:root {
  --vaga-space-page:20px;
  --vaga-content-width:1240px;
  --vaga-canvas-bg:var(--vaga-color-green-ink)
}
* {
  box-sizing:border-box
}
html {
  scroll-behavior:smooth;
  scroll-padding-top:28px
}
body {
  margin:0;
  color:var(--vaga-text-primary);
  background:var(--vaga-bg-body);
  font-size:16px;
  line-height:1.6
}
button,input,select {
  font:inherit
}
button,a,input,select,summary {
  -webkit-tap-highlight-color:transparent
}
button,a {
  touch-action:manipulation
}
a {
  color:inherit
}
button {
  cursor:pointer
}
button:disabled {
  opacity:.48;
  cursor:not-allowed
}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,canvas:focus-visible {
  outline:3px solid var(--vaga-border-focus);
  outline-offset:4px
}
[hidden] {
  display:none!important
}
h1,h2,h3,p {
  margin:0
}
h1,h2,h3 {
  line-height:1.2;
  letter-spacing:-.035em
}
h2 {
  font-size:30px
}
h3 {
  font-size:20px
}
p+p {
  margin-top:12px
}
main,.site-header,footer {
  max-width:var(--vaga-content-width);
  margin:auto;
  padding-inline:var(--vaga-space-page)
}
.site-header {
  min-height:96px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  padding-block:20px;
  border-bottom:1px solid var(--vaga-border)
}
.app-name {
  display:flex;
  gap:12px;
  align-items:center;
  text-decoration:none;
  font-size:29px;
  font-weight:600;
  letter-spacing:-.055em;
  line-height:1.1
}
.app-symbol {
  font-size:40px;
  display:grid;
  place-items:center;
  border:1px solid var(--vaga-primary);
  border-radius:var(--vaga-radius-md);
  width:49px;
  height:49px
}
.app-subtitle {
  display:block;
  font-size:9px;
  letter-spacing:.14em;
  margin-top:6px
}
.site-header nav {
  display:flex;
  gap:24px;
  font-size:14px
}
.site-header nav a {
  text-decoration:none;
  padding-block:12px
}
.site-header nav a:hover {
  text-decoration:underline;
  text-underline-offset:6px
}
.version {
  font-size:12px;
  padding:6px 12px;
  border:1px solid var(--vaga-border);
  border-radius:var(--vaga-radius-pill)
}
.intro {
  display:grid;
  gap:32px;
  padding-block:48px
}
.eyebrow {
  font-size:11px;
  letter-spacing:.14em;
  font-weight:600;
  line-height:1.5;
  margin-bottom:16px
}
.intro h1 {
  font-size:clamp(38px,5.5vw,66px);
  line-height:1.08;
  letter-spacing:-.065em;
  max-width:680px
}
.lead {
  color:var(--vaga-text-secondary);
  max-width:490px;
  font-size:17px;
  margin-top:24px
}
.intro-actions,.actions {
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  align-items:center
}
.intro-actions {
  margin-top:32px
}
.button {
  min-height:48px;
  padding:12px 20px;
  display:inline-flex;
  justify-content:center;
  align-items:center;
  gap:16px;
  border-radius:var(--vaga-radius-sm);
  font-weight:500;
  font-size:14px;
  text-decoration:none;
  border:1px solid var(--vaga-primary);
  line-height:1.4;
  transition:background var(--vaga-duration-short) var(--vaga-ease-standard)
}
.primary {
  background:var(--vaga-primary);
  color:var(--vaga-on-primary)
}
.primary:hover:not(:disabled) {
  background:var(--vaga-primary-hover)
}
.secondary {
  background:transparent;
  color:var(--vaga-primary);
  border-color:var(--vaga-border)
}
.secondary:hover:not(:disabled) {
  background:var(--vaga-bg-hover);
  border-color:var(--vaga-primary)
}
.privacy-line {
  font-size:12px;
  margin-top:20px;
  color:var(--vaga-text-secondary);
  display:flex;
  gap:8px;
  align-items:center
}
.intro-visual {
  background:var(--vaga-bg-elevated);
  border-radius:var(--vaga-radius-xl);
  overflow:hidden;
  min-width:0;
  align-self:center
}
.intro-visual svg {
  width:100%;
  display:block
}
.body-shape {
  fill:var(--vaga-brand-beige);
  stroke:var(--vaga-color-stone-300);
  stroke-width:1.6
}
.neck-line,.ear-line {
  fill:none;
  stroke:var(--vaga-color-stone-300);
  stroke-width:2
}
.measure-line {
  stroke:var(--vaga-primary);
  stroke-width:2;
  fill:none;
  stroke-dasharray:5 4
}
.angle-line {
  stroke:var(--vaga-brand-orange);
  stroke-width:3;
  fill:none
}
.measure-point {
  fill:var(--vaga-primary);
  stroke:var(--vaga-brand-beige);
  stroke-width:3
}
.intro-visual text {
  fill:var(--vaga-primary);
  font-size:14px;
  font-family:inherit
}
.visual-note {
  display:flex;
  align-items:center;
  gap:8px;
  font-size:11px;
  padding:20px 24px;
  border-top:1px solid var(--vaga-border)
}
.visual-note>span:last-child {
  margin-left:auto;
  color:var(--vaga-text-secondary)
}
.small-dot {
  height:7px;
  width:7px;
  background:var(--vaga-primary);
  border-radius:var(--vaga-radius-pill)
}
.principles {
  display:flex;
  flex-wrap:wrap;
  gap:20px;
  justify-content:space-between;
  padding-block:24px;
  border-block:1px solid var(--vaga-border);
  font-size:12px
}
.principles b {
  margin-right:10px;
  color:var(--vaga-text-muted)
}
.workspace,.history-section,.guide-section {
  padding-block:56px
}
.section-heading {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  margin-bottom:28px
}
.section-heading .eyebrow {
  margin-bottom:10px
}
.badge,.status-pill {
  border-radius:var(--vaga-radius-pill);
  background:var(--vaga-bg-elevated);
  padding:8px 14px;
  font-size:12px;
  white-space:nowrap
}
.steps {
  display:flex;
  margin:0 0 24px;
  padding:0;
  list-style:none;
  gap:16px;
  font-size:12px
}
.steps li {
  display:flex;
  gap:8px;
  align-items:center;
  color:var(--vaga-text-muted)
}
.steps li span {
  width:26px;
  height:26px;
  display:grid;
  place-items:center;
  border:1px solid var(--vaga-border);
  border-radius:var(--vaga-radius-pill);
  flex-shrink:0
}
.steps .current {
  color:var(--vaga-primary);
  font-weight:600
}
.steps .current span {
  background:var(--vaga-primary);
  color:var(--vaga-on-primary);
  border-color:var(--vaga-primary)
}
.measure-layout {
  display:grid;
  gap:24px
}
.camera-panel {
  border:1px solid var(--vaga-border);
  border-radius:var(--vaga-radius-lg);
  padding:16px;
  min-width:0
}
.panel-heading {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:8px;
  margin-bottom:16px
}
.panel-heading h3 {
  font-size:16px;
  letter-spacing:-.02em
}
.status-pill {
  font-size:10px;
  padding:5px 10px
}
.frame {
  background:var(--vaga-canvas-bg);
  border-radius:var(--vaga-radius-sm);
  overflow:hidden;
  display:grid;
  place-items:center;
  position:relative;
  min-height:250px
}
.placeholder {
  text-align:center;
  padding:40px 24px;
  color:var(--vaga-text-inverse);
  max-width:480px
}
.placeholder svg {
  width:52px;
  height:52px;
  fill:none;
  stroke:var(--vaga-brand-beige);
  stroke-width:2;
  margin-bottom:16px
}
.placeholder h3 {
  font-size:21px
}
.placeholder p {
  font-size:14px;
  line-height:1.6;
  margin:16px 0;
  max-width:340px
}
.placeholder>span {
  font-size:11px
}
.frame canvas,.frame video {
  display:block;
  max-width:100%;
  width:100%;
  height:auto
}
.frame canvas {
  cursor:crosshair
}
.frame video {
  max-height:560px;
  object-fit:contain
}
.frame-caption {
  font-size:12px;
  line-height:1.6;
  margin-block:14px;
  color:var(--vaga-text-secondary)
}
.camera-options,.form-row {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
  margin-block:16px
}
label {
  font-size:12px;
  display:block;
  min-width:0
}
input,select {
  display:block;
  max-width:100%;
  width:100%;
  min-height:44px;
  padding:9px 10px;
  background:var(--vaga-bg-body);
  border:1px solid var(--vaga-border);
  border-radius:var(--vaga-radius-sm);
  color:var(--vaga-text-primary);
  font-size:13px;
  margin-top:6px
}
select {
  padding-right:24px
}
input[type=checkbox] {
  appearance:auto;
  accent-color:var(--vaga-primary);
  min-height:20px;
  height:20px;
  width:20px;
  margin:2px 0 0;
  flex-shrink:0
}
.safety-note {
  font-size:11px;
  color:var(--vaga-text-secondary);
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--vaga-border)
}
.measurement-panel {
  padding:24px;
  background:var(--vaga-bg-elevated);
  border-radius:var(--vaga-radius-lg);
  min-width:0;
  align-self:start
}
.measurement-panel .eyebrow {
  font-size:10px
}
.check-guide {
  list-style:none;
  counter-reset:guide;
  margin:24px 0;
  padding:0
}
.check-guide li {
  counter-increment:guide;
  position:relative;
  padding-left:32px;
  margin-bottom:24px
}
.check-guide li:before {
  content:counter(guide);
  position:absolute;
  left:0;
  top:0;
  display:grid;
  place-items:center;
  border:1px solid var(--vaga-primary);
  border-radius:var(--vaga-radius-pill);
  width:20px;
  height:20px;
  font-size:11px
}
.check-guide b {
  font-size:14px;
  display:block
}
.check-guide span {
  font-size:12px;
  display:block;
  line-height:1.6;
  color:var(--vaga-text-secondary);
  margin-top:6px
}
.text-link {
  font-size:13px;
  font-weight:500;
  text-underline-offset:5px
}
.small {
  font-size:12px;
  color:var(--vaga-text-secondary);
  line-height:1.6;
  margin-top:12px
}
.text-button {
  background:none;
  border:0;
  padding:12px 0;
  min-height:44px;
  color:var(--vaga-primary);
  text-decoration:underline;
  text-underline-offset:4px;
  font-size:12px
}
.editor-heading {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px
}
.editor-heading h3 {
  font-size:18px
}
.point-buttons {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:8px;
  margin-top:20px
}
.point-buttons button {
  background:var(--vaga-bg-body);
  border:1px solid var(--vaga-border);
  color:var(--vaga-primary);
  min-height:44px;
  border-radius:var(--vaga-radius-sm);
  font-size:12px;
  padding:8px
}
.point-buttons [aria-pressed=true] {
  background:var(--vaga-primary);
  color:var(--vaga-on-primary)
}
.point-buttons .done:after {
  content:' ✓'
}
.coordinate-row {
  display:grid;
  grid-template-columns:1fr 1fr auto;
  align-items:end;
  gap:8px;
  margin-top:16px
}
.coordinate-row .button {
  min-height:44px;
  padding:9px 12px;
  font-size:12px
}
.check-label {
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:12px;
  line-height:1.6;
  margin-block:20px
}
.full-width {
  width:100%
}
.result {
  border-top:1px solid var(--vaga-border);
  padding-top:24px;
  margin-top:24px
}
.angle-value {
  font-size:76px;
  line-height:1.1;
  letter-spacing:-.065em;
  font-weight:500
}
.angle-value>span:last-child {
  font-size:44px;
  vertical-align:top;
  line-height:1.45;
  margin-left:4px
}
.result h3 {
  font-size:16px;
  margin-top:12px
}
.result>p:not(.eyebrow) {
  font-size:12px;
  margin-top:12px;
  color:var(--vaga-text-secondary)
}
.result .button {
  margin-top:20px
}
.message {
  padding:12px 14px;
  font-size:13px;
  background:var(--vaga-bg-elevated);
  border:1px solid var(--vaga-border);
  border-radius:var(--vaga-radius-sm);
  margin:12px 0;
  color:var(--vaga-text-primary)
}
.message.error {
  color:var(--vaga-danger);
  border-color:var(--vaga-danger)
}
.history-section {
  border-top:1px solid var(--vaga-border)
}
.history-toolbar {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap
}
.history-toolbar .check-label {
  margin:0
}
.history-toolbar .button {
  font-size:12px;
  min-height:42px;
  padding:8px 14px
}
.empty-history {
  border:1px dashed var(--vaga-border);
  border-radius:var(--vaga-radius-lg);
  padding:40px 20px;
  text-align:center;
  margin-top:24px
}
.empty-history>span {
  font-size:32px
}
.empty-history h3 {
  font-size:18px;
  margin-block:8px
}
.empty-history p {
  font-size:13px;
  color:var(--vaga-text-secondary);
  max-width:460px;
  margin:auto
}
.vaga-table-wrapper {
  overflow-x:auto;
  width:100%;
  max-width:100%;
  min-width:0;
  margin-top:24px;
  border:1px solid var(--vaga-border);
  border-radius:var(--vaga-radius-md)
}
table {
  border-collapse:collapse;
  min-width:640px;
  width:100%;
  text-align:left;
  font-size:13px
}
th,td {
  padding:14px 16px;
  border-bottom:1px solid var(--vaga-border)
}
th {
  font-size:11px;
  background:var(--vaga-bg-elevated);
  font-weight:500
}
tr:last-child td {
  border-bottom:0
}
.type-label {
  font-size:11px;
  padding:5px 9px;
  background:var(--vaga-bg-elevated);
  border-radius:var(--vaga-radius-pill);
  white-space:nowrap
}
.guide-section {
  display:grid;
  gap:32px;
  border-top:1px solid var(--vaga-border)
}
.guide-section>div>p:not(.eyebrow) {
  font-size:14px;
  color:var(--vaga-text-secondary);
  margin-top:20px;
  max-width:350px
}
.guide-details details {
  border-bottom:1px solid var(--vaga-border);
  padding-bottom:16px;
  margin-bottom:16px
}
.guide-details summary {
  cursor:pointer;
  font-size:15px;
  font-weight:500;
  padding:8px 0;
  min-height:44px
}
.guide-details p {
  font-size:13px;
  color:var(--vaga-text-secondary);
  margin-top:12px
}
.source-note {
  font-size:11px!important
}
.source-note a {
  text-underline-offset:3px
}
footer {
  border-top:1px solid var(--vaga-border);
  padding-block:32px;
  display:flex;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  font-size:12px
}
footer>div>b {
  font-size:22px;
  letter-spacing:-.035em
}
footer p {
  margin-top:6px;
  color:var(--vaga-text-secondary);
  max-width:440px
}
.sponsor {
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:4px
}
.sponsor>span {
  font-size:10px;
  color:var(--vaga-text-secondary)
}
.sponsor>b {
  font-size:15px
}
.skip-link {
  position:fixed;
  top:-100px;
  left:16px;
  z-index:100;
  background:var(--vaga-primary);
  color:var(--vaga-on-primary);
  padding:14px
}
.skip-link:focus {
  top:10px
}
.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
}
.no-script {
  padding:24px;
  text-align:center;
  background:var(--vaga-bg-elevated)
}
@media(min-width:768px) {
  :root {
    --vaga-space-page:32px
  }
  .intro {
    grid-template-columns:1.3fr 1fr;
    gap:40px;
    padding-block:64px
  }
  .intro-visual {
    margin-top:4px
  }
  .intro-actions {
    gap:16px
  }
  .measure-layout {
    grid-template-columns:minmax(0,1.55fr) minmax(0,1fr)
  }
  .camera-panel {
    padding:24px
  }
  .frame {
    min-height:330px
  }
  .guide-section {
    grid-template-columns:1fr 1.5fr;
    gap:72px
  }
  h2 {
    font-size:34px
  }
  .steps {
    gap:40px;
    font-size:13px
  }
  .workspace,.history-section,.guide-section {
    padding-block:64px
  }
}
@media(min-width:1200px) {
  .intro {
    gap:80px
  }
  .measure-layout {
    grid-template-columns:minmax(0,1.8fr) minmax(0,1fr)
  }
  .measurement-panel {
    padding:28px
  }
  .intro-visual {
    max-width:460px
  }
}
@media(max-width:600px) {
  .site-header {
    gap:16px
  }
  .site-header nav {
    gap:18px;
    order:3;
    width:100%;
    justify-content:space-between;
    border-top:1px solid var(--vaga-border);
    padding-top:8px
  }
  .version {
    font-size:10px;
    padding:4px 8px
  }
  .app-name {
    font-size:25px
  }
  .app-symbol {
    width:42px;
    height:42px;
    font-size:34px
  }
  .intro {
    padding-top:32px
  }
  .intro-visual {
    max-width:450px;
    width:100%;
    margin:auto
  }
  .principles {
    gap:12px;
    flex-direction:column
  }
  .steps {
    gap:8px;
    justify-content:space-between;
    font-size:10px
  }
  .steps li {
    gap:5px
  }
  .steps li span {
    width:23px;
    height:23px
  }
  .section-heading h2 {
    font-size:26px
  }
  .camera-panel {
    padding:12px
  }
  .camera-options {
    grid-template-columns:1fr
  }
  .measurement-panel {
    padding:20px
  }
  .placeholder {
    padding:32px 16px
  }
  .placeholder h3 {
    font-size:18px
  }
  .placeholder p {
    font-size:13px
  }
  .history-toolbar .actions {
    width:100%;
    justify-content:space-between
  }
  .guide-section h2 {
    font-size:30px
  }
}
@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto
  }
  * {
    transition:none!important
  }
}

/* Bố cục đo tự động; lớp mốc khớp vùng video không lật. */
.mode-row { display:flex; gap:20px; align-items:center; flex-wrap:wrap; margin-bottom:24px; }
.mode-row label { min-width:0; flex:1 1 280px; }
.mode-row p { flex:1 1 280px; }
.frame #pose-overlay { position:absolute; inset:0; width:100%; height:100%; object-fit:contain; pointer-events:none; cursor:default; }
.auto-options { background:var(--vaga-bg-elevated); border:1px solid var(--vaga-border); border-radius:var(--vaga-radius-sm); padding:16px; margin-block:16px; }
.auto-options>label { margin-bottom:12px; }
.auto-options input[type=number] { max-width:140px; display:block; margin-top:6px; }
#auto-panel>p { margin-block:14px; }
#auto-panel hr { border:0; border-top:1px solid var(--vaga-border); margin-block:24px; }
#auto-panel .check-guide { margin-top:24px; }


/* Các thao tác luôn đi cùng khung camera, dùng một vùng cuộn chính. */
main > section, .intro-copy, .camera-panel > *, .measurement-panel > *,
.analysis-heading > *, .camera-hud > *, footer > * { min-width:0; }
.app-symbol { display:block; border:0; flex:none; width:48px; height:48px; }
.camera-actions { margin-top:12px; gap:8px; }
.camera-actions .button { flex:1 1 auto; min-width:0; min-height:48px; }
.frame { aspect-ratio:4 / 3; min-height:0; max-height:560px; }
.frame video, .frame #image-canvas { height:100%; max-height:560px; object-fit:contain; }
.camera-hud { position:absolute; z-index:2; top:12px; left:12px; right:12px;
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding:10px 12px; border-radius:var(--vaga-radius-sm);
  background:var(--vaga-color-green-ink); color:var(--vaga-brand-beige); pointer-events:none; }
.hud-reading { display:flex; align-items:baseline; gap:10px; }
.hud-reading > span { font-size:11px; }
.hud-reading strong { font-size:27px; line-height:1.2; font-variant-numeric:tabular-nums; }
.hud-context { display:grid; gap:2px; text-align:right; font-size:10px; line-height:1.4; }
.frame-caption { margin-block:12px; }
.camera-settings { border-top:1px solid var(--vaga-border); margin-top:12px; }
.camera-settings summary { display:list-item; padding:12px 4px; min-height:44px;
  cursor:pointer; font-size:12px; font-weight:500; }
.camera-options { margin:4px 0 16px; }
.auto-options { display:grid; grid-template-columns:minmax(0,1fr) auto;
  gap:8px 16px; align-items:center; padding:12px; margin-block:12px; }
.auto-options .auto-toggle { margin:0; align-items:center; min-height:44px; }
.auto-toggle span { max-width:220px; }
.interval-field label { font-size:11px; margin-bottom:6px; }
.number-stepper { display:grid; grid-template-columns:44px 68px 44px; gap:0;
  border:1px solid var(--vaga-border); border-radius:var(--vaga-radius-sm);
  background:var(--vaga-bg-body); }
.number-stepper button { min-width:44px; min-height:44px; padding:0; border:0;
  border-radius:var(--vaga-radius-sm); background:transparent; color:var(--vaga-primary);
  font-size:24px; line-height:1; }
.number-stepper button:hover:not(:disabled) { background:var(--vaga-bg-hover); }
.auto-options .number-stepper input[type=number] { width:100%; max-width:none; min-width:0;
  margin:0; padding:8px 3px; border:0; border-inline:1px solid var(--vaga-border);
  border-radius:0; text-align:center; font-size:16px; font-variant-numeric:tabular-nums; }
.auto-options #interval-status { grid-column:1 / -1; margin:0; font-size:11px; }
.analysis-panel { border-top:1px solid var(--vaga-border); margin-top:24px; padding-top:24px; }
.analysis-heading { display:flex; gap:12px; align-items:flex-start; justify-content:space-between; }
.analysis-heading .eyebrow { margin-bottom:8px; }
.analysis-heading h3 { font-size:19px; }
.analysis-heading .badge { max-width:50%; white-space:normal; line-height:1.4;
  padding:6px 10px; font-size:10px; background:var(--vaga-bg-body); }
#analysis-message { margin-top:14px; font-size:12px; color:var(--vaga-text-secondary); }
.analysis-metrics { display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:16px 12px; padding:16px 0; margin:16px 0 0; border-block:1px solid var(--vaga-border); }
.analysis-metrics > div { min-width:0; }
.analysis-metrics dt { font-size:10px; color:var(--vaga-text-secondary); }
.analysis-metrics dd { margin:4px 0 0; font-size:21px; line-height:1.3;
  font-weight:500; font-variant-numeric:tabular-nums; overflow-wrap:anywhere; }
.analysis-metrics .metric-wide { grid-column:1 / -1; }
.analysis-metrics .metric-wide dd { font-size:16px; }
.baseline-actions { margin-top:16px; gap:12px; }
.baseline-actions .button { padding:10px 12px; font-size:12px; min-height:44px; }
.analysis-advice { padding-left:18px; margin:16px 0 0; color:var(--vaga-text-secondary);
  font-size:12px; line-height:1.6; }
.analysis-advice li + li { margin-top:8px; }
.analysis-trend { display:flex; flex-wrap:wrap; gap:6px; margin-top:12px;
  font-size:11px; color:var(--vaga-text-secondary); overflow-wrap:anywhere; }
.analysis-trend:empty { display:none; }
.analysis-trend > span { padding:4px 8px; border:1px solid var(--vaga-border);
  border-radius:var(--vaga-radius-pill); }
.sponsor { flex-direction:row; align-items:center; gap:16px; padding:12px; }
.sponsor-logo { display:block; width:76px; height:76px; flex:none; }
.sponsor > div { display:grid; gap:4px; }
.sponsor > div > span { font-size:10px; color:var(--vaga-text-secondary); }
.sponsor > div > b { font-size:15px; }
/* Ô lặp chuẩn, chỉ trong dải trang trí của phần ghi nhận bảo trợ. */
.sponsor-pattern { flex-basis:100%; height:52px; border-radius:var(--vaga-radius-sm);
  background-image:url('./brand/core/assets/patterns/vaga-pattern-future-repeat-cell.svg');
  background-repeat:repeat; background-size:104px 52px; }
@media(min-width:768px) {
  .intro { padding-block:40px; }
  .intro h1 { font-size:clamp(38px,4.7vw,60px); }
  .workspace { padding-top:40px; }
  .camera-panel { padding:16px; }
  .mode-row { margin-bottom:20px; }
}
@media(max-width:767px) {
  :root { --vaga-space-page:16px; }
  html { scroll-padding-top:12px; }
  .site-header { min-height:72px; padding-block:12px; gap:10px; }
  .app-name { font-size:25px; gap:10px; }
  .app-symbol { width:42px; height:42px; }
  .site-header nav { order:3; width:100%; display:flex; justify-content:space-between;
    border-top:1px solid var(--vaga-border); gap:12px; padding-top:4px; }
  .site-header nav a { font-size:12px; min-height:44px; padding-block:12px; }
  .version { font-size:9px; padding:4px 7px; }
  .intro { padding-block:20px; gap:0; }
  .intro .eyebrow, .intro-visual, .principles { display:none; }
  .intro h1 { font-size:28px; line-height:1.15; letter-spacing:-.045em; }
  .lead { font-size:13px; line-height:1.5; margin-top:10px; max-width:480px; }
  .intro-actions { margin-top:8px; }
  .intro-actions .primary { display:none; }
  .intro-actions .secondary { padding:8px 12px; min-height:44px; font-size:12px; }
  .privacy-line { margin-top:8px; font-size:10px; }
  .workspace, .history-section, .guide-section { padding-block:28px; }
  .workspace { padding-top:8px; }
  .section-heading { gap:8px; margin-bottom:16px; }
  .section-heading .eyebrow { margin-bottom:6px; font-size:10px; }
  .section-heading h2 { font-size:23px; }
  .section-heading .badge { font-size:10px; padding:5px 10px; }
  .steps { gap:8px; font-size:10px; margin-bottom:12px; }
  .steps li { gap:5px; }
  .steps li span { width:23px; height:23px; }
  .mode-row { margin-bottom:16px; gap:0; }
  .mode-row label { flex-basis:100%; }
  .mode-row p { margin-top:6px; font-size:11px; }
  .measure-layout { gap:16px; }
  .camera-panel { padding:10px; }
  .panel-heading { margin-bottom:10px; }
  .panel-heading h3 { font-size:14px; }
  .status-pill { font-size:9px; padding:4px 8px; }
  .frame { min-height:0; max-height:48svh; aspect-ratio:4 / 3; }
  .frame video, .frame #image-canvas { max-height:48svh; }
  .placeholder { padding:20px 12px; }
  .placeholder svg { width:36px; height:36px; margin-bottom:8px; }
  .placeholder h3 { font-size:16px; }
  .placeholder p { font-size:12px; line-height:1.5; margin:8px 0; }
  .placeholder > span { font-size:10px; }
  .camera-actions { gap:8px; margin-top:8px; }
  .camera-actions .button { padding:10px 12px; font-size:12px; min-height:48px; }
  .camera-actions #start-camera, .camera-actions #capture { flex:1 1 140px; }
  .camera-actions #stop-camera { flex:0 1 auto; }
  .camera-hud { top:8px; left:8px; right:8px; padding:7px 9px; gap:8px; }
  .hud-reading { display:grid; gap:0; }
  .hud-reading > span { font-size:9px; }
  .hud-reading strong { font-size:23px; }
  .hud-context { font-size:9px; max-width:62%; }
  .frame-caption { font-size:11px; line-height:1.5; margin-block:10px; }
  .auto-options { gap:8px; padding:10px; }
  .auto-toggle { font-size:11px; }
  .number-stepper { grid-template-columns:44px 52px 44px; }
  .interval-field label { font-size:10px; }
  .camera-settings summary { font-size:11px; }
  .safety-note { font-size:10px; margin-top:10px; padding-top:10px; }
  .measurement-panel { padding:18px; }
  #auto-panel .eyebrow { margin-top:0; margin-bottom:8px; }
  #auto-panel .angle-value { font-size:60px; }
  #auto-panel > p { margin-block:10px; }
  .analysis-panel { margin-top:20px; padding-top:20px; }
  .analysis-heading h3 { font-size:18px; }
  footer { gap:16px; padding-block:24px; }
  .sponsor { padding:12px 0; }
}
@media(max-width:359px) {
  :root { --vaga-space-page:12px; }
  .app-name { font-size:22px; }
  .app-subtitle { font-size:8px; }
  .version { max-width:76px; white-space:normal; text-align:center; line-height:1.4; }
  .intro h1 { font-size:25px; }
  .section-heading h2 { font-size:21px; }
  .section-heading .badge { font-size:9px; }
  .auto-options { grid-template-columns:1fr; }
  .interval-field { display:flex; justify-content:space-between; align-items:center; gap:8px; }
  .interval-field label { margin:0; }
  .placeholder { padding:16px 10px; }
  .placeholder > span { display:none; }
  .placeholder p { font-size:11px; }
  .camera-actions .button { padding-inline:10px; }
}

.baseline-note { font-size:11px; }
.wellness-note { margin-top:16px; border-top:1px solid var(--vaga-border); }
.wellness-note summary { min-height:44px; padding-block:12px; font-size:12px; cursor:pointer; }
.wellness-note p { font-size:12px; color:var(--vaga-text-secondary); }
.wellness-note p + p { margin-top:8px; }

/* Khóa vùng chứa để ảnh dọc không làm hàng grid lớn hơn khung quan sát. */
.frame video, .frame #image-canvas {
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  max-height:100%;
  object-fit:contain;
}