/* Warm, light "premium paper" theme: ivory surfaces, clay accent, serif display type. */
:root{
  --bg:#faf9f5; --bg2:#f2efe6; --paper:#ffffff; --sand:#e9e4d6;
  --line:#e4dfd2; --line-hi:#d3ccba;
  --text:#191917; --body:#3f3e3a; --muted:#6b6a63; --dim:#8a887f;
  --clay:#c6613f; --clay-hi:#d97757; --clay-ink:#a94f30; --clay-soft:#f6e3da;
  --ink:#3d5f86; --olive:#6d7f4f; --gold:#a87423; --red:#b8432f;
  --serif:'Source Serif 4',Georgia,'Times New Roman',serif;
  --sans:Inter,system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,Consolas,monospace;
  --shadow:0 1px 2px rgba(60,50,30,.05),0 8px 24px rgba(60,50,30,.07);
  --shadow-lg:0 2px 4px rgba(60,50,30,.05),0 24px 60px rgba(60,50,30,.14);
  --radius:20px; --max:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--bg);color:var(--body);font:16.5px/1.7 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:clip}
::selection{background:var(--clay-soft);color:var(--text)}
a{color:var(--clay-ink);text-decoration:none}
strong,b{color:var(--text);font-weight:600}
h1,h2,h3,h4{margin:0;color:var(--text);line-height:1.2}
.mono{font-family:var(--mono)}
.muted{color:var(--muted)}
.skip{position:absolute;left:-999px;top:8px;background:var(--clay);color:#fff;padding:8px 14px;border-radius:8px;z-index:60}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--clay);outline-offset:3px;border-radius:6px}
[hidden]{display:none!important}

/* ---------- top nav ---------- */
.topnav{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:20px;padding:14px max(24px,calc((100% - var(--max))/2 + 24px));background:rgba(250,249,245,.82);backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid transparent;transition:border-color .3s,background .3s}
.topnav.scrolled{border-color:var(--line);background:rgba(250,249,245,.94)}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:600;margin-right:auto}
.mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--clay);color:#fff;font:600 19px var(--serif)}
.brand-name{font-family:var(--serif);font-size:19px;font-weight:600;letter-spacing:-.01em}
.toc{display:flex;gap:2px}
.toc a{color:var(--muted);font-size:14.5px;font-weight:500;padding:8px 12px;border-radius:999px;transition:color .2s,background .2s}
.toc a:hover{color:var(--text);background:var(--bg2)}
.toc a.active{color:var(--clay-ink);background:var(--clay-soft)}
.menu-btn{display:none;width:42px;height:40px;border:1px solid var(--line-hi);border-radius:10px;background:var(--paper);cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.menu-btn span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .25s}
.menu-btn[aria-expanded=true] span:first-child{transform:translateY(3.5px) rotate(45deg)}
.menu-btn[aria-expanded=true] span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

/* ---------- buttons ---------- */
.cta{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:999px;border:1px solid var(--line-hi);background:var(--paper);color:var(--text);font:600 15px var(--sans);cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s;box-shadow:0 1px 2px rgba(60,50,30,.06)}
.btn:hover{transform:translateY(-1px);border-color:var(--text);box-shadow:var(--shadow)}
.btn.primary{background:var(--clay);border-color:var(--clay);color:#fff}
.btn.primary:hover{background:var(--clay-ink);border-color:var(--clay-ink)}
.btn.small{padding:9px 16px;font-size:14px}
.icon-link{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;border:1px solid var(--line-hi);background:var(--paper);color:var(--body);transition:color .2s,border-color .2s,transform .2s}
.icon-link:hover{color:var(--clay);border-color:var(--clay);transform:translateY(-1px)}

/* ---------- hero ---------- */
.hero{max-width:var(--max);margin:0 auto;padding:72px 24px 88px;display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13.5px;font-weight:500;color:var(--muted);padding:6px 14px 6px 10px;border:1px solid var(--line);border-radius:999px;background:var(--paper);margin:0 0 26px}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--olive);box-shadow:0 0 0 4px rgba(109,127,79,.18)}
.hero h1{font-family:var(--serif);font-weight:500;font-size:clamp(46px,6.6vw,84px);line-height:1.02;letter-spacing:-.025em}
.role{margin:20px 0 0;font-size:clamp(17px,1.8vw,20px);font-weight:600;color:var(--clay-ink)}
.tagline{margin:14px 0 30px;font-size:clamp(17px,1.7vw,19px);max-width:560px;color:var(--body)}
.proof{list-style:none;padding:0;margin:40px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:0;max-width:600px;border-top:1px solid var(--line)}
.proof li{padding:18px 16px 0 0}
.proof li+li{padding-left:18px;border-left:1px solid var(--line)}
.proof b{display:block;font:500 30px/1.1 var(--serif);color:var(--text);letter-spacing:-.01em}
.proof span{display:block;font-size:13.5px;line-height:1.4;color:var(--muted);margin-top:6px}

.portrait{position:relative;margin:0;justify-self:center;width:min(420px,100%)}
.portrait::before{content:"";position:absolute;inset:22px -22px -22px 22px;border-radius:28px;background:var(--clay-soft);border:1px solid #edcfc1}
.photo{position:relative;aspect-ratio:4/5;border-radius:28px;overflow:hidden;background:linear-gradient(160deg,#efe6da,#e2d5c4);box-shadow:var(--shadow-lg);display:grid;place-items:center}
.photo span{font:500 96px var(--serif);color:var(--clay)}
.photo img{width:100%;height:100%;object-fit:cover;object-position:50% 20%;display:block}
.float{position:absolute;display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:10px 16px;box-shadow:var(--shadow);font-size:13px;line-height:1.35;animation:bob 6s ease-in-out infinite}
.float b{font-size:14px}
.float span{color:var(--muted)}
.f1{top:7%;left:-16%}
.f2{bottom:18%;left:-20%;animation-delay:-2s}
.f3{bottom:-4%;right:-6%;animation-delay:-4s}
.f1{padding-right:34px}
.f1::before{content:"★";position:absolute;right:13px;top:10px;color:var(--gold);font-size:14px}
@keyframes bob{50%{transform:translateY(-6px)}}

/* ---------- content column ---------- */
.content{max-width:var(--max);margin:0 auto;padding:0 24px}
.sec{padding:88px 0 0;scroll-margin-top:80px}
.sec-label{font:500 clamp(30px,3.6vw,44px)/1.15 var(--serif);letter-spacing:-.02em;margin-bottom:12px;display:flex;align-items:baseline;gap:14px}
.sec-label::before{content:attr(data-n);font:500 13px var(--mono);color:var(--clay);letter-spacing:.06em;transform:translateY(-6px)}
.lead{font-size:18px;max-width:720px;margin:0 0 28px;color:var(--body)}
.kicker{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--clay-ink);margin:0 0 8px;font-weight:500}
#about{display:grid;grid-template-columns:1fr;max-width:860px}
#about p{margin:0 0 18px;font-size:19px;line-height:1.75}
#about p:first-of-type::first-letter{font:500 64px/0.9 var(--serif);float:left;margin:6px 10px 0 0;color:var(--clay)}

/* ---------- airframe ---------- */
.air{position:relative;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fbfaf6;box-shadow:var(--shadow)}
.air-map{display:block;width:100%;height:auto}
.air-map .zone{opacity:.3;transition:opacity .3s}
.air-map .zone.on{opacity:1}
.spot{position:absolute;transform:translate(-50%,-50%);width:36px;height:36px;border-radius:50%;border:2px solid var(--clay);background:var(--paper);color:var(--clay);font:600 14px var(--mono);cursor:pointer;display:grid;place-items:center;transition:background .2s,color .2s,transform .2s;box-shadow:var(--shadow)}
.spot:hover{transform:translate(-50%,-50%) scale(1.1)}
.spot.on{background:var(--clay);color:#fff;animation:ring 1.8s ease-out infinite}
@keyframes ring{0%{box-shadow:0 0 0 0 rgba(198,97,63,.45)}100%{box-shadow:0 0 0 16px rgba(198,97,63,0)}}
.air-detail{display:grid;grid-template-columns:1.15fr 1fr;gap:28px;margin-top:18px;border:1px solid var(--line);border-radius:var(--radius);padding:18px;background:var(--paper);box-shadow:var(--shadow)}
.air-img{all:unset;cursor:zoom-in;display:block;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#fbfaf6;align-self:start}
.air-img img{display:block;width:100%;height:auto}
.air-img:focus-visible{outline:2px solid var(--clay)}
.air-text{padding:8px 8px 8px 0;display:flex;flex-direction:column}
.air-text h3{font:500 28px/1.2 var(--serif)}
.air-text p:not(.kicker){margin:12px 0 0}
.air-nav{display:flex;gap:8px;margin-top:auto;padding-top:20px}
.air-nav .btn{padding:9px 16px}

/* ---------- features & cards ---------- */
.feature{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--paper);box-shadow:var(--shadow);margin-top:8px}
.feature+.feature{margin-top:24px}
.demo-frame{position:relative;height:clamp(400px,64vh,600px);background:#0d1626}
.demo-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.demo-load{all:unset;cursor:pointer;position:absolute;inset:0;display:block}
.demo-load img{width:100%;height:100%;object-fit:cover;filter:brightness(.8);transition:filter .3s,transform .6s}
.demo-load:hover img{filter:brightness(.92);transform:scale(1.02)}
.demo-load .play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:grid;grid-template-columns:auto auto;align-items:center;column-gap:10px;background:var(--paper);color:var(--text);font-weight:600;padding:16px 28px;border-radius:999px;white-space:nowrap;box-shadow:0 0 0 8px rgba(255,255,255,.18),0 20px 50px rgba(0,0,0,.3)}
.demo-load .play svg{color:var(--clay)}
.demo-load .play small{grid-column:1/-1;text-align:center;font-weight:500;font-size:12px;color:var(--muted)}
.demo-load:focus-visible{outline:3px solid var(--clay);outline-offset:-3px}
.feature-body{padding:28px 30px 30px}
.feature-body h3{font:500 32px/1.15 var(--serif);letter-spacing:-.015em}
.feature-body>p{margin:12px 0 0;max-width:760px}
.metrics{list-style:none;padding:0;margin:24px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.metrics li{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.metrics b{display:block;font:500 24px/1.2 var(--serif);color:var(--text)}
.metrics span{font-size:13px;color:var(--muted)}
.links{display:flex;flex-wrap:wrap;gap:24px;margin-top:22px}
.arrow{color:var(--clay-ink);font-weight:600;font-size:15px;border-bottom:1px solid transparent;transition:border-color .2s}
.arrow:hover{border-color:var(--clay-ink)}
.arrow::after{content:" →"}
.arrow[target]::after{content:""}
.tags{list-style:none;padding:0;margin:18px 0 0;display:flex;flex-wrap:wrap;gap:6px}
.tags li{font:500 12.5px var(--sans);padding:5px 12px;border-radius:999px;background:var(--bg2);color:var(--body);border:1px solid var(--line)}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:24px}
.cards.one{grid-template-columns:1fr}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:28px 30px;background:var(--paper);box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.card h3{font:500 28px/1.2 var(--serif)}
.card>p{margin:10px 0 0;max-width:760px}
.card .note{font-size:14px;color:var(--muted);margin-top:16px;padding:10px 14px;border-radius:10px;background:var(--bg)}
.flow{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:16px}
.flow span{font:600 12px var(--mono);padding:6px 10px;border-radius:8px;border:1px solid var(--clay);color:var(--clay-ink);background:#fff}
.flow i{width:16px;height:1.5px;background:var(--clay);position:relative}
.flow i::after{content:"";position:absolute;right:-1px;top:-3.5px;border:4px solid transparent;border-left:6px solid var(--clay)}

/* gallery */
.gal{padding:16px 16px 0;background:var(--bg2);border-bottom:1px solid var(--line)}
.gal-main{margin:0;border-radius:14px;overflow:hidden;background:#fff;aspect-ratio:16/9;display:grid;place-items:center;border:1px solid var(--line)}
.gal-zoom{all:unset;cursor:zoom-in;width:100%;height:100%;display:grid;place-items:center}
.gal-main img{max-width:100%;max-height:100%;object-fit:contain;display:block}
.gal-thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:14px 0 16px}
.gal-thumbs button{all:unset;cursor:pointer;border-radius:12px;border:1.5px solid var(--line);overflow:hidden;background:#fff;transition:border-color .2s,transform .2s}
.gal-thumbs button:hover{transform:translateY(-1px)}
.gal-thumbs button[aria-selected=true]{border-color:var(--clay)}
.gal-thumbs img{display:block;width:100%;height:58px;object-fit:cover;object-position:top left}
.gal-thumbs span{display:block;font:500 12px var(--sans);padding:6px 10px;color:var(--muted)}
.gal-thumbs button[aria-selected=true] span{color:var(--clay-ink)}
.gal-thumbs button:focus-visible{outline:2px solid var(--clay)}

/* lightbox */
.lightbox{border:0;border-radius:18px;padding:18px;background:var(--paper);max-width:min(1200px,94vw);max-height:92vh;color:var(--muted);box-shadow:var(--shadow-lg)}
.lightbox::backdrop{background:rgba(25,25,23,.55);backdrop-filter:blur(6px)}
.lightbox img{display:block;max-width:100%;max-height:78vh;margin:0 auto;border-radius:10px}
.lightbox p{font-size:12px;margin:10px 0 0;text-align:center}
.lb-close{position:absolute;right:12px;top:10px;background:var(--paper);color:var(--text);border:1px solid var(--line-hi);border-radius:50%;width:36px;height:36px;cursor:pointer;z-index:2}

/* margin of safety */
.ms{margin-top:24px;border:1px solid var(--line);border-radius:var(--radius);padding:28px 30px;background:linear-gradient(140deg,#fff,#fbf4ef);box-shadow:var(--shadow)}
.ms-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start}
.ms-head h3{font:500 28px/1.2 var(--serif)}
.ms-head p.muted{margin:8px 0 0;font-size:15px}
.ms-out{font:500 46px/1 var(--serif);color:var(--olive);min-width:4ch;text-align:right}
.ms-out.fail{color:var(--red)}.ms-out.tight{color:var(--gold)}
.ms-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 28px;margin-top:22px}
.ms-grid label{display:flex;flex-wrap:wrap;justify-content:space-between;font-size:14.5px;color:var(--text);font-weight:500}
.ms-grid label span{color:var(--muted);font-size:13px;font-weight:400}
.ms-grid label em{font-style:normal}
.ms-grid input[type=range]{width:100%;margin-top:8px;accent-color:var(--clay)}
.ms-grid .check{justify-content:flex-start;gap:8px;align-items:center}
.check input{accent-color:var(--clay);width:17px;height:17px}
.gauge{position:relative;height:10px;border-radius:99px;background:#f1dcd5;margin-top:22px;overflow:hidden}
.gauge i{position:absolute;left:0;top:0;bottom:0;border-radius:99px;background:linear-gradient(90deg,var(--gold),var(--olive));transition:width .25s}
.gauge em{position:absolute;left:50%;top:0;bottom:0;width:2px;background:var(--text);opacity:.35}
.ms-foot{font-size:12px;color:var(--dim);margin:12px 0 0}

/* ---------- experience ---------- */
.exp{list-style:none;margin:8px 0 0;padding:0;border-top:1px solid var(--line)}
.xcard{display:grid;grid-template-columns:150px 1fr;gap:28px;padding:30px 0;border-bottom:1px solid var(--line);transition:background .25s}
.xcard .when{font-size:13px;color:var(--muted);padding-top:6px}
.xcard h3{font:500 24px/1.25 var(--serif)}
.xcard .at{display:block;font:600 15px var(--sans);color:var(--clay-ink);margin-top:6px}
.xcard p{margin:10px 0 0;max-width:780px}
.sub{list-style:none;padding:0;margin:14px 0 0;font-size:15px}
.sub li{padding:4px 0;color:var(--text)}
.sub .mono{font-size:12.5px;color:var(--muted);margin-right:12px}
.duo{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px}
.panel{border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;background:var(--paper);box-shadow:var(--shadow)}
.panel-h{font:500 24px var(--serif);color:var(--text);margin-bottom:8px;letter-spacing:0;text-transform:none}
.list{list-style:none;margin:0;padding:0}
.list li{padding:12px 0;border-bottom:1px solid var(--line);display:flex;flex-direction:column}
.list li:last-child{border:0;padding-bottom:0}
.list b{font-size:16px}
.list span{font-size:14px;color:var(--muted)}

.panel-h.sub-h{margin-top:26px}
.li-strip{display:grid;grid-template-columns:1.2fr 1fr;gap:20px;margin-top:20px}
.li-card{display:flex;flex-direction:column;gap:8px;padding:26px 28px;border-radius:var(--radius);border:1px solid var(--line);background:var(--paper);box-shadow:var(--shadow);color:var(--body);transition:transform .25s,box-shadow .25s}
.li-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.li-card.featured{background:linear-gradient(135deg,#fff 0%,#fbefe8 100%);border-color:#edcfc1}
.li-card b{font:500 24px/1.25 var(--serif);color:var(--text)}
.li-card .li-text{color:var(--muted)}
.li-card .arrow{margin-top:auto;padding-top:8px;align-self:flex-start}
.li-card .arrow::after{content:""}
.li-tag{display:inline-flex;align-items:center;gap:6px;align-self:flex-start;font:600 12px var(--sans);color:#0a66c2;background:#e8f1fb;padding:5px 10px;border-radius:999px}

/* ---------- toolbox ---------- */
.tool-tabs{display:inline-flex;gap:4px;padding:5px;border:1px solid var(--line);border-radius:999px;background:var(--paper);margin:8px 0 20px;flex-wrap:wrap;box-shadow:var(--shadow)}
.tool-tabs button{border:0;background:none;color:var(--muted);font:600 14.5px var(--sans);padding:9px 20px;border-radius:999px;cursor:pointer;transition:background .2s,color .2s}
.tool-tabs button[aria-selected=true]{background:var(--text);color:#fff}
.tool-panel{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}
.tool-panel>div{border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;background:var(--paper);box-shadow:var(--shadow)}
.tool-panel h4{font:500 13px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--clay-ink);margin-bottom:10px}
.tool-panel p{margin:0;color:var(--text);font-size:16px;line-height:1.8}

/* ---------- learn ---------- */
.learn{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.learn article{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:var(--paper);box-shadow:var(--shadow);transition:transform .25s}
.learn article:hover{transform:translateY(-3px)}
.learn .num{font:500 13px var(--mono);color:var(--clay)}
.learn h3{font:500 24px var(--serif);margin:8px 0 8px}
.learn p{margin:0;font-size:14.5px;color:var(--muted)}
.yt{margin-top:16px;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:24px 28px;border-radius:var(--radius);background:var(--text);color:#e9e6dc}
.yt .kicker{color:var(--clay-hi)}
.yt h3{color:#fff;font:500 22px/1.3 var(--serif)}
.pill{font-size:12.5px;padding:7px 14px;border-radius:999px;border:1px solid rgba(255,255,255,.25);white-space:nowrap}

/* ---------- contact ---------- */
.contact{margin-top:96px;padding:64px 56px!important;border-radius:28px;background:var(--bg2);border:1px solid var(--line);text-align:center}
.contact .sec-label{justify-content:center}
.contact .sec-label::before{display:none}
.big{font:500 clamp(28px,3.6vw,44px)/1.2 var(--serif);color:var(--text);margin:8px auto 14px;letter-spacing:-.02em;max-width:820px}
.grad{color:var(--clay)}
.contact .muted{max-width:560px;margin:0 auto}
.contact .cta{justify-content:center;margin-top:28px}
.foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;margin:72px 0 0;padding-top:20px;border-top:1px solid var(--line-hi);font-size:12.5px;color:var(--dim);text-align:left}
main{padding-bottom:48px}

/* ---------- case study ---------- */
.cs{max-width:820px;margin:0 auto;padding:40px 24px 60px}
.back{font-size:13px;color:var(--muted)}
.back:hover{color:var(--clay)}
.cs-head{margin:48px 0 32px}
.cs-head h1{font:500 clamp(40px,6vw,64px)/1.05 var(--serif);letter-spacing:-.025em}
.cs .cs-lede{font-size:19px;margin:20px 0 28px}
.cs-fig{margin:0 0 32px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.cs-fig img{display:block;width:100%}
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:0 0 56px}
.facts div{border-top:2px solid var(--clay);padding-top:12px}
.facts dt{font:500 12px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--clay-ink)}
.facts dd{margin:6px 0 0;color:var(--text);font-size:15px}
.cs section{margin-bottom:52px}
.cs h2{font:500 32px var(--serif);margin-bottom:14px;letter-spacing:-.015em}
.cs p{margin:0 0 14px}
.steps-list{margin:0;padding-left:24px}
.steps-list li{margin-bottom:12px}
.steps-list li::marker{color:var(--clay);font-family:var(--mono)}
.bul{margin:0;padding-left:20px}
.bul li{margin-bottom:8px}
.pipe{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:24px;padding:20px;border:1px dashed var(--line-hi);border-radius:16px;background:var(--paper)}
.pipe span{font:600 12.5px var(--mono);padding:7px 11px;border-radius:8px;border:1px solid var(--clay);color:var(--clay-ink)}
.pipe i{width:18px;height:1.5px;background:var(--dim)}
.metrics.four{grid-template-columns:repeat(4,1fr);margin:0 0 18px}

/* reveal */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .toc a{padding:8px 9px;font-size:14px}
  .f1{left:-6%}.f2{left:-8%}
}
@media (max-width:960px){
  .menu-btn{display:flex}
  .nav-cta{display:none}
  .toc{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;padding:12px 20px 18px;background:var(--bg);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .toc.open{display:flex}
  .toc a{padding:12px 14px;font-size:16px}
  .hero{grid-template-columns:1fr;gap:48px;padding-top:40px}
  .portrait{order:-1;width:min(340px,82%)}
  .learn{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .topnav{padding:12px 16px}
  .hero{padding:28px 16px 56px}
  .content{padding:0 16px}
  .sec{padding-top:64px}
  #about p{font-size:17px}
  .proof b{font-size:22px}
  .proof li{padding-right:10px}.proof li+li{padding-left:12px}
  .proof span{font-size:12px}
  .float{padding:8px 12px;font-size:11.5px}.float b{font-size:12.5px}
  .f1{left:-8%;top:5%}.f2{left:-10%}.f3{right:-6%}
  .cards,.duo,.learn,.ms-grid,.air-detail,.li-strip{grid-template-columns:1fr}
  .metrics{gap:8px}.metrics li{padding:10px}.metrics b{font-size:18px}.metrics span{font-size:12px}
  .xcard{grid-template-columns:1fr;gap:6px;padding:24px 0}
  .demo-frame{height:72vh}
  .feature-body,.card,.ms{padding:22px}
  .feature-body h3,.card h3,.ms-head h3,.air-text h3{font-size:24px}
  .ms-out{font-size:36px}
  .yt{flex-direction:column;align-items:flex-start}
  .contact{padding:44px 20px!important;border-radius:22px}
  .gal-thumbs span{font-size:10.5px;padding:4px 6px}.gal-thumbs img{height:42px}
  .spot{width:30px;height:30px;font-size:12px}
  .facts,.metrics.four{grid-template-columns:1fr 1fr}
}