/* Калькулятор бетона — мир темы «Чертёж». Общий слой переопределяет --line на чернила,
   поэтому серые линейки здесь идут через --rule (gray-2): белый лист, чернильные линии, жёлтый
   маркер только у главного. Общий слой _shared/rb-calc.css задаёт селекты, плитки,
   справку, чекбоксы, буквы формул и схему (.rb-scheme); здесь — раскладка и то, что
   есть только у этой страницы (материалы, доли по массе, сравнение цен, три источника). */
#content .remboo-beton{
  --ink:#111;--muted:#5A5A56;--line:#E8E8E5;--rule:#E8E8E5;--line-ink:#111;--border:#BDBDB8;--paper:#fff;--panel:#F5F5F3;
  --accent:#FFD500;--accent-soft:#FFF3B0;--accent-dark:#111;--blue:#111;--danger:#B23A0C;--warn:#FF5A1F;
  clear:both;width:100%;color:var(--ink);font:400 16px/1.55 system-ui,-apple-system,"Segoe UI",sans-serif;
}
#content .remboo-beton *{box-sizing:border-box}
#content .remboo-beton [hidden]{display:none!important}
#content .remboo-beton .calc-shell{max-width:1180px;margin:0 auto;padding:clamp(16px,3vw,42px);background:var(--paper)}
#content .remboo-beton .calc-intro{max-width:760px;margin:0 0 28px}
#content .remboo-beton .eyebrow{margin:0 0 6px;color:var(--ink);font-size:.78rem;font-weight:800;letter-spacing:.11em;text-transform:uppercase}
#content .remboo-beton .calculator-title,#content .remboo-beton h2,#content .remboo-beton h3{color:var(--ink);font-weight:760;letter-spacing:-.025em}
#content .remboo-beton .calculator-title{margin:0 0 8px;font-size:clamp(2rem,5vw,3.6rem);line-height:1.04}
#content .remboo-beton h2{margin:0 0 16px;font-size:clamp(1.55rem,3vw,2.25rem);line-height:1.15}
#content .remboo-beton h3{margin:0;font-size:1.08rem;line-height:1.25}
#content .remboo-beton p{margin:0 0 14px}
#content .remboo-beton .calc-intro>p:last-child{color:var(--muted);font-size:1.08rem}
#content .remboo-beton .workspace{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(360px,.92fr);gap:24px;align-items:start}
#content .remboo-beton form{min-width:0;padding:0;border:0;background:transparent}
#content .remboo-beton .section-title{display:flex;align-items:center;gap:12px;margin:4px 0 16px;padding-top:20px;border-top:1px solid var(--rule)}
#content .remboo-beton .section-title:first-child{padding-top:0;border-top:0}
#content .remboo-beton label{display:block;margin:0 0 15px;color:var(--ink);font-size:.93rem;font-weight:700}
#content .remboo-beton input,#content .remboo-beton select,#content .remboo-beton button{font:inherit}
#content .remboo-beton input,#content .remboo-beton select{width:100%;min-height:48px;margin-top:6px;padding:10px 12px;border:1px solid var(--border);border-radius:0;background:#fff;color:var(--ink);font-size:1rem;box-shadow:none}
#content .remboo-beton input:focus,#content .remboo-beton select:focus,#content .remboo-beton button:focus-visible,#content .remboo-beton summary:focus-visible,#content .remboo-beton .table-scroll:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-color:var(--ink)}
#content .remboo-beton input:disabled,#content .remboo-beton select:disabled{background:var(--panel);color:#767671}
#content .remboo-beton input[aria-invalid="true"]{border-color:var(--danger)}
#content .remboo-beton small,#content .remboo-beton .hint{display:block;margin-top:5px;color:var(--muted);font-size:.84rem;font-weight:400;line-height:1.45}
#content .remboo-beton .field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
#content .remboo-beton #custom-parts{margin:-4px 0 12px;padding:12px 14px 0;border-left:2px solid var(--ink)}
#content .remboo-beton .check{margin:4px 0 6px;font-weight:650}
#content .remboo-beton .check-hint{margin:0 0 14px}
#content .remboo-beton details{border-top:1px solid var(--rule)}
#content .remboo-beton details summary{cursor:pointer;list-style:none}
#content .remboo-beton details summary::-webkit-details-marker{display:none}
#content .remboo-beton .cost-fields{margin-top:18px;padding-top:15px}
#content .remboo-calculator.remboo-beton .cost-fields>summary{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:6px 12px;align-items:baseline;font-weight:800}
#content .remboo-beton .cost-fields>summary::after{content:"+";color:var(--ink);font-size:1.3rem;line-height:1;font-weight:400}
#content .remboo-beton .cost-fields[open]>summary::after{content:"−"}
#content .remboo-beton .cost-fields>summary span{color:var(--muted);font-size:.8rem;font-weight:500}
#content .remboo-beton .cost-fields .hint{margin:12px 0}

/* Результат: белая карточка, чернильная рамка */
#content .remboo-beton aside{position:sticky;top:18px;min-width:0}
#content .remboo-beton .result-card{overflow:visible;border:1.5px solid var(--line-ink);border-radius:0;background:var(--paper);color:var(--ink);padding:22px 24px}
#content .remboo-beton .result-card>.eyebrow{padding:0}
#content .remboo-beton #calc-error{margin:0 0 20px;padding:0 0 0 14px;border-left:4px solid var(--warn);color:var(--danger);font-weight:700}
#content .remboo-beton #calc-output{padding:0}
#content .remboo-beton .primary-result{display:flex;flex-direction:column;padding:2px 0 18px}
#content .remboo-beton .primary-result strong{font-size:clamp(2.25rem,6vw,4rem);line-height:1.05;letter-spacing:-.045em}
#content .remboo-beton .primary-result span{margin-top:4px;color:var(--muted);font-size:.86rem}
#content .remboo-beton .top-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1.5px solid var(--line-ink);border-bottom:1px solid var(--rule)}
#content .remboo-beton .top-metrics>div{padding:12px 12px 12px 0;border-right:1px solid var(--rule)}
#content .remboo-beton .top-metrics>div:last-child{border-right:0}
#content .remboo-beton .top-metrics>div+div{padding-left:12px}
#content .remboo-beton .top-metrics span,#content .remboo-beton .top-metrics strong{display:block}
#content .remboo-beton .top-metrics span{min-height:2.5em;color:var(--muted);font-size:.76rem;line-height:1.25}
#content .remboo-beton .top-metrics strong{margin-top:4px;font-size:1rem;font-variant-numeric:tabular-nums}
#content .remboo-beton .direct-answer{margin:18px 0;padding:0;border:0;background:transparent;color:var(--ink);font-weight:500}
/* Материалы для замеса: четыре строки в линейку, без плиток и пиктограмм */
#content .remboo-beton .materials{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:16px}
#content .remboo-beton .materials article{display:flex;gap:10px;min-width:0;padding:12px 14px;border:1px solid var(--rule);border-radius:0;background:#fff}
#content .remboo-beton .materials div{min-width:0}
#content .remboo-beton .materials small,#content .remboo-beton .materials strong,#content .remboo-beton .materials div>span{display:block;margin:0}
#content .remboo-beton .materials small{color:var(--muted);font-size:.76rem;text-transform:uppercase;letter-spacing:.05em}
#content .remboo-beton .materials strong{margin-top:2px;font-size:1.12rem;font-variant-numeric:tabular-nums}
#content .remboo-beton .materials div>span{overflow-wrap:anywhere;color:var(--muted);font-size:.78rem;line-height:1.35}
/* Доли по массе: серая дорожка, чернильная доля */
#content .remboo-beton .mix-chart{margin-top:16px}
#content .remboo-beton .mix-chart-title{margin:0 0 4px;color:var(--muted);font-size:.76rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase}
#content .remboo-beton .mix-chart>div{display:grid;grid-template-columns:62px 1fr 116px;gap:8px;align-items:center;margin:7px 0;font-size:.76rem}
#content .remboo-beton .mix-chart>div>span{color:var(--muted)}
#content .remboo-beton .mix-chart i{display:block;overflow:hidden;height:6px;background:var(--rule)}
#content .remboo-beton .mix-chart b{display:block;height:100%;min-width:2px;background:var(--ink);transition:width .18s ease}
#content .remboo-beton .mix-chart strong{text-align:right;font-size:.76rem;font-variant-numeric:tabular-nums;white-space:nowrap}
#content .remboo-beton .per-m3{margin:14px 0 0;font-size:.8rem;line-height:1.45}
#content .remboo-beton .cost-invite{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;margin:12px 0 0;color:var(--muted);font-size:.82rem}
#content .remboo-beton .cost-invite button{min-height:40px;margin:0;padding:6px 14px;border:1.5px solid var(--ink);border-radius:0;background:transparent;color:var(--ink);font-size:.82rem;font-weight:750;cursor:pointer}
#content .remboo-beton .cost-comparison{display:grid;grid-template-columns:1fr 1fr;gap:0 20px;margin-top:16px}
#content .remboo-beton .cost-comparison>div{padding:10px 0;border-bottom:1px solid var(--rule)}
#content .remboo-beton .cost-comparison span,#content .remboo-beton .cost-comparison strong{display:block}
#content .remboo-beton .cost-comparison span{color:var(--muted);font-size:.76rem}
#content .remboo-beton .cost-comparison strong{margin-top:4px;font-size:.92rem;font-variant-numeric:tabular-nums}
#content .remboo-beton .warnings{display:grid;gap:8px;margin-top:14px;padding:4px 0 4px 14px;border-left:4px solid var(--warn);color:var(--ink);font-size:.86rem}
#content .remboo-beton .warnings p{margin:0}
#content .remboo-beton .actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:20px;padding:0;background:transparent}
#content .remboo-beton button{min-height:46px;padding:10px 14px;border:1.5px solid var(--ink);border-radius:0;background:transparent;color:var(--ink);font-weight:750;cursor:pointer}
#content .remboo-beton button:disabled{opacity:.45;cursor:not-allowed}
#content .remboo-beton #share-status{min-height:0;margin:8px 0 0;padding:0;color:var(--muted);font-size:.8rem}
#content .remboo-beton #share-link{width:100%;margin:8px 0 0}
#content .remboo-beton .article-link{display:flex;justify-content:space-between;margin-top:10px;padding:14px 16px;border:1px solid var(--rule);border-radius:0;color:var(--ink)!important;font-weight:750;text-decoration:none!important}
#content .remboo-beton .article-link:hover{border-color:var(--ink)}
#content .remboo-beton .noscript{margin:18px 0;padding:14px;border:1px solid var(--rule)}

/* Прозрачный расчёт: шаги, пример, формулы, легенда */
#content .remboo-beton section{margin-top:clamp(42px,7vw,82px)}
#content .remboo-beton .explanation{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.9fr);gap:28px;align-items:start;padding:clamp(24px,4vw,42px) 0;border-top:1.5px solid var(--line-ink);background:transparent}
#content .remboo-beton .explanation h3{margin:18px 0 10px;font-size:1rem}
#content .remboo-beton .howto-steps{margin:0 0 18px;padding-left:22px}
#content .remboo-beton .howto-steps li{margin:0 0 10px;padding-left:4px}
#content .remboo-beton .formula-card{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:0;overflow:visible;border:1.5px solid var(--line-ink);border-radius:0;background:#fff}
#content .remboo-beton .formula-card span,#content .remboo-beton .formula-card small{display:flex;align-items:center;min-width:0;margin:0;padding:14px 16px;border-bottom:1px solid var(--rule);white-space:normal;overflow-wrap:anywhere}
#content .remboo-beton .formula-card span{font-size:.92rem;font-weight:700;line-height:1.3;font-variant-numeric:tabular-nums}
#content .remboo-beton .formula-card small{color:var(--muted);font-size:.78rem}
#content .remboo-beton .formula-card var{font-style:normal}
#content .remboo-beton .formula-card span:nth-last-of-type(1),#content .remboo-beton .formula-card small:last-child{border-bottom:0}
#content .remboo-beton .legend{margin:14px 0 0;padding:0 0 4px;border-top:1px solid var(--rule)}
#content .remboo-beton .legend>summary{position:relative;padding:12px 36px 12px 0;font-weight:760;color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
#content .remboo-beton .legend>summary::after{content:"+";position:absolute;right:8px;top:7px;color:var(--ink);font-size:1.45rem;font-weight:400}
#content .remboo-beton .legend[open]>summary::after{content:"−"}
#content .remboo-beton .legend dl{margin:0 0 8px;display:grid;gap:6px}
#content .remboo-beton .legend dl>div{display:grid;grid-template-columns:minmax(52px,auto) 1fr;gap:10px;align-items:baseline}
#content .remboo-beton .legend dt{margin:0;font-size:.95rem;font-weight:800;line-height:1.3}
#content .remboo-beton .legend dd{margin:0;color:var(--muted);font-size:.9rem;line-height:1.4}
#content .remboo-beton .explanation>div>.hint{margin-top:12px}

/* Справочник, FAQ, источники */
#content .remboo-beton .reference>p:not(.eyebrow),#content .remboo-beton .sources>p{max-width:860px}
#content .remboo-beton .table-scroll{overflow-x:auto;margin:18px 0;border:1px solid var(--rule)}
#content .remboo-beton table{width:100%;min-width:0;border-collapse:collapse;background:#fff;font-size:.92rem}
#content .remboo-beton caption{padding:14px;text-align:left;color:var(--muted);font-size:.82rem;font-weight:700}
#content .remboo-beton th,#content .remboo-beton td{padding:12px 14px;border-top:1px solid var(--rule);text-align:left;white-space:nowrap;overflow-wrap:normal;word-break:normal;hyphens:manual}
#content .remboo-beton thead th{background:transparent;border-bottom:1.5px solid var(--line-ink);color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.04em}
#content .remboo-beton tbody th{font-weight:800;white-space:nowrap}
#content .remboo-beton tbody tr:hover{background:var(--panel)}
#content .remboo-beton .source-comparison{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 24px;margin-top:24px;border-top:1.5px solid var(--line-ink)}
#content .remboo-beton .source-comparison article{padding:18px 0;border:0;border-bottom:1px solid var(--rule);border-radius:0}
#content .remboo-beton .source-comparison h3{margin-bottom:8px}
#content .remboo-beton .source-comparison p:last-child{margin:0;color:var(--muted)}
#content .remboo-beton .faq{max-width:900px}
#content .remboo-beton .faq details{padding:0}
#content .remboo-beton .faq summary{position:relative;padding:17px 42px 17px 0;font-weight:760}
#content .remboo-beton .faq summary::after{content:"+";position:absolute;right:8px;top:13px;color:var(--ink);font-size:1.45rem;font-weight:400}
#content .remboo-beton .faq details[open] summary::after{content:"−"}
#content .remboo-beton .faq details p{max-width:780px;margin:-3px 0 18px;color:var(--muted)}
#content .remboo-beton .sources{padding-top:28px;border-top:2px solid var(--ink)}
#content .remboo-beton .sources ul{padding-left:21px}
#content .remboo-beton .sources li{margin:7px 0}
#content .remboo-beton .sources a{color:var(--ink);text-underline-offset:2px;overflow-wrap:anywhere;word-break:break-word}

@media (max-width:900px){
  #content .remboo-beton .workspace{grid-template-columns:1fr}
  #content .remboo-beton aside{position:static}
  #content .remboo-beton .explanation{grid-template-columns:1fr}
  #content .remboo-beton .source-comparison{grid-template-columns:1fr}
}
@media (max-width:560px){
  #content .remboo-beton .calc-shell{padding:16px}
  #content .remboo-beton .field-grid{grid-template-columns:minmax(0,1fr);gap:0}
  #content .remboo-beton #custom-parts{margin-bottom:8px}
  #content .remboo-beton .top-metrics{grid-template-columns:1fr}
  #content .remboo-beton .top-metrics>div{padding:12px 0;border-right:0;border-bottom:1px solid var(--rule)}
  #content .remboo-beton .top-metrics>div:last-child{border-bottom:0}
  #content .remboo-beton .top-metrics>div+div{padding-left:0}
  #content .remboo-beton .top-metrics span{min-height:0}
  #content .remboo-beton .materials{grid-template-columns:1fr}
  #content .remboo-beton .mix-chart>div{grid-template-columns:50px 1fr auto;gap:6px}
  #content .remboo-beton .mix-chart strong{font-size:.7rem}
  #content .remboo-beton .cost-comparison{grid-template-columns:1fr}
  #content .remboo-beton .actions{grid-template-columns:1fr}
  #content .remboo-beton .explanation{padding:20px 0}
  #content .remboo-beton .formula-card{grid-template-columns:1fr}
}
@media (max-width:400px){
  #content .remboo-calculator.remboo-beton .cost-fields>summary{grid-template-columns:auto auto}
  #content .remboo-calculator.remboo-beton .cost-fields>summary span{grid-column:1/-1}
}
@media (prefers-reduced-motion:reduce){#content .remboo-beton .mix-chart b{transition:none}}
/* Печатный лист (общий rb-print.mjs клонирует карточку результата; состав, доли по массе и сравнение цен — блоки этой страницы) */
@media print{
  #rb-print .materials{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:2mm 4mm;margin:2mm 0 3mm}
  #rb-print .materials article>div{border-top:1px solid #111;padding-top:1mm}
  #rb-print .materials small{display:block;font-size:8pt;color:#5A5A56}
  #rb-print .materials strong{display:block;font-size:12pt;font-weight:700;line-height:1.2}
  #rb-print .materials span{display:block;font-size:8pt;color:#333}
  #rb-print .mix-chart{margin:2mm 0;break-inside:avoid}
  #rb-print .mix-chart-title{font-size:8pt;letter-spacing:.06em;text-transform:uppercase;color:#5A5A56;margin:0 0 1mm}
  #rb-print .mix-chart>div{display:grid;grid-template-columns:20mm 1fr 48mm;align-items:center;gap:0 3mm;padding:.6mm 0;font-size:9pt}
  #rb-print .mix-chart i{display:block;height:2.4mm;background:#EDEDEA;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  #rb-print .mix-chart b{display:block;height:100%;background:#111;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  #rb-print .per-m3{font-size:9pt;color:#333}
  #rb-print .cost-comparison{display:grid;grid-template-columns:1fr 1fr;gap:2mm 4mm;margin:2mm 0 3mm;break-inside:avoid}
  #rb-print .cost-comparison>div{border-top:1px solid #111;padding-top:1mm}
  #rb-print .cost-comparison span{display:block;font-size:8pt;color:#5A5A56}
  #rb-print .cost-comparison strong{display:block;font-size:12pt;font-weight:700}
}