/* Калькулятор ленточного фундамента — свои стили поверх общего слоя rb-calc.css.
   Мир темы: белый лист, чернила #111, серая шкала, жёлтый только как маркер, оранжевый — предупреждения. */
#content .remboo-fundament{
  --ink:#111;--muted:#5A5A56;--line:#E8E8E5;--line-strong:#111;--paper:#fff;--warn:#FF5A1F;--warn-deep:#B23A0C;
  clear:both;width:100%;color:var(--ink);font:400 16px/1.55 system-ui,-apple-system,"Segoe UI",sans-serif;
}
#content .remboo-fundament *{box-sizing:border-box}
#content .remboo-fundament [hidden]{display:none!important}
#content .remboo-fundament .calc-shell{max-width:1180px;margin:0 auto;padding:clamp(18px,3vw,42px);background:var(--paper)}
#content .remboo-fundament .calc-intro{max-width:760px;margin:0 0 28px}
#content .remboo-fundament .eyebrow{margin:0 0 6px;color:var(--ink);font-size:.78rem;font-weight:800;letter-spacing:.11em;text-transform:uppercase}
#content .remboo-fundament .calculator-title,#content .remboo-fundament h2,#content .remboo-fundament h3{color:var(--ink);font-weight:760;letter-spacing:-.025em}
#content .remboo-fundament .calculator-title{margin:0 0 8px;font-size:clamp(2rem,5vw,3.6rem);line-height:1.04}
#content .remboo-fundament h2{margin:0 0 16px;font-size:clamp(1.55rem,3vw,2.25rem);line-height:1.15}
#content .remboo-fundament h3{margin:0;font-size:1.08rem;line-height:1.25}
#content .remboo-fundament p{margin:0 0 14px}
#content .remboo-fundament .calc-intro>p:last-child{color:var(--muted);font-size:1.08rem}
#content .remboo-fundament .workspace{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(380px,.98fr);gap:24px;align-items:start}
#content .remboo-fundament form{min-width:0;padding:24px;border:1.5px solid var(--line-strong);border-radius:0;background:var(--paper);box-shadow:none}
#content .remboo-fundament .section-title{display:flex;align-items:center;gap:12px;margin:4px 0 16px;padding-top:20px;border-top:1px solid var(--line)}
#content .remboo-fundament .section-title:first-child{padding-top:0;border-top:0}
#content .remboo-fundament .section-title>span{color:var(--muted);font:13px ui-monospace,monospace}
#content .remboo-fundament label{display:block;margin:0 0 15px;color:var(--ink);font-size:.93rem;font-weight:700}
#content .remboo-fundament input,#content .remboo-fundament select,#content .remboo-fundament button,#content .remboo-fundament textarea{font:inherit}
#content .remboo-fundament input,#content .remboo-fundament select,#content .remboo-fundament textarea{width:100%;min-height:48px;margin-top:6px;padding:10px 12px;border:1.5px solid var(--ink);border-radius:0;background:var(--paper);color:var(--ink);font-size:1rem;box-shadow:none}
#content .remboo-fundament input:focus,#content .remboo-fundament select:focus,#content .remboo-fundament textarea:focus,#content .remboo-fundament button:focus-visible,#content .remboo-fundament summary:focus-visible{outline:3px solid #FFD500;outline-offset:2px}
#content .remboo-fundament input[aria-invalid="true"],#content .remboo-fundament textarea[aria-invalid="true"]{border-color:var(--warn-deep);box-shadow:0 0 0 3px rgba(255,90,31,.25)}
#content .remboo-fundament small,#content .remboo-fundament .hint{display:block;margin-top:5px;color:var(--muted);font-size:.84rem;font-weight:400;line-height:1.45}
#content .remboo-fundament .field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
#content .remboo-fundament .field-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
#content .remboo-fundament .optional{margin-left:6px;color:var(--muted);font-size:.78rem;font-weight:500}
#content .remboo-fundament aside{position:sticky;top:18px;min-width:0}
#content .remboo-fundament .result-card{overflow:hidden;border:1.5px solid var(--ink);border-radius:0;background:var(--paper);color:var(--ink);box-shadow:none}
#content .remboo-fundament .result-card>.eyebrow{padding:0;color:var(--ink)}
#content .remboo-fundament #calc-error{margin:0 0 20px;padding:10px 12px;border-left:4px solid var(--warn);background:transparent;color:var(--ink);font-weight:700}
#content .remboo-fundament #calc-output{padding:0} /* поля карточки даёт общий слой (.result-card 22/24 px, на телефоне 18/16): свои не дублировать */
#content .remboo-fundament .primary-result{display:flex;flex-direction:column;padding:2px 0 18px}
#content .remboo-fundament .primary-result strong{font-size:clamp(2.1rem,6vw,3.6rem);line-height:1.05;letter-spacing:-.045em}
#content .remboo-fundament .primary-result span{margin-top:4px;color:var(--muted);font-size:.86rem}
#content .remboo-fundament .top-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:0 16px;border-top:1.5px solid var(--ink)}
#content .remboo-fundament .top-metrics>div{padding:11px 0;border-bottom:1px solid var(--line)}
#content .remboo-fundament .top-metrics span,#content .remboo-fundament .top-metrics strong{display:block}
#content .remboo-fundament .top-metrics span{min-height:2.5em;color:var(--muted);font-size:.76rem;line-height:1.25}
#content .remboo-fundament .top-metrics strong{margin-top:4px;font-size:.98rem}
#content .remboo-fundament .order{margin:-8px 0 14px;padding:8px 0 8px 12px;border-left:4px solid #FFD500;color:var(--ink);font-weight:720;font-size:.95rem}
#content .remboo-fundament .shopping{margin-top:14px}
#content .remboo-fundament .shopping>.eyebrow{padding:0;color:var(--ink);font-size:.72rem}
#content .remboo-fundament .shopping ul{margin:6px 0 0;padding:0 0 0 18px;color:var(--ink);font-size:.88rem;line-height:1.5}
#content .remboo-fundament .shopping li{margin:0 0 4px}
#content .remboo-fundament .direct-answer{margin:18px 0 8px;padding:0;border:0;background:transparent;color:var(--ink);font-weight:500}
#content .remboo-fundament .warnings{margin-top:14px;padding:10px 12px;border-left:4px solid var(--warn);background:transparent;color:var(--ink);font-size:.8rem}
#content .remboo-fundament .warnings p{margin:0 0 8px}#content .remboo-fundament .warnings p:last-child{margin-bottom:0}
#content .remboo-fundament .actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:20px;padding:16px 0 0;border-top:1px solid var(--line);background:transparent}
#content .remboo-fundament button{min-height:46px;padding:10px 14px;border:1.5px solid var(--ink);border-radius:0;background:var(--paper);color:var(--ink);font-weight:750;cursor:pointer}
#content .remboo-fundament button:hover{background:#FFF3B0}
#content .remboo-fundament button:disabled{opacity:.45;cursor:not-allowed}
#content .remboo-fundament #share-status{min-height:0;margin:8px 0 0;padding:0;color:var(--muted);font-size:.8rem}
#content .remboo-fundament #share-link{width:100%;margin:8px 0 0}
#content .remboo-fundament .noscript{margin:18px 0;padding:14px;border-left:4px solid var(--warn);background:transparent}
#content .remboo-fundament section{margin-top:clamp(42px,7vw,82px)}
#content .remboo-fundament .explanation{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(260px,.65fr);gap:28px;align-items:start;padding:clamp(24px,4vw,42px) 0 0;border-top:1.5px solid var(--ink);border-radius:0;background:transparent}
#content .remboo-fundament .howto-steps{margin:0 0 18px;padding-left:22px}
#content .remboo-fundament .howto-steps li{margin:0 0 10px;padding-left:4px}
#content .remboo-fundament .steps-title{margin:22px 0 10px;font-size:1.15rem}
#content .remboo-fundament .formula-card{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:0;overflow:visible;border:0;border-top:1.5px solid var(--ink);border-radius:0;background:transparent;box-shadow:none}
#content .remboo-fundament .formula-card span,#content .remboo-fundament .formula-card small{display:block;margin:0;padding:12px 8px 12px 0;border-bottom:1px solid var(--line)}
#content .remboo-fundament .formula-card span{font:700 1.02rem/1.35 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--ink)}
#content .remboo-fundament .formula-card small{color:var(--muted);font-size:.78rem;align-self:center}
#content .remboo-fundament .formula-card var{font-style:normal}
#content .remboo-fundament .formula-column{min-width:0}
#content .remboo-fundament .legend{margin:14px 0 0;padding:0 0 4px;border-top:1px solid var(--line)}
#content .remboo-fundament .legend>summary{padding:12px 0;font-weight:760;color:var(--ink);cursor:pointer}
#content .remboo-fundament .legend dl{margin:0 0 8px;display:grid;gap:6px}
#content .remboo-fundament .legend dl>div{display:grid;grid-template-columns:minmax(52px,auto) 1fr;gap:10px;align-items:baseline}
#content .remboo-fundament .legend dt{font:800 .95rem/1.3 ui-monospace,SFMono-Regular,Menlo,monospace}
#content .remboo-fundament .legend dd{margin:0;color:var(--muted);font-size:.9rem;line-height:1.4}
#content .remboo-fundament thead th.no-caps{text-transform:none;letter-spacing:0}
#content .remboo-fundament #frost-reference{margin-top:clamp(28px,4vw,48px)}
#content .remboo-fundament .sources>p{max-width:860px}
#content .remboo-fundament .faq{max-width:900px}
#content .remboo-fundament .faq details{padding:0;border-top:1px solid var(--line)}
#content .remboo-fundament .faq summary{position:relative;padding:17px 42px 17px 0;font-weight:760;cursor:pointer;list-style:none}
#content .remboo-fundament .faq summary::-webkit-details-marker{display:none}
#content .remboo-fundament .faq summary::after{content:"+";position:absolute;right:8px;top:13px;color:var(--ink);font-size:1.45rem;font-weight:400}
#content .remboo-fundament .faq details[open] summary::after{content:"−"}
#content .remboo-fundament .faq details p{max-width:780px;margin:-3px 0 18px;color:var(--muted)}
#content .remboo-fundament .sources{padding-top:28px;border-top:1.5px solid var(--ink)}
#content .remboo-fundament .sources ul{padding-left:21px}
#content .remboo-fundament .sources li{margin:7px 0}
#content .remboo-fundament .sources a{color:var(--ink);text-underline-offset:2px;overflow-wrap:anywhere;word-break:break-word}
#content .remboo-fundament .note-not-source{padding:10px 0 10px 12px;border-left:4px solid var(--ink);background:transparent;color:var(--ink);font-size:.86rem}
@media (max-width:900px){
  #content .remboo-fundament .workspace{grid-template-columns:1fr}
  #content .remboo-fundament aside{position:static}
  #content .remboo-fundament .explanation{grid-template-columns:1fr}
}
@media (max-width:560px){
  #content .remboo-fundament .calc-shell{padding:15px}
  #content .remboo-fundament form{padding:17px}
  #content .remboo-fundament .field-grid,#content .remboo-fundament .field-grid-3{grid-template-columns:1fr;gap:0}
  #content .remboo-fundament .top-metrics{grid-template-columns:1fr}
  #content .remboo-fundament .top-metrics span{min-height:0}
  #content .remboo-fundament .actions{grid-template-columns:1fr}
  #content .remboo-fundament .explanation{padding:20px 0 0}
}
#content .remboo-fundament fieldset{margin:0;padding:0;border:0}
/* Режим «Нарисовать план» (волна Г): план — редактор rb-plan в карточке, сечение — отдельная
   узкая фигура; при ошибке контура в карточке остаётся только редактор, иначе его нечем править */
#content .remboo-fundament .plan-note .hint{margin:0 0 10px}
#content .remboo-fundament .plan-summary{font-variant-numeric:tabular-nums}
#content .remboo-fundament #calc-output .layout--section>svg.rb-scheme{width:auto;max-width:280px;margin:0 auto}
#content .remboo-fundament .result-card.is-plan-error #calc-output>:not(#plan){display:none}
/* Панель редактора (пресеты, отмена, подсказка) на бумаге не нужна — и в клоне карточки
   внутри печатного листа, куда правило rb-calc.css с #content не достаёт */
@media print{.rb-plan__bar,.plan-caption-hint{display:none!important}}
#content .remboo-fundament .mode-block{margin-top:4px}
#content .remboo-fundament .table-filter{max-width:420px;margin:14px 0 6px}
#content .remboo-fundament .table-scroll{overflow-x:auto;margin:10px 0 18px;border:1px solid var(--line);border-radius:0}
#content .remboo-fundament table{width:100%;min-width:480px;border-collapse:collapse;background:var(--paper);font-size:.92rem}
#content .remboo-fundament th,#content .remboo-fundament td{padding:11px 14px;border-top:1px solid var(--line);text-align:left}
#content .remboo-fundament thead th{background:transparent;border-bottom:1.5px solid var(--ink);color:var(--ink);font-size:.78rem;text-transform:uppercase;letter-spacing:.04em}
#content .remboo-fundament tbody th{font-weight:800}
#content .remboo-fundament tbody tr:hover{background:#FFF3B0}
#content .remboo-fundament .norm-table{margin:0;border-top:1px solid var(--line)}
#content .remboo-fundament .norm-table>summary{display:flex;flex-wrap:wrap;gap:6px 12px;align-items:baseline;padding:16px 36px 16px 0;position:relative;font-weight:760;cursor:pointer;list-style:none}
#content .remboo-fundament .norm-table>summary::-webkit-details-marker{display:none}
#content .remboo-fundament .norm-table>summary span{color:var(--muted);font-size:.84rem;font-weight:500}
#content .remboo-fundament .norm-table>summary::after{content:"+";position:absolute;right:8px;top:11px;color:var(--ink);font-size:1.45rem;font-weight:400}
#content .remboo-fundament .norm-table[open]>summary::after{content:"−"}
#content .remboo-fundament .norm-table .hint{margin:0 0 6px}