.calc-page-body { background: var(--paper); }
.calc-page { min-height: 70vh; padding-bottom: 72px; }
.calc-page .breadcrumb-nav { display: flex; gap: 8px; padding: 22px 0 0; color: var(--muted); font-size: 11px; }
.calc-page .breadcrumb-nav a:hover { color: var(--signal); }
.calc-heading { padding: 30px 0 26px; border-bottom: 3px solid var(--ink); }
.calc-heading h1 { margin: 5px 0 0; font: 700 clamp(30px,4.4vw,48px)/1.05 var(--serif); letter-spacing: 0; }
.calc-intro { max-width: 640px; margin: 13px 0 0; color: var(--muted); font-size: 13px; line-height: 1.65; }

.calc-layout { display: grid; grid-template-columns: minmax(0,5fr) minmax(0,7fr); gap: 26px; align-items: start; padding: 28px 0 0; }

.calc-form { padding: 22px; background: var(--white); border: 2px solid var(--ink); }
.calc-form-label { margin: 0 0 10px; color: var(--muted); font-size: 9px; font-weight: 900; text-transform: uppercase; }
.calc-presets { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 8px; margin-bottom: 20px; }
.calc-preset { display: grid; gap: 4px; padding: 11px 12px; border: 1px solid var(--line-dark); background: var(--white); color: var(--ink); text-align: left; cursor: pointer; }
.calc-preset strong { font-size: 12px; font-weight: 800; }
.calc-preset small { color: var(--muted); font-size: 10px; line-height: 1.4; }
.calc-preset:hover { border-color: var(--signal); }
.calc-preset.active { border-color: var(--signal); background: #fff4f1; box-shadow: inset 0 0 0 1px var(--signal); }
.calc-preset.active strong { color: var(--signal); }

.calc-fieldset { margin: 0 0 16px; padding: 0 0 2px; border: 0; }
.calc-fieldset legend { margin: 0 0 12px; padding: 0; font: 700 17px/1.2 var(--serif); }
.calc-fields { display: grid; gap: 12px; }
.calc-field { display: grid; gap: 7px; }
.calc-field-label { color: var(--muted); font-size: 10px; font-weight: 800; }
.calc-input { display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: center; height: 46px; border: 1px solid var(--line-dark); background: var(--white); }
.calc-input:focus-within { border-color: var(--signal); box-shadow: 0 0 0 1px var(--signal); }
.calc-input input { min-width: 0; height: 100%; padding: 0 0 0 12px; border: 0; outline: 0; background: transparent; font-size: 14px; font-weight: 700; }
.calc-input i { padding: 0 12px; color: var(--muted); font-size: 11px; font-style: normal; white-space: nowrap; }
.calc-hint { color: var(--muted); font-size: 10px; line-height: 1.5; }
.calc-hint span { color: var(--data); font-weight: 700; }

.calc-refresh { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 10px; margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line-dark); }
.calc-province { display: grid; gap: 5px; }
.calc-province span { color: var(--muted); font-size: 9px; font-weight: 800; }
.calc-province select { height: 38px; padding: 0 8px; border: 1px solid var(--line-dark); background: var(--white); color: var(--ink); font-size: 12px; font-weight: 700; }
.calc-refresh-btn { height: 38px; padding: 0 14px; border: 1px solid var(--signal); background: var(--white); color: var(--signal); font-size: 11px; font-weight: 800; cursor: pointer; }
.calc-refresh-btn:hover:not(:disabled) { background: var(--signal); color: var(--white); }
.calc-refresh-btn:disabled { opacity: 0.55; cursor: default; }
.calc-refresh-status { flex-basis: 100%; margin: 0; color: var(--muted); font-size: 10px; line-height: 1.5; min-height: 0; }
.calc-refresh-status.ok { color: var(--success); font-weight: 700; }
.calc-refresh-status.fail { color: var(--signal); font-weight: 700; }

.calc-advanced { margin: 0 0 16px; border-top: 1px solid var(--line); }
.calc-advanced summary { padding: 12px 0; color: var(--muted); font-size: 11px; font-weight: 800; cursor: pointer; list-style-position: inside; }
.calc-advanced summary:hover { color: var(--signal); }
.calc-advanced[open] summary { color: var(--ink); }
.calc-submit { width: 100%; height: 48px; margin-top: 6px; border: 0; background: var(--signal); color: white; font-size: 13px; font-weight: 800; cursor: pointer; }
.calc-submit:hover { background: var(--signal-dark); }
.calc-noscript { margin: 10px 0 0; color: var(--muted); font-size: 10px; line-height: 1.5; }

.calc-results { position: sticky; top: 22px; padding: 24px; background: var(--white); border: 2px solid var(--ink); }
.calc-verdict { padding-bottom: 18px; border-bottom: 2px solid var(--ink); }
.calc-verdict-label { margin: 0; color: var(--muted); font-size: 10px; font-weight: 900; text-transform: uppercase; }
.calc-verdict-value { margin: 6px 0 0; color: var(--success); font: 700 clamp(38px,5vw,56px)/1 var(--serif); }
.calc-verdict-spend .calc-verdict-value { color: var(--signal); }
.calc-verdict-note { display: inline-block; margin: 10px 0 0; padding: 4px 9px; background: var(--soft); color: var(--ink); font-size: 11px; font-weight: 700; line-height: 1.5; }
.calc-summary { margin: 14px 0 0; padding: 10px 12px; border-left: 3px solid var(--signal); background: var(--paper); color: var(--ink); font-size: 12px; line-height: 1.6; }

.calc-table { width: 100%; margin-top: 18px; border-collapse: collapse; font-size: 13px; }
.calc-table th, .calc-table td { padding: 11px 8px; border-bottom: 1px solid var(--line); text-align: right; }
.calc-table thead th { color: var(--muted); font-size: 10px; font-weight: 800; }
.calc-table tbody th { color: var(--muted); font-weight: 800; text-align: left; }
.calc-table tbody td { font-weight: 700; font-variant-numeric: tabular-nums; }
.calc-table tr:last-child th, .calc-table tr:last-child td { border-bottom: 0; }
.calc-diff-save { color: var(--success); }
.calc-diff-more { color: var(--signal); }

.calc-bars { display: grid; gap: 16px; margin-top: 20px; }
.calc-bar-group { display: grid; gap: 7px; }
.calc-bar-caption { margin: 0; color: var(--muted); font-size: 10px; font-weight: 900; text-transform: uppercase; }
.calc-bar-row { display: grid; grid-template-columns: 44px minmax(0,1fr) 84px; align-items: center; gap: 10px; }
.calc-bar-name { color: var(--muted); font-size: 10px; font-weight: 800; }
.calc-bar-track { display: block; height: 18px; background: var(--soft); }
.calc-bar { display: block; height: 100%; transition: width 240ms ease; }
.calc-bar-ev { background: var(--success); }
.calc-bar-gas { background: var(--ink); }
.calc-bar-value { font-size: 11px; font-variant-numeric: tabular-nums; text-align: right; }

.calc-energy-note { margin: 18px 0 0; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.calc-energy-note span { color: var(--ink); font-weight: 800; }
.calc-blend { margin: 8px 0 0; color: var(--data); font-size: 11px; font-weight: 700; }
.calc-breakeven { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 0; padding: 12px 14px; background: var(--soft); font-size: 12px; line-height: 1.55; }
.calc-breakeven strong { font-size: 10px; font-weight: 900; text-transform: uppercase; }
.calc-copy { margin-top: 18px; padding: 11px 16px; border: 1px solid var(--line-dark); background: var(--white); color: var(--ink); font-size: 11px; font-weight: 800; cursor: pointer; }
.calc-copy:hover { border-color: var(--signal); color: var(--signal); }
.calc-copy-feedback { margin-left: 10px; color: var(--success); font-size: 11px; font-weight: 700; }

.calc-method, .calc-fields-notes, .calc-faq, .calc-related { padding: 26px 0 0; }
.calc-method h2, .calc-fields-notes h2, .calc-faq h2, .calc-related h2 { margin: 0 0 14px; padding-bottom: 10px; border-bottom: 2px solid var(--ink); font: 700 22px/1.2 var(--serif); }
.calc-method p { max-width: 760px; margin: 0 0 10px; color: var(--muted); font-size: 13px; line-height: 1.7; }
.calc-fields-notes ul { display: grid; gap: 12px; max-width: 760px; margin: 0; padding: 0; list-style: none; }
.calc-fields-notes li { display: grid; gap: 4px; }
.calc-fields-notes li strong { font-size: 12px; font-weight: 800; }
.calc-fields-notes li span { color: var(--muted); font-size: 12px; line-height: 1.65; }
.calc-faq details { border-bottom: 1px solid var(--line); }
.calc-faq summary { padding: 13px 0; font-size: 13px; font-weight: 800; cursor: pointer; list-style-position: inside; }
.calc-faq summary:hover { color: var(--signal); }
.calc-faq details p { max-width: 760px; margin: 0; padding: 0 0 14px; color: var(--muted); font-size: 12px; line-height: 1.7; }
.calc-related ul { display: flex; flex-wrap: wrap; gap: 9px; margin: 0; padding: 0; list-style: none; }
.calc-related a { display: inline-flex; align-items: center; min-height: 34px; padding: 0 12px; border: 1px solid var(--line-dark); background: var(--white); font-size: 11px; font-weight: 800; }
.calc-related a:hover { border-color: var(--signal); color: var(--signal); }

@media (max-width: 900px) {
  .calc-layout { grid-template-columns: 1fr; }
  .calc-results { position: static; }
}
@media (max-width: 560px) {
  .calc-presets { grid-template-columns: 1fr; }
  .calc-table { font-size: 12px; }
  .calc-table th, .calc-table td { padding: 9px 4px; }
  .calc-bar-row { grid-template-columns: 38px minmax(0,1fr) 72px; gap: 7px; }
  .calc-refresh { align-items: stretch; }
}