:root{
  --paper:#FFFFFF; --surface:#FFFFFF;
  --ink:#23282D; --ink-soft:#5F676E; --ink-faint:#97A0A6;
  --concrete:#DDE1E4; --navy:#142A45; --navy-light:#2C4A6E; --navy-deep:#0B2342;
  --accent:#12B4C4; --accent-soft:#6FE0EA; --line:#E7EAED;
  --warn:#B4541C; --ok:#1A8A5F;
  --font-display:'Space Grotesk',sans-serif;
  --font-body:'Inter',sans-serif;
  --font-mono:'JetBrains Mono',monospace;
  --blueprint-line:rgba(20,42,69,.065);
  --blueprint-strong:rgba(20,42,69,.13);
}
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto;} *{animation:none !important; transition:none !important;} }
body{
  background-color:#FBFCFD;
  background-image:linear-gradient(var(--blueprint-line) 1px, transparent 1px),linear-gradient(90deg, var(--blueprint-line) 1px, transparent 1px);
  background-size:44px 44px; background-position:center top;
  color:var(--ink); font-family:var(--font-body); line-height:1.55; font-size:16px;
}
a{color:var(--navy); text-decoration-color:var(--concrete);}
a:focus-visible, button:focus-visible, summary:focus-visible{outline:2px solid var(--accent); outline-offset:3px;}
img{max-width:100%;}
.wrap{max-width:1040px; margin:0 auto; padding:0 28px;}
@media (max-width:640px){ .wrap{padding:0 16px;} body{background-size:32px 32px;} }

html.js .reveal{ opacity:0; transform:translateY(16px); transition:opacity .6s ease, transform .6s ease; }
html.js .reveal.is-visible{ opacity:1; transform:none; }

/* ---------- Top nav ---------- */
.topnav{ position:sticky; top:0; z-index:50; background:rgba(255,255,255,.92); backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px); border-bottom:1px solid transparent; transition:border-color .25s, box-shadow .25s; }
.topnav.scrolled{ border-bottom-color:var(--line); box-shadow:0 12px 28px -20px rgba(20,42,69,.35); }
.topnav-inner{ display:flex; align-items:center; justify-content:space-between; gap:24px; padding-top:14px; padding-bottom:14px; }
.brand{ display:inline-flex; flex:none; text-decoration:none; }
.brand svg{ width:132px; height:auto; display:block; }
.brand:hover .glyph-ink, .brand.is-drawing .glyph-ink{ stroke-dashoffset:0; }
.brand:hover .pencil, .brand.is-drawing .pencil{ opacity:1; offset-distance:100%; }
nav.sitenav{ display:flex; flex-wrap:wrap; align-items:center; gap:4px 20px; }
nav.sitenav a{ font-family:var(--font-mono); font-size:13px; letter-spacing:.03em; color:var(--ink-soft); text-decoration:none; padding:3px 0; border-bottom:1px solid transparent; white-space:nowrap; }
nav.sitenav a:hover{ color:var(--ink); border-bottom-color:var(--accent); }
nav.sitenav a.active{ color:var(--ink); border-bottom-color:var(--navy); }
.nav-cta{ flex:none; }
.menu-toggle{ display:none; background:none; border:1px solid var(--line); padding:8px 10px; cursor:pointer; font-family:var(--font-mono); font-size:12px; color:var(--ink); }
@media (max-width:980px){
  .topnav-inner{ flex-wrap:wrap; gap:10px 16px; }
  .menu-toggle{ display:inline-block; margin-left:auto; }
  nav.sitenav{ display:none; order:3; width:100%; flex-direction:column; align-items:flex-start; gap:2px; padding:8px 0 4px; }
  .topnav.open nav.sitenav{ display:flex; }
  nav.sitenav a{ font-size:14px; padding:8px 0; }
  .nav-cta .btn{ padding:9px 14px; font-size:13px; }
}

/* ---------- Buttons ---------- */
.btn{ display:inline-flex; align-items:center; justify-content:center; gap:8px; font-family:var(--font-display); font-weight:600; font-size:14.5px; padding:13px 22px; text-decoration:none; border:1.5px solid transparent; cursor:pointer; transition:background .2s, color .2s, border-color .2s, transform .2s; line-height:1.2; }
.btn:hover{ transform:translateY(-1px); }
.btn-accent{ background:var(--accent); color:var(--navy); }
.btn-accent:hover{ background:#fff; color:var(--navy); }
.btn-navy{ background:var(--navy); color:#fff; }
.btn-navy:hover{ background:var(--accent); color:var(--navy); }
.btn-ghost-light{ background:transparent; color:#fff; border-color:rgba(255,255,255,.38); }
.btn-ghost-light:hover{ border-color:var(--accent-soft); color:var(--accent-soft); }
.btn-ghost{ background:transparent; color:var(--navy); border-color:var(--navy); }
.btn-ghost:hover{ background:var(--navy); color:#fff; }
.btn-row{ display:flex; flex-wrap:wrap; gap:12px; }
.link-arrow{ font-family:var(--font-display); font-weight:600; font-size:15px; color:var(--navy); text-decoration:none; border-bottom:1.5px solid var(--accent); padding-bottom:2px; }
.link-arrow:hover{ color:var(--accent); }

/* ---------- Bleed / hero ---------- */
.bleed{ width:100vw; margin-left:calc(50% - 50vw); margin-right:calc(50% - 50vw); }
.cover{ position:relative; background:var(--navy); overflow:hidden; }
.cover::before{ content:""; position:absolute; inset:0; background-image:linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size:44px 44px; -webkit-mask-image:radial-gradient(ellipse 80% 70% at 60% 40%, black 40%, transparent 100%); mask-image:radial-gradient(ellipse 80% 70% at 60% 40%, black 40%, transparent 100%); }
.cover::after{ content:""; position:absolute; top:-22%; right:-8%; width:600px; height:600px; border-radius:50%; background:radial-gradient(circle, rgba(18,180,196,.2) 0%, transparent 70%); pointer-events:none; }
.cover-inner{ position:relative; z-index:2; padding:96px 28px 88px; }
.cover-blueprint{ position:absolute; z-index:0; right:-12vw; top:50%; width:min(58vw,860px); transform:translateY(-48%); opacity:.4; pointer-events:none; }
.cover-blueprint .bp{ fill:none; stroke:rgba(255,255,255,.6); stroke-width:1.3; vector-effect:non-scaling-stroke; }
.cover-blueprint .bp-dim{ fill:none; stroke:rgba(111,224,234,.8); stroke-width:1; vector-effect:non-scaling-stroke; }
.cover-blueprint .bp-guide{ fill:none; stroke:rgba(255,255,255,.2); stroke-dasharray:7 7; vector-effect:non-scaling-stroke; }
.cover-blueprint text{ font-family:var(--font-mono); fill:rgba(255,255,255,.5); font-size:12px; letter-spacing:.08em; }
html.js .cover-blueprint{ animation:bp-in 1.6s ease .2s both; }
@keyframes bp-in{ from{ opacity:0; transform:translateY(-46%); } to{ opacity:.4; transform:translateY(-48%); } }
@media (max-width:900px){ html.js .cover-blueprint{ animation:none; } }
.eyebrow{ font-family:var(--font-mono); font-size:12px; letter-spacing:.12em; text-transform:uppercase; color:var(--navy); display:flex; align-items:center; gap:8px; margin-bottom:18px; }
.cover .eyebrow{ color:var(--accent-soft); }
h1{ font-family:var(--font-display); font-weight:700; font-size:clamp(30px,4.6vw,50px); line-height:1.08; letter-spacing:-.02em; }
.cover h1{ color:#fff; max-width:17ch; text-shadow:0 12px 36px rgba(5,18,35,.34); }
.cover-sub{ margin-top:20px; max-width:54ch; font-size:17.5px; color:#BFC8CD; line-height:1.6; }
.cover .btn-row{ margin-top:34px; }
.cover-facts{ margin-top:44px; display:flex; flex-wrap:wrap; gap:10px 28px; font-family:var(--font-mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:rgba(255,255,255,.55); }
.cover-facts span::before{ content:"+ "; color:var(--accent); }
@media (max-width:900px){ .cover-blueprint{ right:-40%; width:1000px; opacity:.22; } }
@media (max-width:640px){ .cover-inner{ padding:64px 16px 60px; } .cover-blueprint{ display:none; } .cover .btn-row .btn{ flex:1 1 100%; } }

/* page hero (inner pages) */
.page-hero{ background:var(--navy); position:relative; overflow:hidden; }
.page-hero::before{ content:""; position:absolute; inset:0; background-image:linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px); background-size:44px 44px; }
.page-hero .wrap{ position:relative; padding-top:64px; padding-bottom:56px; }
.page-hero h1{ color:#fff; font-size:clamp(28px,4vw,42px); max-width:28ch; }
.page-hero p{ margin-top:14px; color:#BFC8CD; max-width:58ch; font-size:16.5px; }
.crumbs{ font-family:var(--font-mono); font-size:12px; color:rgba(255,255,255,.55); margin-bottom:16px; }
.crumbs a{ color:var(--accent-soft); text-decoration:none; }

/* ---------- Sections ---------- */
section.block{ padding:72px 0; position:relative; }
section.block.white{ background:rgba(255,255,255,.94); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.section-head{ display:flex; align-items:center; gap:12px; margin-bottom:26px; flex-wrap:wrap; }
.section-num{ font-family:var(--font-mono); font-size:13px; color:var(--accent); }
.section-num::before{ content:"— "; color:var(--ink-faint); }
h2{ font-family:var(--font-display); font-weight:600; font-size:clamp(23px,3vw,32px); letter-spacing:-.01em; line-height:1.2; }
h3{ font-family:var(--font-display); font-weight:600; font-size:17px; letter-spacing:-.01em; line-height:1.3; }
p{ color:var(--ink-soft); }
p + p{ margin-top:12px; }
.lead{ font-size:17px; color:var(--ink-soft); max-width:62ch; }
.head-row{ display:flex; justify-content:space-between; align-items:flex-end; gap:20px; flex-wrap:wrap; margin-bottom:28px; }
.head-row .section-head{ margin-bottom:0; }

/* ---------- Calculator ---------- */
.calc-shell{ display:grid; grid-template-columns:1.25fr .75fr; gap:0; border:1px solid var(--line); background:var(--surface); box-shadow:0 30px 60px -48px rgba(20,42,69,.5); }
@media (max-width:860px){ .calc-shell{ grid-template-columns:1fr; } }
.calc-form{ padding:28px clamp(18px,3vw,32px) 30px; }
.calc-side{ background:var(--navy); color:#fff; padding:28px clamp(18px,3vw,30px); display:flex; flex-direction:column; gap:18px; }
.calc-side .label{ font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.08em; color:var(--accent-soft); }
.big-result{ font-family:var(--font-mono); font-weight:600; font-size:clamp(34px,5vw,46px); line-height:1; color:#fff; }
.big-result small{ font-size:15px; color:#BFC8CD; font-weight:500; margin-left:6px; }
.side-grid{ display:grid; grid-template-columns:1fr 1fr; gap:14px 16px; border-top:1px solid rgba(255,255,255,.16); padding-top:16px; }
.side-grid .v{ font-family:var(--font-mono); font-size:15px; font-weight:600; color:#fff; margin-top:2px; }
.side-note{ font-size:12.5px; color:#AEB8BE; line-height:1.5; }
.side-actions{ margin-top:auto; display:flex; flex-direction:column; gap:10px; }
.side-actions .btn{ width:100%; }
.form-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:16px 22px; }
.form-grid.three{ grid-template-columns:repeat(3,1fr); }
@media (max-width:640px){ .form-grid, .form-grid.three{ grid-template-columns:1fr; } }
.field{ display:flex; flex-direction:column; gap:6px; min-width:0; }
.field label{ font-family:var(--font-mono); font-size:12px; letter-spacing:.01em; color:var(--ink-soft); }
.field input, .field select, .field textarea{ font-family:var(--font-mono); font-size:14.5px; color:var(--ink); border:1px solid #D5DADE; padding:10px 12px; background:#fff; border-radius:2px; width:100%; }
.field textarea{ font-family:var(--font-body); min-height:110px; resize:vertical; }
.field input:focus, .field select:focus, .field textarea:focus{ outline:2px solid var(--accent); outline-offset:0; border-color:var(--accent); }
.field .pair{ display:flex; gap:8px; }
.group-label{ font-family:var(--font-display); font-weight:600; font-size:12.5px; letter-spacing:.06em; color:var(--navy); margin:24px 0 12px; text-transform:uppercase; display:flex; align-items:center; gap:10px; }
.group-label::after{ content:""; flex:1; height:1px; background:var(--line); }
.group-label:first-child{ margin-top:0; }
.calc-form .btn{ margin-top:24px; }

/* Tabs */
.tabs{ display:flex; gap:4px; border-bottom:1px solid var(--line); overflow-x:auto; }
.tab-btn{ font-family:var(--font-display); font-weight:600; font-size:14px; background:none; border:none; padding:12px 16px; cursor:pointer; color:var(--ink-soft); border-bottom:2px solid transparent; white-space:nowrap; }
.tab-btn.active{ color:var(--ink); border-bottom-color:var(--accent); }
.tab-panel{ display:none; padding-top:26px; }
.tab-panel.active{ display:block; }

/* Results (calculator page) */
.result-panel{ margin-top:26px; background:#F6F9FA; border:1px solid var(--line); padding:24px 26px; display:none; }
.result-panel.show{ display:block; }
.result-headline{ font-family:var(--font-display); font-weight:700; font-size:20px; margin-bottom:4px; }
.result-sub{ font-size:13.5px; color:var(--ink-soft); margin-bottom:18px; }
.result-grid{ display:grid; grid-template-columns:repeat(auto-fit, minmax(150px,1fr)); gap:16px; }
.result-item{ border-top:2px solid var(--ink); padding-top:8px; }
.result-item .label{ font-family:var(--font-mono); font-size:10.5px; text-transform:uppercase; letter-spacing:.04em; color:var(--ink-soft); }
.result-item .value{ font-family:var(--font-mono); font-size:18px; font-weight:600; color:var(--ink); margin-top:3px; }
.result-item .value.pass{ color:var(--ok); }
.note-box{ margin-top:16px; padding:10px 14px; font-size:12.5px; border-left:2px solid var(--accent); color:var(--ink-soft); font-family:var(--font-mono); background:#fff; }
.note-box.warn{ border-left-color:var(--warn); color:var(--warn); }
.calc-side .note-box{ background:rgba(255,255,255,.06); color:#AEB8BE; border-left-color:var(--accent); }

/* ---------- Dropdowns (details) ---------- */
.dd{ border:1px solid var(--line); background:var(--surface); }
.dd + .dd{ border-top:none; }
.dd summary{ list-style:none; cursor:pointer; display:flex; align-items:center; justify-content:space-between; gap:16px; padding:18px 22px; font-family:var(--font-display); font-weight:600; font-size:16.5px; color:var(--ink); }
.dd summary::-webkit-details-marker{ display:none; }
.dd summary .meta{ font-family:var(--font-mono); font-size:11.5px; font-weight:500; color:var(--accent); letter-spacing:.06em; text-transform:uppercase; margin-right:auto; min-width:96px; }
.dd summary .ttl{ flex:1; }
.dd summary::after{ content:"+"; font-family:var(--font-mono); font-size:22px; font-weight:400; color:var(--accent); transition:transform .2s; flex:none; line-height:1; }
.dd[open] summary::after{ transform:rotate(45deg); }
.dd summary:hover{ background:rgba(18,180,196,.05); }
.dd-body{ padding:4px 22px 24px; }
.dd-body > * + *{ margin-top:14px; }
.dd.howto{ margin-top:18px; }
.dd.howto summary{ font-size:15px; }
.dd.target{ box-shadow:inset 3px 0 0 var(--accent); }
@media (max-width:640px){ .dd summary{ flex-wrap:wrap; padding:16px; } .dd summary .meta{ width:100%; } .dd-body{ padding:4px 16px 20px; } }

ol.howto-list{ counter-reset:h; list-style:none; display:flex; flex-direction:column; gap:10px; }
ol.howto-list li{ counter-increment:h; display:grid; grid-template-columns:34px 1fr; gap:10px; color:var(--ink-soft); font-size:15px; }
ol.howto-list li::before{ content:counter(h, decimal-leading-zero); font-family:var(--font-mono); font-weight:600; color:var(--accent); font-size:13px; padding-top:2px; }
ol.howto-list b{ color:var(--ink); }

/* ---------- Divider band with value props ---------- */
.band{ background:var(--navy); color:#fff; position:relative; overflow:hidden; }
.band::before{ content:""; position:absolute; inset:0; background-image:linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px); background-size:44px 44px; }
.band .wrap{ position:relative; padding-top:72px; padding-bottom:76px; }
.band h2{ color:#fff; max-width:22ch; }
.band .eyebrow{ color:var(--accent-soft); }
.band .lead{ color:#BFC8CD; margin-top:14px; }
.props{ margin-top:36px; display:grid; grid-template-columns:repeat(3,1fr); gap:14px; }
@media (max-width:860px){ .props{ grid-template-columns:1fr; } }
.prop{ border:1px solid rgba(255,255,255,.18); background:rgba(20,50,82,.7); padding:22px 22px 24px; display:flex; flex-direction:column; gap:12px; transition:border-color .2s, transform .2s; }
.prop:hover{ border-color:rgba(111,224,234,.7); transform:translateY(-3px); }
.prop svg{ width:100%; height:92px; display:block; }
.prop small{ font-family:var(--font-mono); font-size:10.5px; letter-spacing:.1em; color:var(--accent-soft); text-transform:uppercase; }
.prop h3{ color:#fff; }
.prop p{ color:#AEB8BE; font-size:14.5px; }
.limit-states{ display:flex; flex-direction:column; gap:6px; font-family:var(--font-mono); font-size:12.5px; color:#DDE8F0; }
.limit-states span{ display:flex; gap:8px; } .limit-states i{ font-style:normal; color:var(--accent-soft); }

/* ---------- About teaser / split ---------- */
.split{ display:grid; grid-template-columns:1.1fr .9fr; gap:48px; align-items:start; }
@media (max-width:820px){ .split{ grid-template-columns:1fr; gap:28px; } }
.fsi-card{ border:1px solid var(--ink); background:#fff; padding:24px; display:flex; flex-direction:column; gap:16px; }
.fsi-card img{ width:150px; height:auto; }
.fsi-card p{ font-size:14.5px; }

/* ---------- News ---------- */
.news-cards{ display:grid; grid-template-columns:repeat(3,1fr); gap:14px; }
@media (max-width:860px){ .news-cards{ grid-template-columns:1fr; } }
.news-card{ display:flex; flex-direction:column; gap:8px; padding:22px 24px; background:#fff; border:1px solid var(--line); text-decoration:none; color:inherit; position:relative; transition:border-color .2s, transform .2s, box-shadow .2s; }
.news-card:hover{ border-color:var(--accent); transform:translateY(-3px); box-shadow:0 20px 40px -30px rgba(20,42,69,.45); }
.news-card .date{ font-family:var(--font-mono); font-size:12px; color:var(--accent); letter-spacing:.06em; }
.news-card p{ font-size:14.5px; }
.news-card .more{ margin-top:auto; padding-top:8px; font-family:var(--font-mono); font-size:12px; color:var(--navy); }
.news-card:hover .more{ color:var(--accent); }

/* ---------- Contacts ---------- */
.contact-cta{ background:var(--navy); color:#fff; padding:28px clamp(20px,4vw,36px); display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:18px; }
.contact-cta p{ color:#C9CFD4; max-width:46ch; font-size:15.5px; }
.contact-cta p b{ color:#fff; }
.contact-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:24px; margin-top:26px; }
@media (max-width:640px){ .contact-grid{ grid-template-columns:1fr; } }
.contact-item{ border-top:2px solid var(--ink); padding-top:12px; }
.contact-item .label{ font-family:var(--font-mono); font-size:11px; letter-spacing:.06em; text-transform:uppercase; color:var(--ink-soft); margin-bottom:6px; }
.contact-item .value, .contact-item a{ font-family:var(--font-mono); font-size:15px; color:var(--ink); }
.request-form{ border:1px solid var(--line); background:#fff; padding:28px clamp(18px,3vw,32px); }
.form-hint{ font-size:12.5px; color:var(--ink-faint); margin-top:12px; }

/* ---------- Joint scheme ---------- */
.scheme-wrap{ display:grid; grid-template-columns:1.1fr .9fr; gap:28px; align-items:start; }
@media (max-width:820px){ .scheme-wrap{ grid-template-columns:1fr; } }
.scheme{ border:1px solid var(--line); background:#fff; padding:14px; }
.scheme svg{ width:100%; height:auto; display:block; }
.j-layer{ cursor:pointer; outline:none; }
.j-layer .shape{ transition:stroke .15s, stroke-width .15s, fill .15s; }
.j-layer:hover .shape, .j-layer:focus .shape, .j-layer.active .shape{ stroke:var(--accent); stroke-width:2.4; }
.j-layer.active .fillable{ fill:#E3F6F8; }
.scheme-detail{ margin-top:10px; padding:12px 14px; background:#F6F9FA; border-left:2px solid var(--accent); min-height:64px; }
.scheme-detail b{ display:block; font-family:var(--font-display); font-size:14px; color:var(--navy); }
.scheme-detail span{ font-size:13.5px; color:var(--ink-soft); }
.dims{ background:#fff; border:1px solid var(--line); padding:4px 18px; font-size:13.5px; }
.dims div{ display:flex; justify-content:space-between; gap:16px; padding:11px 0; }
.dims div + div{ border-top:1px solid var(--line); }
.dims span:first-child{ color:var(--ink-soft); }
.dims span:last-child{ font-family:var(--font-mono); font-weight:600; text-align:right; }

/* formula */
.formula-panel{ background:var(--navy); color:#fff; padding:28px clamp(18px,4vw,36px); }
.formula{ font-family:var(--font-mono); font-weight:600; font-size:clamp(22px,3.6vw,30px); }
.formula .acc{ color:var(--accent-soft); }
.formula sub{ font-size:.55em; }
.formula-terms{ margin-top:16px; font-size:14px; color:#BFC8CD; display:flex; flex-direction:column; gap:5px; }
.formula-terms b{ color:#fff; font-family:var(--font-mono); margin-right:6px; }

/* table */
.table-scroll{ overflow-x:auto; }
table{ width:100%; border-collapse:collapse; background:#fff; min-width:560px; }
th,td{ text-align:left; padding:12px 12px; border-bottom:1px solid var(--line); font-size:14px; vertical-align:top; }
th{ font-family:var(--font-mono); font-size:10.5px; letter-spacing:.06em; text-transform:uppercase; color:var(--ink-soft); font-weight:500; border-bottom:1px solid var(--ink); }
td:first-child{ font-family:var(--font-mono); color:var(--accent); width:30px; }
td.factor{ font-weight:700; color:var(--ink); }
.base-note{ font-family:var(--font-mono); font-size:12.5px; color:var(--ink-soft); border-left:2px solid var(--accent); padding:8px 14px; background:#fff; }
.base-note b{ color:var(--ink); }
.steps{ counter-reset:step; }
.step{ display:grid; grid-template-columns:44px 1fr; gap:14px; padding:14px 0; border-bottom:1px solid var(--line); }
.step:last-child{ border-bottom:none; }
.step::before{ counter-increment:step; content:counter(step, decimal-leading-zero); font-family:var(--font-mono); font-weight:600; color:var(--navy); }
.step h3{ font-size:15px; margin-bottom:2px; }
.step p{ font-size:14.5px; }

/* About */
.facts-row{ display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-top:28px; }
@media (max-width:720px){ .facts-row{ grid-template-columns:1fr; } }
.fact{ border-top:2px solid var(--ink); padding-top:12px; }
.fact b{ font-family:var(--font-display); font-size:16px; display:block; margin-bottom:4px; }
.fact p{ font-size:14.5px; }

/* FSI page */
.fsi-panel{ display:grid; grid-template-columns:220px 1fr; gap:36px; align-items:center; border:1px solid var(--ink); background:#fff; padding:30px clamp(18px,4vw,36px); }
@media (max-width:640px){ .fsi-panel{ grid-template-columns:1fr; gap:18px; } }
.fsi-quote{ font-family:var(--font-display); font-weight:500; font-size:clamp(17px,2.2vw,21px); color:var(--ink); line-height:1.45; }
.fsi-links{ display:flex; flex-wrap:wrap; gap:12px; margin-top:22px; }

/* ---------- Footer ---------- */
footer.site-footer{ background:var(--navy-deep); color:#AEB8BE; margin-top:0; }
footer.site-footer .wrap{ padding-top:40px; padding-bottom:44px; display:grid; grid-template-columns:1.2fr 1fr 1fr; gap:28px; }
@media (max-width:760px){ footer.site-footer .wrap{ grid-template-columns:1fr; } }
footer.site-footer b{ color:#fff; font-family:var(--font-display); font-size:15px; display:block; margin-bottom:8px; }
footer.site-footer a{ color:#DDE8F0; text-decoration:none; font-size:14px; }
footer.site-footer a:hover{ color:var(--accent-soft); }
footer.site-footer .col{ display:flex; flex-direction:column; gap:6px; font-size:13.5px; }
footer.site-footer .fsi-mini{ background:#fff; padding:8px 10px; width:max-content; margin-top:8px; }
footer.site-footer .fsi-mini img{ width:120px; display:block; }
.footer-bottom{ border-top:1px solid rgba(255,255,255,.1); }
.footer-bottom .wrap{ display:flex !important; justify-content:space-between; flex-wrap:wrap; gap:10px; padding-top:16px !important; padding-bottom:20px !important; font-family:var(--font-mono); font-size:11.5px; color:#7F8B93; }

[hidden]{ display:none !important; }

/* ---------- Mode switch ---------- */
.mode-switch{ display:inline-flex; border:1px solid var(--navy); margin-bottom:22px; max-width:100%; }
.mode-switch label{ position:relative; cursor:pointer; }
.mode-switch input{ position:absolute; opacity:0; inset:0; cursor:pointer; }
.mode-switch span{ display:block; padding:10px 16px; font-family:var(--font-display); font-weight:600; font-size:14px; color:var(--navy); transition:background .15s, color .15s; }
.mode-switch input:checked + span{ background:var(--navy); color:#fff; }
.mode-switch input:focus-visible + span{ outline:2px solid var(--accent); outline-offset:2px; }
@media (max-width:480px){ .mode-switch{ display:flex; } .mode-switch label{ flex:1; } .mode-switch span{ text-align:center; padding:10px 8px; font-size:13px; } }
.field.linked label{ color:var(--accent); }
.field.linked input, .field.linked select{ border-color:var(--accent); }
.big-result{ word-break:break-word; }

/* ---------- Calculator banner (home) ---------- */
.calc-banner{ background:var(--navy); color:#fff; position:relative; overflow:hidden; }
.calc-banner::before{ content:""; position:absolute; inset:0; background-image:linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px); background-size:44px 44px; pointer-events:none; }
.calc-banner > *{ position:relative; }
.calc-banner-main{ display:grid; grid-template-columns:200px 1fr; gap:40px; align-items:center; padding:40px clamp(20px,4vw,48px); }
.calc-banner-art svg{ width:100%; height:auto; display:block; }
.calc-banner .eyebrow{ color:var(--accent-soft); margin-bottom:12px; }
.calc-banner h2{ color:#fff; }
.calc-banner p{ color:#BFC8CD; margin:12px 0 24px; max-width:60ch; }
.calc-banner-alt{ border-top:1px solid rgba(255,255,255,.14); padding:20px clamp(20px,4vw,48px); display:flex; flex-wrap:wrap; justify-content:space-between; align-items:center; gap:14px 24px; background:rgba(11,35,66,.55); }
.calc-banner-alt p{ margin:0; font-size:15px; }
.calc-banner-alt b{ color:#fff; }
@media (max-width:720px){ .calc-banner-main{ grid-template-columns:1fr; gap:22px; } .calc-banner-art{ width:130px; } .calc-banner .btn{ width:100%; } }

/* ---------- Scheme + legend ---------- */
.scheme-wrap{ grid-template-columns:1.05fr .95fr; }
@media (max-width:820px){ .scheme-wrap{ grid-template-columns:1fr; } .scheme{ padding:6px; } .legend li{ padding:9px 12px; } }
.legend{ list-style:none; border:1px solid var(--line); background:#fff; }
.legend li{ padding:11px 14px; border-left:3px solid transparent; cursor:pointer; display:flex; flex-direction:column; gap:4px; transition:background .15s, border-color .15s; }
.legend li + li{ border-top:1px solid var(--line); }
.legend li:hover, .legend li.active{ background:rgba(18,180,196,.06); border-left-color:var(--accent); }
.legend li:focus{ outline:none; } .legend li:focus-visible{ outline:2px solid var(--accent); outline-offset:-2px; }
.legend b{ font-family:var(--font-display); font-size:14.5px; color:var(--ink); }
.legend .chips{ display:flex; flex-wrap:wrap; gap:4px; }
.legend .chips i{ font-style:normal; font-family:var(--font-mono); font-size:11px; color:var(--navy); background:#E6F6F8; padding:1px 7px; }
.legend .chips i.off{ background:#F1F2F3; color:var(--ink-faint); }
.legend .desc{ font-size:13px; color:var(--ink-soft); line-height:1.45; }
.j-layer.active .shape{ stroke:var(--accent) !important; stroke-width:2.4; }

/* ---------- Image scheme with hotspots ---------- */
.scheme-wrap--img{ grid-template-columns:minmax(0,624px) minmax(240px,1fr); }
@media (max-width:920px){ .scheme-wrap--img{ grid-template-columns:1fr; } }
.scheme--img{ padding:10px; }
.scheme-img{ position:relative; max-width:624px; margin:0 auto; }
.scheme-img img{ display:block; width:100%; height:auto; }
.hot{ position:absolute; background:transparent; border:0; padding:0; cursor:pointer; border-radius:3px; transition:background .15s, box-shadow .15s; }
.hot:hover, .hot.active{ background:rgba(18,180,196,.16); box-shadow:0 0 0 2px var(--accent); }
.hot:focus{ outline:none; } .hot:focus-visible{ box-shadow:0 0 0 2px var(--navy); }
.legend .no{ display:inline-block; min-width:22px; font-family:var(--font-mono); color:var(--accent); font-weight:600; }
.scheme-wrap--img .legend li{ padding:9px 12px; }
.scheme-wrap--img .legend .desc{ font-size:12.5px; }
@media (min-width:921px){ .scheme--img{ position:sticky; top:96px; } }
.form-grid{ align-items:end; }

/* ---------- Vector joint scheme ---------- */
.jsvg{ width:100%; height:auto; display:block; }
.jsvg .lead{ stroke:#97A0A6; stroke-width:1; fill:none; transition:stroke .15s; }
.jsvg .lead-dot{ fill:#97A0A6; }
.jsvg .num{ fill:#fff; stroke:#12B4C4; stroke-width:1.4; }
.jsvg .num-t{ fill:#12B4C4; font-weight:600; }
.jsvg .ptxt{ fill:#142A45; font-weight:600; transition:fill .15s; }
.jsvg .glow{ fill:transparent; transition:fill .15s; }
.jsvg .j-layer{ cursor:pointer; }
.jsvg .j-layer.active .shape, .jsvg .j-layer:hover .shape{ stroke:#12B4C4 !important; }
.jsvg .j-layer.active .shape{ stroke-width:2.4; }
.jsvg .j-layer.active .fillable{ fill:#DDF4F7; }
.jsvg .j-layer.active .seam{ fill:#6FE0EA; }
.jsvg .j-layer.active .node{ fill:#12B4C4; }
.jsvg .j-layer.active .rebar{ stroke-dasharray:none; }
.jsvg .j-layer.active .glow{ fill:rgba(18,180,196,.35); }
.jsvg .j-layer.active .lead, .jsvg .j-layer:hover .lead{ stroke:#12B4C4; stroke-width:1.4; }
.jsvg .j-layer.active .ptxt, .jsvg .j-layer:hover .ptxt{ fill:#12B4C4; }
.jsvg .j-layer.active .num{ fill:#12B4C4; }
.jsvg .j-layer.active .num-t{ fill:#fff; }
.jsvg .j-layer:focus{ outline:none; }

.scheme-wrap--img{ grid-template-columns:minmax(0,560px) minmax(260px,1fr); }
@media (max-width:920px){ .scheme-wrap--img{ grid-template-columns:1fr; } .jsvg{ max-width:520px; margin:0 auto; } }

/* ---------- Optional factors (checkbox cards) ---------- */
.opt-grid{ display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:16px; align-items:start; }
@media (max-width:640px){ .opt-grid{ grid-template-columns:1fr; } }
.field.opt{ border:1px solid #D5DADE; background:#fff; gap:0; transition:border-color .15s, background .15s; }
.field.opt.on{ border-color:var(--navy); background:#FAFCFD; }
.field.opt.linked{ border-color:var(--accent); }
.opt-head{ display:grid !important; grid-template-columns:20px 1fr; column-gap:10px; row-gap:1px; align-items:center; padding:12px 14px; cursor:pointer; text-transform:none !important; }
.opt-head input{ position:absolute; opacity:0; width:1px; height:1px; }
.opt-head .box{ grid-row:span 2; width:18px; height:18px; border:1.5px solid var(--navy); background:#fff; position:relative; transition:background .15s; }
.opt-head input:checked + .box{ background:var(--navy); }
.opt-head input:checked + .box::after{ content:""; position:absolute; left:5px; top:1px; width:5px; height:10px; border:solid #fff; border-width:0 2px 2px 0; transform:rotate(45deg); }
.opt-head input:focus-visible + .box{ outline:2px solid var(--accent); outline-offset:2px; }
.opt-title{ font-family:var(--font-display); font-weight:600; font-size:14.5px; color:var(--ink); letter-spacing:0; }
.opt-hint{ font-family:var(--font-body); font-size:12.5px; color:var(--ink-faint); letter-spacing:0; }
.opt-body{ padding:2px 14px 14px; border-top:1px dashed var(--line); }
.opt-body .form-grid{ margin-top:12px; grid-template-columns:1fr 1fr; }
.opt-body .form-grid .field:only-child{ grid-column:1 / -1; }
.opt-note{ margin-top:10px; font-family:var(--font-mono); font-size:11.5px; color:var(--ink-soft); }
.side-grid{ grid-template-columns:1fr 1fr; }
.side-grid .label{ text-transform:none; letter-spacing:.02em; font-size:12px; }

.opt-grid{ grid-template-columns:1fr; }
.opt-body .form-grid{ grid-template-columns:repeat(3,1fr); }
@media (max-width:640px){ .opt-body .form-grid{ grid-template-columns:1fr 1fr; } }

/* ---------- Plain list inside dropdowns ---------- */
.plain-list{ margin:4px 0 0 20px; display:flex; flex-direction:column; gap:6px; color:var(--ink-soft); font-size:15px; }
.plain-list li::marker{ color:var(--accent); }

/* ================= v10: usability калькулятора ================= */
/* выбор задачи — две карточки */
.mode-cards{ display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-bottom:26px; }
@media (max-width:520px){ .mode-cards{ grid-template-columns:1fr; } }
.mode-card{ position:relative; cursor:pointer; display:block; }
.mode-card input{ position:absolute; opacity:0; inset:0; cursor:pointer; }
.mc-body{ display:flex; flex-direction:column; gap:3px; padding:13px 16px 13px 44px; border:1.5px solid #D5DADE; background:#fff; position:relative; transition:border-color .15s, background .15s; height:100%; }
.mc-body::before{ content:""; position:absolute; left:16px; top:16px; width:16px; height:16px; border-radius:50%; border:1.5px solid var(--navy); background:#fff; }
.mc-body b{ font-family:var(--font-display); font-size:15px; color:var(--ink); }
.mc-body small{ font-size:12.5px; color:var(--ink-soft); line-height:1.35; }
.mode-card input:checked + .mc-body{ border-color:var(--navy); background:#F4F8FA; }
.mode-card input:checked + .mc-body::before{ background:var(--navy); box-shadow:inset 0 0 0 3px #fff; }
.mode-card input:focus-visible + .mc-body{ outline:2px solid var(--accent); outline-offset:2px; }

/* шаги */
.group-label .step-no{ display:inline-flex; align-items:center; justify-content:center; width:22px; height:22px; border-radius:50%; background:var(--navy); color:#fff; font-size:12px; font-family:var(--font-mono); letter-spacing:0; flex:none; }
.group-label{ text-transform:none; letter-spacing:0; font-size:15px; color:var(--ink); }

/* поля: единица внутри поля, подсказка под полем */
.field label{ font-family:var(--font-body); font-size:13.5px; font-weight:600; color:var(--ink); letter-spacing:0; }
.field .hint{ font-size:12px; color:var(--ink-faint); line-height:1.35; }
.unit-wrap{ display:flex; align-items:stretch; border:1px solid #D5DADE; background:#fff; border-radius:2px; transition:border-color .15s; min-width:0; }
.unit-wrap:focus-within{ border-color:var(--accent); outline:2px solid var(--accent); outline-offset:0; }
.field .unit-wrap input{ border:0; outline:none !important; flex:1; min-width:0; padding:10px 8px 10px 12px; }
.unit-wrap .unit{ display:flex; align-items:center; padding:0 12px 0 4px; font-family:var(--font-mono); font-size:13px; color:var(--ink-faint); white-space:nowrap; }
.unit-wrap .pre{ display:flex; align-items:center; padding:0 0 0 10px; font-size:12px; color:var(--ink-faint); white-space:nowrap; }
.field .pair{ display:grid; grid-template-columns:1fr 1fr; gap:8px; }
.field.linked .unit-wrap{ border-color:var(--accent); }

/* опции «Добавить …» */
.opt-head{ align-items:start; }
.opt-head .box{ margin-top:1px; }
.opt-hint{ font-size:12.5px; line-height:1.4; }

/* кнопка + подсказка Enter */
.run-row{ display:flex; align-items:center; flex-wrap:wrap; gap:10px 16px; margin-top:24px; }
.run-row .btn{ margin-top:0 !important; }
.run-hint{ font-size:12.5px; color:var(--ink-faint); }

/* панель результата */
.side-head{ display:flex; justify-content:space-between; align-items:flex-start; gap:12px; }
.unit-switch{ display:inline-flex; border:1px solid rgba(255,255,255,.35); flex:none; }
.unit-switch label{ position:relative; cursor:pointer; }
.unit-switch input{ position:absolute; opacity:0; inset:0; cursor:pointer; }
.unit-switch span{ display:block; padding:4px 10px; font-family:var(--font-mono); font-size:12px; color:#BFC8CD; }
.unit-switch input:checked + span{ background:var(--accent); color:var(--navy); font-weight:600; }
.unit-switch input:focus-visible + span{ outline:2px solid #fff; outline-offset:1px; }
.calc-side .big-result{ margin-top:6px; }
.unit-note{ font-size:12px; color:#AEB8BE; margin-top:-6px; }
@keyframes res-flash{ 0%{ box-shadow:inset 0 0 0 2px var(--accent); } 100%{ box-shadow:inset 0 0 0 2px transparent; } }
.calc-side.updated{ animation:res-flash .9s ease-out; }
.form-grid{ align-items:start; }
.field-wide{ grid-column:1 / -1; }
.field-wide .pair{ grid-template-columns:1fr 1fr; }
.opt-body .form-grid{ grid-template-columns:repeat(3,1fr); }
@media (max-width:640px){ .form-grid.three{ grid-template-columns:1fr; } .field-wide .pair{ grid-template-columns:1fr; } .opt-body .form-grid{ grid-template-columns:1fr 1fr; } }
.side-sticky{ display:flex; flex-direction:column; gap:16px; }
.side-sticky .side-actions{ margin-top:8px; }
@media (min-width:861px){ .calc-side{ display:block; } .side-sticky{ position:sticky; top:96px; } }
.stale-note:empty{ display:none; }
.stale-note{ font-size:12.5px; color:var(--navy); background:var(--accent-soft); padding:8px 10px; line-height:1.35; }
.calc-side.stale .big-result, .calc-side.stale .side-grid, .calc-side.stale .unit-note{ opacity:.4; transition:opacity .2s; }

/* ================= v13: новости по кварталам ================= */
.quarter{ margin-bottom:44px; }
.quarter:last-child{ margin-bottom:0; }
.quarter-head{ display:flex; align-items:center; gap:14px; margin-bottom:14px; flex-wrap:wrap; }
.quarter-head h2{ font-size:clamp(19px,2.4vw,24px); }
.q-badge{ font-family:var(--font-mono); font-size:12px; letter-spacing:.06em; text-transform:uppercase; color:#fff; background:var(--navy); padding:5px 10px; }
.news-gallery{ display:grid; gap:10px; margin-top:16px; }
.news-gallery.n1{ grid-template-columns:minmax(0,560px); }
.news-gallery.n2{ grid-template-columns:repeat(2,1fr); }
.news-gallery.n3{ grid-template-columns:repeat(3,1fr); }
@media (max-width:640px){ .news-gallery.n2, .news-gallery.n3{ grid-template-columns:1fr; } }
.news-gallery figure{ margin:0; background:#F6F9FA; border:1px solid var(--line); }
.news-gallery a{ display:block; }
.news-gallery img{ display:block; width:100%; aspect-ratio:4/3; object-fit:cover; background:#fff; transition:opacity .15s; }
.news-gallery a:hover img{ opacity:.88; }
.news-gallery figcaption{ font-size:12.5px; color:var(--ink-soft); padding:8px 10px; }
#models-3d .news-gallery img, #ansys .news-gallery img{ object-fit:contain; }
/* карточки новостей на главной с фото */
.news-card.has-img{ padding:0; overflow:hidden; }
.news-card.has-img img{ display:block; width:100%; aspect-ratio:16/10; object-fit:cover; border-bottom:1px solid var(--line); }
.news-card.has-img .date, .news-card.has-img h3, .news-card.has-img p, .news-card.has-img .more{ margin-left:22px; margin-right:22px; }
.news-card.has-img .date{ margin-top:16px; }
.news-card.has-img .more{ margin-bottom:20px; }
.news-card.has-img img.contain{ object-fit:contain; background:#fff; padding:8px; }
#models-3d .news-gallery.n1{ grid-template-columns:minmax(0,360px); }
#dic .news-gallery.n1{ grid-template-columns:minmax(0,420px); }
#dic .news-gallery img{ aspect-ratio:auto; object-fit:contain; }

/* ================= v14: анимация эксцентриситета и монтажного смещения ================= */
.jsvg .ecc-move{ transform:translateX(0); transition:transform .7s cubic-bezier(.4,0,.2,1), opacity .2s; }
.jsvg .j-layer.active .ecc-move{ opacity:1; transform:translateX(29px); }
.jsvg .ecc-dim{ transition:opacity .3s ease .45s; }
.jsvg .j-layer.active .ecc-dim{ opacity:1; }
.jsvg .shift-ghost{ transform:translateX(0); transition:transform .7s cubic-bezier(.4,0,.2,1), opacity .2s; }
.jsvg .j-layer.active .shift-ghost{ opacity:1; transform:translateX(14px); }
.jsvg .shift-dim{ transition:opacity .3s ease .45s; }
.jsvg .j-layer.active .shift-dim{ opacity:1; }
@media (prefers-reduced-motion: reduce){ .jsvg .ecc-move, .jsvg .shift-ghost{ transition:opacity .2s; } }