.lab-explanation { max-width: 80ch; margin-block: 28px; }
.lab-workbench { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px; margin-block: 32px; }
.lab-form, .lab-result { padding: clamp(20px, 3vw, 36px); border: 1px solid var(--line); background: var(--paper); min-width: 0; }
.lab-form fieldset { border: 0; padding: 0; margin: 0; }
.lab-form legend { font-weight: 700; margin-bottom: 20px; font-size: .9rem; }
.lab-form label { display: grid; gap: 7px; margin-bottom: 18px; font-weight: 600; }
.lab-form input { width: 100%; min-width: 0; font: inherit; padding: 12px; border: 1px solid var(--line); border-radius: 0; background: #fff; color: var(--ink); }
.lab-form input:focus-visible, .lab-form button:focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; }
.lab-help, .lab-source { font-size: .85rem; line-height: 1.65; }
.lab-result [role="status"] { padding-top: 22px; margin-top: 22px; border-top: 1px solid var(--line); font-weight: 650; font-size: 1.05rem; line-height: 1.7; }
.lab-color-preview { padding: 28px; background: #f6f2e9; color: #001b3f; overflow-wrap: anywhere; }
.lab-color-preview p { font-size: 1rem; }
.lab-color-preview strong { font-family: var(--serif); font-size: clamp(1.3rem, 3vw, 1.8rem); }
.lab-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--line); margin: 30px 0; }
.lab-metrics > div { padding: clamp(18px, 3vw, 32px); }
.lab-metrics > div + div { border-left: 1px solid var(--line); }
.lab-metrics dt { letter-spacing: .12em; font-size: .8rem; font-weight: 700; }
.lab-metrics dd { margin: 10px 0 0; }
.lab-metrics strong { display: block; font-family: var(--serif); font-size: clamp(1.8rem, 4vw, 3rem); }
.lab-metrics span { display: block; margin-top: 10px; font-size: .9rem; }
.lab-process { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); list-style: none; padding: 0; gap: 16px; margin: 36px 0; }
.lab-process li { border-top: 3px solid var(--ink); padding-top: 16px; }
.lab-process span { display: block; font-size: .85rem; margin-bottom: 12px; }
.lab-process strong { display: block; }
.lab-process p { font-size: .9rem; }
.lab-photo-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 32px; align-items: start; }
.lab-documentary { margin: 0; min-width: 0; }
.lab-documentary img { display: block; width: 100%; height: auto; }
.lab-documentary figcaption { font-size: .8rem; line-height: 1.7; margin-top: 14px; }
.lab-photo-grid ul { padding-left: 22px; line-height: 1.8; }
@media (max-width: 800px) {
  .lab-workbench, .lab-photo-grid { grid-template-columns: minmax(0, 1fr); }
  .lab-process { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 480px) {
  .lab-metrics { grid-template-columns: minmax(0, 1fr); }
  .lab-metrics > div + div { border-left: 0; border-top: 1px solid var(--line); }
  .lab-form button { white-space: normal; width: 100%; }
}

.weight-comparison{margin:2rem 0;padding:1.5rem;border:1px solid currentColor;border-radius:.5rem}.weight-comparison figcaption{font-weight:700;margin-bottom:1rem}.weight-comparison>div{display:grid;grid-template-columns:minmax(8rem,1fr) 3fr;align-items:center;gap:1rem;margin:.75rem 0}.weight-comparison meter{width:100%;height:1.5rem;accent-color:#477560}.weight-comparison p{margin-bottom:0}@media(max-width:480px){.weight-comparison>div{grid-template-columns:1fr;gap:.25rem}}