/* ============================================================
   SEIGENTIC — site system
   Light-minimal Swiss. Archivo + IBM Plex Mono. Signal Vermilion.
   ============================================================ */

/* self-hosted fonts (no external CDN, GDPR-friendly) */
@font-face{font-family:"Archivo";font-style:normal;font-weight:400 800;font-display:swap;src:url("fonts/archivo-var.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url("fonts/plexmono-400.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:500;font-display:swap;src:url("fonts/plexmono-500.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:600;font-display:swap;src:url("fonts/plexmono-600.woff2") format("woff2")}

:root{
  --paper:#FFFFFF; --off:#F7F7F5; --band:#F1F1EE;
  --ink:#14171A; --graphite:#5B6166; --mist:#E4E4E0; --hair:#ECECE8;
  --signal:#F0451F; --signal-ink:#C9350F;
  --data:#2B5FAC; --pos:#1F8A5B;
  --pad:clamp(20px,5vw,72px);
  --maxw:1160px;
  --ease:cubic-bezier(.16,1,.3,1);
  --r:12px; --r-lg:18px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:78px}
body{
  background:var(--paper);color:var(--ink);
  font-family:"Archivo",system-ui,sans-serif;font-size:16px;line-height:1.55;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--signal);color:#fff}
:focus-visible{outline:2.5px solid var(--signal);outline-offset:3px;border-radius:2px}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad);width:100%}
.mono{font-family:"IBM Plex Mono",ui-monospace,monospace;font-variant-numeric:tabular-nums}
.sig{color:var(--signal)}
.eyebrow{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--graphite)}

/* ---------- type scale ---------- */
h1,h2,h3,h4{letter-spacing:-.03em;line-height:1.03;font-weight:800}
.h-display{font-size:clamp(38px,6.6vw,74px);letter-spacing:-.045em;line-height:.98}
h2{font-size:clamp(26px,3.8vw,44px)}
h3{font-size:clamp(19px,2.2vw,24px);letter-spacing:-.02em}
.lead{font-size:clamp(16px,1.7vw,19px);color:var(--graphite);max-width:56ch}
.muted{color:var(--graphite)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:15px;
  padding:12px 20px;border-radius:10px;border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  white-space:nowrap}
.btn svg{width:18px;height:15px}
.btn:active{transform:translateY(1px)}
.btn-solid{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-solid:hover{background:var(--signal);border-color:var(--signal)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--mist)}
.btn-ghost:hover{border-color:var(--ink)}
.btn-signal{background:var(--signal);color:#fff;border-color:var(--signal);font-size:16px;padding:14px 24px}
.btn-signal:hover{background:var(--signal-ink);border-color:var(--signal-ink)}
.link-arrow{display:inline-flex;align-items:center;gap:7px;font-weight:600;color:var(--ink)}
.link-arrow .ar{transition:transform .2s var(--ease);color:var(--signal)}
.link-arrow:hover .ar{transform:translateX(4px)}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--hair)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:70px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:21px;letter-spacing:-.04em}
.brand svg{width:31px;height:25px}
.brand i{color:var(--signal);font-style:normal}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a:not(.btn){font-size:14.5px;color:var(--graphite);padding:8px 12px;border-radius:8px;
  transition:color .15s,background .15s}
.nav-links a:not(.btn):hover{color:var(--ink);background:var(--off)}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-links .btn{margin-left:10px}
.nav-toggle{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;color:var(--ink)}
.nav-toggle svg{width:24px;height:24px}
@media(max-width:900px){
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-links{position:fixed;inset:70px 0 auto 0;flex-direction:column;align-items:stretch;gap:2px;
    background:var(--paper);border-bottom:1px solid var(--mist);padding:14px var(--pad) 24px;
    transform:translateY(-14px);opacity:0;pointer-events:none;transition:opacity .25s var(--ease),transform .25s var(--ease)}
  .nav-links.open{opacity:1;transform:none;pointer-events:auto}
  .nav-links a:not(.btn){padding:14px 12px;font-size:17px;border-bottom:1px solid var(--hair)}
  .nav-links .btn{margin:14px 0 0;justify-content:center;font-size:16px;padding:14px}
}

/* ---------- section rhythm ---------- */
section{padding:clamp(64px,9vw,120px) 0}
.section-sep{border-top:1px solid var(--hair)}
.section-head{max-width:60ch;margin-bottom:clamp(32px,5vw,52px)}
.section-head h2{margin-top:10px}
.section-head .lead{margin-top:16px}

/* ---------- hero ---------- */
.hero{position:relative;padding-top:clamp(40px,6vw,84px);padding-bottom:clamp(48px,7vw,96px);overflow:hidden}
.hero-grid{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--hair) 1px,transparent 1px),linear-gradient(90deg,var(--hair) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(120% 85% at 82% 6%,#000,transparent 66%);
  -webkit-mask-image:radial-gradient(120% 85% at 82% 6%,#000,transparent 66%)}
.hero-in{position:relative;display:grid;grid-template-columns:1.06fr .94fr;gap:clamp(28px,5vw,64px);align-items:center}
@media(max-width:860px){.hero-in{grid-template-columns:1fr;gap:34px}}
.hero h1{margin:20px 0 0}
.hero .lead{margin-top:22px}
.hero-cta{margin-top:30px;display:flex;gap:12px;flex-wrap:wrap}
.hero-visual{position:relative}

/* ---------- trust strip ---------- */
.trust{padding:26px 0;border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);background:var(--off)}
.trust-in{display:flex;align-items:center;gap:clamp(20px,4vw,48px);flex-wrap:wrap;justify-content:center}
.trust .lbl{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--graphite)}
.trust img{height:24px;width:auto;opacity:.62;filter:grayscale(1);transition:opacity .2s}
.trust img:hover{opacity:1;filter:none}

/* ---------- generic grids ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,26px)}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:860px){.g-3,.g-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.g-2,.g-3,.g-4{grid-template-columns:1fr}}

/* ---------- cards ---------- */
.card{border:1px solid var(--mist);border-radius:var(--r-lg);background:var(--paper);overflow:hidden}
.card-pad{padding:clamp(22px,3vw,30px)}
.card-media{aspect-ratio:16/10;background:var(--band);overflow:hidden;position:relative}
.card-media img{width:100%;height:100%;object-fit:cover}
.card .kicker{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--graphite)}
.tag{display:inline-flex;align-items:center;font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.05em;
  padding:5px 10px;border:1px solid var(--mist);border-radius:999px;color:var(--graphite);background:var(--paper)}
.tag.on{background:var(--ink);color:#fff;border-color:var(--ink)}

/* feature bento (services overview) */
.bento{display:grid;grid-template-columns:1.3fr 1fr 1fr;grid-auto-rows:1fr;gap:16px}
.bento .b-lead{grid-row:span 2}
@media(max-width:860px){.bento{grid-template-columns:1fr 1fr}.bento .b-lead{grid-row:auto;grid-column:span 2}}
@media(max-width:600px){.bento{grid-template-columns:1fr}.bento .b-lead{grid-column:auto}}
.tile{border:1px solid var(--mist);border-radius:var(--r-lg);padding:clamp(22px,3vw,30px);
  display:flex;flex-direction:column;gap:12px;transition:border-color .2s,transform .2s var(--ease)}
.tile:hover{border-color:var(--ink)}
.tile .ico{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:var(--off);color:var(--ink)}
.tile .ico svg{width:22px;height:22px}
.tile.dark{background:var(--ink);color:#fff;border-color:var(--ink)}
.tile.dark .muted{color:#B9BDC1}
.tile.dark .ico{background:#20242A;color:#fff}
.tile.accent{background:var(--signal);color:#fff;border-color:var(--signal)}
.tile.accent .muted{color:#FFE1D8}
.tile.accent .ico{background:rgba(255,255,255,.16);color:#fff}
.tile h3{font-size:19px}
.tile p{font-size:14.5px}

/* ---------- ledger ---------- */
.ledger{border:1.5px solid var(--ink);border-radius:var(--r-lg);overflow:hidden;background:var(--paper)}
.ledger-head{display:flex;justify-content:space-between;padding:13px 18px;background:var(--off);border-bottom:1.5px solid var(--ink)}
.lrow{display:flex;justify-content:space-between;gap:16px;padding:12px 18px;border-bottom:1px solid var(--mist)}
.lrow .k{font-size:15px}
.lrow .v{font-family:"IBM Plex Mono",monospace;font-weight:500;font-size:15px;white-space:nowrap}
.lrow .v.none{color:var(--graphite)}
.lrow.final{background:var(--ink);border-bottom:0;padding:16px 18px}
.lrow.final .k{color:#fff;font-weight:700;font-size:16px}
.lrow.final .v{color:var(--signal);font-weight:600;font-size:16px}

/* ---------- timeline ---------- */
.tl{border-top:1.5px solid var(--ink)}
.step{display:grid;grid-template-columns:104px 1fr;gap:clamp(14px,3vw,36px);padding:22px 0;border-bottom:1px solid var(--mist)}
@media(max-width:560px){.step{grid-template-columns:66px 1fr;gap:14px}}
.step .t{font-family:"IBM Plex Mono",monospace;font-weight:600;font-size:clamp(15px,2.4vw,20px);color:var(--graphite)}
.step.key .t{color:var(--signal)}
.step h3{margin-bottom:6px;font-size:17px}
.step p{font-size:15px;color:var(--graphite);max-width:60ch}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--mist);border:1px solid var(--mist);border-radius:var(--r-lg);overflow:hidden}
@media(max-width:600px){.stats{grid-template-columns:1fr}}
.stat{background:var(--paper);padding:clamp(24px,3.4vw,34px)}
.stat .n{font-family:"IBM Plex Mono",monospace;font-weight:600;font-size:clamp(30px,4.6vw,46px);letter-spacing:-.03em;line-height:1}
.stat .n .u{color:var(--signal)}
.stat .c{margin-top:10px;color:var(--graphite);font-size:14.5px}

/* ---------- pricing ---------- */
.prices{display:grid;grid-template-columns:1fr 1fr;border:1.5px solid var(--ink);border-radius:var(--r-lg);overflow:hidden}
@media(max-width:720px){.prices{grid-template-columns:1fr}}
.price{padding:clamp(26px,3.6vw,38px)}
.price+.price{border-left:1.5px solid var(--ink)}
@media(max-width:720px){.price+.price{border-left:0;border-top:1.5px solid var(--ink)}}
.price .amt{font-family:"IBM Plex Mono",monospace;font-weight:600;font-size:clamp(28px,4.4vw,40px);letter-spacing:-.03em;margin:12px 0 3px;line-height:1}
.price .per{font-size:13px;color:var(--graphite);margin-bottom:18px}
.price ul{list-style:none}
.price li{padding:9px 0;border-top:1px solid var(--mist);display:flex;gap:10px;font-size:14.5px}
.price li::before{content:"[•]";color:var(--signal);font-family:"IBM Plex Mono",monospace;font-size:12px;flex:none;margin-top:1px}

/* ---------- split (about, feature) ---------- */
.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(28px,5vw,64px);align-items:center}
@media(max-width:820px){.split{grid-template-columns:1fr;gap:32px}}
.portrait{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--mist);background:var(--band);aspect-ratio:4/5;position:relative}
.portrait img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.02)}
.portrait .badge{position:absolute;left:16px;bottom:16px;background:var(--paper);border:1px solid var(--mist);border-radius:10px;
  padding:9px 13px;font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.04em}

/* ---------- values list ---------- */
.values{list-style:none;border-top:1px solid var(--mist)}
.values li{display:grid;grid-template-columns:40px 1fr;gap:16px;padding:20px 0;border-bottom:1px solid var(--mist)}
.values .n{font-family:"IBM Plex Mono",monospace;color:var(--signal);font-size:13px;padding-top:3px}
.values h4{font-size:17px;font-weight:700;letter-spacing:-.01em;margin-bottom:5px}
.values p{color:var(--graphite);font-size:14.5px;max-width:60ch}

/* ---------- marquee (one per page) ---------- */
.marq{border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);overflow:hidden;background:var(--paper);padding:20px 0}
.marq-track{display:flex;gap:52px;width:max-content;animation:marq 34s linear infinite}
.marq:hover .marq-track{animation-play-state:paused}
.marq span{font-weight:800;letter-spacing:-.02em;font-size:clamp(18px,2.2vw,26px);color:var(--ink);display:inline-flex;align-items:center;gap:52px}
.marq span::after{content:"[•]";color:var(--signal);font-family:"IBM Plex Mono",monospace;font-size:15px}
@keyframes marq{to{transform:translateX(-50%)}}

/* ---------- dark CTA band (single inverted moment) ---------- */
.cta{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.cta .cgrid{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:48px 48px;mask-image:radial-gradient(90% 120% at 90% 0%,#000,transparent 68%);
  -webkit-mask-image:radial-gradient(90% 120% at 90% 0%,#000,transparent 68%)}
.cta .wrap{position:relative}
.cta h2{max-width:20ch}
.cta p{color:#C6C8CB;max-width:52ch;margin-top:16px}
.cta .hero-cta{margin-top:28px}

/* ---------- forms ---------- */
.form{display:grid;gap:18px}
.field{display:grid;gap:8px}
.field label{font-size:13.5px;font-weight:600}
.field .hint{font-size:12.5px;color:var(--graphite)}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:15px;color:var(--ink);background:var(--paper);
  border:1.5px solid var(--mist);border-radius:10px;padding:12px 14px;width:100%;transition:border-color .15s,box-shadow .15s}
.field textarea{min-height:130px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#9AA0A4}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(20,23,26,.08)}
.field.invalid input,.field.invalid textarea,.field.invalid select{border-color:var(--signal)}
.field .err{font-size:12.5px;color:var(--signal-ink);display:none}
.field.invalid .err{display:block}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:600px){.form-row{grid-template-columns:1fr}}
.form-note{font-size:12.5px;color:var(--graphite)}
.form-success{display:none;border:1.5px solid var(--pos);background:#F0FAF5;border-radius:var(--r-lg);padding:24px}
.form-success.show{display:block}
.form-success h3{color:var(--pos);font-size:19px;margin-bottom:6px}

/* ---------- footer ---------- */
.foot{background:var(--ink);color:#fff;padding:clamp(48px,7vw,80px) 0 34px}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
@media(max-width:720px){.foot-top{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.foot-top{grid-template-columns:1fr}}
.foot .brand{color:#fff;font-size:22px}
.foot-tag{color:#9AA0A4;margin-top:16px;max-width:34ch;font-size:14.5px}
.foot h5{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:#8A8F94;margin-bottom:14px}
.foot ul{list-style:none;display:grid;gap:10px}
.foot ul a{color:#C6C8CB;font-size:14.5px}
.foot ul a:hover{color:#fff}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:44px;padding-top:22px;
  border-top:1px solid #2A2E33;color:#8A8F94;font-size:12.5px;font-family:"IBM Plex Mono",monospace}

/* ---------- page header (interior pages) ---------- */
.phead{position:relative;padding:clamp(48px,7vw,92px) 0 clamp(30px,4vw,44px);overflow:hidden}
.phead .hero-grid{mask-image:radial-gradient(110% 90% at 88% 0%,#000,transparent 62%);
  -webkit-mask-image:radial-gradient(110% 90% at 88% 0%,#000,transparent 62%)}
.phead-in{position:relative;max-width:64ch}
.phead h1{font-size:clamp(34px,5.2vw,58px);letter-spacing:-.04em;margin:16px 0 0;line-height:1}
.phead .lead{margin-top:18px}

/* ---------- reveal motion ---------- */
@media (prefers-reduced-motion: no-preference){
  .reveal{opacity:0;transform:translateY(18px);
    transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:calc(var(--i,0)*70ms)}
  .reveal.in{opacity:1;transform:none}
  .draw{stroke-dasharray:var(--len,600);stroke-dashoffset:var(--len,600);animation:draw 1.6s var(--ease) .2s forwards}
  @keyframes draw{to{stroke-dashoffset:0}}
  .rise{animation:rise 1s var(--ease) 1.1s both}
  @keyframes rise{from{transform:translateY(26px);opacity:0}to{transform:none;opacity:1}}
  .pulse{animation:pulse 2.8s ease-in-out infinite}
  @keyframes pulse{0%,100%{opacity:1}50%{opacity:.55}}
}
@media (prefers-reduced-motion: reduce){
  .marq-track{animation:none}
  html{scroll-behavior:auto}
}

/* ---------- utility ---------- */
.center{text-align:center;margin-left:auto;margin-right:auto}
.mt-s{margin-top:14px}.mt-m{margin-top:28px}.mt-l{margin-top:44px}
.hide-mark{position:absolute;width:0;height:0;overflow:hidden}