/* ===== Taken from the 6BA-JK spec-sheet mockup: tokens, header, nav, footer ===== */
:root{
  --navy:#00376C; --navy-2:#0b2547; --ink:#1d2533; --text:#37404F; --muted:#6b7587;
  --blue:#1481AE; --line:#e3e8ef; --bg:#f5f7fa; --card:#fff;
  --radius:14px; --shadow:0 10px 30px rgba(10,30,60,.07),0 2px 6px rgba(10,30,60,.05);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.6;font-size:16px;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px}
.mock-flag{background:#fff6d6;color:#6b5200;text-align:center;font-size:12.5px;padding:6px 12px;border:1px solid #f0e2a8}
.eyebrow{display:block;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);margin:0 0 6px}
h2{font-size:24px;letter-spacing:-.01em;color:var(--ink);margin:0 0 18px;line-height:1.2}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
section.block{padding:44px 0 0}
footer{background:#0d1726;color:#9aa8bd;margin-top:56px;padding:44px 0 26px;font-size:14px}
.fgrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px}
footer h4{color:#fff;margin:0 0 12px;font-size:14px;letter-spacing:.08em;text-transform:uppercase}
footer a{color:#cfd9e8}
footer ul{list-style:none;margin:0;padding:0;line-height:2}
.fbot{border-top:1px solid #223047;margin-top:28px;padding-top:20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px}
@media (max-width:1024px){.fbot span:last-child{flex-basis:100%;text-align:center}}
/* ===== Site header: store logo banner (unchanged artwork) + redesigned main-site navigation ===== */
@font-face{font-family:"Open Sans";font-style:normal;font-weight:300 800;font-stretch:100%;font-display:swap;src:url(open-sans.woff2) format("woff2")}
:root{--font:"Open Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;--yellow:#fcee21}
.wrap{max-width:1180px;padding:0 32px}
.brand{background:#fff}
.brand a{display:block;max-width:1000px;margin:0 auto;padding:10px 15px 0}
.brand img{display:block;width:960px;max-width:100%;height:auto}
.mainnav{position:sticky;top:0;z-index:80;background:var(--navy-2);border-bottom:1px solid rgba(255,255,255,.06)}
.nav-in{display:flex;align-items:center;height:58px;gap:24px}
.navlinks{list-style:none;margin:0;padding:0;display:flex;height:100%;gap:4px}
.navlinks li{display:flex}
.navlinks a{display:flex;align-items:center;padding:0 14px;color:rgba(255,255,255,.78);font-size:15px;font-weight:600;border-bottom:3px solid transparent;border-top:3px solid transparent;transition:color .15s,border-color .15s}
.navlinks a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.35)}
.navlinks a[aria-current]{color:#fff;border-bottom-color:var(--yellow)}
.nav-r{margin-left:auto;display:flex;align-items:center;gap:20px}
.call{color:#fff;font-size:14px;line-height:1.2;white-space:nowrap}
.call small{display:block;color:rgba(255,255,255,.6);font-size:11px;letter-spacing:.08em;text-transform:uppercase}
.call:hover{color:var(--yellow)}
.store{display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:8px;background:var(--yellow);color:var(--navy-2);font-weight:700;font-size:14.5px;white-space:nowrap}
.store:hover{background:#fff}
.burger{display:none}
.wrap.crumbs{font-size:13px;color:var(--muted);margin-top:22px;margin-bottom:0}
.crumbs a{color:var(--muted)}.crumbs a:hover{color:var(--navy)}
.crumbs span{margin:0 8px;color:#b5bfcc}
@media (max-width:1180px){ .wrap{padding:0 28px} .navlinks a{padding:0 11px} .call small{display:none} }
@media (max-width:1100px) and (orientation:portrait), (max-width:900px){ .nav-in{gap:12px} .navlinks a{padding:0 10px;font-size:14.5px} .nav-r{gap:14px} }
@media (max-width:760px){
  .wrap{padding:0 18px}
  .brand a{padding:10px 15px 0}
  .nav-in{height:54px}
  .burger{display:flex;align-items:center;gap:10px;background:none;border:0;color:#fff;font:600 15px var(--font);padding:0;cursor:pointer}
  .burger i{display:block;width:20px;height:2px;background:#fff;position:relative;border-radius:2px;transition:background .2s}
  .burger i:before,.burger i:after{content:"";position:absolute;left:0;width:20px;height:2px;background:#fff;border-radius:2px;transition:transform .2s}
  .burger i:before{top:-6px}.burger i:after{top:6px}
  .mainnav.open .burger i{background:transparent}
  .mainnav.open .burger i:before{transform:translateY(6px) rotate(45deg)}
  .mainnav.open .burger i:after{transform:translateY(-6px) rotate(-45deg)}
  .nav-r .call{display:none}
  .store{height:36px;padding:0 14px;font-size:14px}
  .navlinks{display:none;position:absolute;left:0;right:0;top:100%;height:auto;flex-direction:column;gap:0;background:var(--navy-2);padding:6px 0 14px;box-shadow:0 14px 28px rgba(0,0,0,.25)}
  .mainnav.open .navlinks{display:flex}
  .navlinks a{padding:14px 18px;font-size:16px;border:0;border-left:3px solid transparent;width:100%}
  .navlinks a[aria-current]{border-left-color:var(--yellow);background:rgba(255,255,255,.05)}
  .navlinks .m-call{display:flex}
  .navlinks .m-call a{color:var(--yellow)}
  .wrap.crumbs{margin-top:16px;font-size:12.5px}

}
@media (min-width:761px){ .navlinks .m-call{display:none} }
@media (max-width:760px){ footer{margin-top:40px} .fgrid{grid-template-columns:1fr;gap:24px} }

/* ===== Calculator pages ===== */
:root{--ok:#17803d;--ok-bg:#eaf7ef;--ok-line:#b7e2c5;--bad:#c62828;--bad-bg:#fdeeee;--bad-line:#f3c0c0;--field:#cdd6e2;--soft:#f6f9fc;--ease:cubic-bezier(.2,.7,.2,1)}
.skip{position:absolute;left:12px;top:-60px;z-index:200;background:var(--yellow);color:var(--navy-2);font-weight:700;padding:10px 16px;border-radius:8px}
.skip:focus{top:12px}
:focus-visible{outline:3px solid rgba(20,129,174,.55);outline-offset:2px}
main:focus{outline:0}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 34px;border-radius:10px;font-weight:700;font-size:16px;letter-spacing:.04em;font-family:var(--font);background:linear-gradient(180deg,#0a4c92,var(--navy));color:#fff;box-shadow:0 8px 20px rgba(0,55,108,.25);transition:box-shadow .2s,transform .15s;border:0;cursor:pointer}
.btn:hover{box-shadow:0 10px 26px rgba(0,55,108,.38)}.btn:active{transform:scale(.98)}
.btn-s{font:700 13.5px var(--font);color:var(--navy);background:#fff;border:1px solid #c9d6e6;border-radius:8px;padding:8px 14px;cursor:pointer;white-space:nowrap}
.btn-s:hover{border-color:var(--navy)}

/* title card */
.title{padding:20px 0 0}
.hero{padding:28px 34px;display:flex;gap:32px;align-items:center;justify-content:space-between}
h1{font-size:36px;line-height:1.12;letter-spacing:-.02em;color:var(--ink);margin:0 0 8px}
.lede{margin:0;max-width:640px;font-size:17px;color:var(--text)}
.chips{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.chips li{font-size:12.5px;font-weight:600;color:var(--navy);background:#eef4fb;border:1px solid #d7e4f2;border-radius:999px;padding:4px 12px}
.switch{flex:0 0 auto;display:flex;flex-direction:column;gap:6px;min-width:220px}
.switch-k{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-left:4px}
.switch a{display:flex;align-items:center;gap:10px;padding:10px 14px;border:1px solid var(--line);border-radius:10px;color:var(--ink);font-weight:600;font-size:14.5px;transition:border-color .15s,background .15s}
.switch a:hover{border-color:#b8c8dc;background:var(--soft)}
.switch a[aria-current]{background:var(--navy);border-color:var(--navy);color:#fff}
.switch svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}

/* disclaimer gate: shown (and the calculator locked) until "I understand" */
.ico{width:22px;height:22px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.gate{position:relative;margin-top:18px;display:flex;gap:22px;align-items:flex-start;padding:26px 30px;border:1px solid #e9d98f;background:linear-gradient(180deg,#fffdf3,#fff8dc);box-shadow:0 14px 36px rgba(90,70,0,.12);overflow:hidden}
.gate:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--yellow)}
.gate-i{flex:0 0 auto;width:52px;height:52px;border-radius:14px;background:#0b2547;display:grid;place-items:center}
.gate-i svg{width:28px;height:28px;fill:none;stroke:var(--yellow);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.gate-t{flex:1;min-width:0}
.gate .eyebrow{color:#8a6d00}
.gate h2{margin:0 0 8px;font-size:22px;line-height:1.25;color:var(--ink);letter-spacing:-.01em}
.gate p{margin:0;max-width:820px;font-size:15.5px;line-height:1.6;color:#4a4020}
.gate-f{margin:18px 0 0;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.gate-b{min-width:200px}
.gate-b:focus-visible{outline:3px solid #f2c200;outline-offset:3px}
.gate-s{font-size:13px;color:#6b5f35}
.gate.bye{animation:bye .25s var(--ease) forwards}
form[data-gated] .panel{opacity:.5;filter:grayscale(.4);pointer-events:none;user-select:none}
form[data-gated] .livehint{visibility:hidden}
.gatecard{padding:18px}
.gate-ph{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;padding:44px 20px;border:2px dashed #d5deea;border-radius:14px;background:var(--soft);color:var(--text)}
.gate-ph .lock{width:54px;height:54px;border-radius:50%;background:#e7eef7;display:grid;place-items:center;margin-bottom:6px}
.gate-ph .lock svg{width:26px;height:26px;fill:none;stroke:var(--navy);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.gate-ph strong{font-size:18px;color:var(--ink)}
.gate-ph p{margin:0 0 10px;font-size:14.5px;color:var(--muted)}
.dock.gate{display:none!important}
@media (max-width:760px){
  .gate{flex-direction:column;gap:14px;padding:22px 20px 22px 24px;margin-top:14px}
  .gate-i{display:none}
  body:has(#gate) .hero .switch{display:none}
  .gate h2{font-size:20px}.gate p{font-size:15px}
  .gate-f{flex-direction:column;align-items:stretch;gap:10px}.gate-b{width:100%}.gate-s{text-align:center}
  .gate-ph{padding:30px 16px}
}
@keyframes bye{to{opacity:0;transform:translateY(-6px)}}

/* workbench: inputs left, sticky results right */
.work{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.12fr);gap:24px;align-items:start;margin-top:24px}
.work.mast{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr)}
.inputs{display:grid;gap:20px;min-width:0}
.results{position:sticky;top:74px;min-width:0}
#out{display:grid;gap:16px}
.panel{padding:24px 26px}
.ph{display:flex;gap:14px;align-items:flex-start;margin-bottom:18px}
.ph h2{font-size:19px;margin:2px 0 2px}
.ph p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.5}
.step{flex:0 0 auto;width:30px;height:30px;border-radius:50%;background:var(--navy);color:#fff;font-weight:700;font-size:14px;display:grid;place-items:center}
.field{margin:0 0 16px;min-width:0}
.field label,.f label{display:flex;align-items:center;gap:8px;font-weight:600;font-size:14px;color:var(--ink);margin:0 0 6px;line-height:1.3}
.field small{display:block;color:var(--muted);font-size:12.5px;margin-top:5px;line-height:1.45}
.sym{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:6px;background:#eef4fb;color:var(--navy);font-style:italic;font-weight:700;font-family:Georgia,serif;font-size:14px;flex:0 0 auto}
.in{position:relative;display:flex;align-items:stretch}
.in input,.in select{width:100%;font:600 16px var(--font);color:var(--ink);background:#fff;border:1px solid var(--field);border-radius:10px;padding:11px 14px;min-height:48px;transition:border-color .15s,box-shadow .15s,background .15s;font-variant-numeric:tabular-nums}
.in input{padding-right:58px}
.in .u{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:13px;font-weight:600;pointer-events:none;white-space:nowrap}
.in input:hover,.in select:hover{border-color:#aebdd0}
.in input:focus,.in select:focus{outline:0;border-color:var(--blue);box-shadow:0 0 0 4px rgba(20,129,174,.16)}
.in input[aria-invalid=true],.in select[aria-invalid=true]{border-color:var(--bad);background:#fff8f8;box-shadow:0 0 0 3px rgba(198,40,40,.1)}
.in select{appearance:none;-webkit-appearance:none;cursor:pointer;font-weight:600;background-image:linear-gradient(45deg,transparent 50%,#6b7587 50%),linear-gradient(135deg,#6b7587 50%,transparent 50%);background-position:calc(100% - 19px) 50%,calc(100% - 14px) 50%;background-size:5px 5px;background-repeat:no-repeat;padding-right:38px}
.go{width:100%;margin-top:6px}
.livehint{display:none;align-items:center;gap:8px;justify-content:center;margin:2px 0 0;font-size:13px;color:var(--muted)}
.dot{width:8px;height:8px;border-radius:50%;background:#2fb15b;box-shadow:0 0 0 3px rgba(47,177,91,.18)}
.js .go{display:none}.js .livehint{display:flex}
.busy .dot{animation:pulse .8s ease-in-out infinite}
@keyframes pulse{50%{opacity:.35}}
.g2,.g3{display:grid;gap:0 16px}.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}

.howto{padding:0;overflow:hidden}
.howto summary{cursor:pointer;list-style:none;padding:16px 26px;font-weight:700;color:var(--ink);font-size:15px;display:flex;align-items:center;justify-content:space-between}
.howto summary::-webkit-details-marker{display:none}
.howto summary:after{content:"";width:8px;height:8px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg);transition:transform .2s;margin-left:12px}
.howto[open] summary:after{transform:rotate(-135deg)}
.howto-b{padding:0 26px 20px;font-size:14px;color:var(--text)}
.howto-b p{margin:0 0 10px}
.howto-b ul{margin:0;padding-left:18px}.howto-b li{margin:6px 0}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px;background:#f1f5fa;border:1px solid #e3e8ef;border-radius:6px;padding:1px 6px;color:var(--ink);white-space:nowrap}

/* results */
.res{padding:24px 26px}
.errcard{padding:18px}
.errs{display:flex;gap:12px;padding:14px 16px;border-radius:12px;background:var(--bad-bg);border:1px solid var(--bad-line);color:#8f1717;font-size:14.5px}
.errs strong{display:block;margin-bottom:2px}
.errs p{margin:0}.errs ul{margin:0;padding-left:18px}
.hero-kpi{display:flex;flex-direction:column;padding:4px 2px 18px;border-bottom:1px solid var(--line);margin-bottom:16px}
.k{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.hero-kpi .big{display:flex;align-items:baseline;gap:8px;margin-top:4px}
.hero-kpi .big .v{font-size:56px;font-weight:700;letter-spacing:-.03em;line-height:1.05;color:var(--navy)}
.big small,.kv small{font-size:15px;font-weight:600;color:var(--muted)}
.hero-kpi .sub{font-size:14px;color:var(--muted);margin-top:4px}
.v{font-variant-numeric:tabular-nums}
.kpis{display:grid;gap:12px}
.kpis.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.kpi{border:1px solid var(--line);border-radius:12px;padding:14px 16px;background:var(--soft);min-width:0}
.kpi .k{display:block;letter-spacing:.06em;font-size:11.5px;line-height:1.35}
.kv{display:flex;align-items:baseline;gap:6px;margin-top:6px;flex-wrap:wrap}
.kv .v{font-size:28px;font-weight:700;color:var(--ink);letter-spacing:-.01em;line-height:1.15}
.kpi.hi{background:linear-gradient(180deg,#0a4c92,var(--navy));border-color:var(--navy)}
.kpi.hi .k,.kpi.hi small{color:rgba(255,255,255,.75)}.kpi.hi .v{color:#fff}
.ok{color:var(--ok)!important}.bad{color:var(--bad)!important}
.flash{animation:flash .6s var(--ease)}
@keyframes flash{0%{background:rgba(252,238,33,.55);border-radius:4px}100%{background:transparent}}
.fine{margin:0;font-size:12.5px;color:var(--muted);text-align:center;padding:0 10px}

.diagram{margin:0;padding:16px 18px 14px}
.diagram figcaption{display:flex;justify-content:space-between;align-items:baseline;font-size:13.5px;color:var(--ink);margin:0 2px 8px}
.diagram figcaption span{font-size:12px;color:var(--muted)}
.dia{display:block;width:100%;height:auto;font-family:var(--font);font-size:13px}
.legend{list-style:none;display:flex;flex-wrap:wrap;gap:6px 18px;margin:8px 2px 0;padding:0;font-size:12.5px;color:var(--muted)}
.legend i{display:inline-block;width:18px;height:0;border-top:3px solid;vertical-align:middle;margin-right:7px}
.lg-wire{border-color:#1481AE!important}.lg-r{border-top-style:dashed!important;border-color:#e08a00!important}.lg-ant{border-color:#00376C!important;height:6px!important;border-radius:2px}
/* guy diagram */
.guy-dia .grid line{stroke:#eef2f7;stroke-width:1}
.guy-dia .ground{stroke:#5b6676;stroke-width:2}
.guy-dia .hatch{stroke:#c5cdd8;stroke-width:1.5}
.guy-dia .tower line{stroke:var(--navy);stroke-width:2}
.guy-dia .lace{fill:none;stroke:var(--navy);stroke-width:1;opacity:.7}
.guy-dia .wire{stroke:#1481AE;stroke-width:2.5;stroke-linecap:round}
.guy-dia .arc{fill:none;stroke:#1481AE;stroke-width:1.5}
.guy-dia .ring{fill:var(--yellow);stroke:var(--navy);stroke-width:2}
.guy-dia .anchor{fill:#5b6676}
.guy-dia .rline{stroke:#e08a00;stroke-width:2.5;stroke-dasharray:6 4}
.guy-dia .ant{fill:var(--navy)}
.guy-dia .hit{fill:#fff;stroke:#e08a00;stroke-width:2.5}
.dia text{paint-order:stroke;stroke:#fff;stroke-width:4px;stroke-linejoin:round;fill:var(--ink)}
.dia .lbl{font-weight:700;font-size:13.5px}
.dia .lbl.b{fill:#0f6c93}.dia .lbl.r{fill:#a45f00}
.dia .sm{font-size:11.5px;fill:var(--muted)}
.dia .dim line{stroke:#9aa6b6;stroke-width:1}
.dia .dim .dl{stroke:#5b6676}
.dia .ah{fill:#5b6676}
.dia .dimt{font-size:12.5px;font-weight:600;fill:#37404F}
/* mast diagram */
.mast-dia .gl{stroke:#eef2f7}
.mast-dia .scale text{font-size:11px;fill:#8a94a5}
.mast-dia .scale .ax{font-size:11px;fill:var(--muted);font-weight:600}
.mast-dia .tower2 path{fill:#f3f6fa;stroke:var(--navy);stroke-width:2}
.mast-dia .tower2 .lace{fill:none;stroke-width:1;opacity:.6}
.mast-dia .plate{fill:var(--navy)}
.mast-dia .mast{fill:#8c98a8;stroke:#5b6676;stroke-width:1}
.mast-dia .mast.over{fill:#e8a3a3;stroke:var(--bad)}
.mast-dia .hot{fill:none;stroke:var(--bad);stroke-width:2;stroke-dasharray:3 3}
.mast-dia .wind{stroke:#1481AE;stroke-width:2;opacity:.75}
.mast-dia .wah{fill:#1481AE}
.mast-dia .windt{font-size:12px;font-weight:700;fill:#0f6c93}
.mast-dia .boom{stroke:var(--navy);stroke-width:3.5;stroke-linecap:round}
.mast-dia .el{stroke:var(--navy);stroke-width:2}
.mast-dia .lead{fill:none;stroke:#b6c1cf;stroke-width:1}
.mast-dia .an{font-size:12.5px;font-weight:700}
.mast-dia .badge{fill:var(--blue)}

/* mast: antenna rows */
.ants{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.arow{display:grid;grid-template-columns:34px minmax(0,1fr);gap:0 12px;padding:14px 14px 12px;border:1px solid var(--line);border-radius:12px;background:#fff;transition:background .2s,border-color .2s}
.arow:focus-within{border-color:#b9cde3;box-shadow:0 0 0 4px rgba(20,129,174,.07)}
.anum{width:34px;height:34px;border-radius:9px;background:var(--navy);color:#fff;font-weight:700;display:grid;place-items:center;margin-top:24px}
.ain{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr) minmax(0,1fr);gap:10px}
.f{min-width:0}.f label{font-size:12.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}
.ain .in input,.ain .in select{min-height:44px;padding-top:9px;padding-bottom:9px;font-size:15px}
.ain .in input{padding-right:52px}
.aout{grid-column:2;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:10px 0 0;padding:8px 10px;border-radius:9px;background:var(--soft)}
.aout div{min-width:0}
.aout dt{font-size:11px;font-weight:600;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.aout dd{margin:0;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;font-size:15px}
.aout small{font-weight:600;color:var(--muted);font-size:11.5px}
.arow.empty{background:#fbfcfd}
.arow.empty .anum{background:#c3cdd9}
.arow.empty .aout{opacity:.55}

/* mast: verdict + utilisation */
.verdict{display:flex;align-items:center;gap:14px;border-radius:14px;padding:16px 18px;margin-bottom:18px;border:1px solid;transition:background .3s,border-color .3s,color .3s}
.verdict.pass{background:var(--ok-bg);border-color:var(--ok-line);color:var(--ok)}
.verdict.fail{background:var(--bad-bg);border-color:var(--bad-line);color:var(--bad)}
.vi{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:currentColor;flex:0 0 auto}
.vi svg{width:26px;height:26px;fill:none;stroke:#fff;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.pass .i-bad,.fail .i-ok{display:none}
.verdict .big{display:block;font-size:26px;font-weight:800;letter-spacing:.05em;line-height:1.1}
.verdict .sub{display:block;font-size:13.5px;font-weight:600;color:var(--text);margin-top:2px}
.util{margin-bottom:18px}
.ul{display:flex;justify-content:space-between;align-items:baseline;gap:10px;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:8px}
.ul b{font-size:20px;font-variant-numeric:tabular-nums}
.bar{position:relative;height:14px;border-radius:999px;background:#e9eef4;overflow:hidden}
.bar i{position:absolute;left:0;top:0;bottom:0;border-radius:999px;background:linear-gradient(90deg,#2fb15b,#17803d);transition:width .45s var(--ease)}
.bar i.b50{top:auto;height:4px;bottom:0;background:rgba(0,55,108,.55)}
.bar.over i:first-child{background:repeating-linear-gradient(135deg,#d93636 0 10px,#c62828 10px 20px)}
.ul2{display:flex;flex-wrap:wrap;gap:4px 16px;justify-content:space-between;margin-top:8px;font-size:12.5px;color:var(--muted)}
.ul2 b{color:var(--ink);font-variant-numeric:tabular-nums}
.sw{display:inline-block;width:12px;height:6px;border-radius:3px;margin-right:6px;vertical-align:middle}.sw.d{background:#2fb15b}.sw.f{background:rgba(0,55,108,.55);height:4px}
.rt{width:100%;border-collapse:collapse;margin-top:18px;font-size:14px;font-variant-numeric:tabular-nums}
.rt caption{text-align:left;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding-bottom:6px}
.rt th,.rt td{padding:9px 6px;border-top:1px solid var(--line);text-align:right;white-space:nowrap}
.rt thead th{border-top:0;font-size:12px;color:var(--muted);font-weight:700;padding-top:0}
.rt tbody th{text-align:left;font-weight:600;color:var(--text);white-space:normal}
.rt td{font-weight:700;color:var(--ink)}.rt td small{font-weight:600;color:var(--muted)}
.rt tr.hl th,.rt tr.hl td{background:#f2f7fc}
.rt td[colspan]{text-align:right}

/* phone/tablet bottom bar with the verdict */
.dock{display:none}
@media (max-width:1023px){
  .dock{position:fixed;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));z-index:60;display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:14px;color:#fff;box-shadow:0 12px 30px rgba(10,30,60,.3);font-size:13.5px;transition:background .3s,transform .25s var(--ease),opacity .25s}
  .dock.pass{background:#146c34}.dock.fail{background:#b3261e}.dock.err{background:#4a5566}
  .dock .dk-s{font-weight:800;letter-spacing:.04em;white-space:nowrap}
  .dock .dk-m{flex:1;opacity:.9;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .dock .dk-go{font-weight:700;white-space:nowrap;opacity:.9}
  .dock.away{transform:translateY(140%);opacity:0;pointer-events:none}
  body.has-dock footer,body:has(.dock) footer{padding-bottom:90px}
}

/* ---- responsive ---- */
@media (max-width:1180px){ .work.mast{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr)} }
@media (max-width:1023px){
  .work,.work.mast{grid-template-columns:minmax(0,1fr)}
  .results{position:static}
  .hero{flex-direction:column;align-items:stretch;gap:20px}
  .switch{flex-direction:row;flex-wrap:wrap;min-width:0}.switch-k{display:none}.switch a{flex:1;justify-content:center}
  .guy .inputs{display:block}
  #out.split{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
}
@media (min-width:700px) and (max-width:1023px){
  .work.mast #out{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);align-items:start}
  .work.mast #out .fine{grid-column:1/-1}
  .work.guy-w .inputs .panel .fields3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 16px}
}
@media (max-width:760px){
  body{font-size:15.5px}
  .title{padding:14px 0 0}
  .hero{padding:22px 20px}
  h1{font-size:27px}
  .lede{font-size:16px}
  .switch a{padding:9px 10px;font-size:13.5px}
  .work{margin-top:16px;gap:16px}
  .panel,.res{padding:20px 16px}
  .howto summary{padding:15px 16px}.howto-b{padding:0 16px 16px}
  .hero-kpi .big .v{font-size:44px}
  .kv .v{font-size:23px}
  .g3{grid-template-columns:repeat(2,minmax(0,1fr))}.g3 .field:last-child{grid-column:1/-1}
  .arow{grid-template-columns:minmax(0,1fr);padding:12px}
  .anum{position:absolute;margin:0;width:26px;height:26px;font-size:13px;border-radius:7px}
  .arow{position:relative}
  .ain{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .ain .model{grid-column:1/-1;padding-left:36px}
  .ain .model label{line-height:26px;margin-bottom:6px}
  .aout{grid-column:1;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 12px}
  .verdict .big{font-size:22px}
  .rt{font-size:13.5px}.rt th,.rt td{padding:8px 4px}
  .dia{font-size:15px}.dia .lbl{font-size:15.5px}.dia .dimt{font-size:14.5px}.dia .sm{font-size:13px}
  .mast-dia .an{font-size:13.5px}
}
@media (max-width:400px){ .ul2{justify-content:flex-start} .g2{grid-template-columns:minmax(0,1fr)} }
@media (prefers-reduced-motion:reduce){ *,*:before,*:after{animation:none!important;transition:none!important} }

/* ---- print ---- */
@media print{
  @page{margin:14mm}
  body{background:#fff;font-size:11pt;color:#000}
  .mainnav,.crumbs,.skip,.switch,.dock,.go,.livehint,footer .fgrid,.mock-flag,.chips{display:none!important}
  .wrap{padding:0;max-width:none}
  .brand a{padding:0}.brand img{width:70mm}
  .title{padding:4mm 0 0}.hero{padding:4mm 5mm}h1{font-size:18pt}.lede{font-size:11pt}
  .card{box-shadow:none!important;border-color:#bbb!important}
  .work,.work.mast{display:flex;flex-direction:column;gap:4mm;margin-top:4mm}
  .results{position:static;order:-1}
  .inputs{display:grid;gap:4mm}
  #out{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:4mm;align-items:start}
  #out .fine,#out .sr{grid-column:1/-1}
  .panel,.res{padding:4mm 5mm}
  .ants{grid-template-columns:1fr 1fr;gap:3mm}
  .arow,.verdict,.rt,.kpis,.diagram,.util,.field{break-inside:avoid}
  .dia{max-height:95mm}
  .hero-kpi .big .v{font-size:30pt}
  .howto-b{display:block}.howto summary:after{display:none}
  .kpi.hi{background:#fff!important}.kpi.hi .v,.kpi.hi .k,.kpi.hi small{color:#000!important}
  .bar i{print-color-adjust:exact;-webkit-print-color-adjust:exact}
  footer{background:#fff;color:#333;margin-top:12px;padding:0}.fbot{border-color:#bbb}
}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media (max-width:1023px){
  .inputs{display:contents}
  .work>.inputs>.panel{order:1}.work>.results{order:2}.work>.inputs>.howto{order:3}
}
@media (max-width:760px){
  .aout{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;padding:8px}
  .aout .lg{display:none}
  .aout dd{font-size:14.5px}.aout small{display:block;font-size:11px;line-height:1.1}
  .mast-dia .an{font-size:15px}.mast-dia .sm{font-size:13.5px}.mast-dia .scale text,.mast-dia .scale .ax{font-size:13px}.mast-dia .windt{font-size:14px}
}
@media (max-width:760px){
  .guy-dia .lbl{font-size:19px}.guy-dia .dimt{font-size:17px}.guy-dia .sm{font-size:15px}
  .guy-dia text{stroke-width:5px}
}
@media print{
  footer,.howto{display:none!important}
  .inputs{display:grid!important}.work>.results{order:-1!important}
}
@media print{
  .field small,.ph p{display:none}
  .in input,.in select,.ain .in input,.ain .in select{min-height:0;padding:3px 8px;font-size:10pt;border-color:#bbb}
  .field{margin-bottom:6px}.ph{margin-bottom:8px}.arow{padding:8px}.aout{margin-top:6px;padding:4px 8px}
}
.guy-dia{max-width:620px;margin:0 auto}
@media (max-width:760px){ .chips{display:none} }

/* mast: design wind slider (shown with JavaScript only; it drives the Design Wind Velocity box) */
.windctl{display:none;padding:16px 20px 12px;margin-bottom:16px;border-top:4px solid var(--navy);--acc:var(--navy)}
.js .windctl{display:block}
.results:has(.verdict.pass) .windctl{--acc:var(--ok)}
.results:has(.verdict.fail) .windctl{--acc:var(--bad)}
form[data-gated] .windctl{opacity:.5;filter:grayscale(.4);pointer-events:none;user-select:none}
.wc-top{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:10px}
.wc-t{min-width:0}
.wc-t .k{display:block}
.wc-s{display:block;font-size:12.5px;color:var(--muted);line-height:1.4;margin-top:2px}
.wc-v{flex:0 0 auto;display:flex;align-items:baseline;gap:5px;line-height:1}
.wc-v output{font-size:34px;font-weight:800;letter-spacing:-.02em;color:var(--ink);font-variant-numeric:tabular-nums;min-width:2.1ch;text-align:right}
.wc-v small{font-size:14px;font-weight:700;color:var(--muted)}
.wc-row{display:flex;align-items:center;gap:12px}
.wc-b{flex:0 0 auto;width:44px;height:44px;border-radius:12px;border:1px solid #c9d6e6;background:#fff;color:var(--navy);display:grid;place-items:center;cursor:pointer;touch-action:manipulation;-webkit-user-select:none;user-select:none;transition:border-color .15s,background .15s,transform .1s}
.wc-b svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2.6;stroke-linecap:round}
.wc-b:hover{border-color:var(--navy);background:var(--soft)}
.wc-b:active{transform:scale(.94);background:#eef4fb}
.wc-b:disabled{cursor:default;opacity:.6}
#wc-range{flex:1;min-width:0;height:44px;margin:0;background:transparent;-webkit-appearance:none;appearance:none;cursor:pointer;touch-action:pan-y}
#wc-range:focus{outline:0}
#wc-range::-webkit-slider-runnable-track{height:8px;border-radius:999px;background:linear-gradient(90deg,var(--acc) 0 var(--p,36%),#e3e9f1 var(--p,36%) 100%)}
#wc-range::-moz-range-track{height:8px;border-radius:999px;background:#e3e9f1}
#wc-range::-moz-range-progress{height:8px;border-radius:999px;background:var(--acc)}
#wc-range::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:28px;height:28px;margin-top:-10px;border-radius:50%;background:#fff;border:3px solid var(--acc);box-shadow:0 2px 8px rgba(10,30,60,.25);transition:transform .12s,border-color .3s}
#wc-range::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:#fff;border:3px solid var(--acc);box-shadow:0 2px 8px rgba(10,30,60,.25)}
#wc-range:active::-webkit-slider-thumb{transform:scale(1.12)}
#wc-range:focus-visible::-webkit-slider-thumb{box-shadow:0 0 0 5px rgba(20,129,174,.3),0 2px 8px rgba(10,30,60,.25)}
#wc-range:focus-visible::-moz-range-thumb{box-shadow:0 0 0 5px rgba(20,129,174,.3)}
.wc-sc{display:grid;grid-template-columns:1fr auto 1fr;margin:0 56px;padding:0 5px;font-size:11.5px;font-weight:600;color:var(--muted);font-variant-numeric:tabular-nums}
.wc-sc span:last-child{text-align:right}
@media (max-width:760px){
  .windctl{padding:14px 14px 10px}
  .wc-v output{font-size:30px}
  .wc-row{gap:10px}
  .wc-sc{margin:0 54px}
}
@media print{ .windctl{display:none!important} }

/* crisper bold type (Open Sans 650, approved Oct 29 2026) */
body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}
.h1,.h2,.h3,h1,h2,h3{font-weight:650}.h1{letter-spacing:-.025em}.h2{letter-spacing:-.02em}.h3{letter-spacing:-.01em}
.motto q{font-weight:700;letter-spacing:.03em}
.eyebrow,.more,.btn,.store,.cap b{font-weight:650}

/* ===== ALHP call-out on the calculator pages ===== */
.alhp-co{position:relative;overflow:hidden;margin-top:16px;display:flex;align-items:center;gap:22px;padding:20px 26px 20px 24px;border-top:4px solid var(--navy);background:linear-gradient(120deg,#fff 55%,#f1f6fc)}
.alhp-co-i{flex:0 0 auto;width:52px;height:52px;border-radius:14px;background:linear-gradient(150deg,var(--navy-2),var(--navy));display:grid;place-items:center;box-shadow:0 8px 18px rgba(0,55,108,.22)}
.alhp-co-i svg{width:26px;height:26px;fill:none;stroke:var(--yellow);stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.alhp-co-t{flex:1;min-width:0}
.alhp-co-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:0 0 4px}
.alhp-co-top .eyebrow{margin:0}
.alhp-co-b{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--navy-2);background:var(--yellow);border:1px solid #e6d600;padding:3px 11px;border-radius:999px;line-height:1.5}
.alhp-co h2{font-size:20px;line-height:1.3;margin:0 0 2px}
.alhp-co p{margin:0;font-size:15px;color:var(--text)}
.alhp-co-go{flex:0 0 auto;gap:10px;white-space:nowrap}
.alhp-co-go svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s}
.alhp-co-go:hover svg{transform:translateX(3px)}
.alhp-co-go:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}
@media (max-width:900px){.alhp-co{flex-wrap:wrap}.alhp-co-t{flex-basis:calc(100% - 74px)}.alhp-co-go{margin-left:74px}}
@media (max-width:760px){.alhp-co{margin-top:14px;padding:18px 20px;gap:14px}.alhp-co-i{display:none}.alhp-co-top{gap:10px;margin-bottom:6px}.alhp-co-t{flex-basis:100%}.alhp-co h2{font-size:18px}.alhp-co p{font-size:14.5px}.alhp-co-go{margin-left:0;width:100%}}
@media print{.alhp-co{display:none}}