/* Bhagyoday Pumps — Apple-inspired design tokens.
   One accent (Action Blue), 400/600/700 weight ladder, hairlines not borders,
   no chrome shadows (only the product-image drop shadow), pill CTAs. */
:root{
  /* color */
  --primary:#0066cc; --primary-press:#0058b0; --link-on-dark:#2997ff;
  --text:#1d1d1f; --text-2:#6e6e73; --text-3:#86868b;
  --bg:#ffffff; --parchment:#f5f5f7; --tile-dark:#000000; --tile-dark-2:#1d1d1f;
  --hairline:#e0e0e0; --divider-soft:#f0f0f0;
  --on-dark:#f5f5f7; --on-dark-2:#a1a1a6;
  /* spacing (8pt) */
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px; --s9:96px; --s10:128px;
  /* radius */
  --r-sm:8px; --r-md:12px; --r-lg:18px; --r-xl:28px; --r-pill:980px;
  /* layout */
  --max:1080px; --wide:1280px; --gutter:22px;
  /* type */
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text",Inter,system-ui,"Helvetica Neue",Arial,sans-serif;
  --shadow-product:0 30px 60px -20px rgba(0,0,0,.28);
  --ease:cubic-bezier(.25,.1,.25,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:400 17px/1.47 var(--font);letter-spacing:-.022em;
  -webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.03em;line-height:1.08}
p{margin:0}
b,strong{font-weight:600}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}

.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.wrap-wide{max-width:var(--wide);margin:0 auto;padding:0 var(--gutter)}
.center{text-align:center}

/* ---------- type ramp ---------- */
.eyebrow{font-size:17px;font-weight:600;color:var(--text-2);letter-spacing:-.01em;margin-bottom:var(--s2)}
.display{font-size:clamp(40px,7vw,80px);letter-spacing:-.045em;line-height:1.04}
.h1{font-size:clamp(34px,5.2vw,56px);letter-spacing:-.04em}
.h2{font-size:clamp(28px,4vw,40px)}
.h3{font-size:clamp(21px,2.4vw,28px);letter-spacing:-.025em;line-height:1.14}
.lead{font-size:clamp(19px,2.2vw,24px);line-height:1.33;color:var(--text-2);letter-spacing:-.02em}
.body-2{font-size:15px;color:var(--text-2);letter-spacing:-.01em}
.small{font-size:13px;color:var(--text-3);letter-spacing:-.005em}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--hairline)}
.nav .in{max-width:var(--wide);margin:0 auto;padding:0 var(--gutter);height:64px;display:flex;align-items:center;gap:var(--s5)}
.nav .brand img{height:42px;width:auto}
.nav ul{list-style:none;margin:0 0 0 auto;padding:0;display:flex;gap:var(--s5)}
.nav ul a{color:var(--text);font-size:14px;letter-spacing:-.01em}
.nav ul a:hover,.nav ul a[aria-current]{color:var(--primary);text-decoration:none}
.nav .btn{padding:8px 16px;font-size:14px}
.menu-btn{display:none;margin-left:auto;background:none;border:0;padding:8px;cursor:pointer;color:var(--text)}
@media (max-width:900px){
  .nav ul{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;gap:0;background:#fff;
    border-bottom:1px solid var(--hairline);padding:var(--s2) var(--gutter) var(--s4)}
  .nav ul.open{display:flex}
  .nav ul li a{display:block;padding:var(--s3) 0;font-size:17px;border-bottom:1px solid var(--divider-soft)}
  .menu-btn{display:block}
  .nav .btn.cta-desk{display:none}
}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border-radius:var(--r-pill);
  background:var(--primary);color:#fff;font:400 17px/1 var(--font);letter-spacing:-.02em;padding:12px 22px;border:0;
  cursor:pointer;transition:transform .15s var(--ease),background .15s var(--ease);text-decoration:none}
.btn:hover{background:var(--primary-press);text-decoration:none}
.btn:active{transform:scale(.97)}
.btn.ghost{background:transparent;color:var(--primary);box-shadow:inset 0 0 0 1px var(--primary)}
.btn.ghost:hover{background:var(--primary);color:#fff}
.link{font-size:17px;white-space:nowrap}
.link:after{content:" ›"}
.ctas{display:flex;flex-wrap:wrap;gap:var(--s5);align-items:center;margin-top:var(--s5)}
.center .ctas{justify-content:center}

/* ---------- tiles ---------- */
.tile{padding:var(--s9) 0 0;overflow:hidden}
.tile.parch{background:var(--parchment)}
.tile.dark{background:var(--tile-dark);color:var(--on-dark)}
.tile.dark .lead,.tile.dark .eyebrow,.tile.dark .body-2{color:var(--on-dark-2)}
.tile.dark a{color:var(--link-on-dark)}
.tile.dark .btn{color:#fff}
.tile .product{margin:var(--s7) auto 0;max-width:760px;border-radius:var(--r-xl) var(--r-xl) 0 0;overflow:hidden;box-shadow:var(--shadow-product)}
.tile .product img{width:100%;aspect-ratio:16/9;object-fit:cover}
.pad{padding:var(--s9) 0}
.pad-sm{padding:var(--s8) 0}

/* split product tiles (2-up) */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:12px;max-width:var(--wide);margin:0 auto}
.grid2 .tile{border-radius:var(--r-lg);padding-top:var(--s8);text-align:center}
.grid2 .tile .product{max-width:86%}
@media (max-width:820px){.grid2{grid-template-columns:1fr}}

/* ---------- hero ---------- */
.hero{background:var(--parchment);padding:var(--s9) 0 0;text-align:center;overflow:hidden}
.hero .lead{max-width:680px;margin:var(--s4) auto 0}
.hero-img{max-width:900px;margin:var(--s8) auto 0;border-radius:var(--r-xl) var(--r-xl) 0 0;overflow:hidden;box-shadow:var(--shadow-product)}
.hero-img img{width:100%;aspect-ratio:16/8;object-fit:cover}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stats>div{padding:var(--s5) var(--s4);border-left:1px solid var(--hairline)}
.stats>div:first-child{border-left:0}
.stats b{display:block;font-size:clamp(32px,4vw,48px);font-weight:700;letter-spacing:-.04em;line-height:1.05}
.stats span{font-size:15px;color:var(--text-2)}
@media (max-width:820px){.stats{grid-template-columns:1fr 1fr}.stats>div:nth-child(3){border-left:0}
  .stats>div:nth-child(n+3){border-top:1px solid var(--hairline)}}

/* ---------- feature grid ---------- */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s7) var(--s6);margin-top:var(--s7)}
.features h3{font-size:21px;letter-spacing:-.02em;margin-bottom:var(--s2);line-height:1.2}
.features p{font-size:17px;color:var(--text-2)}
.features .ico{width:36px;height:36px;color:var(--primary);margin-bottom:var(--s3)}
.tile.dark .features p{color:var(--on-dark-2)}
@media (max-width:820px){.features{grid-template-columns:1fr;gap:var(--s6)}}
.features.two{grid-template-columns:repeat(2,1fr)}
@media (max-width:820px){.features.two{grid-template-columns:1fr}}

/* ---------- cards on parchment (no shadow: surface change only) ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s4);margin-top:var(--s7)}
.card{background:#fff;border-radius:var(--r-lg);padding:var(--s6)}
.card h3{font-size:21px;margin-bottom:var(--s2);letter-spacing:-.02em}
.card p{color:var(--text-2);font-size:17px}
.parch .card{background:#fff}
.bg-white .card{background:var(--parchment)}
@media (max-width:820px){.cards{grid-template-columns:1fr}}

/* application list */
.apps{display:grid;grid-template-columns:repeat(4,1fr);gap:0 var(--s6);margin-top:var(--s7);padding:0;list-style:none}
.apps li{padding:var(--s4) 0;border-top:1px solid var(--hairline);font-size:17px}
@media (max-width:820px){.apps{grid-template-columns:1fr 1fr}}

/* chips */
.chips{display:flex;flex-wrap:wrap;gap:var(--s2);margin-top:var(--s5);padding:0;list-style:none}
.chips li{background:var(--parchment);border-radius:var(--r-pill);padding:8px 16px;font-size:15px}
.parch .chips li{background:#fff}

/* ---------- product page ---------- */
.ph{background:var(--parchment);padding:var(--s8) 0 0;overflow:hidden}
.ph .crumbs{font-size:13px;color:var(--text-3);margin-bottom:var(--s5)}
.ph .crumbs a{color:var(--text-3)}
.ph-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:var(--s7);align-items:end}
.ph-grid .copy{padding-bottom:var(--s8)}
.ph-grid .img{border-radius:var(--r-xl) var(--r-xl) 0 0;overflow:hidden;box-shadow:var(--shadow-product)}
.ph-grid .img img{width:100%;aspect-ratio:4/3;object-fit:cover}
@media (max-width:820px){.ph-grid{grid-template-columns:1fr;gap:var(--s5)}.ph-grid .copy{padding-bottom:0}}

.subnav{position:sticky;top:64px;z-index:40;background:rgba(255,255,255,.86);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid var(--hairline)}
.subnav .in{max-width:var(--max);margin:0 auto;padding:0 var(--gutter);display:flex;gap:var(--s5);overflow-x:auto;height:48px;align-items:center;scrollbar-width:none}
.subnav a{color:var(--text);font-size:13px;white-space:nowrap}
.subnav a:hover{color:var(--primary);text-decoration:none}

.split{display:grid;grid-template-columns:1fr 1fr;gap:var(--s8);align-items:center}
.split.top{align-items:start}
@media (max-width:820px){.split{grid-template-columns:1fr;gap:var(--s6)}}
.figure{background:#fff;border-radius:var(--r-lg);padding:var(--s5)}
.parch .figure{background:#fff}
.bg-white .figure{background:var(--parchment)}
.figure img{margin:0 auto;mix-blend-mode:multiply}
.figure figcaption,.cap{font-size:13px;color:var(--text-3);margin-top:var(--s3)}
figure{margin:0}

ul.ticks{list-style:none;padding:0;margin:var(--s4) 0 0}
ul.ticks li{padding:var(--s3) 0 var(--s3) 28px;border-top:1px solid var(--divider-soft);position:relative}
ul.ticks li:first-child{border-top:0}
ul.ticks li:before{content:"";position:absolute;left:2px;top:19px;width:12px;height:6px;border-left:2px solid var(--primary);
  border-bottom:2px solid var(--primary);transform:rotate(-45deg)}
ul.ticks.cols{columns:2;column-gap:var(--s6)}
ul.ticks.cols li{break-inside:avoid}
@media (max-width:600px){ul.ticks.cols{columns:1}}

/* ---------- tables ---------- */
.table-wrap{overflow-x:auto;margin-top:var(--s6);border-radius:var(--r-lg);background:#fff;-webkit-overflow-scrolling:touch}
.bg-white .table-wrap{background:var(--parchment)}
table.spec{width:100%;border-collapse:collapse;font-size:15px;letter-spacing:-.01em;font-variant-numeric:tabular-nums;min-width:560px}
table.spec th{text-align:left;font-weight:600;font-size:13px;color:var(--text-2);padding:14px 16px;border-bottom:1px solid var(--hairline);vertical-align:bottom}
table.spec td{padding:10px 16px;border-top:1px solid var(--divider-soft)}
table.spec tr.grp td{border-top:1px solid var(--hairline)}
table.spec td.model{font-weight:600;vertical-align:top;white-space:nowrap}
table.spec .r{text-align:right}
table.spec .c{text-align:center}
table.spec .na{color:var(--text-3)}
table.spec tbody tr:hover td{background:rgba(0,102,204,.04)}
table.spec td.model:hover{background:none}
.table-note{font-size:13px;color:var(--text-3);margin-top:var(--s3)}

/* segmented control (model filter) */
.seg{display:inline-flex;flex-wrap:wrap;gap:4px;background:var(--divider-soft);border-radius:var(--r-pill);padding:4px;margin-top:var(--s5)}
.parch .seg{background:#e8e8ed}
.seg button{border:0;background:transparent;border-radius:var(--r-pill);padding:8px 16px;font:400 14px var(--font);color:var(--text);cursor:pointer;letter-spacing:-.01em}
.seg button[aria-pressed=true]{background:#fff;color:var(--text);font-weight:600}

/* ---------- selector ---------- */
.selector{background:#fff;border-radius:var(--r-xl);padding:var(--s7);margin-top:var(--s7)}
.sel-form{display:grid;grid-template-columns:1.1fr 1fr 1fr auto;gap:var(--s4);align-items:end}
@media (max-width:820px){.sel-form{grid-template-columns:1fr}.selector{padding:var(--s5)}}
label.f{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:6px}
.input,select.input,textarea.input{width:100%;font:400 17px var(--font);letter-spacing:-.02em;color:var(--text);background:#fff;
  border:1px solid #d2d2d7;border-radius:var(--r-md);padding:12px 14px;outline:0;-webkit-appearance:none;appearance:none}
select.input{background-image:linear-gradient(45deg,transparent 50%,#86868b 50%),linear-gradient(135deg,#86868b 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px;background-repeat:no-repeat;padding-right:36px}
.input:focus{border:2px solid var(--primary);padding:11px 13px}
textarea.input{min-height:120px;resize:vertical}
.unit-row{display:flex;gap:var(--s2)}
.unit-row .input:first-child{flex:1}
.unit-row select{width:120px}
.results{margin-top:var(--s6)}
.results .count{font-size:15px;color:var(--text-2);margin-bottom:var(--s3)}
.result{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr auto;gap:var(--s4);align-items:center;padding:var(--s4) 0;border-top:1px solid var(--divider-soft)}
.result .m{font-weight:600}
.result .k{font-size:12px;color:var(--text-3);display:block}
@media (max-width:820px){.result{grid-template-columns:1fr 1fr}.result .go{grid-column:1/-1}}
.empty{padding:var(--s6) 0;color:var(--text-2)}

/* ---------- forms / contact ---------- */
.form{display:grid;grid-template-columns:1fr 1fr;gap:var(--s4) var(--s5)}
.form .full{grid-column:1/-1}
@media (max-width:700px){.form{grid-template-columns:1fr}}
.contact-list{list-style:none;padding:0;margin:0}
.contact-list li{padding:var(--s4) 0;border-top:1px solid var(--hairline)}
.contact-list li:first-child{border-top:0}
.contact-list .k{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:2px}
.tile.dark .contact-list li{border-color:#333336}
.tile.dark .contact-list .k{color:var(--on-dark-2)}

/* ---------- footer ---------- */
footer.site{background:var(--parchment);font-size:12px;color:var(--text-2);padding:var(--s7) 0 var(--s6);letter-spacing:-.005em}
footer.site .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:var(--s6);padding-bottom:var(--s6);border-bottom:1px solid #d2d2d7}
footer.site h4{font-size:12px;font-weight:600;color:var(--text);margin-bottom:var(--s3);letter-spacing:-.005em}
footer.site ul{list-style:none;margin:0;padding:0}
footer.site li{margin-bottom:var(--s2)}
footer.site a{color:var(--text-2)}
footer.site .logos{display:flex;align-items:center;gap:var(--s4);margin-bottom:var(--s4)}
footer.site .logos img{height:44px;width:auto;mix-blend-mode:multiply}
footer.site .logos img+img{height:34px}
footer.site .base{padding-top:var(--s4);display:flex;justify-content:space-between;flex-wrap:wrap;gap:var(--s3)}
@media (max-width:820px){footer.site .cols{grid-template-columns:1fr 1fr}footer.site .cols>div:first-child{grid-column:1/-1}}

/* reveal on scroll (quiet) */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* anchors clear the sticky nav + sub-nav */
section[id],div[id]{scroll-margin-top:120px}
@media (max-width:700px){.seg{display:flex;flex-wrap:nowrap;overflow-x:auto;max-width:100%;scrollbar-width:none}.seg button{white-space:nowrap;flex:none}}

/* company facts (hairline grid, no chrome) */
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:0 var(--s6);margin:var(--s4) 0 0}
.facts>div{padding:var(--s4) 0;border-top:1px solid var(--hairline)}
.facts dt{font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:2px}
.facts dd{margin:0;font-size:17px}
@media (max-width:820px){.facts{grid-template-columns:1fr}}

/* ================= sales-oriented sections ================= */
.wrap.narrow{max-width:820px}
.conv{color:var(--text-3);font-size:.86em;white-space:nowrap}
.tile.dark .conv{color:var(--on-dark-2)}

/* hero trust row */
.trust{list-style:none;padding:0;margin:var(--s7) auto 0;max-width:900px;display:grid;grid-template-columns:repeat(4,1fr);text-align:center}
.trust li{padding:0 var(--s3);border-left:1px solid #d2d2d7}
.trust li:first-child{border-left:0}
.trust b{display:block;font-size:19px;letter-spacing:-.02em}
.trust span{font-size:14px;color:var(--text-2)}
@media (max-width:820px){.trust{grid-template-columns:1fr 1fr;row-gap:var(--s5)}.trust li:nth-child(3){border-left:0}}

/* product cards */
.pcards{display:grid;grid-template-columns:1fr 1fr;gap:var(--s5);margin-top:var(--s7)}
.pcard{background:var(--parchment);border-radius:var(--r-xl);overflow:hidden;display:flex;flex-direction:column}
.pcard .pimg{display:block;padding:var(--s6) var(--s6) 0}
.pcard .pimg img{width:100%;aspect-ratio:2/1;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-product)}
.pcard .pbody{padding:var(--s6);display:flex;flex-direction:column;flex:1}
.pcard .ptag{font-size:14px;font-weight:600;color:var(--text-2);margin-bottom:var(--s1)}
.pcard h3{font-size:clamp(24px,2.6vw,32px);letter-spacing:-.03em;margin-bottom:var(--s2)}
.pcard .plain{font-size:14px;color:var(--text-3);margin-bottom:var(--s3)}
.pcard p{margin-bottom:var(--s3)}
.pcard .uses{font-size:15px;color:var(--text-2)}
.pcard .range{font-size:15px;font-weight:600;padding-top:var(--s3);border-top:1px solid var(--hairline);margin-top:auto}
.pcard .ctas{margin-top:var(--s4)}
@media (max-width:820px){.pcards{grid-template-columns:1fr}.pcard .pimg,.pcard .pbody{padding-left:var(--s5);padding-right:var(--s5)}}

/* comparison */
table.compare td{vertical-align:top;padding-top:14px;padding-bottom:14px}
table.compare td:first-child{white-space:nowrap}

/* 4-up feature grid */
.features.four{grid-template-columns:repeat(4,1fr);gap:var(--s6) var(--s5)}
@media (max-width:1000px){.features.four{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.features.four{grid-template-columns:1fr}}

/* how to buy */
.steps{list-style:none;padding:0;margin:var(--s7) 0 var(--s4);display:grid;grid-template-columns:repeat(4,1fr);gap:var(--s5)}
.steps li{border-top:1px solid #333336;padding-top:var(--s5)}
.steps .n{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--primary);color:#fff;font-weight:600;font-size:15px;margin-bottom:var(--s3)}
.steps h3{font-size:21px;letter-spacing:-.02em;margin-bottom:var(--s2);color:var(--on-dark)}
.steps p{color:var(--on-dark-2)}
@media (max-width:820px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.steps{grid-template-columns:1fr}}

/* FAQ */
.faq{margin-top:var(--s7)}
.faq details{border-top:1px solid var(--hairline)}
.faq details:last-child{border-bottom:1px solid var(--hairline)}
.faq summary{list-style:none;cursor:pointer;padding:var(--s5) 40px var(--s5) 0;font-size:19px;font-weight:600;letter-spacing:-.02em;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);font-size:26px;font-weight:400;color:var(--primary);transition:transform .2s var(--ease)}
.faq details[open] summary:after{transform:translateY(-50%) rotate(45deg)}
.faq details p{padding:0 0 var(--s5);color:var(--text-2);max-width:700px}

/* product page: plain name + at-a-glance strip */
.plain-name{font-size:15px;color:var(--text-3);margin-top:var(--s3)}
.glance{background:#fff;border-bottom:1px solid var(--hairline)}
.glance dl{margin:0;display:grid;grid-template-columns:repeat(4,1fr)}
.glance dl>div{padding:var(--s5) var(--s4);border-left:1px solid var(--hairline)}
.glance dl>div:first-child{border-left:0;padding-left:0}
.glance dt{font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:4px}
.glance dd{margin:0;font-size:17px;font-weight:600;letter-spacing:-.02em}
.glance .conv{display:block;font-weight:400}
@media (max-width:820px){.glance dl{grid-template-columns:1fr 1fr}.glance dl>div{padding-left:0;border-left:0;border-top:1px solid var(--hairline)}
  .glance dl>div:nth-child(-n+2){border-top:0}.glance dl>div:nth-child(even){padding-left:var(--s4);border-left:1px solid var(--hairline)}}

/* quote form */
.fgroup{font-size:21px;font-weight:700;letter-spacing:-.02em;margin-top:var(--s4)}
.fgroup:first-child{margin-top:0}
.split.quote{grid-template-columns:1.5fr 1fr}
@media (max-width:820px){.split.quote{grid-template-columns:1fr}}
.card.side{background:var(--parchment);padding:var(--s5)}
.mini-steps{margin:var(--s3) 0 0;padding-left:20px;color:var(--text-2)}
.mini-steps li{margin-bottom:var(--s2)}
.results .ctas{margin-top:var(--s4)}
.empty .btn{margin-top:var(--s4)}

/* mobile quick-contact bar */
.mbar{display:none}
@media (max-width:820px){
  .mbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;gap:var(--s2);align-items:center;padding:10px var(--gutter) calc(10px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-top:1px solid var(--hairline)}
  .mbar a{flex:1;text-align:center;font-size:15px;padding:10px 0}
  .mbar .btn{flex:1.4;padding:12px 0;font-size:15px}
  body{padding-bottom:72px}
}
.balance{text-wrap:balance;max-width:980px;margin-left:auto;margin-right:auto}
h1,h2{text-wrap:balance}

/* ================= 3D viewer ================= */
.v3d-wrap{padding:0 0 var(--s9)}
.v3d-tabs{margin:0 0 var(--s4)}
.v3d-stage{position:relative;height:min(68vh,640px);min-height:380px;border-radius:var(--r-xl);overflow:hidden;
  background:radial-gradient(ellipse at 50% 35%,#ffffff 0%,#f5f5f7 60%,#ececf0 100%);touch-action:none}
.v3d-stage canvas{display:block;width:100%;height:100%;cursor:grab}
.v3d-stage canvas:active{cursor:grabbing}
.v3d-labels{position:absolute;inset:0;pointer-events:none}
.v3d-label{display:inline-flex;align-items:center;gap:6px;font:600 12px/1 var(--font);letter-spacing:-.01em;color:var(--text);
  background:rgba(255,255,255,.92);border:1px solid var(--hairline);border-radius:var(--r-pill);padding:6px 10px;white-space:nowrap}
.v3d-label .dot{width:6px;height:6px;border-radius:50%;background:var(--primary)}
.v3d-loading,.v3d-fallback{position:absolute;inset:0;display:grid;place-items:center;color:var(--text-2);margin:0}
.v3d-tools{position:absolute;left:var(--s4);right:var(--s4);bottom:var(--s4);display:flex;flex-wrap:wrap;gap:var(--s2);justify-content:center;z-index:2}
.chip-btn{font:400 14px var(--font);letter-spacing:-.01em;color:var(--text);background:rgba(255,255,255,.9);border:1px solid #d2d2d7;
  border-radius:var(--r-pill);padding:8px 16px;cursor:pointer;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.chip-btn[aria-pressed=true]{background:var(--primary);border-color:var(--primary);color:#fff}
.chip-btn:active{transform:scale(.97)}
.v3d-info{display:grid;grid-template-columns:1.3fr 1fr;gap:var(--s5) var(--s7);align-items:start;margin-top:var(--s6)}
.v3d-info[hidden]{display:none}
.v3d-info .ctas{grid-column:1/-1;margin-top:0}
.v3d-specs{margin:0}
.v3d-specs>div{display:flex;justify-content:space-between;gap:var(--s4);padding:var(--s3) 0;border-top:1px solid var(--hairline)}
.v3d-specs dt{color:var(--text-2)}
.v3d-specs dd{margin:0;font-weight:600}
@media (max-width:820px){.v3d-info{grid-template-columns:1fr}.v3d-stage{height:min(62vh,500px);min-height:340px}.v3d-tabs{max-width:100%}.v3d-label{font-size:11px;padding:5px 8px}}

/* 3D viewer: detail tools */
.v3d-tools{gap:6px}
.v3d-tip{position:absolute;z-index:3;pointer-events:none;background:rgba(29,29,31,.92);color:#fff;font:600 13px/1.2 var(--font);
  letter-spacing:-.01em;padding:7px 11px;border-radius:var(--r-sm);white-space:nowrap}
.v3d-tip .code{display:inline-block;background:var(--primary);border-radius:6px;padding:2px 6px;margin-right:7px;font-weight:600}
.v3d-stroke{position:absolute;top:var(--s4);left:var(--s4);z-index:2;background:rgba(255,255,255,.92);border:1px solid #d2d2d7;border-radius:var(--r-md);
  padding:10px 14px;width:min(260px,calc(100% - 32px));-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.v3d-stroke label{display:flex;justify-content:space-between;font-size:13px;font-weight:600;color:var(--text);margin-bottom:6px}
.v3d-stroke input{width:100%;accent-color:var(--primary)}
.v3d-hint{font-size:14px;color:var(--text-2);margin-top:var(--s3)}
.v3d-parts{margin-top:var(--s6)}
.v3d-parts-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:var(--s2)}
.v3d-parts-head .h3{margin:0}
.v3d-plist{list-style:none;margin:0;padding:0;columns:3;column-gap:var(--s5)}
.v3d-plist li{break-inside:avoid}
.v3d-plist button{display:flex;align-items:center;gap:8px;width:100%;text-align:left;background:none;border:0;border-top:1px solid var(--divider-soft);
  padding:9px 6px;font:400 15px var(--font);letter-spacing:-.01em;color:var(--text);cursor:pointer;border-radius:6px}
.v3d-plist button:hover,.v3d-plist button[aria-pressed=true]{background:rgba(0,102,204,.07)}
.v3d-plist .code{min-width:58px;font-size:12px;font-weight:600;color:var(--primary);font-variant-numeric:tabular-nums}
.v3d-plist .code:empty{min-width:0}
.v3d-plist .tag{margin-left:auto;font-size:11px;color:var(--text-3);border:1px solid var(--hairline);border-radius:var(--r-pill);padding:1px 7px}
@media (max-width:1000px){.v3d-plist{columns:2}}
@media (max-width:600px){
  .v3d-plist{columns:1}
  .v3d-tools{left:0;right:0;bottom:12px;flex-wrap:nowrap;overflow-x:auto;justify-content:flex-start;padding:0 12px;scrollbar-width:none}
  .v3d-tools::-webkit-scrollbar{display:none}
  .chip-btn{flex:none;font-size:13px;padding:7px 12px}
  .v3d-stroke{top:12px;left:12px;width:190px;padding:7px 10px}
  .v3d-stroke label{font-size:12px;margin-bottom:2px}
}

/* operating simulator */
.sim{display:grid;grid-template-columns:1fr 1fr;gap:var(--s6);background:var(--parchment);border-radius:var(--r-xl);padding:var(--s6);margin-top:var(--s5)}
.sim .h3{margin-bottom:var(--s4)}
.sim-grid2{display:grid;grid-template-columns:1fr 1fr;gap:var(--s3)}
.sim-grid2>div[hidden]{display:none}
.sim-row{margin-top:var(--s4)}
.sim-row[hidden]{display:none}
.sim-row label{display:flex;justify-content:space-between}
.sim-row label b{color:var(--text);font-weight:600}
.sim-row input[type=range]{width:100%;accent-color:var(--primary)}
.sim-checks{display:flex;flex-wrap:wrap;gap:var(--s2) var(--s5);margin-top:var(--s4);font-size:15px}
.sim-checks label{display:flex;align-items:center;gap:8px;cursor:pointer}
.sim-checks label[hidden]{display:none}
.sim-checks input{accent-color:var(--primary);width:18px;height:18px}
.sim-out{background:#fff;border-radius:var(--r-lg);padding:var(--s5);display:grid;grid-template-columns:1fr 1fr;gap:var(--s4) var(--s5);align-content:start}
.sim-kpi .k{display:block;font-size:13px;font-weight:600;color:var(--text-2)}
.sim-kpi b{display:block;font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:-.03em;line-height:1.15}
.sim-kpi .conv{display:block;white-space:normal;font-size:13px;margin-top:2px}
.sim-out .sim-status,.sim-out .ctas,.sim-out .table-note{grid-column:1/-1;margin:0}
.sim-status{font-size:15px;font-weight:600;padding:10px 12px;border-radius:var(--r-md)}
.sim-status.ok{background:#eef7ee;color:#1b6b2a}
.sim-status.warn{background:#fdecec;color:#b3261e}
@media (max-width:900px){.sim{grid-template-columns:1fr;padding:var(--s5)}}
@media (max-width:520px){.sim-out{grid-template-columns:1fr}.sim-grid2{grid-template-columns:1fr}}

/* simulator: engineering detail */
.sim-grid2 .span2{grid-column:1/-1}
.sim-grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s2)}
.sim-grid3 .input{padding:10px 12px}
.sim-sub{font-size:13px;font-weight:600;color:var(--text);margin:var(--s5) 0 var(--s2)}
ul.sim-status{list-style:none;margin:0;padding:0;display:grid;gap:6px}
ul.sim-status li{font-size:14px;font-weight:600;padding:9px 12px;border-radius:var(--r-md);line-height:1.35}
ul.sim-status li.ok{background:#eef7ee;color:#1b6b2a}
ul.sim-status li.warn{background:#fdecec;color:#b3261e}
.sim-details{grid-column:1/-1;margin:0}
.sim-details>div{display:grid;grid-template-columns:42% 1fr;gap:var(--s3);padding:8px 0;border-top:1px solid var(--divider-soft);font-size:14px}
.sim-details dt{color:var(--text-2)}
.sim-details dd{margin:0;font-weight:600;font-variant-numeric:tabular-nums}
.sim-method{grid-column:1/-1;font-size:13px;color:var(--text-2)}
.sim-method summary{cursor:pointer;color:var(--primary);font-weight:600;font-size:14px;padding:6px 0}
.sim-method p{margin:8px 0 0}
@media (max-width:520px){.sim-grid3{grid-template-columns:1fr 1fr}.sim-details>div{grid-template-columns:1fr}}

/* 3D / 2D mode + drawing sheets */
.v3d-top{display:flex;flex-wrap:wrap;gap:var(--s3);justify-content:space-between;align-items:center;margin-bottom:var(--s4)}
.v3d-top .seg{margin:0}
.v3d-stage[hidden]{display:none}
.draw[hidden]{display:none}
.draw-bar{display:flex;flex-wrap:wrap;gap:var(--s3);justify-content:space-between;align-items:center;margin-bottom:var(--s3)}
.draw-bar .seg{margin:0}
.draw-actions{display:flex;gap:var(--s2);flex-wrap:wrap}
.draw-sheet{background:#e8e8ed;border-radius:var(--r-lg);padding:var(--s4);overflow:auto;min-height:300px;display:grid;place-items:center}
.draw-sheet img{width:100%;max-width:1400px;height:auto;background:#fff}
.draw-wait{color:var(--text-2);margin:0}
@media (max-width:700px){.draw-sheet{padding:8px}.draw-sheet img{width:200%;max-width:none}}