/* Cloudung — site styles.
   Layout: a light drafting desk; every explanatory visual is a framed technical
   drawing with centring marks and a title block. Text stays short, the drawings
   carry the argument. Light theme only, fonts self-hosted (no third parties). */

@font-face{font-family:'Barlow';src:url('/fonts/barlow-400.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Barlow';src:url('/fonts/barlow-500.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'Barlow';src:url('/fonts/barlow-600.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:'Barlow Condensed';src:url('/fonts/barlow-condensed-600.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:'Barlow Condensed';src:url('/fonts/barlow-condensed-700.woff2') format('woff2');font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:'Azeret Mono';src:url('/fonts/azeret-mono.woff2') format('woff2');font-weight:400 500;font-style:normal;font-display:swap}

:root{
  --desk:#e9ecea;
  --paper:#fbfcfb;
  --ink:#17202b;
  --ink-2:#4a5361;
  --pencil:#a6aeb8;
  --hatch:#7d8794;
  --hatch-soft:rgba(125,135,148,.30);
  --rule:#cdd2d7;
  --grid:rgba(23,32,43,.045);
  --signal:#2347d6;
  --signal-ink:#ffffff;
  --signal-soft:rgba(35,71,214,.07);
  --f-disp:'Barlow Condensed','Arial Narrow','Roboto Condensed',sans-serif;
  --f-body:'Barlow','Helvetica Neue',Arial,sans-serif;
  --f-mono:'Azeret Mono',ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
  --hdr:68px;
  color-scheme:light;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--hdr) + 12px)}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--desk);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{max-width:100%}
a{color:inherit}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}
.wrap{max-width:1160px;margin-inline:auto;padding-left:max(24px, env(safe-area-inset-left, 0px));padding-right:max(24px, env(safe-area-inset-right, 0px))}
@media (max-width:600px){.wrap{padding-left:max(16px, env(safe-area-inset-left, 0px));padding-right:max(16px, env(safe-area-inset-right, 0px))}}
.ml{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--ink-2)}
.skip{position:absolute;left:-9999px;top:8px;z-index:50;background:var(--paper);padding:10px 14px;border:1.5px solid var(--ink)}
.skip:focus{left:16px}
.defs{position:absolute;width:0;height:0;overflow:hidden}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:600 16px/1 var(--f-body);padding:14px 20px;text-decoration:none;border:1.5px solid var(--ink);cursor:pointer;transition:background .15s,color .15s,border-color .15s}
.btn.pri{background:var(--ink);color:var(--paper)}
.btn.pri:hover{background:var(--signal);border-color:var(--signal);color:var(--signal-ink)}
.btn.alt{background:transparent;color:var(--ink)}
.btn.alt:hover{background:var(--paper)}
.btn.sm{padding:10px 15px;font-size:15px}
.ctas{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:20;background:rgba(233,236,234,.94);-webkit-backdrop-filter:saturate(1.2) blur(10px);backdrop-filter:saturate(1.2) blur(10px);border-bottom:1px solid var(--rule)}
.hdr{display:flex;align-items:center;justify-content:space-between;gap:16px;height:var(--hdr)}
.logo{display:inline-flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink)}
.logo-mark{width:30px;height:30px;flex:none;color:var(--ink)}
.logo-mark .dot{fill:var(--signal)}
.logo span{font-family:var(--f-disp);font-weight:700;font-size:26px;letter-spacing:.005em;line-height:1}
.nav{display:flex;align-items:center;gap:30px}
.nav a{text-decoration:none;color:var(--ink-2);font-size:16px;font-weight:500}
.nav a:hover{color:var(--ink)}
.nav a.btn{color:var(--paper)}
.nav a.btn:hover{color:var(--signal-ink)}
.menu-btn{display:none;align-items:center;gap:10px;font:600 15px/1 var(--f-body);color:var(--ink);background:transparent;border:1.5px solid var(--ink);padding:10px 13px;cursor:pointer}
.bars,.bars::before,.bars::after{display:block;width:16px;height:2px;background:var(--ink);position:relative;transition:transform .2s}
.bars::before,.bars::after{content:"";position:absolute;left:0}
.bars::before{top:-5px}.bars::after{top:5px}
.menu-btn[aria-expanded="true"] .bars{background:transparent}
.menu-btn[aria-expanded="true"] .bars::before{transform:translateY(5px) rotate(45deg)}
.menu-btn[aria-expanded="true"] .bars::after{transform:translateY(-5px) rotate(-45deg)}
@media (max-width:860px){
  .menu-btn{display:inline-flex}
  .nav{display:none;position:absolute;left:0;right:0;top:var(--hdr);flex-direction:column;align-items:stretch;gap:0;background:var(--paper);border-bottom:1.5px solid var(--ink);padding:6px max(16px, env(safe-area-inset-left, 0px)) 18px}
  .nav.open{display:flex}
  .nav a{padding:15px 2px;border-bottom:1px solid var(--rule);font-size:18px;color:var(--ink)}
  .nav a.btn{margin-top:16px;border-bottom:1.5px solid var(--ink);padding:15px 20px}
}

/* ---------- hero ---------- */
.hero{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:56px;align-items:center;padding-block:76px 64px}
.hero-txt{display:grid;gap:24px;min-width:0}
h1,h2,h3{text-wrap:balance}
.hero h1{font-family:var(--f-disp);font-weight:600;font-size:clamp(2.7rem, 6.2vw, 5.4rem);line-height:.98;letter-spacing:-.005em;margin:0}
.sig{color:var(--signal)}
.lead{margin:0;max-width:54ch;font-size:1.14rem;color:var(--ink-2)}
.hero .sheet{max-width:500px;justify-self:end;width:100%}
@media (max-width:960px){
  .hero{grid-template-columns:minmax(0,1fr);gap:36px;padding-block:44px 32px}
  .hero .sheet{justify-self:center;max-width:460px}
}

/* ---------- sections ---------- */
.sec{display:grid;gap:22px;padding-block:72px 8px}
.sec-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px 32px}
.sec-head > div{display:grid;gap:10px;max-width:70ch;min-width:0}
h2{font-family:var(--f-disp);font-weight:600;font-size:clamp(1.9rem, 3.7vw, 2.9rem);line-height:1.04;margin:0}
.sec-head p{margin:0;color:var(--ink-2)}
@media (max-width:600px){.sec{padding-block:52px 4px;gap:18px}}
.switch{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.mode{display:inline-flex;border:1px solid var(--ink);background:var(--paper)}
.mode button{font:500 15px/1 var(--f-body);padding:10px 14px;border:0;background:transparent;color:var(--ink);cursor:pointer}
.mode button + button{border-left:1px solid var(--ink)}
.mode button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}

/* ---------- drawing sheet ---------- */
.sheet{background:var(--paper);border:1px solid var(--rule);padding:12px;margin:0}
.frame{position:relative;display:flex;flex-direction:column;border:1.5px solid var(--ink);background-color:var(--paper);
  background-image:linear-gradient(var(--grid) 1px, transparent 1px),linear-gradient(90deg, var(--grid) 1px, transparent 1px);background-size:20px 20px}
.mark{position:absolute;background:var(--ink)}
.mark.t{top:-12px;left:50%;width:1.5px;height:12px}
.mark.b{bottom:-12px;left:50%;width:1.5px;height:12px}
.mark.l{left:-12px;top:50%;width:12px;height:1.5px}
.mark.r{right:-12px;top:50%;width:12px;height:1.5px}
.draw{padding:22px 16px 12px}
.draw svg{display:block;width:100%;height:auto}
/* each drawing ships twice; these selectors must out-rank .draw svg */
.draw svg.d-narrow{display:none}
@media (max-width:960px){
  .draw svg.d-wide{display:none}
  .draw svg.d-narrow{display:block;max-width:460px;margin-inline:auto}
}
@media (max-width:600px){
  .sheet{padding:8px}
  .mark.t,.mark.b{height:8px}.mark.t{top:-8px}.mark.b{bottom:-8px}
  .mark.l,.mark.r{width:8px}.mark.l{left:-8px}.mark.r{right:-8px}
  .draw{padding:14px 6px 8px}
}
.foot{display:flex;flex-wrap:wrap;align-items:stretch}
.note{padding:12px 16px;color:var(--ink-2);font-size:14.5px;align-self:center;max-width:62ch;margin:0}

/* ---------- svg vocabulary ---------- */
.s-ln{fill:none;stroke:var(--ink);stroke-width:1.4}
.s-thin{fill:none;stroke:var(--ink);stroke-width:.9}
.s-pen{fill:none;stroke:var(--pencil);stroke-width:1}
.s-dash{stroke-dasharray:5 4}
.s-cl{fill:none;stroke:var(--hatch);stroke-width:1;stroke-dasharray:16 4 2 4}
.s-box{fill:var(--paper);stroke:var(--ink);stroke-width:1.4}
.s-sig{fill:none;stroke:var(--signal);stroke-width:2.2}
.f-sig{fill:var(--signal)}
.f-pen{fill:var(--pencil)}
.f-paper{fill:var(--paper)}
.f-ink{fill:var(--ink)}
.hatched{fill:url(#hatch);stroke:var(--ink);stroke-width:.9}
.gap{fill:url(#hatch);stroke:var(--ink);stroke-width:1}
.t{fill:var(--ink);font-family:var(--f-body);font-size:15px}
.t2{fill:var(--ink-2)}
.tm{font-family:var(--f-mono);font-size:12px;letter-spacing:.05em}
.td{font-family:var(--f-disp);font-weight:600}
.tb6{font-weight:600}
.tsig{fill:var(--signal)}
.tinv{fill:var(--signal-ink)}
.tpaper{fill:var(--paper)}
.halo{paint-order:stroke;stroke:var(--paper);stroke-width:5px;stroke-linejoin:round}
.ring{stroke:var(--paper);stroke-width:3}
.ring-s{stroke:var(--paper);stroke-width:2}
.arc{fill:none;stroke:var(--pencil);stroke-width:1.1;stroke-dasharray:4 4}
.p-bg{fill:var(--paper)}
.p-ln{stroke:var(--hatch);stroke-width:1.3}
.m-ink{fill:var(--ink)}
.m-sig{fill:var(--signal)}
.m-pen{fill:var(--pencil)}
.layer rect{transition:stroke .25s, fill .25s}
.layer.on rect{stroke:var(--signal);stroke-width:2.2;fill:var(--signal-soft)}
.pr{fill:var(--pencil);animation:prmove 5.2s linear infinite}
.pr-m{animation-name:prmove-m}
@keyframes prmove{0%{transform:translateX(0);opacity:0}8%{opacity:1}86%{opacity:1}100%{transform:translateX(-238px);opacity:0}}
@keyframes prmove-m{0%{transform:translateX(0);opacity:0}8%{opacity:1}86%{opacity:1}100%{transform:translateX(-262px);opacity:0}}
@media (prefers-reduced-motion:reduce){.pr{animation:none}}

/* ---------- parts list ---------- */
.bom-wrap{padding:22px 16px 10px}
.bom{width:100%;border-collapse:collapse;font-size:16px}
.bom th{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2);font-weight:500;text-align:left;padding:8px 14px;border-bottom:1.5px solid var(--ink)}
.bom td{padding:14px;border-bottom:1px solid var(--rule);vertical-align:top}
.bom tr:last-child td{border-bottom:0}
.bom td.pos{font-family:var(--f-mono);font-size:13px;color:var(--ink-2);width:64px}
.bom td.name{font-weight:600;width:21%}
.bom td.old{color:var(--ink-2);background-image:repeating-linear-gradient(-45deg, var(--hatch-soft) 0 1px, transparent 1px 7px)}
.bom td.new{border-left:3px solid var(--signal);font-weight:500}
.chip{display:inline-block;margin-left:8px;font-family:var(--f-mono);font-size:10px;letter-spacing:.07em;text-transform:uppercase;padding:2px 7px;border:1px solid var(--ink-2);color:var(--ink-2);vertical-align:2px}
@media (max-width:720px){
  .bom-wrap{padding:6px 12px 4px}
  .bom thead{display:none}
  .bom,.bom tbody,.bom tr,.bom td{display:block;width:100%}
  .bom tr{display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 12px;padding:16px 0;border-bottom:1px solid var(--rule)}
  .bom tr:last-child{border-bottom:0}
  .bom td{padding:0;border:0}
  .bom td.pos{width:auto;padding-top:3px}
  .bom td.name{width:auto;font-size:17px}
  .bom td.old,.bom td.new{grid-column:1 / -1;padding:10px 12px}
  .bom td.old::before,.bom td.new::before{content:attr(data-label);display:block;font-family:var(--f-mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2);font-weight:400;margin-bottom:3px}
  .bom td.new{background:var(--signal-soft)}
}

/* ---------- projects ---------- */
.cards{display:grid;grid-template-columns:repeat(2, minmax(0,1fr));gap:20px}
@media (max-width:760px){.cards{grid-template-columns:minmax(0,1fr)}}
.card{background:var(--paper);border:1.5px solid var(--ink);display:flex;flex-direction:column;min-width:0}
.card-in{display:grid;gap:10px;padding:22px 22px 20px;align-content:start;flex:1}
.card h3{font-family:var(--f-disp);font-weight:600;font-size:25px;line-height:1.1;margin:0}
.fig{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;padding-block:8px;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.fig strong{font-family:var(--f-disp);font-weight:600;font-size:46px;line-height:1;color:var(--signal);font-variant-numeric:tabular-nums;display:inline-flex;align-items:center;gap:10px}
.fig .arr{width:30px;height:16px;stroke:currentColor;stroke-width:2.6;fill:none}
.fig span{color:var(--ink-2);font-size:15.5px}
.card p{margin:0;color:var(--ink-2);font-size:16px}
.card-tb{display:flex;gap:12px;justify-content:space-between;flex-wrap:wrap;border-top:1.5px solid var(--ink);padding:8px 14px}
.card-tb b{font-size:14.5px;font-weight:500}

/* ---------- collaboration ---------- */
.modes3{display:grid;grid-template-columns:repeat(3, minmax(0,1fr));border-top:1.5px solid var(--ink);border-bottom:1px solid var(--rule)}
.modes3 > div{display:grid;gap:8px;align-content:start;padding:22px 24px 24px 0;min-width:0}
.modes3 > div + div{padding-left:24px;border-left:1px solid var(--rule)}
.modes3 h3{font-family:var(--f-disp);font-weight:600;font-size:24px;line-height:1.1;margin:0}
.modes3 p{margin:0;color:var(--ink-2)}
@media (max-width:860px){
  .modes3{grid-template-columns:minmax(0,1fr)}
  .modes3 > div,.modes3 > div + div{padding:20px 0;border-left:0}
  .modes3 > div + div{border-top:1px solid var(--rule)}
}
.keys{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.keys .ml{margin-right:6px}
.keys span:not(.ml){font-size:14.5px;padding:5px 11px;border:1px solid var(--rule);background:var(--paper)}
.where{margin:0;font-size:15px;color:var(--ink-2)}

/* ---------- contact ---------- */
.contact{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:28px 48px;align-items:start;padding:36px;background:var(--paper);border:1.5px solid var(--ink)}
.contact-txt{display:grid;gap:14px;min-width:0}
.contact-txt p{margin:0;color:var(--ink-2);max-width:52ch}
.contact-card{display:grid;gap:4px;border-left:1px solid var(--rule);padding-left:32px;min-width:0}
.cname{font-family:var(--f-disp);font-weight:600;font-size:26px;line-height:1.15;margin-top:4px}
.contact-card dl{margin:12px 0 0;display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 16px}
.contact-card dt{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2);padding-top:4px}
.contact-card dd{margin:0;overflow-wrap:break-word}
.contact-card dd a{text-decoration:none;border-bottom:1px solid var(--rule)}
.contact-card dd a:hover{border-color:var(--ink)}
@media (max-width:820px){
  .contact{grid-template-columns:minmax(0,1fr);padding:24px 20px}
  .contact-card{border-left:0;padding-left:0;border-top:1px solid var(--rule);padding-top:20px}
}

/* ---------- footer ---------- */
.site-footer{margin-top:88px;background:var(--paper);border-top:1.5px solid var(--ink)}
.ft{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,.9fr) minmax(0,1.4fr) minmax(0,.9fr);gap:32px;padding-block:44px 32px}
.ft h2{font-family:var(--f-mono);font-size:11px;font-weight:400;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2);margin:0 0 12px}
.ft ul{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.ft a{text-decoration:none;color:var(--ink);display:inline-block;padding-block:7px;overflow-wrap:break-word}
.ft a:hover{color:var(--signal)}
.ft-brand p{margin:14px 0 0;color:var(--ink-2);font-size:15px;max-width:42ch}
.ft-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;padding-block:16px 28px;border-top:1px solid var(--rule);font-size:14px;color:var(--ink-2)}
@media (max-width:860px){.ft{grid-template-columns:repeat(2, minmax(0,1fr))}.ft-brand{grid-column:1 / -1}}
@media (max-width:460px){.ft{grid-template-columns:minmax(0,1fr)}}

/* ---------- legal + 404 ---------- */
.legal{max-width:820px;padding-block:56px 0}
.legal h1,.notfound h1{font-family:var(--f-disp);font-weight:600;font-size:clamp(2.2rem, 5vw, 3.4rem);line-height:1.02;margin:10px 0 28px}
.legal section{padding-block:22px;border-top:1px solid var(--rule)}
.legal h2{font-size:1.6rem;margin-bottom:12px}
.legal h3{font-family:var(--f-body);font-weight:600;font-size:1.05rem;margin:18px 0 6px}
.legal p,.legal li{color:var(--ink-2);max-width:72ch}
.legal p{margin:0 0 12px}
.legal a{color:var(--signal)}
.notfound{padding-block:96px 24px;display:grid;gap:16px;justify-items:start}
.notfound h1{margin:0}
.notfound p{margin:0;color:var(--ink-2)}