/* One persistent shell, a single body.dark palette, no rendering on theme change. */
body.v5-active{--v5-bg:#f4f5f0;--v5-panel:#fff;--v5-ink:#193036;--v5-muted:#526267;--v5-line:#cbd6d4;--v5-accent:#087d80;--v5-soft:#e4f1ed;--v5-error:#a32922;background:var(--v5-bg);color:var(--v5-ink);margin:0;padding:0;font-family:Inter,Arial,sans-serif}body.v5-active.dark{--v5-bg:#101e22;--v5-panel:#192b30;--v5-ink:#edf4ef;--v5-muted:#b7c9c6;--v5-line:#486066;--v5-accent:#80ddd0;--v5-soft:#253e40;--v5-error:#ffb9a9}.v5-active *{box-sizing:border-box}
.v5-active #marketingHome,.v5-active #mainNav,.v5-active .sidebar,.v5-active .topbar,.v5-active .mobile-nav,.v5-active .mobile-bottom-nav,.v5-active #mobileNav,.v5-active .v4-appnav{display:none!important}.v5-active #appShell{grid-template-columns:minmax(0,1fr)!important;min-height:75vh;padding:0!important;margin:0!important;width:100%!important;max-width:none!important;background:transparent!important}.v5-active #appShell>.main,.v5-active #app{width:100%!important;max-width:100%!important;min-width:0!important;margin:0!important;padding:0!important}.v5-active #authScreen:not(.hidden){position:relative;inset:auto;min-height:80vh;margin-top:0;padding-top:24px}.v5-active #authScreen.hidden{display:none!important}
#v5-header{position:sticky;top:0;z-index:1200;background:var(--v5-panel);border-bottom:1px solid var(--v5-line);color:var(--v5-ink)}.v5-nav{max-width:1600px;margin:auto;min-height:76px;padding:14px 32px;display:flex;align-items:center;gap:28px}.v5-nav a{text-decoration:none;color:inherit}.v5-brand{display:flex;align-items:center;gap:9px;white-space:nowrap;letter-spacing:.015em}.v5-brand strong{font-size:16px}.v5-brand small{font-size:10px;border:1px solid var(--v5-line);padding:3px;border-radius:4px}.v5-brand img{object-fit:contain;width:32px;height:32px}#v5-nav-links{display:flex;gap:22px;align-items:center;margin-left:auto}#v5-nav-links a{font-size:13px;padding:8px 0;border-bottom:2px solid transparent}#v5-nav-links a[aria-current=page]{border-color:var(--v5-accent);font-weight:700}.v5-nav-actions{display:flex;align-items:center;gap:8px}.v5-icon,.v5-star{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;flex:0 0 36px;padding:7px;border:1px solid transparent;border-radius:8px;background:transparent;color:inherit;cursor:pointer}.v5-icon:hover,.v5-star:hover{background:var(--v5-soft)}.v5-nav button svg,.v5-star svg{width:20px;height:20px;margin:0}.v5-language select{border:0;background:var(--v5-panel);color:var(--v5-ink);font:inherit;font-size:12px;width:48px;padding:8px 0}.v5-account{display:flex;gap:6px;align-items:center;font-size:12px;font-weight:700}.v5-account svg{width:20px;height:20px}.v5-menu-toggle{display:none}
.v5-page{max-width:1440px;margin:auto;padding:38px 40px 80px}.v5-hero{max-width:930px;padding:24px 0 32px}.v5-kicker{font:700 11px/1.5 Arial,sans-serif;letter-spacing:.13em;color:var(--v5-accent);margin-bottom:14px}.v5-hero h1{font-size:clamp(32px,4vw,58px);line-height:1.1;letter-spacing:-.035em;color:var(--v5-ink);margin:0 0 18px;font-weight:650}.v5-hero p{font-size:17px;line-height:1.65;color:var(--v5-muted);max-width:710px;margin:0}.v5-page h2{color:var(--v5-ink);font-size:21px;line-height:1.3;letter-spacing:-.01em}.v5-page p{line-height:1.65}.v5-page a{color:var(--v5-accent)}.v5-page small{color:var(--v5-muted)}
.v5-button,.v5-small,.v5-filters button,.v5-reference-categories button{font:600 13px/1.35 Inter,Arial,sans-serif;display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:11px 15px;border:1px solid var(--v5-line);border-radius:8px;background:var(--v5-panel);color:var(--v5-ink)!important;cursor:pointer;text-decoration:none!important;max-width:100%;min-height:42px}.v5-button:hover,.v5-small:hover{border-color:var(--v5-accent);background:var(--v5-soft)}.v5-primary{background:var(--v5-ink);color:var(--v5-panel)!important;border-color:var(--v5-ink)}.v5-primary:hover{background:var(--v5-accent);color:var(--v5-bg)!important}.v5-button:disabled,.v5-small:disabled{cursor:default;opacity:.48}.v5-small{font-size:10px;padding:5px 9px;min-height:30px}.v5-text-button{font:inherit;text-decoration:underline;border:0;background:transparent;color:var(--v5-accent);cursor:pointer}.v5-home-actions,.v5-row-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.v5-home-actions{margin-bottom:35px}.v5-stats{display:flex;gap:50px;border-block:1px solid var(--v5-line);padding:22px 0;margin-bottom:38px}.v5-stats>div{display:flex;align-items:baseline;gap:12px}.v5-stats strong{font-size:36px;letter-spacing:-.04em}.v5-stats span{font-size:13px;color:var(--v5-muted)}.v5-section-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin:0 0 20px}.v5-section-head h2{margin:0}
.v5-tool-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:16px;margin:20px 0 36px}.v5-tool-card{position:relative;display:flex;flex-direction:column;padding:23px;background:var(--v5-panel);border:1px solid var(--v5-line);border-radius:12px;min-width:0;transition:border-color .15s}.v5-tool-card:hover{border-color:var(--v5-accent)}.v5-card-top{display:flex;align-items:center;justify-content:space-between;gap:8px}.v5-card-top small{font-size:10px;letter-spacing:.09em;font-weight:700}.v5-tool-card h2{font-size:22px;margin:18px 0 10px;overflow-wrap:anywhere}.v5-tool-card h2 a{text-decoration:none;color:var(--v5-ink)}.v5-tool-card p{font-size:13px;color:var(--v5-muted);margin:0 0 22px}.v5-card-open{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-size:12px;text-decoration:none}.v5-card-open svg{width:20px;height:20px}.v5-star[aria-pressed=true]{color:var(--v5-accent)}.v5-star[aria-pressed=true] svg{fill:currentColor}.v5-home-bottom{display:grid;grid-template-columns:1.5fr 1fr;gap:44px;border-top:1px solid var(--v5-line);padding:25px 0}.v5-home-bottom p{max-width:620px;color:var(--v5-muted)}
.v5-search-field{display:flex;flex-direction:column;gap:8px;font-size:12px;font-weight:700;max-width:740px;margin:10px 0 20px}.v5-search-field input{width:100%;padding:14px 16px;border:1px solid var(--v5-line);background:var(--v5-panel);color:var(--v5-ink);font:400 15px Inter,Arial,sans-serif;border-radius:9px}.v5-filters{display:flex;flex-wrap:wrap;gap:8px}.v5-filters button{font-size:11px;min-height:34px;padding:7px 11px}.v5-filters button[aria-pressed=true]{background:var(--v5-soft);border-color:var(--v5-accent)}.v5-reference-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:28px}.v5-reference-categories{display:flex;flex-direction:column;gap:5px;padding-top:20px}.v5-reference-categories button{justify-content:flex-start;align-items:flex-start;flex-direction:column;text-align:left;gap:3px}.v5-reference-categories button:disabled{cursor:default;color:var(--v5-muted)!important;background:transparent;border-color:transparent}.v5-reference-categories small{font-size:10px;font-weight:400}.v5-reference-layout .v5-tool-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,210px),1fr));max-height:570px;overflow:auto;padding:2px}
.v5-panel{background:var(--v5-panel);border:1px solid var(--v5-line);border-radius:12px;padding:24px;margin-bottom:18px;min-width:0}.v5-panel h2{margin-top:0}.v5-source{margin-top:20px;border-top:1px solid var(--v5-line);padding-top:18px}.v5-source p{font-size:13px;overflow-wrap:anywhere}.v5-price{max-width:560px}.v5-price h2{font-size:45px}.v5-note,.v5-empty{color:var(--v5-muted);font-size:13px}.v5-error{color:var(--v5-error);font-size:13px}.v5-error:empty{display:none}.v5-warning{padding:12px 14px;border-left:3px solid var(--v5-error);background:var(--v5-soft);font-size:13px}
.v5-studio{display:grid;grid-template-columns:minmax(300px,390px) minmax(0,1fr);gap:24px;align-items:start}.v5-model{min-width:0}.v5-model-form>fieldset{margin:14px 0;padding:16px;border:1px solid var(--v5-line);border-radius:10px;background:var(--v5-panel);min-width:0}.v5-model-form legend{font-size:13px;font-weight:700;padding:0 6px;color:var(--v5-ink)}.v5-model-form .v5-row-actions{margin-bottom:12px}.v5-fields,.v5-ref-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.v5-field{display:flex;flex-direction:column;gap:7px;min-width:0;margin:0}.v5-field>span{font:600 11px/1.4 Inter,Arial,sans-serif;color:var(--v5-ink);min-height:17px}.v5-field small{display:inline;font-size:10px;font-weight:400;white-space:normal}.v5-field input,.v5-field select{width:100%;min-width:0;height:42px;padding:8px 10px;border:1px solid var(--v5-line);border-radius:6px;background:var(--v5-bg);color:var(--v5-ink);font:400 13px Inter,Arial,sans-serif}.v5-field input:user-invalid{border-color:var(--v5-error);box-shadow:0 0 0 1px var(--v5-error)}.v5-ref-result{grid-column:1/-1}.v5-kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,180px),1fr));gap:12px;margin:10px 0 22px}.v5-kpi{padding:16px;background:var(--v5-soft);border-radius:8px;min-width:0}.v5-kpi>span{display:block;color:var(--v5-muted);font-size:11px;line-height:1.5;margin-bottom:8px}.v5-kpi>strong{display:block;font-size:25px;line-height:1.25;letter-spacing:-.015em;overflow-wrap:anywhere}.v5-kpi>strong small{font-size:12px;letter-spacing:normal}.v5-kpi details{margin-top:12px;font-size:11px}.v5-kpi summary{font-size:10px}.v5-kpi p{overflow-wrap:anywhere}.v5-active summary{cursor:pointer;line-height:1.5;font-weight:600}
.v5-table-scroll{overflow:auto;max-width:100%;border:1px solid var(--v5-line);border-radius:8px;margin:18px 0}.v5-table-scroll table{width:100%;border-collapse:collapse;background:var(--v5-panel);color:var(--v5-ink);font-size:11px}.v5-table-scroll caption{text-align:left;padding:14px;font-weight:700;font-size:13px}.v5-table-scroll th{text-align:left;background:var(--v5-soft)}.v5-table-scroll th,.v5-table-scroll td{padding:11px 12px;border-bottom:1px solid var(--v5-line);vertical-align:top;white-space:nowrap}.v5-table-scroll tr:last-child td{border-bottom:0}.v5-chart{margin:20px 0;padding:14px;border:1px solid var(--v5-line);border-radius:8px;background:var(--v5-bg);min-width:0}.v5-chart figcaption{font-size:12px;font-weight:600;margin-bottom:10px}.v5-chart svg{width:100%;height:auto;display:block}.v5-chart text{fill:var(--v5-muted);font:11px Arial,sans-serif}.v5-chart .axis{stroke:var(--v5-line)}.v5-chart .zero{stroke:var(--v5-line);stroke-dasharray:4 5}.v5-bars>div{display:grid;grid-template-columns:22px minmax(0,1fr) 70px;align-items:center;gap:12px;margin:12px 0;font-size:12px}.v5-bars i{display:block;min-height:24px;background:var(--v5-accent);border-radius:3px}.v5-bars strong{text-align:right;font-size:12px}.v5-model-svg{width:100%;height:auto;display:block;color:var(--v5-accent)}.v5-model-svg text{fill:var(--v5-ink);stroke:none;font:12px Arial,sans-serif}.v5-model-svg [data-drag]{cursor:ew-resize;touch-action:none}.v5-diagram{touch-action:pan-y}.v5-circuit{display:flex;align-items:center;flex-wrap:wrap;gap:9px;padding:15px 0}.v5-circuit span{position:relative;padding:9px 12px;border:1px solid var(--v5-line);border-radius:6px;font-size:12px;background:var(--v5-soft)}.v5-circuit span+span:before{content:'→';position:absolute;left:-11px;top:9px}.v5-equation{overflow-wrap:anywhere;font-size:13px}.v5-legacy-actions{display:flex;align-items:center;gap:16px;max-width:1360px;margin:12px auto;padding:8px 20px;font-size:12px}.v5-auto-reference{max-width:1320px;margin:16px auto!important;color:var(--v5-ink)}.v5-active #rc4Host{min-width:0}.v5-active .v4-calc-page{padding-top:15px!important}
.v5-footer{max-width:1440px;border-top:1px solid var(--v5-line);margin:auto;padding:28px 40px 40px;display:flex;align-items:center;gap:22px;font-size:11px;color:var(--v5-muted);flex-wrap:wrap}.v5-footer strong{color:var(--v5-ink)}.v5-footer>div{display:flex;gap:18px;margin-left:auto}.v5-footer a{color:var(--v5-muted)}.v5-saved-list{display:flex;flex-direction:column;align-items:flex-start;gap:8px}.v5-dialog{border:1px solid var(--v5-line);border-radius:14px;padding:24px;max-width:min(700px,calc(100vw - 24px));width:650px;max-height:85vh;overflow:auto;background:var(--v5-panel);color:var(--v5-ink);box-shadow:0 25px 90px #0005}.v5-dialog::backdrop{background:#07171999}.v5-dialog-head{display:flex;gap:12px;align-items:center;justify-content:space-between}.v5-dialog-head label{flex:1}.v5-dialog-head input{width:100%;padding:12px;border:0;border-bottom:1px solid var(--v5-line);font:16px Arial,sans-serif;color:var(--v5-ink);background:var(--v5-panel)}.v5-palette ul{list-style:none;margin:16px 0;padding:0;max-height:48vh;overflow:auto}.v5-palette li{padding:12px 15px;border-radius:7px;cursor:pointer;font-size:14px}.v5-palette li[aria-selected=true]{background:var(--v5-soft);outline:1px solid var(--v5-accent);outline-offset:-1px}.v5-palette p{font-size:11px;color:var(--v5-muted)}.v5-dialog .v5-fields{margin:20px 0}.v5-sr-only,.v5-skip{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.v5-skip:focus{clip:auto;width:auto;height:auto;z-index:1500;top:6px;left:6px;padding:12px;background:var(--v5-panel);color:var(--v5-ink)}.v5-active :focus-visible{outline:2px solid var(--v5-accent)!important;outline-offset:3px}
@media(min-width:1700px){.v5-page{max-width:1600px}.v5-studio{grid-template-columns:420px minmax(0,1fr)}}
@media(max-width:1100px){.v5-nav{gap:14px;padding:12px 20px}#v5-nav-links{gap:13px}.v5-account span{display:none}.v5-studio{grid-template-columns:320px minmax(0,1fr)}.v5-page{padding:25px 24px 60px}.v5-fields{grid-template-columns:1fr}}
@media(max-width:900px){.v5-menu-toggle{display:inline-flex;margin-left:auto}#v5-nav-links{display:none;position:absolute;top:100%;left:0;right:0;margin:0;background:var(--v5-panel);padding:20px;border-bottom:1px solid var(--v5-line);flex-wrap:wrap}#v5-nav-links.open{display:flex}.v5-studio{grid-template-columns:minmax(0,1fr)}.v5-fields{grid-template-columns:repeat(2,minmax(0,1fr))}.v5-model-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.v5-model-form>fieldset{margin:0}.v5-model-form>fieldset:first-of-type,.v5-model-form>.v5-row-actions,.v5-model-form>p,.v5-model-form>button{grid-column:1/-1}.v5-model-form .v5-fields{grid-template-columns:1fr}.v5-home-bottom{grid-template-columns:1fr 1fr;gap:25px}.v5-reference-layout{grid-template-columns:165px minmax(0,1fr);gap:18px}.v5-reference-categories button{font-size:11px}}
@media(max-width:560px){.v5-nav{min-height:66px;padding:10px 12px;gap:6px}.v5-brand{gap:6px}.v5-brand strong{font-size:13px}.v5-brand small{display:none}.v5-brand img{width:26px;height:26px}.v5-nav-actions{gap:1px}.v5-icon{width:30px;flex-basis:30px;padding:5px}.v5-language select{width:41px}.v5-account{padding:5px}.v5-page{padding:22px 16px 45px}.v5-hero{padding:12px 0 24px}.v5-hero h1{font-size:34px}.v5-hero p{font-size:14px}.v5-stats{gap:24px}.v5-stats>div{flex-direction:column;gap:2px}.v5-stats strong{font-size:30px}.v5-home-bottom{grid-template-columns:1fr}.v5-panel{padding:16px}.v5-fields,.v5-model-form,.v5-ref-form{grid-template-columns:minmax(0,1fr)}.v5-reference-layout{grid-template-columns:1fr}.v5-reference-categories{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));max-height:230px;overflow:auto;padding:0}.v5-reference-layout .v5-tool-grid{max-height:440px}.v5-tool-card{padding:20px}.v5-footer{padding:24px 16px;gap:12px}.v5-footer>div{margin-left:0;flex-wrap:wrap}.v5-dialog{padding:16px}.v5-kpi>strong{font-size:23px}.v5-auto-reference{margin-inline:12px!important}}
@media(prefers-reduced-motion:reduce){.v5-active *{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* ===== V5.1 PHASE 1 — RESTORE V4.1 PRODUCT IDENTITY ===== */
body.v5-active{
  --v5-bg:var(--v4-paper,#f5f4ef);--v5-panel:rgba(250,251,248,.78);--v5-ink:var(--v4-ink,#071118);
  --v5-muted:color-mix(in srgb,var(--v5-ink) 62%,transparent);--v5-line:var(--v4-line,rgba(7,17,24,.13));
  --v5-accent:var(--accent,#1689a1);--v5-soft:color-mix(in srgb,var(--v5-accent) 8%,var(--v5-panel));
  background:var(--v5-bg);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text",Inter,ui-sans-serif,system-ui,"Segoe UI",sans-serif;
}
body.v5-active:before{content:"";position:fixed;inset:0;z-index:-2;background:linear-gradient(135deg,#f7f0dc 0%,#edf8f5 34%,#edf0ff 68%,#f7eaf0 100%)}
body.v5-active.dark:before{background:linear-gradient(135deg,#071017,#0a1b20 38%,#12172a 70%,#23121c)}
body.v5-active.dark{--v5-panel:rgba(10,18,24,.78);--v5-ink:#f5f7f5;--v5-line:rgba(245,247,245,.13);--v5-muted:rgba(245,247,245,.62)}
#v5-header{position:sticky;top:18px;z-index:1200;background:transparent;border:0;padding:0 16px;pointer-events:none}
.v5-nav{pointer-events:auto;width:min(1180px,100%);max-width:none;min-height:66px;margin:0 auto;padding:0 18px;border-radius:22px;border:1px solid rgba(255,255,255,.42);background:color-mix(in srgb,var(--v5-panel) 92%,transparent);backdrop-filter:blur(24px) saturate(150%);box-shadow:0 10px 35px rgba(7,17,24,.08);gap:18px}
body.dark .v5-nav{border-color:rgba(255,255,255,.1);box-shadow:0 10px 35px rgba(0,0,0,.22)}
.v5-brand strong{font-size:13px;letter-spacing:.12em;font-weight:850}.v5-brand img{width:30px;height:30px}.v5-brand small{display:none!important}
#v5-nav-links{margin-left:16px;gap:4px}#v5-nav-links a{border:0!important;border-radius:11px;padding:10px 11px;font-size:12px;font-weight:650;color:var(--v5-muted)}#v5-nav-links a:hover,#v5-nav-links a[aria-current=page]{background:var(--v5-soft);color:var(--v5-ink)}
.v5-nav-actions{margin-left:auto}.v5-icon,.v5-star{border-radius:10px}.v5-account{min-height:38px;padding:0 12px;border:1px solid var(--v5-line);border-radius:12px;text-decoration:none!important}.v5-language{border:1px solid var(--v5-line);border-radius:10px;padding:0 8px}.v5-language select{background:transparent}
.v5-page{max-width:1220px;padding:72px 28px 90px}.v5-hero{max-width:860px;padding:18px 0 28px}.v5-kicker{font:800 10px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.12em}.v5-hero h1{font-size:clamp(38px,5vw,68px);font-weight:680;line-height:.98;letter-spacing:-.055em;text-wrap:balance}.v5-hero p{font-size:16px;max-width:680px}
.v5-button,.v5-small,.v5-filters button,.v5-reference-categories button{border-radius:12px;background:color-mix(in srgb,var(--v5-panel) 86%,transparent);backdrop-filter:blur(10px)}.v5-primary{background:var(--v5-ink)!important;color:var(--v5-bg)!important}
.v5-stats{gap:0;border:1px solid var(--v5-line);border-radius:18px;padding:0;overflow:hidden;background:color-mix(in srgb,var(--v5-panel) 72%,transparent)}.v5-stats>div{flex:1;padding:18px 22px;border-right:1px solid var(--v5-line)}.v5-stats>div:last-child{border-right:0}.v5-stats strong{font-size:28px}.v5-stats span{font:700 10px/1.4 ui-monospace,monospace;letter-spacing:.08em;text-transform:uppercase}
.v5-tool-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,250px),1fr));gap:1px;border:1px solid var(--v5-line);border-radius:18px;overflow:hidden;background:var(--v5-line)}.v5-tool-card{border:0;border-radius:0;padding:21px;background:var(--v5-bg);min-height:210px}.v5-tool-card:hover{background:var(--v5-panel)}.v5-tool-card h2{font-size:20px;margin:24px 0 9px}.v5-tool-card p{font-size:12px}.v5-card-open{font-weight:700}
.v5-panel{border-radius:18px;background:color-mix(in srgb,var(--v5-panel) 88%,transparent);backdrop-filter:blur(14px);box-shadow:0 12px 36px rgba(7,17,24,.045)}
.v5-home-search{position:relative;max-width:820px;margin:0 0 28px}.v5-home-search .v5-search-field{max-width:none;margin:0}.v5-search-input-wrap{display:flex;align-items:center;gap:10px;border:1px solid var(--v5-line);background:color-mix(in srgb,var(--v5-panel) 92%,transparent);border-radius:16px;padding:0 14px;box-shadow:0 16px 48px rgba(7,17,24,.07);backdrop-filter:blur(18px)}.v5-search-input-wrap svg{width:21px;height:21px;color:var(--v5-muted)}.v5-search-input-wrap input{border:0!important;background:transparent!important;padding:17px 0!important;outline:0;box-shadow:none!important}.v5-search-input-wrap kbd{font:700 10px ui-monospace,monospace;color:var(--v5-muted);border:1px solid var(--v5-line);padding:5px 7px;border-radius:7px;white-space:nowrap}.v5-home-search-results{position:absolute;z-index:20;top:78px;left:0;right:0;border:1px solid var(--v5-line);border-radius:14px;padding:7px;background:var(--v5-bg);box-shadow:0 20px 60px rgba(7,17,24,.16)}.v5-home-search-results a{display:grid;grid-template-columns:minmax(150px,.45fr) 1fr;gap:15px;padding:11px 12px;border-radius:9px;text-decoration:none!important;color:var(--v5-ink)!important}.v5-home-search-results a:hover{background:var(--v5-soft)}.v5-home-search-results span{font-size:11px;color:var(--v5-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.v5-studio{gap:18px}.v5-model-form>fieldset{border-radius:14px}.v5-kpi{border:1px solid var(--v5-line);background:color-mix(in srgb,var(--v5-panel) 75%,transparent);border-radius:12px}.v5-kpi>strong{font-size:23px}.v5-chart{border-radius:14px}
@media(max-width:760px){#v5-header{top:8px;padding:0 10px}.v5-nav{min-height:62px;border-radius:18px;padding:0 9px}.v5-brand strong{display:none}.v5-page{padding:46px 16px 70px}.v5-hero h1{font-size:clamp(36px,12vw,54px)}.v5-stats{display:grid;grid-template-columns:repeat(3,1fr)}.v5-stats>div{display:block;padding:13px 10px}.v5-stats strong{font-size:22px}.v5-stats span{display:block;margin-top:4px;font-size:8px}.v5-tool-grid{grid-template-columns:1fr}.v5-tool-card{min-height:170px}.v5-home-search-results a{grid-template-columns:1fr}.v5-home-search-results span{white-space:normal}.v5-search-input-wrap kbd{display:none}}

/* V5.1 · Phase 2 — search / personal workspace */
.v5-home-personal{margin:34px 0}.v5-home-result-main{min-width:0}.v5-home-result-main strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.v5-home-result-main small{display:block;margin-top:4px;color:var(--v5-muted);font-size:9px;font-weight:750;letter-spacing:.07em;text-transform:uppercase}.v5-home-search-results>p{margin:0;padding:12px;color:var(--v5-muted);font-size:12px}.v5-section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin:28px 0 12px}.v5-section-head h2{margin:0}.v5-section-head a{font-size:11px;font-weight:700;text-decoration:none}.v5-home-personal .v5-tool-grid{margin-top:0;margin-bottom:0}
@media(max-width:760px){.v5-home-personal{margin:26px 0}.v5-section-head{align-items:center}.v5-home-result-main strong{white-space:normal}}
.v5-reference-categories button[aria-pressed=true]{background:var(--v5-soft);border-color:var(--v5-accent);color:var(--v5-ink)}

/* ===== V5.1 PHASE 3 — ISO FITS / THREADS / ENGINEERING REFERENCES ===== */
.v5-auto-reference{margin:22px auto 16px;max-width:1180px;padding:22px 24px!important;border:1px solid color-mix(in srgb,var(--v5-accent) 26%,var(--v5-line));background:color-mix(in srgb,var(--v5-panel) 94%,transparent)}
.v5-auto-mode-head,.v5-ref-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:18px}.v5-auto-mode-head h2,.v5-ref-heading h2{margin:4px 0 5px;font-size:clamp(20px,2vw,28px);letter-spacing:-.025em}.v5-ref-heading p{margin:0;max-width:720px;color:var(--v5-muted);font-size:12px}.v5-mode-badge,.v5-ref-live{flex:0 0 auto;border:1px solid color-mix(in srgb,var(--v5-accent) 45%,var(--v5-line));border-radius:999px;padding:7px 10px;font:800 9px/1 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.09em;color:var(--v5-accent);background:var(--v5-soft)}
.v5-manual-advanced{max-width:1180px;margin:12px auto 26px;border:1px solid var(--v5-line);border-radius:16px;background:color-mix(in srgb,var(--v5-panel) 72%,transparent);overflow:hidden}.v5-manual-advanced>summary{display:flex;align-items:center;justify-content:space-between;gap:20px;cursor:pointer;list-style:none;padding:15px 18px;font-weight:750}.v5-manual-advanced>summary::-webkit-details-marker{display:none}.v5-manual-advanced>summary:after{content:'+';font:600 22px/1 ui-monospace,monospace;color:var(--v5-muted)}.v5-manual-advanced[open]>summary:after{content:'−'}.v5-manual-advanced>summary small{margin-left:auto;color:var(--v5-muted);font-weight:500}.v5-manual-advanced>#rc4Host{padding-top:0}
.v5-ref-form{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.v5-ref-form>.v5-ref-result{grid-column:1/-1}.v5-inline-facts{display:flex;gap:8px;flex-wrap:wrap;margin:11px 0}.v5-inline-facts span{border:1px solid var(--v5-line);border-radius:999px;padding:6px 9px;font:700 10px/1.1 ui-monospace,monospace;color:var(--v5-muted)}
.v5-fit-presets{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin:0 0 16px}.v5-fit-presets>small{flex-basis:100%;color:var(--v5-muted);font-size:10px}.v5-fit-presets button{appearance:none;border:1px solid var(--v5-line);background:color-mix(in srgb,var(--v5-panel) 80%,transparent);color:var(--v5-ink);border-radius:10px;padding:8px 10px;cursor:pointer;font-size:11px;font-weight:700;text-align:left}.v5-fit-presets button span{display:block;margin-top:3px;color:var(--v5-muted);font:700 9px ui-monospace,monospace}.v5-fit-presets button:hover,.v5-fit-presets button[aria-pressed=true]{border-color:var(--v5-accent);background:var(--v5-soft)}
.v5-fit-diagram{margin:4px 0 16px;border:1px solid var(--v5-line);border-radius:16px;padding:12px;background:color-mix(in srgb,var(--v5-panel) 68%,transparent);overflow:hidden}.v5-fit-diagram figcaption{font-size:11px;font-weight:750;color:var(--v5-muted);margin-bottom:4px}.v5-fit-diagram svg{display:block;width:100%;min-height:210px;max-height:300px}.v5-fit-diagram text{fill:var(--v5-muted);font:700 12px ui-monospace,SFMono-Regular,Menlo,monospace}.v5-fit-zero{stroke:var(--v5-ink);stroke-width:1.4;stroke-dasharray:5 5;opacity:.55}.v5-fit-zone rect{stroke-width:1.8;vector-effect:non-scaling-stroke;animation:v5-zone-in .24s ease-out}.v5-fit-hole-zone rect{fill:color-mix(in srgb,var(--v5-accent) 20%,transparent);stroke:var(--v5-accent)}.v5-fit-shaft-zone rect{fill:color-mix(in srgb,var(--v5-ink) 12%,transparent);stroke:color-mix(in srgb,var(--v5-ink) 72%,transparent)}.v5-fit-interference .v5-fit-shaft-zone rect{fill:color-mix(in srgb,#b54b44 18%,transparent);stroke:#9d413b}.v5-fit-transition .v5-fit-shaft-zone rect{fill:color-mix(in srgb,#b88422 18%,transparent);stroke:#9d721c}@keyframes v5-zone-in{from{opacity:.28;transform:scaleY(.72);transform-origin:center}to{opacity:1;transform:scaleY(1)}}.v5-fit-conclusion{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid var(--v5-line);padding-top:10px}.v5-fit-conclusion strong{font-size:16px}.v5-fit-conclusion span{color:var(--v5-muted);font:700 10px ui-monospace,monospace;text-align:right}.v5-fit-result-line{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:12px 0;padding:11px 12px;border:1px solid var(--v5-line);border-radius:11px;background:var(--v5-soft)}.v5-fit-result-line span{color:var(--v5-muted);font-size:10px}.v5-ref-error{padding:13px;border:1px solid color-mix(in srgb,#b54b44 50%,var(--v5-line));border-radius:10px}.v5-source{margin-top:14px}.v5-source p{font-size:11px;line-height:1.5}.v5-source a{overflow-wrap:anywhere}
@media(max-width:760px){.v5-auto-reference{margin:14px 10px 12px!important;padding:17px!important}.v5-auto-mode-head,.v5-ref-heading{display:block}.v5-mode-badge,.v5-ref-live{display:inline-block;margin-top:7px}.v5-ref-form{grid-template-columns:1fr}.v5-manual-advanced{margin-inline:10px}.v5-manual-advanced>summary{display:block}.v5-manual-advanced>summary small{display:block;margin-top:5px}.v5-fit-diagram{padding:8px}.v5-fit-diagram svg{min-height:180px}.v5-fit-conclusion,.v5-fit-result-line{align-items:flex-start;flex-direction:column}.v5-fit-conclusion span{text-align:left}}

/* V5.1 Phase 3.1 review correction: denser desktop workspace */
@media(min-width:1200px){
  .v5-page{max-width:1440px;padding:42px 34px 82px}
  .v5-hero{max-width:980px;padding:8px 0 22px}
  .v5-hero h1{font-size:clamp(44px,4.25vw,62px)}
  .v5-home-search{max-width:980px;margin-bottom:24px}
  .v5-home-actions{margin-bottom:28px}
  .v5-stats{margin-bottom:30px}
}
.v5-fit-help{display:flex;gap:12px;align-items:flex-start;margin:14px 0;padding:12px 14px;border:1px solid var(--v5-line);border-radius:12px;background:var(--v5-soft)}
.v5-fit-help strong{white-space:nowrap}.v5-fit-help span{color:var(--v5-muted);font-size:12px;line-height:1.5}

/* Phase 3.2 — keep the V4.1 home as the persistent visual shell.
   V5 functionality is layered into it instead of replacing it after boot. */
body.v5-active.v5-legacy-home{
  margin:0;
  background:radial-gradient(circle at 85% 0,rgba(103,203,220,.15),transparent 30%),var(--paper);
  color:var(--ink);
  font:16px/1.65 var(--ui-font);
}
body.v5-active.v5-legacy-home:before{display:none!important}
body.v5-active.v5-legacy-home #marketingHome.show{display:block!important}
body.v5-active.v5-legacy-home #appShell,
body.v5-active.v5-legacy-home #v5-header,
body.v5-active.v5-legacy-home .v5-footer{display:none!important}
body.v5-active.v5-legacy-home .studio-home{min-height:100vh}
.v5-v41-search{position:relative;margin:24px 0 8px;max-width:720px;z-index:15}
.v5-v41-search>label{display:block}
.v5-v41-search>label>span{display:block;margin-bottom:8px;font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.v5-v41-search>label>div{display:flex;align-items:center;gap:10px;min-height:54px;padding:0 14px;border:1px solid var(--line);border-radius:12px;background:color-mix(in srgb,var(--panel) 92%,transparent);box-shadow:0 12px 36px rgba(12,35,43,.08)}
.v5-v41-search svg{width:18px;height:18px;flex:0 0 auto;color:var(--muted)}
.v5-v41-search input{flex:1;min-width:0;border:0!important;outline:0!important;background:transparent!important;color:var(--ink)!important;font:600 14px/1.4 var(--ui-font)!important;box-shadow:none!important}
.v5-v41-search kbd{padding:3px 7px;border:1px solid var(--line);border-radius:6px;background:var(--paper);color:var(--muted);font:700 10px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace;white-space:nowrap}
.v5-v41-search-results{position:absolute;left:0;right:0;top:calc(100% + 8px);max-height:360px;overflow:auto;padding:8px;border:1px solid var(--line);border-radius:12px;background:var(--panel);box-shadow:0 24px 70px rgba(7,25,31,.18);z-index:80}
.v5-v41-search-results[hidden]{display:none!important}
.v5-v41-search-results a{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:16px;padding:11px 12px;border-radius:8px;color:var(--ink);text-decoration:none}
.v5-v41-search-results a:hover,.v5-v41-search-results a:focus-visible{background:rgba(103,203,220,.10)}
.v5-v41-search-results .v5-home-result-main{display:flex;flex-direction:column;gap:3px}
.v5-v41-search-results strong{font-size:13px}
.v5-v41-search-results small,.v5-v41-search-results a>span:last-child{font-size:11px;color:var(--muted)}
.v5-v41-personal{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;max-width:1440px;margin:0 auto;padding:34px clamp(20px,5vw,72px);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.v5-v41-personal-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px}
.v5-v41-personal-head h2{margin:0;font-size:16px;letter-spacing:-.01em}
.v5-v41-personal-head a{font-size:11px;font-weight:800;color:var(--cyan);text-decoration:none}
.v5-v41-quicklinks{display:flex;flex-wrap:wrap;gap:8px}
.v5-v41-quicklinks>a{display:flex;align-items:center;gap:8px;padding:9px 11px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--ink);text-decoration:none;transition:transform .16s ease,border-color .16s ease}
.v5-v41-quicklinks>a:hover{transform:translateY(-1px);border-color:var(--cyan)}
.v5-v41-quicklinks strong{font-size:11px}.v5-v41-quicklinks small{font-size:9px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
@media(max-width:760px){.v5-v41-search-results a{grid-template-columns:1fr}.v5-v41-personal{grid-template-columns:1fr;padding:24px 18px}.v5-v41-search kbd{display:none}}

/* V5.1 Phase 4 — Geometry & Projections interactive engineering workspace */
.geo-workspace{margin-top:8px;border-top:1px solid var(--v5-line);padding-top:20px}.geo-topbar{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:end;margin-bottom:18px}.geo-topbar h2{font-size:26px;margin:4px 0 6px}.geo-topbar p{margin:0;color:var(--v5-muted);max-width:720px;font-size:13px}.geo-toolbar{display:flex;align-items:end;justify-content:flex-end;gap:8px;flex-wrap:wrap}.geo-toolbar label{display:grid;gap:5px}.geo-toolbar label>span{font:700 9px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--v5-muted)}.geo-toolbar select,.geo-toolbar button{height:38px;border:1px solid var(--v5-line);border-radius:9px;background:var(--v5-panel);color:var(--v5-ink);padding:0 11px;font:700 11px/1.2 Inter,Arial,sans-serif}.geo-toolbar button{cursor:pointer}.geo-toolbar button:hover:not(:disabled),.geo-toolbar button[aria-pressed=true]{border-color:var(--v5-accent);background:var(--v5-soft)}.geo-toolbar button:disabled{opacity:.38;cursor:not-allowed}.geo-tabs{display:flex;gap:0;overflow-x:auto;border:1px solid var(--v5-line);border-radius:12px;background:var(--v5-panel);margin-bottom:16px}.geo-tabs button{appearance:none;border:0;border-right:1px solid var(--v5-line);background:transparent;color:var(--v5-muted);min-height:48px;padding:0 17px;font:750 11px/1.3 Inter,Arial,sans-serif;white-space:nowrap;cursor:pointer}.geo-tabs button:last-child{border-right:0}.geo-tabs button[aria-selected=true]{background:var(--v5-ink);color:var(--v5-panel)}.geo-layout{display:grid;grid-template-columns:minmax(260px,.72fr) minmax(420px,1.28fr);gap:14px;align-items:start}.geo-panel{border:1px solid var(--v5-line);border-radius:14px;background:var(--v5-panel);min-width:0;overflow:hidden}.geo-panel-head{min-height:54px;padding:13px 16px;border-bottom:1px solid var(--v5-line);display:flex;align-items:center;gap:11px}.geo-panel-head>span{font:800 10px/1 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--v5-accent)}.geo-panel-head h3{margin:0;font-size:14px}.geo-input-panel{grid-row:1 / span 2}.geo-input-panel>[data-geo-inputs]{padding:16px}.geo-canvas-panel{min-height:430px}.geo-canvas{min-height:365px;display:grid;place-items:center;padding:8px;background:linear-gradient(to right,color-mix(in srgb,var(--v5-line) 28%,transparent) 1px,transparent 1px),linear-gradient(to bottom,color-mix(in srgb,var(--v5-line) 28%,transparent) 1px,transparent 1px);background-size:24px 24px}.geo-canvas svg{width:100%;height:auto;max-height:390px}.geo-results-panel{grid-column:2}.geo-results-panel>[data-geo-results],.geo-results-panel>[data-geo-status],.geo-method{margin-inline:16px}.geo-results-panel>[data-geo-results]{padding:16px 0 10px}.geo-results-panel>[data-geo-status]:not(:empty){margin-top:14px}.geo-result-actions{margin-left:auto;display:flex;gap:7px}.geo-result-actions button{border:1px solid var(--v5-line);background:transparent;color:var(--v5-ink);border-radius:8px;padding:7px 9px;font:700 9px/1.2 Inter,Arial,sans-serif;cursor:pointer}.geo-result-actions button:hover{border-color:var(--v5-accent);background:var(--v5-soft)}.geo-field{display:grid;gap:6px;min-width:0}.geo-field>span{font-size:10px;font-weight:750;color:var(--v5-muted)}.geo-field small{font:700 9px/1 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--v5-accent)}.geo-field input,.geo-field select{width:100%;height:42px;border:1px solid var(--v5-line);border-radius:9px;background:var(--v5-panel);color:var(--v5-ink);padding:0 11px;font:700 13px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;outline:none}.geo-field input:focus,.geo-field select:focus{border-color:var(--v5-accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--v5-accent) 14%,transparent)}.geo-field.is-derived input{background:var(--v5-soft);color:var(--v5-muted);border-style:dashed}.geo-field.is-editable input{border-left:3px solid var(--v5-accent)}.geo-pair{margin-bottom:14px}.geo-values{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.geo-helper{font-size:10px!important;color:var(--v5-muted);margin:12px 0 0!important}.geo-sign{margin-top:12px}.geo-coord-group{display:grid;grid-template-columns:42px repeat(3,minmax(0,1fr));gap:9px;align-items:end;padding:12px 0;border-bottom:1px solid var(--v5-line)}.geo-coord-group:first-child{padding-top:0}.geo-coord-group:last-child{border-bottom:0}.geo-coord-group>strong{align-self:center;display:grid;place-items:center;width:34px;height:34px;border-radius:50%;border:1px solid var(--v5-line);font-size:12px}.geo-convention{display:grid;gap:4px;margin-top:14px;padding:12px;border-left:3px solid var(--v5-accent);background:var(--v5-soft);font-size:10px}.geo-convention span{color:var(--v5-muted)}.geo-kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--v5-line);border:1px solid var(--v5-line);border-radius:10px;overflow:hidden}.geo-kpis>div{display:grid;gap:4px;padding:11px;background:var(--v5-panel);min-width:0}.geo-kpis span{font-size:9px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;color:var(--v5-muted)}.geo-kpis strong{font-size:16px;overflow-wrap:anywhere}.geo-kpis small{font-size:9px;font-weight:700}.geo-mini-results{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.geo-mini-results span{padding:7px 9px;border:1px solid var(--v5-line);border-radius:8px;color:var(--v5-muted);font-size:10px}.geo-mini-results b{color:var(--v5-ink)}.geo-formula{margin-top:10px;padding:9px 11px;border:1px solid var(--v5-line);border-radius:8px;font:700 11px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--v5-muted)}.geo-method{border-top:1px solid var(--v5-line);padding:11px 0 14px;color:var(--v5-muted);font-size:10px}.geo-error{display:grid;gap:3px;padding:10px 12px;border:1px solid color-mix(in srgb,var(--v5-error) 50%,var(--v5-line));border-radius:9px;background:color-mix(in srgb,var(--v5-error) 8%,var(--v5-panel));color:var(--v5-error);font-size:11px}.geo-empty{min-height:330px;display:grid;place-items:center;text-align:center;color:var(--v5-muted);font-size:12px;padding:28px}.geo-canvas text{fill:var(--v5-muted);font:700 11px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace}.geo-axis{stroke:color-mix(in srgb,var(--v5-ink) 54%,transparent);stroke-width:1.4;fill:none;vector-effect:non-scaling-stroke}.geo-grid{stroke:color-mix(in srgb,var(--v5-line) 70%,transparent);stroke-width:1;fill:none;stroke-dasharray:4 8}.geo-vector{stroke:var(--v5-accent);stroke-width:3;fill:none;vector-effect:non-scaling-stroke}.geo-component{stroke:color-mix(in srgb,var(--v5-accent) 55%,var(--v5-line));stroke-width:1.4;fill:none;stroke-dasharray:6 5;vector-effect:non-scaling-stroke}.geo-point{fill:var(--v5-panel);stroke:var(--v5-accent);stroke-width:2.4;vector-effect:non-scaling-stroke}.geo-arrow-fill{fill:var(--v5-accent)}.geo-axis-fill{fill:color-mix(in srgb,var(--v5-ink) 60%,transparent)}.geo-shape{stroke:var(--v5-ink);stroke-width:2.3;fill:none;vector-effect:non-scaling-stroke}.geo-triangle-fill{fill:color-mix(in srgb,var(--v5-accent) 10%,transparent)}.geo-right{stroke:var(--v5-accent);stroke-width:1.8;fill:none}.geo-angle{stroke:var(--v5-accent);stroke-width:1.8;fill:none}.geo-project-axis{stroke-width:2}.geo-proj-parallel{stroke:var(--v5-accent);stroke-width:3;fill:none}.geo-proj-normal{stroke:#b47a21;stroke-width:2.5;fill:none}.geo-workspace svg path,.geo-workspace svg circle{transition:.18s ease}.geo-workspace [aria-pressed=true]{box-shadow:inset 0 0 0 1px var(--v5-accent)}
@media(max-width:1050px){.geo-topbar{grid-template-columns:1fr}.geo-toolbar{justify-content:flex-start}.geo-layout{grid-template-columns:1fr}.geo-input-panel{grid-row:auto}.geo-results-panel{grid-column:auto}.geo-canvas-panel{min-height:390px}.geo-kpis{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.geo-topbar h2{font-size:22px}.geo-toolbar{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));width:100%}.geo-toolbar button{grid-column:span 3}.geo-tabs{border-radius:9px}.geo-tabs button{min-height:44px;padding-inline:13px}.geo-values{grid-template-columns:1fr}.geo-coord-group{grid-template-columns:36px 1fr}.geo-coord-group>strong{grid-row:1 / span 3}.geo-canvas{min-height:300px;padding:3px}.geo-canvas-panel{min-height:355px}.geo-kpis{grid-template-columns:1fr 1fr}.geo-panel-head{flex-wrap:wrap}.geo-result-actions{width:100%;margin-left:30px}.geo-result-actions button{flex:1}}
/* V5.1 Phase 5 — RDM Studio 2D frame workspace */
.rdm-studio{display:grid;gap:18px}.rdm-toolbar{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;padding:4px 0 8px;border-bottom:1px solid var(--v5-line)}.rdm-toolbar h2{margin:4px 0 6px;font-size:25px;letter-spacing:-.02em}.rdm-toolbar p{margin:0;color:var(--v5-muted);max-width:780px;font-size:12px}.rdm-toolbar-actions{display:flex;gap:8px;flex-wrap:wrap}.rdm-layout{display:grid;grid-template-columns:minmax(430px,.92fr) minmax(540px,1.08fr);gap:16px;align-items:start}.rdm-editor{display:grid;gap:10px;min-width:0}.rdm-editor-card{border:1px solid var(--v5-line);border-radius:13px;background:var(--v5-panel);overflow:hidden}.rdm-editor-card>header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 13px;border-bottom:1px solid var(--v5-line);background:color-mix(in srgb,var(--v5-soft) 70%,var(--v5-panel))}.rdm-editor-card h3{margin:0;font-size:12px}.rdm-editor-card header p{margin:3px 0 0;color:var(--v5-muted);font-size:9px;max-width:460px}.rdm-editor-body{display:grid;gap:7px;padding:9px}.rdm-row{position:relative;display:grid;gap:7px;align-items:end;padding:8px 34px 8px 8px;border:1px solid var(--v5-line);border-radius:10px;background:var(--v5-bg)}.rdm-material-row{grid-template-columns:minmax(100px,1.1fr) .6fr .8fr minmax(120px,1.5fr)}.rdm-section-row{grid-template-columns:minmax(95px,1fr) minmax(100px,1fr) repeat(3,minmax(75px,.7fr))}.rdm-node-row{grid-template-columns:32px minmax(85px,1fr) .8fr .8fr}.rdm-element-row{grid-template-columns:40px repeat(4,minmax(90px,1fr))}.rdm-support-row{grid-template-columns:1fr 1fr}.rdm-load-row{grid-template-columns:1fr repeat(3,minmax(80px,.8fr))}.rdm-dload-row{grid-template-columns:1fr 1fr repeat(6,minmax(70px,.72fr));overflow-x:auto}.rdm-index{align-self:center;justify-self:center;font:800 10px/1 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--v5-accent)}.rdm-field{display:grid;gap:4px;min-width:0}.rdm-field>span{font-size:8px;font-weight:800;letter-spacing:.035em;color:var(--v5-muted);text-transform:uppercase}.rdm-field small{font-size:8px;color:var(--v5-accent);text-transform:none}.rdm-field input,.rdm-field select{width:100%;height:34px;border:1px solid var(--v5-line);border-radius:7px;background:var(--v5-panel);color:var(--v5-ink);padding:0 8px;font:700 10px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;outline:none}.rdm-field input:focus,.rdm-field select:focus{border-color:var(--v5-accent);box-shadow:0 0 0 2px color-mix(in srgb,var(--v5-accent) 13%,transparent)}.rdm-remove{position:absolute;right:7px;top:7px;width:22px;height:22px;border:1px solid transparent;border-radius:6px;background:transparent;color:var(--v5-muted);font-size:17px;line-height:1;cursor:pointer}.rdm-remove:hover{border-color:var(--v5-error);color:var(--v5-error);background:color-mix(in srgb,var(--v5-error) 7%,transparent)}.rdm-add{font-size:9px!important;padding:6px 9px!important;min-height:30px!important}.rdm-empty-row{margin:0;padding:9px 11px;color:var(--v5-muted);font-size:10px}.rdm-work{display:grid;gap:12px;position:sticky;top:90px}.rdm-canvas-panel{overflow:hidden}.rdm-canvas-panel [data-rdm-canvas]{min-height:380px;display:grid;place-items:center;padding:6px;background:linear-gradient(to right,color-mix(in srgb,var(--v5-line) 25%,transparent) 1px,transparent 1px),linear-gradient(to bottom,color-mix(in srgb,var(--v5-line) 25%,transparent) 1px,transparent 1px);background-size:24px 24px}.rdm-main-svg{display:block;width:100%;height:auto;max-height:460px}.rdm-member{stroke:var(--v5-ink);stroke-width:4;fill:none;vector-effect:non-scaling-stroke}.rdm-member-label,.rdm-node-label,.rdm-axis-text,.rdm-deformed-note,.rdm-distributed text,.rdm-load text{fill:var(--v5-muted);font:700 10px/1 ui-monospace,SFMono-Regular,Menlo,monospace}.rdm-node{fill:var(--v5-panel);stroke:var(--v5-accent);stroke-width:2.2;vector-effect:non-scaling-stroke}.rdm-support path,.rdm-support circle{stroke:var(--v5-muted);stroke-width:1.8;fill:none;vector-effect:non-scaling-stroke}.rdm-load{stroke:var(--v5-error);stroke-width:2;fill:none;vector-effect:non-scaling-stroke}.rdm-distributed{stroke:#b47a21;stroke-width:2;fill:none;stroke-dasharray:5 4;vector-effect:non-scaling-stroke}.rdm-deformed{stroke:var(--v5-accent);stroke-width:2.5;fill:none;stroke-dasharray:7 4;vector-effect:non-scaling-stroke}.rdm-axis{stroke:var(--v5-muted);stroke-width:1.2;vector-effect:non-scaling-stroke}.rdm-badge{padding:5px 8px;border:1px solid var(--v5-line);border-radius:999px;color:var(--v5-muted);font:700 8px/1 ui-monospace,SFMono-Regular,Menlo,monospace;text-transform:uppercase}.rdm-calc-bar{display:grid;grid-template-columns:1fr auto;gap:6px 12px;align-items:center;padding:11px 13px;border:1px solid var(--v5-line);border-radius:11px;background:var(--v5-panel)}.rdm-calc-bar>p:first-child{margin:0;color:var(--v5-muted);font-size:9px}.rdm-calc-bar .v5-error{grid-column:1;margin:0;min-height:12px}.rdm-calc-bar>[data-login]{grid-column:1;justify-self:start}.rdm-calc-bar>[data-rdm-calc]{grid-column:2;grid-row:1 / span 3;min-width:130px}.rdm-result-panel{overflow:hidden}.rdm-result-panel>[data-rdm-results]{padding:14px}.rdm-result-panel .v5-kpis{grid-template-columns:repeat(3,minmax(0,1fr));margin-bottom:14px}.rdm-result-tabs{display:grid;gap:10px;margin:16px 0}.rdm-force-figure{margin:0;border:1px solid var(--v5-line);border-radius:10px;overflow:hidden;background:var(--v5-bg)}.rdm-force-figure figcaption{padding:9px 11px;border-bottom:1px solid var(--v5-line);font-size:10px;font-weight:800}.rdm-force-figure figcaption small{float:right;color:var(--v5-muted);font-weight:600}.rdm-force-figure svg{display:block;width:100%;height:auto;max-height:280px}.rdm-force-base{stroke:color-mix(in srgb,var(--v5-muted) 60%,transparent);stroke-width:1.5;fill:none}.rdm-force-n{stroke:#38866b;stroke-width:2.2;fill:none}.rdm-force-v{stroke:#b47a21;stroke-width:2.2;fill:none}.rdm-force-m{stroke:var(--v5-accent);stroke-width:2.4;fill:none}.rdm-result-panel .v5-table-scroll{margin:12px 0}.rdm-assumptions p{max-width:920px}.rdm-assumptions a{display:inline-block;margin-top:8px}.rdm-studio .v5-kicker{font:800 9px/1 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.11em;text-transform:uppercase;color:var(--v5-accent)}
@media(max-width:1260px){.rdm-layout{grid-template-columns:minmax(380px,.9fr) minmax(460px,1.1fr)}.rdm-material-row{grid-template-columns:1fr 1fr}.rdm-material-row .rdm-field:last-child{grid-column:1 / -1}.rdm-section-row{grid-template-columns:1fr 1fr 1fr}.rdm-dload-row{grid-template-columns:repeat(4,minmax(90px,1fr))}.rdm-result-panel .v5-kpis{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:980px){.rdm-layout{grid-template-columns:1fr}.rdm-work{position:static}.rdm-editor{order:2}.rdm-work{order:1}.rdm-canvas-panel [data-rdm-canvas]{min-height:320px}}
@media(max-width:640px){.rdm-toolbar{align-items:flex-start;flex-direction:column}.rdm-toolbar h2{font-size:21px}.rdm-material-row,.rdm-section-row,.rdm-node-row,.rdm-element-row,.rdm-support-row,.rdm-load-row,.rdm-dload-row{grid-template-columns:1fr 1fr}.rdm-index{display:none}.rdm-row{padding-right:34px}.rdm-result-panel .v5-kpis{grid-template-columns:1fr 1fr}.rdm-calc-bar{grid-template-columns:1fr}.rdm-calc-bar>[data-rdm-calc]{grid-column:1;grid-row:auto;width:100%}.rdm-force-figure figcaption small{float:none;display:block;margin-top:4px}.rdm-canvas-panel [data-rdm-canvas]{min-height:260px}}
.rdm-library{display:grid;gap:4px;min-width:180px}.rdm-library>span{font-size:8px;font-weight:800;text-transform:uppercase;color:var(--v5-muted)}.rdm-library select{height:34px;border:1px solid var(--v5-line);border-radius:8px;background:var(--v5-panel);color:var(--v5-ink);padding:0 8px;font-size:10px}.rdm-graph-tools{display:flex;gap:4px;border:1px solid var(--v5-line);padding:3px;border-radius:9px;background:var(--v5-panel)}.rdm-graph-tools button{height:28px;border:0;border-radius:6px;background:transparent;color:var(--v5-muted);padding:0 8px;font-size:9px;font-weight:800;cursor:pointer}.rdm-graph-tools button[aria-pressed=true]{background:var(--v5-ink);color:var(--v5-panel)}.rdm-pending-node{fill:var(--v5-accent)!important;stroke-width:4!important}.rdm-main-svg [data-node-index]{cursor:grab}.rdm-main-svg [data-element-index]{cursor:pointer}
/* Phase 5 QA: keep the whole RDM result column in normal document flow to avoid scroll traps. */
.rdm-work{position:static;top:auto}

/* Phase 6 — Studios métiers */
.v5-fluid-stage{min-width:0}.v5-fluid-flow{display:flex;align-items:stretch;gap:8px;overflow-x:auto;padding:14px 4px 18px;scrollbar-width:thin}.v5-fluid-node{flex:0 0 150px;min-height:82px;padding:12px;border:1px solid var(--v5-line);border-radius:12px;background:var(--v5-soft);display:flex;flex-direction:column;justify-content:center;gap:6px}.v5-fluid-node strong{font-size:12px;line-height:1.3}.v5-fluid-node small{font-size:10px;line-height:1.45;color:var(--v5-muted)}.v5-fluid-node.pump{border-color:color-mix(in srgb,var(--v5-accent) 55%,var(--v5-line));box-shadow:inset 0 3px 0 var(--v5-accent)}.v5-fluid-node.boundary{background:var(--v5-panel)}.v5-fluid-node.pipe{box-shadow:inset 0 -3px 0 color-mix(in srgb,var(--v5-accent) 40%,transparent)}.v5-flow-arrow{align-self:center;color:var(--v5-accent);font-weight:800}.v5-fluid-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:4px}.v5-fluid-summary span{padding:9px 10px;border:1px solid var(--v5-line);border-radius:9px;font-size:10px;color:var(--v5-muted)}.v5-fluid-summary strong{display:block;margin-top:3px;color:var(--v5-ink);font-size:13px}.v5-model-svg .v5-opening{stroke:var(--v5-accent);stroke-width:2}.v5-model-svg .v5-opening.window{fill:color-mix(in srgb,var(--v5-accent) 14%,var(--v5-bg))}.v5-model-svg .v5-opening.door{fill:color-mix(in srgb,var(--v5-ink) 8%,var(--v5-bg))}.v5-model-svg .v5-opening+text{font-size:10px}.v5-studio fieldset legend{max-width:100%;overflow-wrap:anywhere}.v5-studio .v5-fields input[type=text]{font-size:12px}
@media(max-width:700px){.v5-fluid-summary{grid-template-columns:1fr}.v5-fluid-node{flex-basis:135px}.v5-studio .v5-fields{grid-template-columns:1fr}}

/* Phase 6.1 — Welding Studio diagram redesign */
.v5-weld-purpose{margin:0 0 16px;padding:15px 17px;border:1px solid color-mix(in srgb,var(--v5-accent) 28%,var(--v5-line));border-left:4px solid var(--v5-accent);border-radius:12px;background:color-mix(in srgb,var(--v5-accent) 5%,var(--v5-panel));color:var(--v5-ink)}
.v5-weld-purpose strong{display:block;margin-bottom:6px;font-size:13px}
.v5-weld-purpose p{margin:0 0 7px;font-size:12px;line-height:1.55;color:var(--v5-ink)}
.v5-weld-purpose small{display:block;color:var(--v5-muted);font-size:10px;line-height:1.45}
.v5-weld-diagram{min-width:0}
.v5-weld-diagram-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:0 0 8px;padding:0 2px}
.v5-weld-diagram-head strong{font-size:12px;color:var(--v5-ink)}
.v5-weld-diagram-head span{font-size:9px;color:var(--v5-muted);text-align:right}
.v5-weld-svg{overflow:visible}
.v5-weld-svg .v5-weld-plate{fill:color-mix(in srgb,var(--v5-ink) 8%,var(--v5-bg));stroke:var(--v5-line);stroke-width:1.6}
.v5-weld-svg .v5-weld-member-plan{fill:color-mix(in srgb,var(--v5-ink) 6%,var(--v5-bg));stroke:var(--v5-line);stroke-width:1.4}
.v5-weld-svg .v5-weld-metal{fill:color-mix(in srgb,var(--v5-accent) 80%,transparent);stroke:var(--v5-accent);stroke-width:2}
.v5-weld-svg .v5-weld-line{stroke:var(--v5-accent);stroke-width:8;stroke-linecap:round}
.v5-weld-svg .v5-weld-center{stroke:var(--v5-muted);stroke-width:1;stroke-dasharray:4 4}
.v5-weld-svg .v5-weld-load path{stroke:var(--v5-accent);stroke-width:2.4;fill:none}
.v5-weld-svg .v5-weld-arrowhead{fill:var(--v5-accent);stroke:none}
.v5-weld-svg .v5-weld-dim,.v5-weld-svg .v5-weld-throat{stroke:var(--v5-muted);stroke-width:1.2;fill:none}
.v5-weld-svg .v5-weld-throat{stroke-dasharray:3 3}
.v5-weld-svg .v5-weld-dim-head{fill:none;stroke:var(--v5-muted);stroke-width:1.5}
.v5-weld-svg .v5-weld-extension{stroke:var(--v5-line);stroke-width:1}
.v5-weld-svg .v5-weld-view-title{font-weight:700;font-size:11px;fill:var(--v5-muted)}
.v5-weld-svg .v5-weld-load-label{font-weight:700;font-size:11px;fill:var(--v5-ink)}
.v5-weld-svg .v5-weld-dim-label{font-weight:650;font-size:10px;fill:var(--v5-ink)}
.v5-weld-svg .v5-weld-note{font-size:9px;fill:var(--v5-muted)}
.v5-weld-legend{display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:6px;padding:9px 11px;border-top:1px solid var(--v5-line);font-size:9px;color:var(--v5-muted)}
.v5-weld-legend span{display:inline-flex;align-items:center;gap:6px}
.v5-weld-legend i{width:13px;height:7px;border-radius:2px;display:inline-block}
.v5-weld-legend i.weld{background:var(--v5-accent)}
.v5-weld-legend i.plate{background:color-mix(in srgb,var(--v5-ink) 12%,var(--v5-bg));border:1px solid var(--v5-line)}
@media(max-width:700px){.v5-weld-diagram-head{align-items:flex-start;flex-direction:column;gap:3px}.v5-weld-diagram-head span{text-align:left}.v5-weld-purpose{padding:13px 14px}.v5-weld-legend{gap:7px 12px}}

/* Phase 7 — responsive, keyboard and accessibility hardening */
body.v5-active{overflow-x:clip}
.v5-active #app{outline:none;scroll-margin-top:96px}
.v5-active a:focus-visible,.v5-active button:focus-visible,.v5-active input:focus-visible,.v5-active select:focus-visible,.v5-active textarea:focus-visible,.v5-active summary:focus-visible,[role="option"]:focus-visible{outline:3px solid color-mix(in srgb,var(--v5-accent) 82%,white)!important;outline-offset:3px!important;border-radius:6px}
.v5-skip:focus{position:fixed!important;clip:auto!important;clip-path:none!important;width:auto!important;height:auto!important;overflow:visible!important;white-space:normal!important;top:8px!important;left:8px!important;padding:11px 14px!important;border:2px solid var(--v5-accent);border-radius:8px;background:var(--v5-panel)!important;color:var(--v5-ink)!important;text-decoration:none;box-shadow:0 12px 30px #0003}
.v5-button,.v5-icon,.v5-star,.v5-reference-categories button,.v5-filters button{touch-action:manipulation}
.v5-report-dialog{width:min(680px,calc(100vw - 24px))}.v5-report-intro{margin:-6px 0 18px;color:var(--v5-muted);font-size:12px;line-height:1.55}
.v5-chart{max-width:100%;overflow:hidden}.v5-chart svg{display:block;max-width:100%;height:auto}.v5-table-scroll{overscroll-behavior-inline:contain;-webkit-overflow-scrolling:touch}.v5-table-scroll:focus-within{outline:2px solid color-mix(in srgb,var(--v5-accent) 55%,transparent);outline-offset:2px}
.v5-diagram svg,.v5-model-svg,.v5-weld-svg{max-width:100%;height:auto}.v5-model-form,.v5-output,.rdm-editor,.rdm-work{min-width:0}
@media(max-width:1200px){.v5-page{padding-inline:28px}.v5-studio{grid-template-columns:minmax(285px,350px) minmax(0,1fr);gap:18px}.v5-panel{padding:20px}.v5-kpis{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:1024px){.v5-nav{padding-inline:18px}.v5-page{padding:28px 20px 64px}.v5-studio{grid-template-columns:1fr}.v5-model-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.v5-model-form>fieldset{margin:0}.v5-model-form>.v5-row-actions,.v5-model-form>p,.v5-model-form>button{grid-column:1/-1}.v5-output{min-width:0}.v5-reference-layout{grid-template-columns:190px minmax(0,1fr)}.rdm-layout{grid-template-columns:1fr!important}.rdm-work{order:1}.rdm-editor{order:2}.rdm-toolbar-actions{width:100%}}
@media(max-width:768px){#v5-header{top:0!important;padding:0!important}.v5-nav{min-height:64px!important;border-radius:0!important;padding:9px 12px!important}.v5-icon,.v5-star{width:44px;height:44px;flex-basis:44px}.v5-account{min-height:44px}.v5-language select{min-height:44px;width:48px}.v5-page{padding:26px 16px 58px}.v5-hero{padding-top:10px}.v5-hero h1{font-size:clamp(32px,8vw,46px)!important}.v5-hero p{font-size:15px}.v5-panel{padding:16px}.v5-model-form{grid-template-columns:1fr}.v5-model-form>fieldset,.v5-model-form>.v5-row-actions,.v5-model-form>p,.v5-model-form>button{grid-column:1}.v5-fields,.v5-ref-form{grid-template-columns:1fr!important}.v5-field input,.v5-field select{min-height:46px;font-size:16px}.v5-button{min-height:44px}.v5-kpis,.rdm-result-panel .v5-kpis{grid-template-columns:1fr 1fr!important}.v5-reference-layout{grid-template-columns:1fr}.v5-reference-categories{display:flex;flex-direction:row;overflow-x:auto;padding:2px 0 8px;scrollbar-width:none}.v5-reference-categories::-webkit-scrollbar{display:none}.v5-reference-categories button{flex:0 0 auto;min-height:44px}.v5-footer{padding-inline:16px}.v5-dialog{width:calc(100vw - 20px);max-width:none;max-height:calc(100dvh - 20px);padding:18px;margin:10px}.v5-dialog .v5-row-actions{position:sticky;bottom:-18px;background:var(--v5-panel);padding:12px 0 2px}.v5-weld-svg{min-height:310px}.rdm-main-svg{min-height:260px}.rdm-row{overflow:visible}.rdm-toolbar-actions{display:flex;overflow-x:auto;padding-bottom:5px}.rdm-graph-tools{flex:0 0 auto}.geo-canvas svg{min-height:270px}}
@media(max-width:390px){.v5-page{padding-inline:12px}.v5-brand strong{display:none}.v5-nav-actions{gap:0}.v5-language{display:none}.v5-account{padding-inline:6px}.v5-account span{display:none}.v5-hero h1{font-size:34px!important}.v5-kpis,.rdm-result-panel .v5-kpis,.geo-kpis{grid-template-columns:1fr!important}.v5-stats{grid-template-columns:1fr 1fr!important}.v5-stats>div:last-child{grid-column:1/-1}.v5-weld-svg{min-height:285px}.rdm-material-row,.rdm-section-row,.rdm-node-row,.rdm-element-row,.rdm-support-row,.rdm-load-row,.rdm-dload-row{grid-template-columns:1fr!important}.geo-toolbar{grid-template-columns:1fr!important}.geo-toolbar>*{grid-column:1!important}.v5-fluid-node{flex-basis:125px}}
@media(max-width:360px){.v5-nav{padding-inline:8px!important}.v5-page{padding-inline:10px}.v5-hero h1{font-size:31px!important}.v5-panel{padding:13px}.v5-button{padding-inline:11px}.v5-row-actions{gap:7px}.v5-tool-card{padding:17px}.v5-dialog{width:calc(100vw - 12px);margin:6px;padding:14px}.v5-weld-purpose{padding:11px 12px}.v5-weld-svg{min-height:270px}}
@media(prefers-contrast:more){body.v5-active{--v5-line:color-mix(in srgb,var(--v5-ink) 52%,transparent);--v5-muted:color-mix(in srgb,var(--v5-ink) 78%,transparent)}.v5-button,.v5-field input,.v5-field select{border-width:2px}}

/* V5.1 launch polish: one canonical MECHALYSE emblem + uniform Pro CTA. */
.v5-brand-mark{width:38px;height:38px;display:grid;place-items:center;flex:0 0 38px;border:1px solid color-mix(in srgb,var(--v5-accent) 38%,transparent);border-radius:12px;background:color-mix(in srgb,var(--v5-accent) 9%,var(--v5-panel));color:var(--v5-accent)}
.v5-brand-mark svg{width:26px;height:26px;display:block}
.v5-pro-gate{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:18px;margin:0 0 18px;padding:18px 20px;border:1px solid color-mix(in srgb,var(--v5-accent) 24%,var(--v5-line));border-radius:16px;background:color-mix(in srgb,var(--v5-accent) 7%,var(--v5-panel));color:var(--v5-ink)}
.v5-pro-gate>div{display:grid;gap:4px}.v5-pro-gate strong{font-size:15px}.v5-pro-gate span{font-size:12px;line-height:1.5;color:var(--v5-muted)}
@media(max-width:560px){.v5-brand-mark{width:30px;height:30px;flex-basis:30px}.v5-pro-gate{align-items:stretch;flex-direction:column}.v5-pro-gate .v5-button{width:100%}}