.gravel-page .tool-card { overflow: hidden; }
.calculator-page.gravel-page .tool-card { padding: clamp(16px, 3vw, 32px); }
.gravel-page .heading-copy { max-width: 660px; color: var(--ink); line-height: 1.6; }
.gravel-first-answer { max-width: 660px; color: var(--muted); font-size: .9rem; line-height: 1.6; margin: 12px 0 0; }
.gravel-page #gravel-calculator { scroll-margin-top: 20px; }
.gravel-page input[aria-invalid="true"] { border-color: #a23b25; outline: 2px solid #a23b2526; }
.gravel-workspace { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(320px, .85fr); gap: 24px; align-items: start; }
.gravel-inputs { min-width: 0; }
.gravel-settings-grid, .gravel-buy-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.gravel-settings-grid { margin-top: 26px; }
.gravel-buy-grid { margin-top: 18px; }
.gravel-note { margin: 18px 0 0; padding: 12px 14px; border-left: 3px solid #c0932d; background: var(--amber-soft); color: var(--amber-ink); font-size: .8rem; line-height: 1.5; }
.gravel-rows-bar, .gravel-buy-bar { margin-top: 28px; }
.gravel-rows { display: grid; gap: 12px; margin-top: 14px; }
.gravel-row { padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: #fbfcf8; }
.gravel-row-header { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.gravel-row-title { font-size: .85rem; font-weight: 850; }
.gravel-row-driver { display: none; margin-left: 7px; padding: 3px 7px; border-radius: 999px; color: var(--green-dark); background: var(--green-soft); font-size: .68rem; font-weight: 800; }
.gravel-row.is-driver { border-color: #8cc9a7; box-shadow: 0 0 0 2px rgba(140,201,167,.16); }
.gravel-row.is-driver .gravel-row-driver { display: inline-block; }
.gravel-row-grid { display: grid; grid-template-columns: 1.15fr .7fr repeat(3, minmax(0, 1fr)); gap: 10px; align-items: end; }
.gravel-shape-fields { display: contents; }
.gravel-row-grid .field span { font-size: .75rem; }
.gravel-row-subtotal { margin: 11px 0 0; padding-top: 9px; border-top: 1px dashed var(--line); color: var(--muted); font-size: .76rem; }
.gravel-row-subtotal strong { color: var(--ink); }
.gravel-remove-row { flex: 0 0 auto; }
.gravel-page .estimate-panel { position: sticky; top: 20px; }
.gravel-results-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.gravel-conversion-card, .gravel-cost-card { grid-column: 1 / -1; }
.gravel-conversions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 10px; font-size: .88rem; line-height: 1.45; }
.gravel-conversions span, .gravel-cost-summary span { display: flex; justify-content: space-between; gap: 8px; border-bottom: 1px dashed var(--line); }
.gravel-order-result { font-size: .96rem; font-weight: 800; line-height: 1.35; }
.gravel-cost-summary { display: grid; gap: 4px 10px; font-size: .88rem; line-height: 1.45; }
.gravel-cost-summary strong { color: var(--ink); }
.gravel-formula { margin: 18px 0 0; color: var(--muted); font-size: .88rem; }
.gravel-disclaimer { margin: 16px 0 0; color: var(--muted); font-size: .8rem; line-height: 1.55; }
.gravel-copy-fallback { width: 100%; margin-top: 10px; border: 1px solid var(--line); border-radius: 10px; padding: 10px; font: inherit; color: var(--ink); background: #fff; line-height: 1.5; resize: vertical; }
fieldset { min-width: 0; margin: 0; padding: 14px; border: 1px solid var(--line); border-radius: 12px; }
fieldset legend { padding: 0 6px; color: var(--ink); font-size: .85rem; font-weight: 850; }
.gravel-buy-grid fieldset > .field, .gravel-buy-grid fieldset > div { margin-top: 12px; }
.gravel-purchase-note { color: var(--muted); font-size: .8rem; line-height: 1.55; margin: 12px 0 0; }
.gravel-page [hidden] { display: none !important; }
.calculator-page.gravel-page .estimate-panel .result-card { padding: 16px; min-width: 0; }
.calculator-page.gravel-page .estimate-panel .result-card:nth-child(odd) { padding-right: 16px; }
.gravel-page .gravel-order-result, .gravel-page .gravel-conversions strong, .gravel-page .gravel-cost-summary strong { color: #fff9ea; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.gravel-page .gravel-conversions b, .gravel-page .gravel-cost-summary b { color: #e0e9dc; font-weight: 500; }
.gravel-page .gravel-conversions span, .gravel-page .gravel-cost-summary span { border-bottom-color: #ffffff2e; flex-wrap: wrap; }
.gravel-page .gravel-disclaimer { color: #d1ddcd; }
.gravel-page .estimate-panel .result-value { overflow-wrap: anywhere; }
.gravel-page .gravel-example-grid p { font-variant-numeric: tabular-nums; }
.gravel-page button, .gravel-page summary { touch-action: manipulation; }
@media (max-width: 900px) { .gravel-workspace { grid-template-columns: 1fr; } .gravel-page .estimate-panel { position: static; } }
@media (max-width: 700px) { .gravel-row-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .gravel-row-grid .field:first-child { grid-column: 1 / -1; } .gravel-shape-fields { display: contents; } }
@media (max-width: 430px) { .gravel-page .tool-card { padding: 16px; } .gravel-settings-grid, .gravel-buy-grid, .gravel-row-grid, .gravel-results-grid, .gravel-conversions { grid-template-columns: 1fr; } .gravel-row-grid .field:first-child { grid-column: auto; } .gravel-conversion-card, .gravel-cost-card { grid-column: auto; } .gravel-row-header { align-items: flex-start; } }
@media (max-width: 560px) {
  .calculator-page.gravel-page .gravel-results-grid, .gravel-page .gravel-conversions { grid-template-columns: 1fr; }
  .gravel-page .gravel-conversion-card, .gravel-page .gravel-cost-card { grid-column: auto; }
  .gravel-page .gravel-rows-bar { align-items: flex-start; flex-direction: column; }
  .gravel-page .estimate-panel .result-actions .button { min-height: 44px; }
}