/* ===========================================================
   Colchian Infrastructure — shared styles
   =========================================================== */
:root{
  --polar-night:#071B38; --deep-navy:#0B2545; --navy:#0C2F5F;
  --fleece-gold:#C9A227; --gold-light:#E6C067;
  --arctic-teal:#5BA2B5; --teal-deep:#3F8AA0;
  --muted-blue:#8FA6C4; --ice:#AECBEC; --paper:#EAF1F8;
  --line:rgba(143,166,196,.18); --line-strong:rgba(143,166,196,.32);
  --sans:'IBM Plex Sans',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --serif:'Cormorant Garamond',Georgia,serif;
  --maxw:1160px; --gutter:clamp(20px,5vw,64px);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--polar-night);color:var(--paper);
  font-family:var(--sans);font-weight:300;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;display:block}
:focus-visible{outline:2px solid var(--gold-light);outline-offset:3px}
.skip{position:absolute;left:-999px;top:0;background:var(--fleece-gold);color:var(--polar-night);
  padding:10px 16px;z-index:200;border-radius:0 0 6px 0;font-family:var(--mono);font-size:.8rem}
.skip:focus{left:0}
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}

.eyebrow{font-family:var(--mono);font-size:.72rem;font-weight:500;letter-spacing:.28em;
  text-transform:uppercase;color:var(--fleece-gold);display:inline-flex;gap:.7em;align-items:center;margin:0 0 1.2rem}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--fleece-gold);opacity:.7}

h1,h2,h3{font-weight:400;letter-spacing:-.01em;line-height:1.08;margin:0}
h2{font-size:clamp(1.9rem,4.4vw,3.1rem)}
h3{font-size:clamp(1.15rem,2.2vw,1.45rem);font-weight:500;letter-spacing:0}
p{margin:0 0 1.1rem}
.lead{font-size:clamp(1.05rem,1.7vw,1.25rem);color:var(--ice);font-weight:300;max-width:60ch}
.myth{font-family:var(--serif);font-style:italic;color:var(--gold-light);font-weight:500;
  font-size:clamp(1.35rem,3vw,2rem);line-height:1.3}

/* ---------- nav ---------- */
header.nav{position:fixed;inset:0 0 auto 0;z-index:100;background:rgba(7,27,56,0);
  transition:background .4s,backdrop-filter .4s,border-color .4s;border-bottom:1px solid transparent}
header.nav::before{content:"";position:absolute;inset:0 0 auto 0;height:130px;
  background:linear-gradient(180deg, rgba(7,27,56,.55) 0%, rgba(7,27,56,0) 100%);
  z-index:-1;pointer-events:none;transition:opacity .4s}
header.nav.scrolled{background:rgba(7,27,56,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
header.nav.scrolled::before{opacity:0}
.nav-inner{max-width:var(--maxw);margin-inline:auto;padding:16px var(--gutter);
  display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;font-weight:600;letter-spacing:.34em;font-size:.9rem;color:var(--paper)}
.brand img{height:40px;width:auto;display:block}
footer .brand img{height:34px}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{font-family:var(--mono);font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted-blue);transition:color .25s;padding:6px 0}
.nav-links a:hover{color:var(--paper)}
.nav-links a.active{color:var(--paper)}
.nav-links a.active::after{content:"";display:block;height:1px;background:var(--fleece-gold);margin-top:4px}
.nav-links a.nav-cta{font-family:var(--mono);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;
  border:1px solid var(--line-strong);color:var(--paper)!important;padding:9px 14px;border-radius:2px;transition:.25s}
.nav-links a.nav-cta:hover{border-color:var(--fleece-gold);color:var(--gold-light)!important}
.nav-cta.active::after{display:none}
.nav-toggle{display:none;background:none;border:0;color:var(--paper);cursor:pointer;padding:6px}
@media(max-width:860px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:block}
  .nav-links.open{display:flex;position:absolute;top:100%;right:0;left:0;flex-direction:column;gap:0;
    background:rgba(7,27,56,.97);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);padding:8px 0}
  .nav-links.open a{padding:14px var(--gutter);width:100%}
  .nav-links.open a.active::after{display:none}
}

/* ---------- buttons ---------- */
.btn{font-family:var(--mono);font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;
  padding:14px 26px;border-radius:2px;transition:.25s;display:inline-flex;align-items:center;gap:.6em;
  background:none;cursor:pointer}
.btn-primary{background:var(--fleece-gold);color:var(--polar-night);font-weight:500}
.btn-primary:hover{background:var(--gold-light);transform:translateY(-1px)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--paper)}
.btn-ghost:hover{border-color:var(--arctic-teal);color:#fff}

/* ---------- photo heroes ---------- */
.hero{position:relative;display:flex;align-items:flex-end;overflow:hidden;isolation:isolate}
.hero--home{min-height:100svh;align-items:center}
.hero--page{min-height:clamp(52vh,62svh,660px)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(120% 80% at 80% 6%, rgba(91,162,181,.16), transparent 50%),
    linear-gradient(180deg, rgba(7,27,56,.34) 0%, rgba(7,27,56,.42) 42%, rgba(7,27,56,.93) 100%);}
.hero .wrap{position:relative;z-index:1;padding-top:130px;padding-bottom:clamp(46px,7vw,84px);width:100%}
.hero h1{font-size:clamp(2.2rem,6vw,4.6rem);letter-spacing:-.02em;max-width:17ch;
  text-shadow:0 2px 30px rgba(7,27,56,.55)}
.hero--page h1{font-size:clamp(2rem,5vw,3.5rem)}
.hero h1 .gold{color:var(--gold-light)}
.hero .lead{margin-top:1.5rem;text-shadow:0 1px 16px rgba(7,27,56,.5)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:2.3rem}
#grid{position:absolute;inset:0;width:100%;height:100%;z-index:-1;opacity:.55;mix-blend-mode:screen;pointer-events:none}

/* ---------- readout ---------- */
.readout{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(11,37,69,.5)}
.readout .wrap{display:grid;grid-template-columns:repeat(5,1fr);gap:0}
.stat{padding:30px 22px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat .n{font-family:var(--mono);font-size:clamp(1.3rem,2.4vw,1.9rem);color:var(--gold-light);font-weight:500;line-height:1}
.stat .n small{font-size:.6em;color:var(--muted-blue);font-weight:400}
.stat .k{font-size:.78rem;color:var(--muted-blue);margin-top:.7rem}
@media(max-width:760px){
  .readout .wrap{grid-template-columns:repeat(2,1fr)}
  .stat{border-bottom:1px solid var(--line)}
  .stat:nth-child(2){border-right:0}
  .stat:last-child{grid-column:1/-1;border-right:0;border-bottom:0}
}

/* ---------- bands ---------- */
section{position:relative}
.band{padding:clamp(72px,10vw,140px) 0}
.band--navy{background:var(--deep-navy)}
.band--night{background:var(--polar-night)}
.sec-head{max-width:64ch;margin-bottom:clamp(40px,6vw,72px)}
.sec-head .lead{margin-top:1.4rem}
.rule{height:1px;background:var(--line);border:0;margin:0}

.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s,transform .8s}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(36px,6vw,84px);align-items:start}
@media(max-width:880px){.split{grid-template-columns:1fr}}

/* ---------- feature image band ---------- */
.imgband{position:relative;overflow:hidden;isolation:isolate;min-height:clamp(360px,48vw,520px);
  display:flex;align-items:center}
.imgband .imgband-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.imgband::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(90deg, rgba(7,27,56,.9) 0%, rgba(7,27,56,.7) 45%, rgba(7,27,56,.25) 100%)}
.imgband .box{max-width:52ch;padding-block:clamp(40px,7vw,80px)}

/* ---------- origin card ---------- */
.origin-card{border:1px solid var(--line);border-radius:6px;padding:clamp(26px,4vw,42px);
  background:linear-gradient(160deg,rgba(12,47,95,.5),rgba(7,27,56,.2));position:relative;overflow:hidden}
.origin-card::after{content:"";position:absolute;right:-40px;top:-40px;width:200px;height:200px;
  background:radial-gradient(circle,rgba(201,162,39,.16),transparent 68%)}
.origin-card .glyph{font-family:var(--serif);font-style:italic;font-size:3.4rem;color:var(--fleece-gold);line-height:1;margin-bottom:.4rem}
.origin-card dl{margin:0;display:grid;gap:16px}
.origin-card dt{font-family:var(--mono);font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--arctic-teal)}
.origin-card dd{margin:.25rem 0 0;color:var(--ice);font-size:.98rem}

/* ---------- stages ---------- */
.stages{display:grid;gap:0;border-top:1px solid var(--line)}
.stage{display:grid;grid-template-columns:76px 1fr;gap:clamp(18px,3vw,40px);
  padding:clamp(26px,3.6vw,38px) 0;border-bottom:1px solid var(--line);align-items:baseline}
.stage .idx{font-family:var(--mono);font-size:.8rem;color:var(--fleece-gold);letter-spacing:.1em;padding-top:.35rem}
.stage h3{margin-bottom:.55rem}
.stage p{color:var(--muted-blue);margin:0;max-width:62ch}
.stage .own{display:inline-block;margin-top:.9rem;font-family:var(--mono);font-size:.66rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--arctic-teal);border:1px solid var(--line);border-radius:20px;padding:4px 12px}
.stage .own.exit{color:var(--gold-light);border-color:rgba(201,162,39,.4)}

/* ---------- cards ---------- */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(18px,2.4vw,26px)}
@media(max-width:880px){.grid3{grid-template-columns:1fr}}
.card{border:1px solid var(--line);border-radius:6px;padding:clamp(24px,3vw,34px);background:rgba(11,37,69,.35);
  transition:border-color .3s,transform .3s}
.card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.card .tick{font-family:var(--mono);font-size:.7rem;color:var(--fleece-gold);letter-spacing:.16em;margin-bottom:1rem}
.card h3{margin-bottom:.7rem}
.card p{color:var(--muted-blue);margin:0;font-size:.96rem}

/* ---------- schematic ---------- */
.schematic{border:1px solid var(--line);border-radius:8px;
  background:linear-gradient(180deg,rgba(11,37,69,.55),rgba(7,27,56,.25));padding:clamp(20px,3vw,34px)}
.schematic svg{width:100%;height:auto}
.sch-cap{font-family:var(--mono);font-size:.72rem;color:var(--muted-blue);letter-spacing:.06em;margin-top:16px;text-align:center}
.tech-points{display:grid;grid-template-columns:1fr 1fr;gap:26px 44px}
@media(max-width:880px){.tech-points{grid-template-columns:1fr}}
.tp h3{font-size:1.05rem;margin-bottom:.5rem;color:var(--paper)}
.tp h3 .dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:10px;vertical-align:middle}
.tp p{color:var(--muted-blue);font-size:.95rem;margin:0}

/* ---------- sites ---------- */
.sites-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(16px,2vw,22px)}
@media(max-width:760px){.sites-grid{grid-template-columns:1fr}}
.site{border:1px solid var(--line);border-radius:6px;padding:clamp(22px,3vw,30px);background:rgba(11,37,69,.35);
  position:relative;overflow:hidden;transition:border-color .3s}
.site:hover{border-color:var(--line-strong)}
.site .flag{font-family:var(--mono);font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--arctic-teal)}
.site h3{margin:.8rem 0 .3rem;font-size:1.3rem}
.site .cap{font-family:var(--mono);color:var(--gold-light);font-size:1.05rem}
.site .attrs{list-style:none;margin:1.1rem 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.site .attrs li{font-size:.74rem;color:var(--muted-blue);border:1px solid var(--line);border-radius:20px;padding:4px 11px}
.site .status{margin-top:1.3rem;padding-top:1.1rem;border-top:1px solid var(--line);font-size:.85rem;color:var(--muted-blue)}
.site .status b{color:var(--ice);font-weight:500}
.sites-note{margin-top:clamp(28px,4vw,40px);border:1px dashed var(--line-strong);border-radius:6px;
  padding:clamp(22px,3vw,30px);display:flex;flex-wrap:wrap;gap:18px 30px;align-items:center;justify-content:space-between}
.sites-note p{margin:0;color:var(--ice);max-width:58ch}

/* ---------- founders ---------- */
.founders{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:12px}
@media(max-width:760px){.founders{grid-template-columns:1fr}}
.founder{border:1px solid var(--line);border-radius:6px;padding:24px}
.founder .role{font-family:var(--mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--arctic-teal);margin-bottom:.5rem}
.founder h3{font-size:1.1rem}

/* ---------- contact ---------- */
.contact-box{border:1px solid var(--line-strong);border-radius:8px;padding:clamp(30px,5vw,60px);
  background:linear-gradient(160deg,rgba(12,47,95,.55),rgba(7,27,56,.2));text-align:center}
.contact-box h2{max-width:20ch;margin-inline:auto}
.contact-box .lead{margin:1.4rem auto 2.2rem}
.contact-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ---------- cross-links ---------- */
.next{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2vw,22px)}
@media(max-width:760px){.next{grid-template-columns:1fr}}
.next a{border:1px solid var(--line);border-radius:6px;padding:26px;transition:.3s;background:rgba(11,37,69,.3)}
.next a:hover{border-color:var(--fleece-gold);transform:translateY(-3px)}
.next .k{font-family:var(--mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--arctic-teal);margin-bottom:.7rem}
.next h3{margin-bottom:.4rem}
.next p{color:var(--muted-blue);font-size:.92rem;margin:0}
.next .arrow{color:var(--fleece-gold);margin-top:1rem;font-family:var(--mono);font-size:.8rem}

/* ---------- footer ---------- */
footer{background:var(--polar-night);border-top:1px solid var(--line);padding:56px 0 40px}
.foot-top{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between;align-items:flex-start}
.foot-brand{display:flex;flex-direction:column;gap:14px;max-width:34ch}
.foot-brand .tag{color:var(--muted-blue);font-size:.9rem}
.foot-nav{display:flex;flex-wrap:wrap;gap:14px 26px;font-family:var(--mono);font-size:.74rem;letter-spacing:.08em;text-transform:uppercase}
.foot-nav a{color:var(--muted-blue)}.foot-nav a:hover{color:var(--gold-light)}
.foot-meta{font-family:var(--mono);font-size:.74rem;color:var(--muted-blue);line-height:2;letter-spacing:.04em}
.foot-meta a:hover{color:var(--gold-light)}
.foot-rule{margin:36px 0 22px}
.foot-bottom{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;font-size:.76rem;color:var(--muted-blue)}
.sources{font-size:.72rem;color:rgba(143,166,196,.7);margin-top:14px;line-height:1.7}
.sources a{border-bottom:1px solid var(--line)}
sup{font-size:.62em;color:var(--fleece-gold)}

/* ---------- cookie consent banner ---------- */
.cookie-banner{position:fixed;left:0;right:0;bottom:0;z-index:300;
  background:rgba(7,27,56,.96);backdrop-filter:blur(14px);border-top:1px solid var(--line-strong);
  transform:translateY(100%);opacity:0;transition:transform .35s ease,opacity .35s ease;pointer-events:none}
.cookie-banner.visible{transform:translateY(0);opacity:1;pointer-events:auto}
.cookie-banner-inner{max-width:var(--maxw);margin-inline:auto;padding:22px var(--gutter);
  display:flex;flex-wrap:wrap;gap:18px 30px;align-items:center;justify-content:space-between}
.cookie-banner-inner p{margin:0;color:var(--ice);font-size:.92rem;max-width:62ch}
.cookie-banner-inner a{border-bottom:1px solid var(--line-strong)}
.cookie-banner-inner a:hover{color:var(--gold-light);border-color:var(--gold-light)}
.cookie-banner-actions{display:flex;gap:12px;flex-wrap:wrap}
@media (prefers-reduced-motion:reduce){.cookie-banner{transition:none}}

.linklike{background:none;border:0;padding:0;margin:0;font:inherit;cursor:pointer;color:var(--muted-blue)}
.foot-nav .linklike{font-family:var(--mono);font-size:.74rem;letter-spacing:.08em;text-transform:uppercase}
.foot-nav .linklike:hover{color:var(--gold-light)}

/* no-JS safety net: never hide content if scripting is unavailable */
@media (scripting: none){ .reveal{opacity:1;transform:none} }

/* photo credit (hero) */
.photo-credit{position:absolute;right:var(--gutter);bottom:14px;z-index:2;margin:0;
  font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;color:rgba(174,203,236,.75)}
.photo-credit a{color:rgba(230,192,103,.9);border-bottom:1px solid rgba(230,192,103,.4)}
.photo-credit a:hover{color:var(--gold-light)}