em; }
.a-grid { display: grid; grid-template-columns: 260px minmax(430px, 1fr) 320px; gap: 14px; padding: 0 18px 18px; }
.a-side { display: grid; align-content: start; gap: 14px; }
.a-side .panel { box-shadow: none; }
.a-main { display: grid; gap: 14px; }
.a-actions { display: flex; gap: 10px; padding-top: 14px; }
.protocol-step { display: flex; gap: 10px; padding: 11px 0; border-bottom: 1px solid #edf0ed; }
.protocol-step:last-child { border-bottom: 0; }
.protocol-step b { display: grid; flex: 0 0 auto; place-items: center; width: 25px; height: 25px; border-radius: 50%; color: var(--muted); background: #eef1ee; font-size: 11px; }
.protocol-step.active b { color: #fff; background: var(--green); }

/* B · guided kiosk */
.variant-b { color: #f6fbf8; background: #0c1814; }
.variant-b .prototype-strip { border-bottom: 1px solid rgba(255,255,255,.1); }
.b-shell { min-height: calc(100vh - 38px); display: grid; grid-template-rows: auto 1fr auto; padding: 22px 4vw 110px; }
.b-top { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.b-top h1 { margin: 0; font-size: 18px; }
.b-progress { display: flex; gap: 7px; }
.b-progress i { width: 44px; height: 4px; border-radius: 99px; background: rgba(255,255,255,.13); }
.b-progress i.on { background: #8ee7c2; }
.b-center { display: grid; grid-template-columns: minmax(340px, 620px) minmax(280px, 420px); align-items: center; justify-content: center; gap: 7vw; }
.b-copy h2 { max-width: 650px; margin: 0 0 18px; font-size: clamp(40px, 6vw, 82px); line-height: .98; letter-spacing: -.055em; }
.b-copy p { max-width: 520px; color: #a9bbb4; font-size: 17px; line-height: 1.6; }
.b-copy .button { min-width: 220px; min-height: 56px; margin-top: 22px; color: #0c1814; background: #9af0cd; font-size: 16px; }
.b-device { position: relative; }
.b-device .capture-stage { min-height: 520px; border: 1px solid rgba(255,255,255,.12); background: radial-gradient(circle at 50% 25%, #22463a, #08100d 74%); box-shadow: 0 40px 90px rgba(0,0,0,.35); }
.b-bottom { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; overflow: hidden; border: 1px solid rgba(255,255,255,.12); border-radius: 16px; background: rgba(255,255,255,.12); }
.b-bottom > div { padding: 14px 18px; background: #111f1a; }
.b-bottom small { display: block; margin-bottom: 5px; color: #8aa097; }
.b-bottom strong { font-size: 13px; }
.b-error { position: absolute; left: 18px; right: 18px; bottom: 18px; padding: 14px; border-radius: 12px; color: #ffd9dc; background: rgba(132, 27, 38, .92); font-size: 13px; }

/* C · longitudinal record */
.variant-c { background: #f8f5ef; }
.c-header { padding: 25px max(24px, 4vw) 12px; }
.c-header .row { flex-wrap: wrap; }
.c-header h1 { margin: 5px 0 0; font-family: Georgia, "Songti SC", serif; font-size: clamp(34px, 5vw, 64px); font-weight: 500; letter-spacing: -.045em; }
.c-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 20px; padding: 0 max(24px, 4vw) 26px; }
.c-main { display: grid; align-content: start; gap: 18px; }
.c-hero { padding: 26px; background: #173c32; color: #fff; }
.c-hero .status-line { margin-top: 22px; border-color: rgba(255,255,255,.15); background: rgba(255,255,255,.15); }
.c-hero .status-item { background: rgba(255,255,255,.05); }
.c-hero .status-item span { color: #a9c8bc; }
.timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; padding: 22px; }
.timeline-node { position: relative; padding: 32px 14px 4px; border-top: 2px solid #d8ded8; }
.timeline-node::before { content: ""; position: absolute; top: -7px; left: 13px; width: 12px; height: 12px; border-radius: 50%; background: #b5beb8; }
.timeline-node.active { border-color: var(--green); }
.timeline-node.active::before { background: var(--green); box-shadow: 0 0 0 5px var(--green-soft); }
.timeline-node small { display: block; color: var(--muted); }
.c-side { display: grid; align-content: start; gap: 18px; }
.c-side .three-stage { min-height: 430px; }
.c-side .viewer-layerbar { display: none; }
.c-side .viewer-modes { left: 12px; right: auto; }
.c-side .viewer-modes button { padding-inline: 6px; }
.c-side .pose-evidence { display: none; }
.c-side .anatomy-boundary { top: 101px; right: 12px; width: 190px; }
.c-side .viewer-readout { left: 12px; bottom: 100px; min-width: 0; }
.c-side .metric-selector { grid-template-columns: repeat(4, 1fr); }
.metric-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.metric-card { padding: 16px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.metric-card small { color: var(--muted); }
.metric-card strong { display: block; margin: 13px 0 3px; font-family: Georgia, serif; font-size: 27px; font-weight: 500; }
.metric-card span { font-size: 12px; }

@media (max-width: 1060px) {
  .a-grid { grid-template-columns: 220px 1fr; }
  .a-grid > .a-side:last-child { grid-column: 1 / -1; grid-template-columns: repeat(2, 1fr); }
  .b-center { grid-template-columns: 1fr 380px; gap: 28px; }
  .c-wrap { grid-template-columns: 1fr; }
  .c-side { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .prototype-strip { align-items: flex-start; padding-inline: 15px; }
  .a-grid, .b-center, .c-wrap { grid-template-columns: 1fr; }
  .a-grid > .a-side:last-child, .c-side { grid-column: auto; grid-template-columns: 1fr; }
  .a-header { align-items: flex-start !important; flex-direction: column; }
  .status-line { grid-template-columns: repeat(2, 1fr); }
  .b-shell { padding-inline: 18px; }
  .b-center { padding-block: 45px 25px; }
  .b-device .capture-stage { min-height: 390px; }
  .three-stage { min-height: 480px; }
  .three-stage.compact { min-height: 360px; }
  .viewer-layerbar { display: none; }
  .viewer-modes { top: 58px; left: 15px; right: auto; }
  .viewer-readout { bottom: 84px; }
  .metric-selector { grid-template-columns: repeat(4, 1fr); }
  .pose-evidence { display: none; }
  .anatomy-boundary { top: 99px; }
  .interpretation-layers, .audit-grid { grid-template-columns: 1fr; }
  .b-bottom, .metric-cards { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; }
  .timeline-node { border-top: 0; border-left: 2px solid #d8ded8; padding: 8px 8px 28px 32px; }
  .timeline-node::before { top: 8px; left: -7px; }
}