/* Запасной шрифт с размерами Onest: пока Onest грузится, текст не прыгает (CLS). */
@font-face{font-family:"Onest Fallback";src:local("Arial"),local("ArialMT");font-weight:100 500;size-adjust:103.08%;ascent-override:94.1%;descent-override:29.59%;line-gap-override:0%}
/* жирный Onest по ширине почти как Arial Bold (0,999): без него до загрузки шрифта заголовок переносился иначе и страница прыгала */
@font-face{font-family:"Onest Fallback";src:local("Arial Bold"),local("Arial-BoldMT");font-weight:600 800;size-adjust:99.6%;ascent-override:97.4%;descent-override:30.6%;line-gap-override:0%}
/* Сортамент — общий стиль внутренних страниц: /sortament/, /gost/, документы, 404, планер.
   Разметку генератора не меняет — перекрашивает его классы (topbar, answer, kpi, tw, calc, card…).
   Главная (/) стилизована отдельно, у неё свой встроенный CSS. */

/* ============ Токены — те же, что на главной ============ */
:root{
  --ground:#ECEEF1; --surface:#FFFFFF; --surface-2:#F4F5F7; --surface-3:#E4E7EB;
  --ink:#1B1F24; --ink-2:#4E5663; --muted:#626974; --field:#8A919C; --line:#D5D9DF; --line-2:#E5E8EC; --line-strong:#B9C0C9;
  --paint:#FFC21C; --paint-ink:#1B1F24; --paint-text:#8A5F00; --paint-soft:#FFF2C9;
  --mark-bg:#1B1F24; --mark-fg:#FFC21C; --focus:#1B1F24; --draw:#1B1F24; --draw-2:#5B6370;
  --shadow-1:0 1px 2px rgba(27,31,36,.06); --shadow-2:0 18px 40px -22px rgba(27,31,36,.45);
  --f-display:"Tektur","Onest","Onest Fallback",system-ui,sans-serif;
  --f-ui:"Onest","Onest Fallback",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --f-draw:"Fira Sans Condensed","Arial Narrow",Arial,sans-serif;
  /* старые имена — ими пользуются inline-стили страниц и планер */
  --bg:var(--ground); --panel:var(--surface); --panel2:var(--surface-2); --mut:var(--muted); --line2:var(--line-2);
  --vio:#1B1F24; --vio2:#2E353F; --vioSoft:var(--paint-soft); --vioBd:var(--line-strong);
  --grn:#1D7F46; --amb:#B45309; --blu:#1D4ED8; --radius:14px; --shadow:var(--shadow-2); --fb:var(--f-ui);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ground:#121518; --surface:#1A1E23; --surface-2:#20252B; --surface-3:#2A3037;
    --ink:#E8EAED; --ink-2:#B1B8C2; --muted:#8C94A0; --field:#666E7A; --line:#2F353D; --line-2:#252A31; --line-strong:#454D57;
    --paint-ink:#15181B; --paint-text:#FFD35C; --paint-soft:rgba(255,194,28,.14);
    --mark-bg:#FFC21C; --mark-fg:#15181B; --focus:#FFC21C; --draw:#E8EAED; --draw-2:#9AA2AD;
    --shadow-1:0 1px 2px rgba(0,0,0,.35); --shadow-2:0 18px 44px -22px rgba(0,0,0,.8);
    --vio:#3B424C; --vio2:#4B5360; --grn:#47BE79; --amb:#FBBF24; --blu:#60A5FA;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --ground:#121518; --surface:#1A1E23; --surface-2:#20252B; --surface-3:#2A3037;
  --ink:#E8EAED; --ink-2:#B1B8C2; --muted:#8C94A0; --field:#666E7A; --line:#2F353D; --line-2:#252A31; --line-strong:#454D57;
  --paint-ink:#15181B; --paint-text:#FFD35C; --paint-soft:rgba(255,194,28,.14);
  --mark-bg:#FFC21C; --mark-fg:#15181B; --focus:#FFC21C; --draw:#E8EAED; --draw-2:#9AA2AD;
  --shadow-1:0 1px 2px rgba(0,0,0,.35); --shadow-2:0 18px 44px -22px rgba(0,0,0,.8);
  --vio:#3B424C; --vio2:#4B5360; --grn:#47BE79; --amb:#FBBF24; --blu:#60A5FA;
  color-scheme:dark;
}

/* ============ Иконка вида проката — по адресу страницы (canonical) ============ */
html:has(link[rel="canonical"][href*="/sortament/shveller/"]),html:has(link[rel="canonical"][href*="gost-8240-97"]){--pi:url(/assets/img/profiles/channel.webp)}
html:has(link[rel="canonical"][href*="/sortament/dvutavr/"]),html:has(link[rel="canonical"][href*="gost-35087-2024"]),html:has(link[rel="canonical"][href*="gost-26020-83"]),html:has(link[rel="canonical"][href*="gost-8239-89"]){--pi:url(/assets/img/profiles/beam.webp)}
html:has(link[rel="canonical"][href*="/sortament/ugolok/"]),html:has(link[rel="canonical"][href*="gost-8509-93"]),html:has(link[rel="canonical"][href*="gost-8510-86"]){--pi:url(/assets/img/profiles/angle.webp)}
html:has(link[rel="canonical"][href*="/sortament/truba-kvadratnaya/"]),html:has(link[rel="canonical"][href*="gost-30245-2003"]){--pi:url(/assets/img/profiles/tubeSq.webp)}
html:has(link[rel="canonical"][href*="/sortament/truba-pryamougolnaya/"]){--pi:url(/assets/img/profiles/tubeRect.webp)}
html:has(link[rel="canonical"][href*="/sortament/truba-kruglaya/"]),html:has(link[rel="canonical"][href*="gost-32528-2013"]){--pi:url(/assets/img/profiles/tubeRound.webp)}
html:has(link[rel="canonical"][href*="/sortament/armatura/"]),html:has(link[rel="canonical"][href*="gost-34028-2016"]),html:has(link[rel="canonical"][href*="gost-5781-82"]){--pi:url(/assets/img/profiles/rebar.webp)}
html:has(link[rel="canonical"][href*="/sortament/list/"]),html:has(link[rel="canonical"][href*="gost-19903-2015"]){--pi:url(/assets/img/profiles/plate.webp)}

/* ============ База ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--ground);color:var(--ink);font:400 15.5px/1.6 var(--f-ui);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--line-strong);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{text-decoration-color:currentColor}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:6px}
h1{font:700 clamp(26px,3.5vw,38px)/1.14 var(--f-ui);letter-spacing:-.02em;margin:0 0 14px;text-wrap:balance}
h2{font:650 clamp(19px,2.2vw,23px)/1.28 var(--f-ui);letter-spacing:-.01em;margin:36px 0 12px;text-wrap:balance}
h3{font-size:16.5px;font-weight:650;line-height:1.35;margin:24px 0 8px}
h4{font-size:15px;font-weight:650;margin:18px 0 6px}
p{margin:0 0 12px}
b,strong{font-weight:650}
hr{border:0;border-top:1px solid var(--line);margin:28px 0}
code{font-size:.92em;background:var(--surface-2);border:1px solid var(--line-2);border-radius:6px;padding:1px 5px}
img{max-width:100%}
.skip{position:absolute;left:-9999px;top:0;z-index:99;background:var(--ink);color:var(--surface);padding:9px 14px;border-radius:9px;text-decoration:none}
.skip:focus{left:12px;top:12px}

/* ============ Шапка — как на главной: та же ширина, разделы, поиск, спецификация, тема ============ */
.topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:14px;min-height:63px;
  padding:0 max(20px,calc((100% - 1480px)/2 + 20px));background:var(--ground);border-bottom:1px solid var(--line-2)}
.tb-brand{display:flex;align-items:center;font-size:0;color:var(--ink);text-decoration:none;flex:none}
/* логотип «Бирка»: знак — картинкой, надпись — маской (цвет из темы); текст «Сортамент» остаётся для читалок */
.tb-logo{width:33.8px;height:30px;flex:none;background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2044%2039%22%3E%3Cg%20transform%3D%22translate(1%201)%22%3E%3Cg%20transform%3D%22rotate(-9%2020%2013.5)%20translate(0%204)%22%3E%3Cpath%20d%3D%22M8%200H37a3%203%200%200%201%203%203V24a3%203%200%200%201-3%203H8L0%2013.5zM6%2013.5a2.6%202.6%200%201%200%205.2%200a2.6%202.6%200%201%200-5.2%200z%22%20fill%3D%22%23FFC21C%22%20fill-rule%3D%22evenodd%22%2F%3E%3Cpath%20d%3D%22M17%205L28%205L28%208.8L20.6%208.8L20.6%2018.2L28%2018.2L28%2022L17%2022Z%22%20fill%3D%22%231B1F24%22%2F%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E") left center/contain no-repeat}
.tb-logo svg{display:none}
.tb-brand::after{content:"";flex:none;width:116.1px;height:30px;margin-left:8.5px;background:var(--ink);
  -webkit-mask:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20150.88%2039%22%3E%3Cpath%20transform%3D%22translate(-0.37%2030.83)%22%20d%3D%22M8.01%200.31Q5.49%200.31%204.02-0.64Q2.55-1.60%201.96-3.29Q1.37-4.98%201.37-7.22L1.37-15.37Q1.37-17.72%201.96-19.42Q2.55-21.11%204.02-22.04Q5.49-22.96%208.01-22.96Q10.44-22.96%2011.83-22.15Q13.22-21.34%2013.79-19.85Q14.36-18.37%2014.36-16.41L14.36-14.50L9.88-14.50L9.88-16.63Q9.88-17.42%209.80-18.10Q9.72-18.79%209.34-19.22Q8.96-19.66%208.04-19.66Q7.11-19.66%206.69-19.21Q6.27-18.76%206.16-18.05Q6.05-17.33%206.05-16.46L6.05-6.16Q6.05-5.21%206.20-4.49Q6.36-3.78%206.79-3.40Q7.22-3.02%208.04-3.02Q8.93-3.02%209.31-3.46Q9.69-3.89%209.79-4.62Q9.88-5.35%209.88-6.16L9.88-8.37L14.36-8.37L14.36-6.50Q14.36-4.51%2013.80-2.98Q13.24-1.46%2011.87-0.57Q10.50%200.31%208.01%200.31M25.62%200.31Q23.13%200.31%2021.67-0.59Q20.22-1.48%2019.59-3.15Q18.96-4.82%2018.96-7.14L18.96-15.60Q18.96-17.92%2019.59-19.57Q20.22-21.22%2021.67-22.09Q23.13-22.96%2025.62-22.96Q28.14-22.96%2029.61-22.08Q31.08-21.20%2031.71-19.56Q32.34-17.92%2032.34-15.60L32.34-7.14Q32.34-4.82%2031.71-3.15Q31.08-1.48%2029.61-0.59Q28.14%200.31%2025.62%200.31M25.62-3.02Q26.52-3.02%2026.94-3.43Q27.36-3.84%2027.50-4.52Q27.64-5.21%2027.64-5.99L27.64-16.72Q27.64-17.50%2027.50-18.17Q27.36-18.84%2026.94-19.25Q26.52-19.66%2025.62-19.66Q24.78-19.66%2024.36-19.25Q23.94-18.84%2023.80-18.17Q23.66-17.50%2023.66-16.72L23.66-5.99Q23.66-5.21%2023.79-4.52Q23.91-3.84%2024.33-3.43Q24.75-3.02%2025.62-3.02M42.14%200L37.52%200L37.52-22.68L44.72-22.68Q46.76-22.68%2048.05-21.91Q49.34-21.14%2049.97-19.68Q50.60-18.23%2050.60-16.16Q50.60-13.72%2049.77-12.35Q48.94-10.98%2047.52-10.40Q46.09-9.83%2044.24-9.83L42.14-9.83L42.14%200M42.14-19.43L42.14-13.08L43.76-13.08Q44.77-13.08%2045.32-13.40Q45.86-13.72%2046.06-14.42Q46.26-15.12%2046.26-16.21Q46.26-17.25%2046.10-17.95Q45.95-18.65%2045.42-19.04Q44.88-19.43%2043.74-19.43M61.85%200L57.20%200L57.20-19.24L53.70-19.24L53.70-22.68L65.30-22.68L65.30-19.24L61.85-19.24M71.43%200L67.09%200L71.48-22.68L76.61-22.68L80.98%200L76.69%200L75.88-4.98L72.30-4.98L71.43%200M74.06-16.97L72.72-7.81L75.43-7.81M88.68%200L85.29%200L85.68-22.68L90.58-22.68L93.38-8.37L96.38-22.68L101.11-22.68L101.50%200L98.14%200L97.78-15.37L94.89%200L92.01%200L88.98-15.48M116.87%200L106.93%200L106.93-22.68L116.82-22.68L116.82-19.49L111.55-19.49L111.55-13.47L115.61-13.47L115.61-10.25L111.55-10.25L111.55-3.14L116.87-3.14M125.97%200L121.35%200L121.35-22.68L125.97-22.68L125.97-13.36L129.98-13.36L129.98-22.68L134.60-22.68L134.60%200L129.98%200L129.98-10.05L125.97-10.05M146.80%200L142.16%200L142.16-19.24L138.66-19.24L138.66-22.68L150.25-22.68L150.25-19.24L146.80-19.24%22%2F%3E%3C%2Fsvg%3E") left center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20150.88%2039%22%3E%3Cpath%20transform%3D%22translate(-0.37%2030.83)%22%20d%3D%22M8.01%200.31Q5.49%200.31%204.02-0.64Q2.55-1.60%201.96-3.29Q1.37-4.98%201.37-7.22L1.37-15.37Q1.37-17.72%201.96-19.42Q2.55-21.11%204.02-22.04Q5.49-22.96%208.01-22.96Q10.44-22.96%2011.83-22.15Q13.22-21.34%2013.79-19.85Q14.36-18.37%2014.36-16.41L14.36-14.50L9.88-14.50L9.88-16.63Q9.88-17.42%209.80-18.10Q9.72-18.79%209.34-19.22Q8.96-19.66%208.04-19.66Q7.11-19.66%206.69-19.21Q6.27-18.76%206.16-18.05Q6.05-17.33%206.05-16.46L6.05-6.16Q6.05-5.21%206.20-4.49Q6.36-3.78%206.79-3.40Q7.22-3.02%208.04-3.02Q8.93-3.02%209.31-3.46Q9.69-3.89%209.79-4.62Q9.88-5.35%209.88-6.16L9.88-8.37L14.36-8.37L14.36-6.50Q14.36-4.51%2013.80-2.98Q13.24-1.46%2011.87-0.57Q10.50%200.31%208.01%200.31M25.62%200.31Q23.13%200.31%2021.67-0.59Q20.22-1.48%2019.59-3.15Q18.96-4.82%2018.96-7.14L18.96-15.60Q18.96-17.92%2019.59-19.57Q20.22-21.22%2021.67-22.09Q23.13-22.96%2025.62-22.96Q28.14-22.96%2029.61-22.08Q31.08-21.20%2031.71-19.56Q32.34-17.92%2032.34-15.60L32.34-7.14Q32.34-4.82%2031.71-3.15Q31.08-1.48%2029.61-0.59Q28.14%200.31%2025.62%200.31M25.62-3.02Q26.52-3.02%2026.94-3.43Q27.36-3.84%2027.50-4.52Q27.64-5.21%2027.64-5.99L27.64-16.72Q27.64-17.50%2027.50-18.17Q27.36-18.84%2026.94-19.25Q26.52-19.66%2025.62-19.66Q24.78-19.66%2024.36-19.25Q23.94-18.84%2023.80-18.17Q23.66-17.50%2023.66-16.72L23.66-5.99Q23.66-5.21%2023.79-4.52Q23.91-3.84%2024.33-3.43Q24.75-3.02%2025.62-3.02M42.14%200L37.52%200L37.52-22.68L44.72-22.68Q46.76-22.68%2048.05-21.91Q49.34-21.14%2049.97-19.68Q50.60-18.23%2050.60-16.16Q50.60-13.72%2049.77-12.35Q48.94-10.98%2047.52-10.40Q46.09-9.83%2044.24-9.83L42.14-9.83L42.14%200M42.14-19.43L42.14-13.08L43.76-13.08Q44.77-13.08%2045.32-13.40Q45.86-13.72%2046.06-14.42Q46.26-15.12%2046.26-16.21Q46.26-17.25%2046.10-17.95Q45.95-18.65%2045.42-19.04Q44.88-19.43%2043.74-19.43M61.85%200L57.20%200L57.20-19.24L53.70-19.24L53.70-22.68L65.30-22.68L65.30-19.24L61.85-19.24M71.43%200L67.09%200L71.48-22.68L76.61-22.68L80.98%200L76.69%200L75.88-4.98L72.30-4.98L71.43%200M74.06-16.97L72.72-7.81L75.43-7.81M88.68%200L85.29%200L85.68-22.68L90.58-22.68L93.38-8.37L96.38-22.68L101.11-22.68L101.50%200L98.14%200L97.78-15.37L94.89%200L92.01%200L88.98-15.48M116.87%200L106.93%200L106.93-22.68L116.82-22.68L116.82-19.49L111.55-19.49L111.55-13.47L115.61-13.47L115.61-10.25L111.55-10.25L111.55-3.14L116.87-3.14M125.97%200L121.35%200L121.35-22.68L125.97-22.68L125.97-13.36L129.98-13.36L129.98-22.68L134.60-22.68L134.60%200L129.98%200L129.98-10.05L125.97-10.05M146.80%200L142.16%200L142.16-19.24L138.66-19.24L138.66-22.68L150.25-22.68L150.25-19.24L146.80-19.24%22%2F%3E%3C%2Fsvg%3E") left center/contain no-repeat}
.tb-name{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.tb-nav{display:flex;align-items:center;gap:2px;margin-left:12px}
.tb-nav a{position:relative;padding:8px 11px;border-radius:9px;font-size:14px;line-height:20px;font-weight:550;color:var(--ink-2);text-decoration:none;white-space:nowrap}
.tb-nav a:hover{background:var(--surface);color:var(--ink)}
.tb-nav a[aria-current="page"]{color:var(--ink)}
.tb-nav a[aria-current="page"]::after{content:"";position:absolute;left:11px;right:11px;bottom:1px;height:2px;border-radius:2px;background:var(--paint)}
.tb-sp{flex:1}
.tb-find{display:flex;align-items:center;gap:10px;height:40px;min-width:330px;padding:0 12px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--muted);font-size:14px;line-height:1.2;text-decoration:none}
.tb-find:hover{border-color:var(--ink-2)}
.tb-find svg{width:17px;height:17px;flex:none}
.tb-spec{display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;border-radius:10px;font-weight:550;font-size:14px;line-height:1.2;color:var(--ink-2);text-decoration:none}
.tb-spec:hover{background:var(--surface);color:var(--ink)}
.tb-spec svg{width:18px;height:18px;flex:none}
.tb-badge{min-width:22px;height:22px;padding:0 6px;border-radius:11px;background:var(--surface-3);color:var(--ink);font:650 12px/22px var(--f-ui);text-align:center}
.tb-badge.on{background:var(--paint);color:var(--paint-ink)}
.tb-theme{flex:none;width:40px;height:40px;display:grid;place-items:center;padding:0;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);cursor:pointer}
.tb-theme:hover{color:var(--ink);border-color:var(--ink-2)}
.tb-theme svg{width:18px;height:18px}
/* жёлтая кнопка «в калькулятор» в тексте страниц разделов (раньше была и в шапке) */
.tb-cta{display:inline-flex;align-items:center;min-height:40px;padding:9px 16px;border-radius:10px;background:var(--paint);color:var(--paint-ink);
  font-weight:650;font-size:14px;line-height:1.3;text-decoration:none;box-shadow:inset 0 -2px 0 rgba(0,0,0,.14)}
.tb-cta:hover{filter:brightness(1.04) saturate(1.05)}
@media (max-width:1180px){ .tb-find{min-width:240px} }
@media (max-width:1060px){ .tb-find{min-width:0;width:40px;padding:0;justify-content:center} .tb-find span{display:none} }
/* телефон: шапка не липнет, разделы — второй строкой */
@media (max-width:899px){
  .topbar{position:relative;flex-wrap:wrap;gap:0 8px;padding:4px 16px 0;min-height:0}
  .tb-brand{min-height:44px}
  .tb-find,.tb-theme{width:44px;height:44px}
  .tb-spec{height:44px;padding:0 8px}
  .tb-spec-t{display:none}
  .tb-nav{order:9;width:calc(100% + 32px);margin:4px -16px 0;padding:0 16px 8px;gap:6px;overflow-x:auto;scrollbar-width:none}
  .tb-nav::-webkit-scrollbar{display:none}
  .tb-nav a{flex:none;padding:11px 14px;background:var(--surface);border:1px solid var(--line-2)}
  .tb-nav a[aria-current="page"]{border-color:var(--paint);background:var(--paint-soft)}
  .tb-nav a[aria-current="page"]::after{display:none}
}
@media (max-width:420px){
  .tb-logo{width:29.3px;height:26px}
  .tb-brand::after{width:100.6px;height:26px;margin-left:7.4px}
}

/* ============ Раскладка ============ */
main{display:block}
.page{max-width:1240px;margin:0 auto;padding:22px 20px 48px}
.page.prose{max-width:880px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--muted);margin:0 0 14px}
.crumbs a{color:var(--ink-2);text-decoration:none}
.crumbs a:hover{color:var(--ink);text-decoration:underline}
.crumbs span{color:var(--line-strong)}
.crumbs b{color:var(--ink);font-weight:600}
.lead{color:var(--ink-2);font-size:16px;line-height:1.62;max-width:49em}
main.page>h1{display:flex;align-items:center;gap:16px}
main.page>h1::before{content:"";flex:none;width:60px;height:60px;margin:-6px 0;background:var(--pi) center/contain no-repeat;display:none}
html:has(link[rel="canonical"][href*="/sortament/"]) main.page>h1::before,
html:has(link[rel="canonical"][href*="/gost/gost-"]) main.page>h1::before{display:block}
html:has(link[rel="canonical"][href$="/sortament/"]) main.page>h1::before{display:none}
main.page:has(>.answer)>h1::before{display:none!important}
.grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:28px;align-items:start;margin-top:8px}
/* ширина строк — в em, не в ch: ch зависит от шрифта, и до загрузки Onest абзацы переносились иначе (сдвиг страницы) */
.prose>p,.prose>ul,.prose>ol{max-width:49em}
.prose ul,.prose ol{margin:0 0 14px;padding-left:22px}
.prose li{margin-bottom:6px}
.aside{display:flex;flex-direction:column;gap:14px}
.panel{background:var(--surface);border:1px solid var(--line-2);border-radius:16px;padding:18px;box-shadow:var(--shadow-1)}
.panel+.panel{margin-top:14px}
.aside .panel+.panel{margin-top:0}
.panel>h3:first-child{font-size:16px;font-weight:650;margin-top:0}

/* ============ «Короткий ответ» ============ */
.answer{position:relative;background:var(--surface);border:1px solid var(--line-2);border-radius:18px;padding:22px 24px;margin:0 0 18px;box-shadow:var(--shadow-1)}
html:has(link[rel="canonical"][href*="/sortament/"]) .answer,html:has(link[rel="canonical"][href*="/gost/gost-"]) .answer{padding-right:170px}
html:has(link[rel="canonical"][href*="/sortament/"]) .answer::after,html:has(link[rel="canonical"][href*="/gost/gost-"]) .answer::after{
  content:"";position:absolute;right:22px;top:18px;width:128px;height:128px;background:var(--pi) center/contain no-repeat}
.answer .big{display:flex;align-items:baseline;gap:6px 14px;flex-wrap:wrap}
.answer .big b{font:700 clamp(40px,5.2vw,58px)/.98 var(--f-display);font-variation-settings:"wdth" 86;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.answer .big b[style]{font:650 clamp(20px,2.6vw,27px)/1.2 var(--f-ui);letter-spacing:-.01em}
.answer .big span{color:var(--ink-2);font-size:15px;line-height:1.45;max-width:37em}
.kpis{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px 22px;margin-top:20px;padding-top:16px;border-top:1px dashed var(--line)}
/* ровные ряды без «сирот»: 4 и 5 показателей — в строку, 8 и больше — по четыре */
.kpis:has(>.kpi:nth-child(4):last-child){grid-template-columns:repeat(4,minmax(0,1fr))}
.kpis:has(>.kpi:nth-child(5):last-child){grid-template-columns:repeat(5,minmax(0,1fr))}
.kpis:has(>.kpi:nth-child(8)){grid-template-columns:repeat(4,minmax(0,1fr))}
.kpi{display:flex;flex-direction:column;gap:3px;min-width:0}
.kpi b{font:650 21px/1.1 var(--f-display);font-variation-settings:"wdth" 90;font-variant-numeric:tabular-nums}
.kpi span{font-size:12.5px;color:var(--muted);line-height:1.35}
.kpis.pl{border-top:0;margin-top:0;padding-top:0}
.tnote{color:var(--muted);font-size:13px;line-height:1.55;margin:-4px 0 18px}
.answer .tnote{color:var(--ink-2);font-size:14px}

/* ============ Таблицы ============ */
.tw{overflow-x:auto;border:1px solid var(--line-2);border-radius:14px;background:var(--surface);margin:8px 0 16px;box-shadow:var(--shadow-1)}
table{width:100%;border-collapse:collapse;font-size:14px;font-variant-numeric:tabular-nums;min-width:440px}
th,td{padding:10px 14px;text-align:right;border-bottom:1px solid var(--line-2);white-space:nowrap}
th:first-child,td:first-child{text-align:left;position:sticky;left:0;background:var(--surface)}
thead th,thead th:first-child{background:var(--surface-2);font-size:12.5px;font-weight:550;color:var(--muted)}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:var(--paint-soft)}
td a{font-weight:650;color:var(--ink);text-decoration:none}
td a:hover{text-decoration:underline}
td.acc{font-weight:650;color:var(--ink)}
tr.hl td{background:var(--paint-soft);font-weight:650}

/* ============ Мини-калькулятор ============ */
.calc{display:grid;gap:12px}
.calc label{display:block;font-size:12.5px;font-weight:550;color:var(--ink-2);margin-bottom:6px}
.calc input{width:100%;height:48px;border:1px solid var(--field);border-radius:11px;background:var(--surface);color:var(--ink);padding:0 14px;
  font:600 19px var(--f-ui);font-variant-numeric:tabular-nums;outline:none;transition:border-color .15s,box-shadow .15s}
.calc input:focus{border-color:var(--ink);box-shadow:0 0 0 3px color-mix(in srgb,var(--ink) 12%,transparent)}
.calc .row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.calc .presets{display:grid;grid-template-columns:repeat(auto-fit,minmax(0,1fr));gap:6px} /* ровная строка при любом шрифте */
.calc .presets button{height:32px;padding:0 4px;white-space:nowrap;border-radius:8px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);font:550 13.5px var(--f-ui);cursor:pointer}
.calc .presets button:hover{border-color:var(--ink-2);color:var(--ink)}
.calc .out{display:grid;grid-template-columns:1fr 1fr;gap:12px 14px;padding:16px;border-radius:12px;background:var(--surface-2)}
.calc .out div{display:flex;flex-direction:column;gap:1px;min-width:0}
.calc .out span{font-size:12px;color:var(--muted)}
.calc .out b{font-size:16px;font-weight:650;font-variant-numeric:tabular-nums;white-space:nowrap}
.calc .out .m{grid-column:1/-1;padding-bottom:10px;border-bottom:1px dashed var(--line)}
.calc .out .m span{font-size:12.5px;font-weight:550;color:var(--ink-2)}
.calc .out .m b{font:700 38px/1.05 var(--f-display);font-variation-settings:"wdth" 86;letter-spacing:-.015em}
.calc .go,a.calc.go{display:flex;align-items:center;justify-content:center;min-height:48px;padding:0 14px;border-radius:12px;background:var(--paint);color:var(--paint-ink);
  font-weight:650;font-size:15px;text-decoration:none;text-align:center;box-shadow:inset 0 -2px 0 rgba(0,0,0,.14)}
.calc .go:hover,a.calc.go:hover{filter:brightness(1.04) saturate(1.05)}

/* ============ Реклама (РСЯ) ============ */
.ad-slot{margin:20px 0;display:flex;justify-content:center}
.ad-slot:empty{display:none}
/* место под блок РСЯ держим заранее — реклама не сдвигает страницу */
.ad-slot.rtb{min-height:280px}
.aside .ad-slot.rtb{min-height:600px}
.ad-stub{width:100%;border:1.5px dashed var(--line);border-radius:12px;background:var(--surface-2);color:var(--muted);font-size:12.5px;line-height:1.5;text-align:center;padding:24px 14px}
.ad-stub b{display:block;color:var(--ink-2);font-size:13px;margin-bottom:3px}
.ad-label{font-size:11.5px;color:var(--muted);margin-bottom:4px;text-align:center}

/* ============ Вопросы ============ */
.faq{border-top:1px solid var(--line);margin:8px 0 20px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:15px 2px;font-weight:600;font-size:15.5px;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:400 22px/1 var(--f-ui);color:var(--muted);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .faq-body{padding:0 2px 16px;color:var(--ink-2);max-width:49em}
.faq .faq-body b{color:var(--ink)}

/* ============ Ссылки, карточки, соседние размеры ============ */
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 12px}
.chips a{min-height:34px;display:inline-flex;align-items:center;padding:0 13px;border-radius:9px;border:1px solid var(--line);background:var(--surface);
  font-size:14px;font-weight:550;color:var(--ink);text-decoration:none}
.chips a:hover{border-color:var(--ink-2)}
.tag{display:inline-block;border:1px solid var(--line);background:var(--surface);border-radius:7px;padding:2px 8px;font-size:12px;color:var(--ink-2);margin:0 6px 6px 0}
.pager{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:8px;margin-top:30px}
.pager a{display:flex;flex-direction:column;gap:2px;padding:12px 14px;border-radius:12px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);text-decoration:none}
.pager a:hover{border-color:var(--line-strong)}
.pager small{font-size:12px;color:var(--muted)}
.pager b{font-weight:650}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:10px;margin:18px 0 22px}
.card{display:grid;grid-template-columns:var(--ci-w,0px) minmax(0,1fr);column-gap:var(--ci-gap,0px);align-content:start;padding:14px 16px;border-radius:14px;
  border:1px solid var(--line-2);background:var(--surface);color:var(--ink);text-decoration:none;transition:border-color .15s}
.card:hover{border-color:var(--line-strong)}
.card::before{content:"";grid-column:1;grid-row:1/span 3;align-self:center;width:var(--ci-w,0px);height:var(--ci-w,0px);background:var(--ci,none) center/contain no-repeat}
.card>*{grid-column:2}
.card b{display:block;font-weight:650;font-size:15.5px;line-height:1.3}
.card span{display:block;color:var(--muted);font-size:13px;margin-top:2px}
.card i{display:block;font-style:normal;font-size:12.5px;font-weight:600;color:var(--paint-text);margin-top:8px}
.card[href*="/sortament/"],.card[href*="/gost/gost-"]{--ci-w:58px;--ci-gap:14px}
.card[href*="/sortament/shveller/"],.card[href*="gost-8240-97"]{--ci:url(/assets/img/profiles/channel.webp)}
.card[href*="/sortament/dvutavr/"],.card[href*="gost-35087-2024"],.card[href*="gost-26020-83"],.card[href*="gost-8239-89"]{--ci:url(/assets/img/profiles/beam.webp)}
.card[href*="/sortament/ugolok/"],.card[href*="gost-8509-93"],.card[href*="gost-8510-86"]{--ci:url(/assets/img/profiles/angle.webp)}
.card[href*="/sortament/truba-kvadratnaya/"],.card[href*="gost-30245-2003"]{--ci:url(/assets/img/profiles/tubeSq.webp)}
.card[href*="/sortament/truba-pryamougolnaya/"]{--ci:url(/assets/img/profiles/tubeRect.webp)}
.card[href*="/sortament/truba-kruglaya/"],.card[href*="gost-32528-2013"]{--ci:url(/assets/img/profiles/tubeRound.webp)}
.card[href*="/sortament/armatura/"],.card[href*="gost-34028-2016"],.card[href*="gost-5781-82"]{--ci:url(/assets/img/profiles/rebar.webp)}
.card[href*="/sortament/list/"],.card[href*="gost-19903-2015"]{--ci:url(/assets/img/profiles/plate.webp)}
.formula{font:italic 500 17px/1.5 var(--f-draw);background:var(--surface);border:1px solid var(--line-2);border-radius:12px;padding:12px 16px;margin:10px 0 16px;overflow-x:auto}

/* ============ Страница размера: ответ, чертёж сечения, калькулятор (собирает tools/pages.js) ============ */
main.sz>h1::before{display:none!important}
.sz-head{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr) 340px;grid-template-areas:"sum draw calc";margin:0 0 4px}
.sz-sum{grid-area:sum;min-width:0;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line-2);border-right:0;border-radius:18px 0 0 18px;padding:22px 24px;box-shadow:var(--shadow-1)}
.sz-mass{display:flex;align-items:baseline;flex-wrap:wrap;gap:2px 12px;margin:0}
.sz-mass b{font:700 clamp(46px,5.4vw,66px)/.95 var(--f-display);font-variation-settings:"wdth" 86;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.sz-mass span{font-size:15px;color:var(--ink-2)}
.sz-meta{margin:10px 0 0;font-size:14px;line-height:1.45;color:var(--muted)}
.sz-kpis{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 18px;margin:18px 0 0;padding-top:16px;border-top:1px dashed var(--line)}
.sz-kpis>div{min-width:0}
.sz-kpis dt{font-size:12.5px;line-height:1.35;color:var(--muted)}
.sz-kpis dd{margin:3px 0 0;font:650 20px/1.15 var(--f-display);font-variation-settings:"wdth" 90;font-variant-numeric:tabular-nums}
.sz-kpis dd small{font:500 12.5px var(--f-ui);color:var(--muted);white-space:nowrap}
.sz-std{margin-top:auto;padding-top:22px}
.sz-std p{margin:0 0 8px;font-size:12.5px;font-weight:550;color:var(--ink-2)}
.sz-std dl{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin:0;border:1px solid var(--line-2);border-radius:12px;background:var(--surface-2)}
.sz-std dl>div{padding:9px 12px;min-width:0}
.sz-std dl>div+div{border-left:1px solid var(--line-2)}
.sz-std dt{font-size:12.5px;color:var(--muted)}
.sz-std dd{margin:1px 0 0;font-weight:650;font-variant-numeric:tabular-nums;white-space:nowrap}
.sz-draw{grid-area:draw;min-width:0;margin:0;background:var(--surface-2);border:1px solid var(--line-2);border-radius:0 18px 18px 0;padding:12px 14px 12px;display:flex;flex-direction:column;justify-content:center;box-shadow:var(--shadow-1)}
.sz-draw svg{display:block;width:100%;height:auto;max-height:330px}
.sz-draw figcaption{margin-top:4px;font:italic 500 14px/1.3 var(--f-draw);color:var(--muted);text-align:center}
.sec .body{fill:url(#hatch);stroke:var(--draw);stroke-width:2.4;stroke-linejoin:round}
.sec .hl{stroke:var(--draw-2);stroke-width:1.2;opacity:.6}
.sec .ah{fill:var(--draw-2)}
.sec .cl{stroke:var(--draw-2);stroke-width:1;stroke-dasharray:26 6 4 6;opacity:.75}
.sec .el{stroke:var(--draw-2);stroke-width:1;opacity:.85}
.sec .dl{stroke:var(--draw-2);stroke-width:1.1}
.sec .ld{stroke:var(--draw-2);stroke-width:1;fill:none}
.sec .dt{font:italic 500 22px var(--f-draw);fill:var(--draw)}
.sz-calc{grid-area:calc;margin-left:28px;min-width:0}
.sz-calc h2{margin:0 0 12px;font-size:17px;line-height:1.3}
.sz-note{margin:0;font-size:12.5px;line-height:1.45;color:var(--muted);text-align:center}
.sz-near a{flex-direction:column;align-items:flex-start;justify-content:center;gap:1px;padding:7px 13px;line-height:1.2}
.sz-near a span{font-size:12px;font-weight:500;color:var(--muted)}
.sz-pager{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:30px}
.sz-pager a{display:flex;flex-direction:column;gap:2px;min-width:0;padding:12px 16px;border-radius:12px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);text-decoration:none}
.sz-pager a:hover{border-color:var(--line-strong)}
.sz-pager small{font-size:12px;color:var(--muted)}
.sz-pager b{font-weight:650}
.sz-pager span{font-size:12.5px;color:var(--ink-2)}
.sz-pager .up{align-items:center;justify-content:center;text-align:center}
.sz-pager .nx{align-items:flex-end;text-align:right}
.sz-pager .pv small::before{content:"← "}
.sz-pager .nx small::after{content:" →"}
@media (max-width:1000px){
  .sz-head{grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-template-areas:"sum draw" "calc calc";row-gap:16px}
  .sz-calc{margin-left:0}
}
@media (max-width:640px){
  .sz-head{grid-template-columns:minmax(0,1fr);grid-template-areas:"sum" "calc" "draw";row-gap:14px}
  .sz-sum{border-right:1px solid var(--line-2);border-radius:16px;padding:18px}
  .sz-draw{border-radius:16px;padding:10px 10px 12px}
  .sz-draw svg{max-height:260px}
  .sz-std{display:none}
  .sz-pager{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sz-pager .up{grid-column:1/-1;order:3}
  .sz-pager a{min-height:52px}
}

/* ============ Подвал ============ */
footer.site{margin-top:40px;border-top:1px solid var(--line);padding:30px 20px 40px;font-size:13.5px;color:var(--muted)}
.fw{max-width:1200px;margin:0 auto;display:grid;gap:22px 28px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.fw h4,.fw h2{margin:0 0 10px;font-size:14px;font-weight:650;line-height:1.4;letter-spacing:0;color:var(--ink)}
.fw a{display:block;padding:3px 0;color:var(--ink-2);text-decoration:none}
.fw a:hover{color:var(--ink);text-decoration:underline}
.fnote{grid-column:1/-1;border-top:1px solid var(--line-2);padding-top:16px;font-size:12.5px;line-height:1.6;max-width:73em}

/* ============ Cookie ============ */
/* как на главной: одна строка, кнопки справа */
#ck{position:fixed;left:16px;bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:70;max-width:600px;padding:10px 10px 10px 16px;border-radius:14px;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-2);font-size:13px;line-height:1.4;color:var(--ink-2);display:none;align-items:center;gap:8px 16px}
#ck.on{display:flex}
#ck .ck-t{margin:0;flex:1 1 auto}
#ck .row{display:flex;gap:6px;flex:none}
#ck button{height:34px;padding:0 13px;border-radius:9px;border:1px solid var(--ink);background:var(--ink);color:var(--surface);font:550 13.5px var(--f-ui);cursor:pointer}
#ck button.ghost{background:var(--surface);border-color:var(--line);color:var(--ink-2)}

/* ============ Телефон и планшет ============ */
@media (max-width:1000px){
  .grid{display:flex;flex-direction:column;align-items:stretch;gap:20px}
  .grid>*{min-width:0;width:100%}
  .aside{display:contents}
  .aside>.panel:has([data-calc]){order:-1}
  .aside>.panel+.panel{margin-top:0}
}
/* планшет: меню — отдельной строкой с прокруткой, а не в два ряда вразнобой */
@media (max-width:900px){
  .page{padding:16px 16px 40px}
  main.page>h1::before{width:46px;height:46px}
  html:has(link[rel="canonical"][href*="/sortament/"]) .answer,html:has(link[rel="canonical"][href*="/gost/gost-"]) .answer{padding:18px 18px 18px 18px}
  html:has(link[rel="canonical"][href*="/sortament/"]) .answer::after,html:has(link[rel="canonical"][href*="/gost/gost-"]) .answer::after{width:78px;height:78px;right:14px;top:12px}
  .answer .big{padding-right:84px}
  .kpis,.kpis:has(>.kpi:nth-child(4):last-child),.kpis:has(>.kpi:nth-child(5):last-child),.kpis:has(>.kpi:nth-child(8)){grid-template-columns:repeat(2,minmax(0,1fr))}
  .cards{grid-template-columns:minmax(0,1fr)}
  #ck{left:0;right:0;bottom:0;max-width:none;flex-wrap:wrap;border-radius:14px 14px 0 0;border-width:1px 0 0;padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px))}
  #ck .row{width:100%}
  #ck .row button{height:40px;flex:1}
  .chips a{min-height:42px}
  .calc .presets button{height:42px;padding:0 4px}
  .pager a{min-height:52px}
  html body .pl-add input,html body .pl-search input,html body .pl-note input,html body .pl-note textarea{font-size:16px}
}
@media print{
  .topbar,.ad-slot,.aside,aside,.pager,.sz-pager,.sz-calc,#ck,footer.site{display:none!important}
  body{background:#fff;color:#000}
  .answer,.tw,.panel{box-shadow:none}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}}