/* RADII TECHNOLOGIES — V13 */
:root{
  --bg:#f4f4f1;--fg:#0b0b0b;--muted:#63635e;--line:rgba(11,11,11,.14);--line-soft:rgba(11,11,11,.07);
  --ink:#f4f4f1;--ink-dim:#a9aaa6;--ink-line:rgba(244,244,241,.14);
  --perch-gold:#c9a227;--perch-cream:#f4f1ea;--live:#2d5b45;
  --sans:"Inter",system-ui,-apple-system,sans-serif;--mono:"IBM Plex Mono",ui-monospace,"SF Mono",monospace;
  --gutter:clamp(1.25rem,4.5vw,4rem);--max:88rem;
  --ease:cubic-bezier(.22,1,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--sans);font-size:1rem;line-height:1.5;-webkit-font-smoothing:antialiased;overflow-x:clip}
h1,h2,h3,p,ul,figure{margin:0}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
::selection{background:var(--fg);color:var(--bg)}
:focus-visible{outline:2px solid currentColor;outline-offset:3px}
.wrap{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter)}
.mono{font-family:var(--mono);font-size:.7rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;line-height:1.7}
.dim{color:var(--muted)}
.dark{background:var(--fg);color:var(--ink)}
.dark .dim{color:var(--ink-dim)}
.dark ::selection{background:var(--ink);color:var(--fg)}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(244,244,241,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line-soft);transition:background .35s var(--ease),color .35s var(--ease),border-color .35s var(--ease)}
.site-header.on-dark{background:rgba(11,11,11,.86);color:var(--ink);border-bottom-color:var(--ink-line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;padding-block:.95rem}
.brandmark{display:inline-flex;align-items:baseline;gap:.55rem;font-weight:500;letter-spacing:.34em;font-size:.82rem}
.brandmark small{font-family:var(--mono);font-weight:400;font-size:.58rem;letter-spacing:.22em;color:var(--muted)}
.on-dark .brandmark small{color:var(--ink-dim)}
.site-nav{display:flex;gap:clamp(1rem,3vw,2.2rem)}
.site-nav a{font-family:var(--mono);font-size:.7rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);transition:color .2s}
.on-dark .site-nav a{color:var(--ink-dim)}
.site-nav a:hover{color:currentColor}
.on-dark .site-nav a:hover{color:var(--ink)}

/* hero */
.hero{position:relative;min-height:min(94vh,62rem);display:flex;flex-direction:column;justify-content:center;overflow:clip}
.hero-geo{position:absolute;inset:0;pointer-events:none;opacity:.9}
.hero-geo svg{width:100%;height:100%}
.hero-inner{position:relative;padding-block:clamp(5rem,12vh,9rem)}
.hero-kicker{margin-bottom:clamp(1.5rem,4vh,3rem);color:var(--ink-dim)}
.ht-radii{display:block;font-weight:300;font-size:clamp(1.1rem,2.6vw,2.1rem);letter-spacing:.55em;color:#d8d8d4;margin-bottom:clamp(.6rem,1.6vw,1.3rem);line-height:1}
.ht-tech{display:block;font-weight:800;font-size:clamp(2.55rem,11.2vw,10.8rem);letter-spacing:-.045em;line-height:.95}
.hero-sub{margin-top:clamp(1.6rem,4vh,2.8rem);font-family:var(--mono);font-size:clamp(.75rem,1.3vw,.92rem);font-weight:500;letter-spacing:.18em;text-transform:uppercase;line-height:2;color:#d8d8d4}
.hero-foot{position:absolute;left:var(--gutter);right:var(--gutter);bottom:clamp(1.4rem,4vh,2.6rem);display:flex;justify-content:space-between;color:var(--ink-dim)}
@keyframes rise{from{opacity:0;transform:translateY(.5rem)}to{opacity:1;transform:none}}
.seq{opacity:0;animation:rise 1s var(--ease) forwards}
.seq.d1{animation-delay:.1s}.seq.d2{animation-delay:.3s}.seq.d3{animation-delay:.55s}
.hero-geo .draw{stroke-dasharray:1;stroke-dashoffset:1;animation:draw 2.2s var(--ease) forwards .6s}
@keyframes draw{to{stroke-dashoffset:0}}

/* statement */
.statement{padding-block:clamp(5rem,14vh,10rem)}
.statement-grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:clamp(2rem,6vw,6rem);align-items:end}
.statement h2{font-size:clamp(1.8rem,4.2vw,3.6rem);font-weight:600;letter-spacing:-.03em;line-height:1.1;max-width:18ch}
.statement p{color:var(--muted);max-width:40ch;line-height:1.7;font-size:1.02rem}
.statement .tick{display:block;width:1.5rem;border-top:1px solid var(--fg);margin-top:1.25rem}

/* work */
.work{border-top:1px solid var(--line)}
.work-head{display:flex;justify-content:space-between;align-items:baseline;padding-block:1.4rem}
.project{border-top:1px solid var(--line);padding-block:clamp(3.5rem,8vh,6rem)}
.project-head{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:baseline;gap:1rem}
.project-name{font-size:clamp(2.4rem,7vw,6rem);font-weight:800;letter-spacing:-.045em;line-height:.95}
.state{display:inline-flex;align-items:center;gap:.5rem;white-space:nowrap}
.state::before{content:"";width:7px;height:7px;border-radius:50%;border:1px solid currentColor}
.state[data-live]{color:var(--live)}
.state[data-live]::before{background:var(--live);border-color:var(--live)}
.project-meta{display:flex;flex-wrap:wrap;gap:.4rem 1.6rem;margin-top:1rem;grid-column:1}
.project-body{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.5fr);gap:clamp(2rem,5vw,5rem);margin-top:clamp(2rem,5vh,3.5rem);align-items:start}
.center-statement{font-size:clamp(1.35rem,2.5vw,2.1rem);font-weight:600;letter-spacing:-.025em;line-height:1.18;max-width:22ch}
.desc{color:var(--muted);line-height:1.7;max-width:42ch;margin-top:1.4rem}
.facts{list-style:none;padding:0;margin:1.8rem 0 0;border-top:1px solid var(--line)}
.facts li{padding:.85rem 0;border-bottom:1px solid var(--line-soft);display:grid;grid-template-columns:2.2rem 1fr;gap:.6rem;font-size:.95rem}
.facts li span:first-child{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;color:var(--muted);padding-top:.25rem}
.cta{display:inline-flex;align-items:baseline;gap:.7rem;margin-top:2rem;font-family:var(--mono);font-size:.78rem;font-weight:500;letter-spacing:.16em;text-transform:uppercase;border-bottom:1px solid currentColor;padding-bottom:.35rem}
.cta .arrow{transition:transform .25s var(--ease)}
.cta:hover .arrow{transform:translateX(.35rem)}

/* perch plate — the product's own identity */
.perch-plate{background:#0b0b0b;border:1px solid #1e1e1e;padding:clamp(1.25rem,3vw,2.5rem);position:relative;overflow:hidden}
.perch-plate::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 50% at 70% 10%,rgba(201,162,39,.12),transparent 70%);pointer-events:none}
.perch-plate-head{display:flex;align-items:center;justify-content:space-between;gap:1rem;color:#9a9a96;margin-bottom:clamp(1rem,2.5vw,1.75rem);position:relative}
.perch-plate-head img{height:34px;width:auto}
.phones{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(.75rem,2vw,1.5rem);align-items:end;position:relative}
.phone{border-radius:clamp(14px,2.4vw,26px);border:4px solid #1a1a1a;background:#000;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.5),inset 0 0 0 1px rgba(255,255,255,.06)}
.phone img{width:100%;height:auto}
.phones .phone:nth-child(2){transform:translateY(-2.5rem)}
.phone-cap{margin-top:.6rem;color:#8a8a86;font-size:.62rem}
.perch-strip{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:clamp(.5rem,1.4vw,1rem);margin-top:clamp(1.25rem,3vw,2rem);position:relative}
.perch-strip .phone{border-width:3px;border-radius:clamp(10px,1.6vw,16px)}
.perch-strip .phone img{filter:saturate(.95)}

/* in-development entries */
.project.dev .project-body{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.dev-note{font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);line-height:2;border-left:1px solid var(--line);padding-left:1.25rem;align-self:start}

/* about + contact */
.about{padding-block:clamp(5rem,14vh,10rem);position:relative;overflow:clip}
.about-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(2rem,6vw,6rem);align-items:start}
.about h2{font-size:clamp(2rem,5vw,4.2rem);font-weight:600;letter-spacing:-.035em;line-height:1.05;max-width:14ch}
.about p{color:#cfcfcb;line-height:1.7;max-width:42ch}
.about .founder{margin-top:2.2rem}
.about .tick{display:block;width:1.5rem;border-top:1px solid var(--ink);margin-top:.9rem}
.about-geo{position:absolute;right:-22vw;top:-30vw;width:70vw;aspect-ratio:1;border:1px solid rgba(244,244,241,.14);border-radius:50%;pointer-events:none}
.contact{border-top:1px solid var(--ink-line);padding-block:clamp(4rem,12vh,8rem)}
.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:2rem;align-items:end}
.contact a.email{display:inline-block;font-size:clamp(1.3rem,3.6vw,3rem);font-weight:600;letter-spacing:-.03em;line-height:1.1;border-bottom:1px solid rgba(244,244,241,.35);padding-bottom:.3rem;word-break:break-all;transition:border-color .2s}
.contact a.email:hover{border-color:var(--ink)}
.contact-note{color:var(--ink-dim);margin-top:1.2rem;max-width:36ch;line-height:1.7}
.site-footer{border-top:1px solid var(--ink-line);padding-block:3rem 2.2rem}
.footer-grid{display:grid;grid-template-columns:1fr auto;gap:1.5rem;align-items:end}
.r-icon{color:#bdbdb9;display:block;margin-bottom:.9rem}
.footer-brand{font-weight:500;letter-spacing:.3em;font-size:.8rem}
.footer-right{text-align:right}

/* detail page (perch.html) */
.detail-hero{padding-block:clamp(4rem,10vh,7rem) clamp(2.5rem,6vh,4rem);border-bottom:1px solid var(--line)}
.crumb{margin-bottom:2rem}
.detail-title{display:flex;align-items:center;gap:clamp(1rem,3vw,2rem);flex-wrap:wrap}
.detail-title img{height:clamp(3rem,8vw,5.5rem);width:auto;background:#0b0b0b;padding:.4rem .6rem}
.detail-title h1{font-size:clamp(3rem,10vw,8.5rem);font-weight:800;letter-spacing:-.045em;line-height:.95}
.section{border-top:1px solid var(--line);padding-block:clamp(3.5rem,8vh,6rem)}
.section-grid{display:grid;grid-template-columns:12rem minmax(0,1fr);gap:2rem}
.section-grid p{font-size:clamp(1.1rem,1.9vw,1.45rem);line-height:1.55;max-width:52ch}
.layers{list-style:none;padding:0;margin:0;counter-reset:l}
.layers li{padding:1.5rem 0;border-bottom:1px solid var(--line-soft);display:grid;grid-template-columns:5rem minmax(0,1fr);gap:1rem;font-size:clamp(1.05rem,1.8vw,1.35rem);font-weight:500;letter-spacing:-.01em;line-height:1.4;max-width:60ch}
.layers li::before{counter-increment:l;content:"0" counter(l);font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;color:var(--muted);padding-top:.35rem}
.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(.75rem,2vw,1.5rem);margin-top:2rem}
.gallery figure{display:grid;gap:.6rem}
.gallery figcaption{color:var(--muted)}
.pager{border-top:1px solid var(--line)}
.pager .wrap{display:flex;justify-content:space-between;padding-block:2rem}

@keyframes rv{from{opacity:0;transform:translateY(.7rem)}to{opacity:1;transform:none}}
.reveal{opacity:0}
.reveal.in{animation:rv .9s var(--ease) forwards}

@media (max-width:60rem){
  .statement-grid,.about-grid,.contact-grid{grid-template-columns:1fr}
  .project-body{grid-template-columns:1fr}
  .project.dev .project-body{grid-template-columns:1fr}
  .project-head{grid-template-columns:minmax(0,1fr)}
  .project-meta{grid-column:1}
  .gallery{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section-grid{grid-template-columns:1fr}
  .about-geo{right:-45vw;top:-40vw;width:100vw}
}
@media (max-width:40rem){
  .phones{grid-template-columns:repeat(2,minmax(0,1fr))}
  .phones .phone:nth-child(2){transform:none}
  .phones .phone:nth-child(3){display:none}
  .perch-strip{grid-template-columns:repeat(3,minmax(0,1fr))}
  .perch-strip figure:nth-child(n+4){display:none}
  .footer-grid{grid-template-columns:1fr}.footer-right{text-align:left}
  .hero-foot{display:none}
  .layers li{grid-template-columns:3rem 1fr}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .seq,.reveal{opacity:1;animation:none}
  .hero-geo .draw{stroke-dasharray:none;stroke-dashoffset:0;animation:none}
}

/* V16: perch section as radii layout */
.project-intro{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(2rem,5vw,5rem);margin-top:clamp(2rem,5vh,3.5rem);align-items:start}
.project-intro .desc{margin-top:0}
.radii-layout{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(2rem,6vw,6rem);margin-top:clamp(3rem,8vh,5.5rem);align-items:start}
.radii-diagram{position:sticky;top:18vh}
.radii-diagram svg{width:min(100%,32rem);height:auto;overflow:visible}
.radii-diagram circle[data-ring]{transition:stroke .5s var(--ease)}
.radii-diagram circle[data-ring].on{stroke:var(--fg)}
.svg-mono{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;fill:var(--muted)}
.radii-layers{display:grid}
.layer{padding:clamp(1.6rem,4vh,2.6rem) 0;border-top:1px solid var(--line)}
.layer:first-child{border-top:0;padding-top:0}
.layer .mono{margin-bottom:.7rem}
.layer-text{font-size:clamp(1.05rem,1.6vw,1.3rem);line-height:1.5;max-width:46ch;letter-spacing:-.01em}
.layer[data-layer="center"] .layer-text{font-weight:500}
.perch-plate{margin-top:clamp(3rem,8vh,5.5rem)}
@media (max-width:60rem){
  .project-intro,.radii-layout{grid-template-columns:1fr}
  .radii-diagram{position:static}
  .radii-diagram svg{width:min(70vw,20rem);margin-inline:auto}
}

.day{display:grid;gap:1rem;border-left:1px solid var(--line);padding-left:1.25rem;margin-top:.25rem}
.day>div .mono{display:block;margin-bottom:.25rem}
.day .layer-text{font-size:clamp(1rem,1.4vw,1.15rem)}