/* ==========================================================================
   PEAK — homepage (layout modeled on tandemloop.in)
   Self-hosted fonts, no external CDNs, no tracking.
   -------------------------------------------------------------------------- */

/* ---------- fonts ---------- */
@font-face{
  font-family:'Instrument Sans';
  font-style:normal;
  font-weight:400 700;
  font-display:swap;
  src:url(../fonts/InstrumentSans.woff2) format('woff2');
}

/* ---------- tokens ---------- */
:root{
  --ink:#0a0a0a;
  --surface:#ffffff;
  --surface-alt:#f5f5f5;
  --text:#1a1a1a;
  --muted:#5b6472;
  --faint:#8a929e;
  --line:#e6e8eb;
  --line-dark:#26282b;
  --accent:#0e7c86;
  --accent-ink:#0a5b63;
  --on-dark:#f5f5f6;
  --on-dark-muted:#a1a1aa;
  --container:1200px;
  --gutter:24px;
  --radius:14px;
  --sans:"Instrument Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --wrap:min(var(--container),100% - (var(--gutter) * 2));
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);font-size:16px;line-height:1.6;color:var(--text);background:var(--surface);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:clip}
img,svg{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-60px;z-index:200;background:var(--ink);color:#fff;padding:10px 16px;border-radius:8px;transition:top .2s}
.skip:focus{top:12px}

.wrap{width:var(--wrap);margin-inline:auto}

/* ---------- type ---------- */
.display{font-size:clamp(38px,6vw,74px);line-height:1.04;letter-spacing:-.02em;font-weight:600;text-wrap:balance}
.h2{font-size:clamp(28px,3.4vw,46px);line-height:1.08;letter-spacing:-.015em;font-weight:600}
.eyebrow{font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;color:var(--muted)}
.section-head .eyebrow{margin-bottom:14px}
.lead{font-size:18px;line-height:1.55;color:var(--muted);max-width:62ch}
.sec-lead{font-size:17px;color:var(--muted);max-width:62ch}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 22px;border-radius:999px;font-weight:600;font-size:15px;line-height:1;border:1px solid transparent;transition:background .2s,color .2s,border-color .2s,transform .2s}
.btn svg{width:15px;height:15px;flex:none;transition:transform .2s}
.btn:hover svg{transform:translateX(3px)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#2a2a2a}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:#e9e9ea}
.btn-outline{border-color:var(--line);color:var(--text);background:#fff}
.btn-outline:hover{border-color:var(--ink)}
.btn-ghost{border-color:var(--line-dark);color:#fff}
.btn-ghost:hover{border-color:#fff}

/* ---------- header ---------- */
.hdr{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.5) blur(10px);border-bottom:1px solid var(--line)}
.hdr-in{display:flex;align-items:center;gap:32px;height:72px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand .mark{width:34px;height:34px;flex:none}
.brand .bt{display:flex;flex-direction:column;line-height:1}
.brand b{font-weight:700;letter-spacing:.18em;font-size:21px;color:var(--ink)}
.brand small{font-size:8.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--faint);margin-top:5px;font-weight:600;white-space:nowrap}
.nav{flex:1}
.nav ul{display:flex;gap:4px;height:72px;align-items:center}
.nav a{padding:9px 14px;border-radius:8px;font-size:14.5px;font-weight:500;color:#3a3f47;transition:background .2s,color .2s}
.nav a:hover{background:var(--surface-alt);color:var(--ink)}
.hdr-cta{margin-left:auto}
.burger{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);border-radius:9px;background:#fff;align-items:center;justify-content:center}
.burger span{position:relative;display:block;width:18px;height:2px;background:var(--ink)}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:transform .2s}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.burger[aria-expanded="true"] span{background:transparent}
.burger[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- section shells ---------- */
.sec{padding:80px 0}
.sec.alt{background:var(--surface-alt)}
.sec.dark{background:var(--ink);color:var(--on-dark)}
.sec.dark .lead,.sec.dark .muted{color:var(--on-dark-muted)}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:48px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(26px,3.2vw,42px);line-height:1.08;letter-spacing:-.01em;font-weight:600;text-wrap:balance}
.sec-head .lead{max-width:520px;font-size:16px;color:var(--muted)}
.sec.dark .sec-head .lead{color:var(--on-dark-muted)}
.sec-head .eyebrow{display:block;margin-bottom:14px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:700}

/* ---------- hero ---------- */
.hero{position:relative;background:#0a0a0a;color:var(--on-dark);overflow:hidden;isolation:isolate}
.hero::before{content:"";position:absolute;left:-10%;right:-10%;top:-30%;height:150%;z-index:-2;filter:blur(12px);
  background:
    radial-gradient(42% 52% at 78% 10%, rgba(14,124,134,.60), transparent 62%),
    radial-gradient(38% 48% at 10% 20%, rgba(29,80,140,.42), transparent 64%),
    radial-gradient(70% 60% at 50% 118%, rgba(14,124,134,.22), transparent 72%),
    radial-gradient(30% 40% at 55% 45%, rgba(70,180,190,.10), transparent 70%)}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(130% 95% at 72% -5%, #000 0%, transparent 68%);
  mask-image:radial-gradient(130% 95% at 72% -5%, #000 0%, transparent 68%)}
.hero .wrap{position:relative;z-index:1;padding:104px 0 80px}
.hero-grid{display:flex;justify-content:space-between;align-items:flex-start;gap:56px}
.hero-copy{flex:1 1 auto;min-width:0;max-width:56%}
.hero-aside{flex:0 0 37.5%;max-width:37.5%;display:flex;flex-direction:column;gap:26px}
.hero h1{font-size:clamp(28px,3.4vw,48px);line-height:1.1;letter-spacing:-.02em;font-weight:600;text-wrap:balance}
.hero .eyebrow{color:var(--accent);margin-bottom:20px}
.hero .lead{color:var(--on-dark-muted);font-size:17px;line-height:1.6}
.hero .hero-actions{margin-top:0}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}
.hero-media{margin-top:64px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-dark);background:#141414}
.hero-media img{width:100%;aspect-ratio:16/7;object-fit:cover}
.hero-stats{display:flex;gap:48px;flex-wrap:wrap;margin-top:40px;padding-top:32px;border-top:1px solid var(--line-dark)}
.hero-stats b{display:block;font-size:clamp(28px,3vw,38px);letter-spacing:-.02em;font-weight:600;color:#fff}
.hero-stats span{font-size:13px;color:var(--on-dark-muted)}

/* ---------- generic card grids ---------- */
.grid{display:grid;gap:24px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}

.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:border-color .2s,transform .2s,box-shadow .2s;height:100%}
.card:hover{border-color:#cfd3d8;transform:translateY(-3px);box-shadow:0 24px 40px -30px rgba(10,10,10,.4)}
.card .ph{aspect-ratio:4/5;overflow:hidden;background:var(--surface-alt)}
.card .ph.wide{aspect-ratio:16/10}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card:hover .ph img{transform:scale(1.05)}
.card .bd{padding:22px;display:flex;flex-direction:column;gap:8px;flex:1}
.card .n{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--faint)}
.card h3{font-size:18px;font-weight:600;letter-spacing:-.01em;line-height:1.25}
.card p{font-size:14.5px;color:var(--muted);line-height:1.55}
.card .go{margin-top:auto;padding-top:10px;font-size:14px;font-weight:600;color:var(--accent);display:inline-flex;align-items:center;gap:8px}
.card .go svg{width:16px;height:16px;transition:transform .2s}
.card:hover .go svg{transform:translateX(4px)}

/* industry tiles */
.tile{position:relative;display:block;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#000;aspect-ratio:16/10}
.tile img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.tile:hover img{transform:scale(1.05)}
.tile::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,10,10,0) 18%,rgba(10,10,10,.55) 55%,rgba(8,8,9,.93) 100%)}
.tile .tcap{position:absolute;left:18px;right:18px;bottom:16px;z-index:1;color:#fff}
.tile .tcap b{display:block;font-size:16px;font-weight:600;line-height:1.25}
.tile .tcap>span{font-size:12.5px;color:#d5d7db;margin-top:5px;display:block;line-height:1.45}

/* capability cards — tandemloop format (full-bleed portrait card, hover/click reveals detail) */
.caps{display:grid;grid-auto-flow:column;grid-auto-columns:max(290px,calc((100% - 4.875rem)/4));gap:26px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding-bottom:6px}
.caps::-webkit-scrollbar{display:none}
.caps>li{display:flex;scroll-snap-align:start}
.cap{position:relative;isolation:isolate;display:flex;flex-direction:column;width:100%;aspect-ratio:300/485;border-radius:14px;overflow:hidden;background:#007082;color:#fff;--cap-accent:#007082;--cap-accent-deep:#005e6d;text-decoration:none;cursor:pointer}
.cap>*{display:block}
.cap::before{content:"";position:absolute;inset:0;z-index:-5;pointer-events:none;background:linear-gradient(180deg,rgba(0,22,26,.88) 0%,rgba(0,26,31,.55) 40%,rgba(0,26,30,.28) 68%,rgba(0,38,45,0) 100%)}
.cap-summary{position:relative;z-index:3;display:flex;flex-direction:column;gap:12px;padding:24px 24px 16px;color:#fff}
.cap-cat{font-size:12px;text-transform:uppercase;line-height:1.4;letter-spacing:.02em}
.cap h3{font-size:clamp(19px,1.6vw,24px);font-weight:600;line-height:1.15;letter-spacing:-.01em;text-wrap:balance}
.cap-img{position:absolute;inset:0;z-index:-10;width:100%;height:100%;object-fit:cover;transition:transform .55s ease}
.cap:hover .cap-img{transform:scale(1.07)}
.cap-fill{position:absolute;inset:0;z-index:-10;opacity:0;background-image:linear-gradient(141deg,var(--cap-accent),var(--cap-accent-deep));transition:opacity .3s}
.cap:hover .cap-fill{opacity:1}
.cap-detail{position:relative;z-index:2;max-height:0;overflow:hidden;padding:0 24px;font-size:15px;line-height:1.55;color:#fff;opacity:0;transition:max-height .35s ease,opacity .3s ease}
.cap:hover .cap-detail{max-height:360px;opacity:1}
.cap-cta{position:absolute;z-index:3;right:24px;bottom:24px;display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:#fff;opacity:0;transition:opacity .3s}
.cap:hover .cap-cta,.cap:focus-visible .cap-cta{opacity:1}
.cap-cta svg{width:17px;height:17px;transition:transform .2s}
.cap:hover .cap-cta svg{transform:translateX(3px)}

/* product tags */
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 24px}
.tags li{display:inline-flex;align-items:center;gap:8px;font-size:13px;padding:7px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;line-height:1}
.tags li b{font-weight:500;color:var(--text)}
.tags li i{font-style:normal;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.tags li i.live{color:var(--accent)}

/* product blocks */
.prod{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;padding:40px 0}
.prod+.prod{border-top:1px solid var(--line)}
.prod.rev .prod-body{order:2}
.prod-fig{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--surface-alt)}
.prod.rev .prod-fig{order:1}
.prod .badge{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.prod h3{font-size:clamp(24px,2.4vw,32px);letter-spacing:-.02em;font-weight:600;margin-bottom:14px}
.prod p{color:var(--muted);font-size:16px;margin-bottom:20px}
.facts{display:flex;gap:34px;flex-wrap:wrap;margin-bottom:24px}
.prod .prod-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}

/* work / outcome cards */
.work{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.work article{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:border-color .2s,transform .2s}
.work article:hover{border-color:#cfd3d8;transform:translateY(-3px)}
.work .ph{aspect-ratio:16/9;overflow:hidden;background:var(--surface-alt)}
.work .ph img{width:100%;height:100%;object-fit:cover}
.work .bd{padding:26px}
.work .stat{font-size:clamp(30px,3.4vw,46px);font-weight:600;letter-spacing:-.03em;line-height:1;color:var(--ink)}
.work .stat span{color:var(--accent)}
.work h3{font-size:17px;font-weight:600;margin:12px 0 8px;line-height:1.35}
.work p{font-size:14.5px;color:var(--muted)}

/* careers */
.careers{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.careers h2{font-size:clamp(28px,3.4vw,46px);line-height:1.06;letter-spacing:-.02em;font-weight:600;max-width:16ch}
.careers p{color:var(--muted);font-size:17px;margin:20px 0 30px;max-width:52ch}
.team-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.team-strip img{aspect-ratio:1/1;width:100%;height:100%;object-fit:cover;border-radius:12px}
.team-strip img:nth-child(1){border-radius:12px 12px 12px 12px}

/* contact */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start}
.contact h1,.contact h2{font-size:clamp(30px,3.6vw,48px);line-height:1.05;letter-spacing:-.02em;font-weight:600}
.contact .lead{color:var(--on-dark-muted);margin-top:18px;max-width:44ch}
.contact-list{display:grid;gap:10px;margin-top:30px}
.contact-list a,.contact-list div{display:grid;grid-template-columns:44px 1fr;gap:14px;align-items:center;padding:12px 14px;border:1px solid var(--line-dark);border-radius:12px;transition:border-color .2s,background .2s}
.contact-list a:hover{border-color:#4a4d52;background:#141414}
.contact-list .ci{width:44px;height:44px;border-radius:10px;background:#1c1e21;display:grid;place-items:center}
.contact-list .ci svg{width:19px;height:19px;stroke:#c6c9cd;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.contact-list small{display:block;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--on-dark-muted);margin-bottom:3px}
.contact-list b{font-size:15px;color:#fff;line-height:1.3}

.formcard{background:#fff;border-radius:16px;padding:32px;color:var(--text)}
.formcard h3{font-size:21px;letter-spacing:-.01em;font-weight:600;margin-bottom:6px}
.formcard .sub{font-size:14px;color:var(--muted);margin-bottom:22px}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:12.5px;font-weight:600;color:#3a3f47}
.field label i{color:#c0392b;font-style:normal}
.field input,.field select,.field textarea{width:100%;font:inherit;font-size:15px;color:var(--text);padding:13px 14px;border:1px solid #d3d6da;background:#fff;border-radius:9px;transition:border-color .2s,box-shadow .2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(14,124,134,.15)}
.field textarea{min-height:120px;resize:vertical}
.field .err{display:none;font-size:12.5px;color:#b3261e}
.field.bad input,.field.bad select,.field.bad textarea{border-color:#b3261e}
.field.bad .err{display:block}
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;opacity:0}
.form-foot{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:20px}
.form-note{font-size:13px;color:var(--muted);max-width:340px}
.form-note a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.form-status{display:none;margin-top:18px;padding:14px 16px;border-radius:10px;font-size:14.5px;line-height:1.5}
.form-status.ok{display:block;background:#e7f6f4;color:#0a5b63}
.form-status.err{display:block;background:#fdecea;color:#8f2016}

/* ---------- footer ---------- */
.ftr{background:var(--ink);color:var(--on-dark-muted);padding:72px 0 0;font-size:14px}
.ftr-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.ftr .brand b{color:#fff}
.ftr .brand small{color:var(--on-dark-muted)}
.ftr p{margin-top:18px;max-width:320px;line-height:1.6}
.ftr h4{color:#fff;font-size:12px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:16px;font-weight:600}
.ftr li{margin-bottom:9px}
.ftr a:hover{color:#fff}
.ftr-bar{border-top:1px solid var(--line-dark);padding:22px 0;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12.5px}
.ftr-bar nav{display:flex;gap:20px;flex-wrap:wrap}

/* mobile contact bar */
.mbar{display:none}

/* reveal */
.js .rv{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in,.js .reveal.in *{opacity:1}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}.js .reveal{opacity:1;transform:none}}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .prod{grid-template-columns:1fr;gap:26px}
  .prod.rev .prod-body{order:0}
  .careers,.contact-grid{grid-template-columns:1fr;gap:40px}
  .ftr-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .g4,.g3{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:1080px){
  .caps{grid-auto-flow:row;grid-template-columns:repeat(4,1fr);grid-auto-columns:auto;overflow:visible;scroll-snap-type:none;padding-bottom:0}
}
@media (max-width:900px){
  .nav{position:fixed;left:0;right:0;top:72px;bottom:0;background:#fff;border-top:1px solid var(--line);overflow:auto;padding:16px 24px 120px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .25s,transform .25s,visibility .25s;z-index:60}
  .nav.open{opacity:1;visibility:visible;transform:none}
  .nav ul{flex-direction:column;align-items:stretch;height:auto;gap:0}
  .nav a{padding:16px 4px;border-bottom:1px solid var(--line);font-size:17px;border-radius:0;display:block}
  .hdr-cta{display:none}
  .burger{display:inline-flex}
  .nav .nav-cta-m{display:inline-flex;margin-top:20px}
}
@media (max-width:900px){
  .hero-grid{flex-direction:column;gap:32px}
  .hero-copy,.hero-aside{max-width:100%;flex-basis:auto}
  .hero-aside{max-width:640px}
}
@media (max-width:760px){
  :root{--gutter:16px}
  .sec{padding:56px 0}
  .hero .wrap{padding:64px 0 56px}
  .g4,.g3,.g2{grid-template-columns:1fr}
  .work{grid-template-columns:1fr}
  .hero-stats{gap:28px}
  .team-strip{grid-template-columns:repeat(2,1fr)}
  .ftr-grid{grid-template-columns:1fr;gap:30px}
  .fgrid{grid-template-columns:1fr}
  .formcard{padding:22px}
  .hero-media img{aspect-ratio:16/10}
  body{padding-bottom:60px}
  .mbar{display:grid;grid-template-columns:1fr 1fr;position:fixed;left:0;right:0;bottom:0;z-index:70;background:var(--ink);border-top:1px solid var(--line-dark)}
  .mbar a{display:flex;align-items:center;justify-content:center;padding:16px 10px;font-weight:600;font-size:14px;color:#fff}
  .mbar a+a{background:var(--accent)}
}
.nav-cta-m{display:none}
@media (prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none}}