/* i-square.be site — layout on top of brand-be tokens (assets/brand/tokens.css). Only token colours. */

:root{--wrap:1120px;--gutter:clamp(16px,5vw,48px);--header-h:72px}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px)}
body{color:var(--ink-70);font-size:17px;line-height:1.6;background:var(--paper)}
h1,h2,h3{font-family:var(--font-display);font-weight:var(--display-weight);letter-spacing:var(--display-track);color:var(--ink);margin:0}
p{margin:0 0 1em}
:focus-visible{outline:2px solid var(--accent-ink);outline-offset:3px;border-radius:var(--r-sm)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.skip{position:absolute;left:-999px;top:8px;background:var(--paper);padding:8px 14px;border-radius:var(--r-md);z-index:20}
.skip:focus{left:8px}

/* Logo lockup — mirrors <isqbe-logo variant="horizontal"> from be-kit.js */
.logo{display:inline-flex;align-items:center;gap:.55em;font-size:12px;line-height:1;color:var(--graphite)}
.logo img{width:3.2em;height:3.2em;flex:none}
.logo span{font-family:var(--font-logo);font-weight:300;font-size:2.15em;letter-spacing:.04em;white-space:nowrap}
.logo:hover{color:var(--graphite)}

/* Header */
.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:24px}
.nav{display:flex;gap:28px;font-size:15px}
.nav a{color:var(--ink-70)}
.nav a:hover,.nav a[aria-current]{color:var(--accent-ink)}

/* Hero — navy surface with node field */
.hero{position:relative;overflow:hidden;background:var(--hero-bg);color:var(--hero-ink);padding:clamp(72px,12vw,140px) 0 clamp(64px,10vw,120px)}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle,var(--accent-2) 1.6px,transparent 2px);background-size:28px 28px;opacity:.28;
  -webkit-mask-image:linear-gradient(90deg,black 0%,transparent 55%);mask-image:linear-gradient(90deg,black 0%,transparent 55%)}
.hero .wrap{position:relative;display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:48px;align-items:center}
.hero h1{color:var(--hero-ink);font-size:clamp(40px,6.4vw,76px);line-height:1.02;margin:18px 0 26px}
.hero .lead{color:var(--hero-mute);font-size:clamp(18px,1.8vw,21px);max-width:36em;margin-bottom:36px}
.hero .eyebrow{color:var(--hero-mute)}
.hero .mark{justify-self:end;width:min(100%,340px);opacity:.95}
.hero .btn-ghost{color:var(--hero-ink);border-color:rgba(255,255,255,.35)}
.hero .btn-ghost:hover{border-color:var(--hero-ink);color:var(--hero-ink)}
.hero .btn-primary{background:var(--paper);color:var(--hero-bg)}
.hero .btn-primary:hover{color:var(--hero-bg)}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.eyebrow::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:10px;vertical-align:middle;transform:translateY(-1px)}

/* Sections */
.section{padding:clamp(64px,9vw,112px) 0}
.section.alt{background:var(--paper-2)}
.section-head{max-width:42em;margin-bottom:48px}
.section-head h2{font-size:clamp(30px,3.6vw,44px);line-height:1.1;margin:14px 0 16px}
.section-head p{font-size:19px}

.pillars{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;list-style:none;margin:0;padding:0}
.pillar{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 24px 26px;box-shadow:var(--sh-1);transition:box-shadow .2s,transform .2s}
.pillar:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.pillar .num{font-family:var(--font-mono);font-size:13px;color:var(--accent);letter-spacing:.1em}
.pillar h3{font-size:22px;line-height:1.15;margin:18px 0 12px}
.pillar p{font-size:15.5px;margin:0}

.about{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:clamp(32px,6vw,80px);align-items:start}
.about h2{font-size:clamp(30px,3.6vw,44px);line-height:1.1;margin:14px 0 0}
.about .person{margin-top:28px;display:flex;align-items:center;gap:14px}
.about .person img{width:44px;height:44px}
.about .person strong{display:block;color:var(--ink);font-weight:500}
.about .person span{font-size:14px;color:var(--ink-50)}
.dots{display:flex;gap:8px;margin-bottom:28px}
.dots i{width:10px;height:10px;border-radius:50%;background:var(--accent)}
.dots i:nth-child(1){opacity:.18}.dots i:nth-child(2){opacity:.4}.dots i:nth-child(3){opacity:.7}

.contact{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.contact .card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 24px}
.contact .card .eyebrow{display:block;margin-bottom:12px;color:var(--accent-ink)}
.contact .card .eyebrow::before{display:none}
.contact .card p{margin:0;color:var(--ink)}
.contact .card a{font-size:18px}
address{font-style:normal}

/* Legal pages */
.legal-head{background:var(--paper-2);border-bottom:1px solid var(--line);padding:clamp(48px,7vw,88px) 0 40px}
.legal-head h1{font-size:clamp(34px,4.6vw,54px);line-height:1.05;margin:14px 0 14px}
.legal-head p{margin:0;color:var(--ink-50)}
.legal{display:grid;grid-template-columns:240px minmax(0,1fr);gap:clamp(32px,5vw,72px);padding-top:48px;padding-bottom:96px}
.toc{position:sticky;top:calc(var(--header-h) + 24px);align-self:start;font-size:14px}
.toc ol{list-style:none;margin:12px 0 0;padding:0;counter-reset:toc}
.toc li{counter-increment:toc;margin:0}
.toc a{display:flex;gap:10px;padding:5px 0;color:var(--ink-70)}
.toc a::before{content:counter(toc,decimal-leading-zero);font-family:var(--font-mono);font-size:12px;color:var(--accent);padding-top:2px}
.toc a:hover{color:var(--accent-ink)}
.article{max-width:44em;margin-bottom:44px}
.article h2{font-size:24px;line-height:1.2;margin-bottom:16px;display:flex;gap:14px;align-items:baseline}
.article h2 .num{font-family:var(--font-mono);font-size:14px;color:var(--accent);font-weight:400;letter-spacing:.06em}
.article ol{margin:0;padding:0;list-style:none}
.article li{position:relative;padding-left:3.2em;margin-bottom:12px;font-size:16px}
.article li .n{position:absolute;left:0;top:.15em;font-family:var(--font-mono);font-size:13px;color:var(--ink-50)}
.lang-switch{display:inline-flex;gap:6px;margin-top:22px}
.lang-switch a{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;padding:6px 12px;border-radius:var(--r-pill);border:1px solid var(--line);color:var(--ink-70);background:var(--paper)}
.lang-switch a[aria-current]{background:var(--hero-bg);border-color:var(--hero-bg);color:var(--hero-ink)}

/* 404 */
.notfound{padding-top:clamp(96px,14vw,180px);padding-bottom:clamp(96px,14vw,180px)}
.notfound h1{font-size:clamp(36px,5vw,60px);margin:14px 0 18px}

/* Footer */
.site-footer{border-top:2px solid transparent;border-image:var(--grad) 1;padding:40px 0 48px;font-size:14px;color:var(--ink-50)}
.site-footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:20px 40px;align-items:center}
.site-footer nav{display:flex;flex-wrap:wrap;gap:22px}
.site-footer a{color:var(--ink-70)}
.site-footer a:hover{color:var(--accent-ink)}
.site-footer .tagline{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase}

@media (max-width:960px){
  .pillars{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero .wrap{grid-template-columns:1fr}
  .hero .mark{display:none}
  .about{grid-template-columns:1fr}
  .legal{grid-template-columns:1fr}
  .toc{position:static;border:1px solid var(--line);border-radius:var(--r-lg);padding:18px 20px;background:var(--paper-2)}
}
@media (max-width:640px){
  body{font-size:16px}
  .nav{gap:18px}.nav a:not(.nav-cta){display:none}
  .pillars,.contact{grid-template-columns:1fr}
  .article li{padding-left:2.8em}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.pillar,.btn{transition:none}}
@media print{.site-header,.toc,.site-footer,.lang-switch{display:none}.legal{display:block;padding:0}}