/* Shared warm surfaces; homepage compositions remain for Part 2. */
body { background: var(--color-bg); color: var(--color-ink); }
h1,h2,h3,h4 { font-weight: 500; }
.heading-accent { font: inherit; color: var(--color-accent); }
.hero, main > .section, body > .section:not(.calculator-section) { margin-inline: 24px; border-radius: var(--radius-container); }
.hero-bg { background: linear-gradient(0deg,rgba(251,248,243,.94),rgba(251,248,243,.72) 55%,rgba(251,248,243,.30)); }
.hero h1, .hero-sub, .hero .btn--ghost { color: var(--color-ink) !important; }
.hero-card { background: rgba(255,255,255,.78); border-color: var(--color-border); }
.hero-card-label, .hero-card-value { color: var(--color-ink-muted); }
.hero-card-num, .hero-eyebrow { color: var(--color-accent); }
.section--dark { --color-dark-ink: var(--color-ink); --color-dark-muted: var(--color-ink-muted); --color-dark-border: var(--color-border); --color-accent: #8A5200; background: var(--color-inset); color: var(--color-ink); }
.trust-fact-card { background: var(--color-surface); border-color: var(--color-border); border-radius: var(--radius-card); }
.site-footer { background: var(--color-dark-bg); }
.btn { border-radius: var(--radius-pill); font-weight: 500; }
.btn--primary { background: var(--color-accent-fill); color: var(--color-ink); }
:is(.card,.checkout-summary,.confirmation-card,.order-invalid) { border-radius: var(--radius-card); }
:is(.product-img-wrap,.checkout-product-photo,.who-unit-img) { border-radius: var(--radius-img); }
.form-input,.form-select { border-radius: var(--radius-control); }
.calculator-section { padding: var(--section-gap) 24px; }
.calculator-panel { max-width: 1360px; margin-inline: auto; padding: 20px; background: var(--color-inset); border: 1px solid var(--color-border); border-radius: var(--radius-container); }
.calculator-heading { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-bottom: 16px; }
.calculator-kicker { font-size: 12.65px; color: var(--color-ink-muted); margin-bottom: 3px; line-height: 1.4; }
.calculator-heading h2 { font-size: clamp(29.9px,2.645vw,36.8px); letter-spacing: -.045em; line-height: 1.15; }
.calculator-clear { padding: 0 12px; min-height: 44px; border: 1px solid var(--color-border); border-radius: var(--radius-pill); font-size: 13.8px; }
.calculator-progress { display: none; }
.zone-label { display: flex; align-items: baseline; gap: 8px; color: var(--color-accent); font-size: 12.65px; font-weight: 500; line-height: 1.4; }
.zone-label span { color: var(--color-ink-muted); }
.calculator-situations { margin-bottom: 12px; }
.calculator-situations > .zone-label { display: none; }
.situation-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.situation-pills button { min-height: 44px; padding: 10px 20px; border: 1px solid var(--color-border); border-radius: var(--radius-pill); font-size: 13.8px; color: var(--color-ink-muted); background: rgba(255,255,255,.6); }
.situation-pills button[aria-pressed="true"] { border-color: var(--color-ink); color: var(--color-ink); background: var(--color-surface); }
.situation-preview { display: none; }
.calculator-workspace { display: grid; grid-template-columns: minmax(0,1fr) 350px; gap: 20px; align-items: stretch; }
.calculator-appliances { min-width: 0; }
.tiles-heading { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.tiles-heading > span { font-size: 11.5px; color: var(--color-ink-faint); }
.appliance-tiles { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: 8px; align-items: stretch; }
.appliance-tile { position: relative; min-width: 0; border: 1px solid var(--color-border); border-radius: var(--radius-control); background: rgba(255,255,255,.58); }
.appliance-tile.is-selected { border-color: var(--color-accent); background: #fff; }
.tile-toggle { position: relative; display: flex; width: 100%; flex-direction: column; justify-content: center; gap: 3px; padding: 12px 9px; text-align: left; min-height: 62px; border-radius: var(--radius-control); }
.tile-name { font-size: 13.8px; font-weight: 500; white-space: nowrap; }
.tile-watts { color: var(--color-ink-faint); font-size: 11.5px; white-space: nowrap; }
.tile-selection-summary { display: none; }
.tile-corner { position: absolute; top: 8px; right: 8px; width: 6px; height: 6px; border-radius: 2px; border: 1px solid #AB9C8C; }
.is-selected .tile-corner { background: var(--color-accent-fill); border-color: var(--color-accent-fill); }
.tile-controls { padding: 0 4px 5px; }
.tile-stepper { display: grid; grid-template-columns: 44px minmax(16px,1fr) 44px; align-items: center; }
.tile-stepper button { min-width: 44px; min-height: 44px; font-size: 20.7px; font-weight: 400; border-radius: 12px; color: var(--color-ink); }
.tile-stepper button:hover:not(:disabled) { background: var(--color-inset); }
.tile-stepper button:disabled { opacity: .35; cursor: default; }
.stepper-value { display: flex; flex-direction: column; text-align: center; align-items: center; line-height: 1.3; font-size: 13.8px; }
.stepper-value small { color: var(--color-ink-faint); font-size: 10px; }
.tile-editor-button { display: none; }
.calculator-fine-tune { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: center; margin-top: 18px; border-top: 1px solid var(--color-border); padding-top: 16px; }
.fine-outage { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.fine-outage > span, .fine-spend label { font-size: 12.65px; color: var(--color-ink-muted); }
.fine-outage .tile-stepper { width: 126px; flex-shrink: 0; background: #fff; border-radius: 12px; }
.fine-outage output { text-align: center; font-size: 14.95px; }
.fine-spend { display: flex; flex-direction: column; gap: 6px; }
.fine-spend label span { font-size: 11.5px; }
.fine-spend input { width: 100%; min-height: 44px; padding: 8px 12px; border: 1px solid #AC9A87; border-radius: 12px; color: var(--color-ink); background: #fff; font-size: 13.8px; }
.calculator-result { min-width: 0; background: #fff; padding: 16px; border: 1px solid var(--color-border); border-radius: var(--radius-card); }
.calculator-result > .zone-label { margin-bottom: 10px; }
.compact-product { display: grid; grid-template-columns: 100px minmax(0,1fr); gap: 14px; align-items: center; }
.compact-product-photo { height: 100px; padding: 8px; display: flex; justify-content: center; background: var(--color-bg); border-radius: var(--radius-img); }
.compact-product-photo img { width: 100%; height: 100%; object-fit: contain; border-radius: 12px; }
.compact-product .zone-label { font-size: 10.35px; color: var(--color-ink-faint); margin-bottom: 5px; }
.compact-product h3 { font-size: 23px; letter-spacing: -.04em; line-height: 1.15; }
.compact-model { font-size: 11.5px; color: var(--color-ink-faint); margin-top: 6px; }
.compact-stat { display: flex; align-items: center; gap: 20px; margin: 12px 0; }
.compact-stat > div:first-child { display: flex; flex-direction: column; }
.compact-stat strong { font-size: 66.7px; letter-spacing: -.075em; font-weight: 500; line-height: 1; white-space: nowrap; }
.compact-stat strong span { font-size: .42em; letter-spacing: -.03em; }
.compact-stat > div > span, .compact-runtime > span { font-size: 11.5px; color: var(--color-ink-faint); margin-top: 5px; }
.compact-runtime { display: flex; flex-direction: column; padding-left: 16px; border-left: 1px solid var(--color-border); gap: 6px; }
.compact-runtime strong { font-size: 14.95px; letter-spacing: -.025em; white-space: normal; line-height: 1.4; }
.compact-price { font-size: 20.7px; font-weight: 500; letter-spacing: -.03em; margin-top: 14px; }
.compact-notice, .compact-closest { font-size: 12.65px; line-height: 1.5; margin: 6px 0; color: var(--color-accent); }
.compact-none-reason { font-size: 14.95px; margin: 20px 0 12px; line-height: 1.6; }
.compact-payback { font-size: 12.65px; line-height: 1.5; color: var(--color-ink-muted); margin-top: 8px; }
.calculator-workings { border-top: 1px solid var(--color-border); margin-top: 16px; font-size: 11.5px; }
.calculator-workings summary { display: flex; justify-content: space-between; align-items: center; min-height: 44px; cursor: pointer; list-style: none; color: var(--color-ink-muted); }
.calculator-workings summary::-webkit-details-marker { display: none; }
#workings-body { padding-bottom: 12px; font-size: 12.65px; line-height: 1.6; }
.calculator-actions { display: flex; gap: 8px; margin-top: 6px; flex-direction: row; }
.calculator-actions .btn { flex: 1; }
.calculator-actions .btn { padding: 12px; min-height: 44px; justify-content: center; font-size: 12.65px; text-align: center; white-space: normal; line-height: 1.5; }
.calculator-result.is-empty { align-self: start; }
#result-empty { font-size: 14.95px; color: var(--color-ink-muted); }
.calculator-live-bar, .mobile-only { display: none; }
@media (min-width: 768px) and (max-width: 1199px) {
  .calculator-workspace { grid-template-columns: minmax(0,1fr) 300px; gap: 12px; }
  .appliance-tiles { grid-template-columns: repeat(3,minmax(0,1fr)); }
}
@media (max-width: 767px) {
  html { scroll-padding-top: 76px; }
  .hero, main > .section, body > .section:not(.calculator-section) { margin-inline: 16px; }
  .calculator-section { padding: 32px 16px; }
  .calculator-panel { padding: 16px 12px 12px; border-radius: 32px; scroll-margin-top: 0; }
  .calculator-heading { margin-bottom: 12px; gap: 8px; }
  .calculator-heading h2 { font-size: 25.3px; }
  .calculator-kicker { display: none; }
  .calculator-clear { font-size: 11.5px; padding: 0 10px; }
  .calculator-progress { display: grid; grid-template-columns: 1fr 1fr 1.4fr; gap: 8px; margin-bottom: 16px; }
  .calculator-progress button { min-height: 44px; display: flex; gap: 7px; align-items: center; border-bottom: 1px solid #D7CABA; font-size: 12.65px; color: var(--color-ink-faint); }
  .calculator-progress button span { font-size: 11.5px; }
  .calculator-progress [aria-current="step"] { border-bottom-color: var(--color-accent); color: var(--color-ink); }
  .calculator-situations { margin: 0; }
  .calculator-situations > .zone-label { display: flex; margin: 14px 0 18px; }
  .situation-pills { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
  .situation-pills button { min-height: 54px; padding: 10px; font-size: 13.8px; border-radius: var(--radius-control); }
  .situation-preview { display: flex; align-items: center; gap: 14px; padding: 24px 8px; margin-top: 20px; border-top: 1px solid var(--color-border); }
  .preview-photo { width: 96px; height: 112px; flex-shrink: 0; padding: 12px; background: #fff; border-radius: 28px; }
  .preview-photo img { height: 100%; width: 100%; object-fit: contain; }
  .situation-preview .zone-label { font-size: 10.35px; }
  .situation-preview strong { display: block; font-size: 20.7px; font-weight: 500; line-height: 1.3; margin: 8px 0; }
  .situation-preview p:not(.zone-label) { font-size: 12.65px; }
  .situation-preview small { display: block; font-size: 11.5px; color: var(--color-ink-faint); margin-top: 8px; }
  .situation-next { width: 100%; min-height: 48px; justify-content: space-between; font-size: 13.8px; }
  .mobile-only { display: flex; }
  .calculator-workspace { display: block; }
  .tiles-heading { margin-bottom: 8px; }
  .tiles-heading > span { font-size: 10.35px; }
  .appliance-tiles { grid-template-columns: 1fr 1fr; gap: 6px; }
  .appliance-tile { border-radius: 12px; }
  .tile-toggle { min-height: 54px; padding: 7px 9px; border-radius: 12px; }
  .tile-name { font-size: 12.65px; }
  .tile-watts { font-size: 10.35px; }
  .is-selected .tile-toggle { padding-right: 45px; }
  .tile-selection-summary { display: inline; }
  .tile-editor-button { position: absolute; right: 0; top: 7px; width: 44px; min-height: 44px; font-size: 10.35px; color: var(--color-accent); }
  .is-selected .tile-editor-button { display: block; }
  .tile-corner { top: 5px; right: 5px; width: 4px; height: 4px; }
  .tile-controls { display: none; }
  .is-editing .tile-controls { display: block; }
  .tile-stepper { grid-template-columns: 44px minmax(18px,1fr) 44px; }
  .calculator-fine-tune { gap: 10px; margin-top: 10px; padding-top: 10px; }
  .fine-outage { flex-direction: column; align-items: flex-start; gap: 4px; }
  .fine-outage > span, .fine-spend label { font-size: 10.35px; }
  .fine-spend label span { font-size: 10px; }
  .fine-spend input { padding: 8px; font-size: 12.65px; }
  .fine-spend { gap: 4px; }
  .fine-outage .tile-stepper { width: 118px; }
  .calculator-live-bar { position: sticky; bottom: 0; z-index: 2; display: flex; align-items: center; gap: 10px; justify-content: space-between; margin-top: 10px; padding: 8px 0 0; background: var(--color-inset); border-top: 1px solid var(--color-border); }
  .calculator-live-bar p { font-size: 12.65px; line-height: 1.5; max-width: 22ch; }
  .calculator-live-bar .btn { min-height: 44px; padding: 10px 18px; font-size: 12.65px; gap: 14px; }
  .calculator-result { padding: 16px; border-radius: 24px; }
  .result-back { min-height: 44px; align-items: center; margin: -8px 0 12px; font-size: 12.65px; color: var(--color-ink-muted); }
  .compact-product { grid-template-columns: 112px minmax(0,1fr); }
  .compact-product-photo { height: 112px; }
  .compact-product h3 { font-size: 24.15px; }
  .compact-stat { margin-top: 24px; }
  .compact-stat strong { font-size: 73.6px; }
  .compact-runtime strong { font-size: 14.95px; }
  .compact-price { margin-top: 18px; }
  .calculator-actions .btn { min-height: 48px; font-size: 13.8px; }
  .calculator-actions { flex-direction: column; }
  [data-step="1"] .calculator-workspace,
  [data-step="2"] .calculator-situations,
  [data-step="2"] .calculator-result,
  [data-step="3"] .calculator-situations,
  [data-step="3"] .calculator-appliances { display: none; }
}