/* Layout: logo bar → thesis + "protocol" readout → services grid → about facts → enquiry form → footer */
:root{
  --bg:#F4F7F9; --surface:#FFFFFF; --fg:#0F2231; --muted:#56697A; --line:#D6E0E7;
  --accent:#0082B8; --accent-soft:#E2F3FB; --volt:#FFE100; --volt-ink:#2B2600; --ok:#1C7A4B;
  --f-display:"Unbounded","Golos Text",system-ui,sans-serif;
  --f-body:"Golos Text",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0C1821; --surface:#122330; --fg:#E3EDF3; --muted:#93A8B8; --line:#22394A;
  --accent:#3CC2FA; --accent-soft:#12324A; --volt:#FFE100; --volt-ink:#2B2600; --ok:#4FCB8B; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0C1821; --surface:#122330; --fg:#E3EDF3; --muted:#93A8B8; --line:#22394A;
  --accent:#3CC2FA; --accent-soft:#12324A; --volt:#FFE100; --volt-ink:#2B2600; --ok:#4FCB8B; color-scheme:dark}

*{box-sizing:border-box}
body{background:var(--bg);color:var(--fg);font:400 16px/1.6 var(--f-body)}
.wrap{max-width:1080px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
a{color:var(--accent)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}

/* header */
header{border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:14px}
.logo{height:64px;width:auto;display:block}
.top-actions{display:flex;align-items:center;gap:12px}
.lang{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.lang button{all:unset;cursor:pointer;font:600 13px/1 var(--f-mono);padding:8px 12px;color:var(--muted)}
.lang button[aria-pressed="true"]{background:var(--fg);color:var(--bg)}
.btn{display:inline-flex;align-items:center;gap:8px;font:600 15px/1 var(--f-body);text-decoration:none;
  background:var(--volt);color:var(--volt-ink);padding:13px 20px;border-radius:6px;border:0;cursor:pointer}
.btn:hover{filter:brightness(.95)}
.top-actions .btn{padding:10px 14px;font-size:14px}

/* hero */
.hero .wrap{display:grid;grid-template-columns:1.25fr 1fr;gap:40px;padding-block:56px 48px;align-items:center}
.hero .wrap>*{min-width:0}
.eyebrow{font:600 12px/1.4 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
h1{font:700 clamp(28px,4.4vw,46px)/1.12 var(--f-display);margin:12px 0 18px;text-wrap:balance;letter-spacing:-.01em}
h1 mark{background:linear-gradient(transparent 62%,var(--volt) 62%);color:inherit;padding:0 .05em}
.lead{font-size:18px;color:var(--muted);max-width:56ch;margin:0 0 28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center}
.hero-cta small{color:var(--muted);font-size:14px}

.lab{background:var(--fg);color:var(--bg);border-radius:12px;padding:28px 26px;display:flex;flex-direction:column;gap:18px}
.lab-eyebrow{color:var(--volt)}
.lab-title{font:700 clamp(20px,2.4vw,26px)/1.2 var(--f-display);text-wrap:balance;margin-top:-8px}
.lab-list{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.lab-list li{display:grid;gap:2px;padding-left:18px;border-left:3px solid var(--volt)}
.lab-list b{font:700 clamp(18px,2vw,22px)/1.2 var(--f-display)}
.lab-list span{opacity:.75;font-size:15px}

/* sections */
section{padding-block:56px}
section+section{border-top:1px solid var(--line)}
h2{font:700 clamp(22px,3vw,30px)/1.2 var(--f-display);margin:8px 0 28px;text-wrap:balance}
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.svc{background:var(--surface);padding:24px 22px;display:flex;flex-direction:column;gap:8px;min-width:0}
.svc svg{width:30px;height:30px;stroke:var(--accent);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.svc h3{font:600 17px/1.3 var(--f-body);margin:6px 0 0}
.svc p{margin:0;color:var(--muted);font-size:15px}

.about{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.about>*{min-width:0}
.about p{margin:0 0 14px;max-width:60ch}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.fact{border-left:3px solid var(--volt);padding:4px 0 4px 14px}
.fact b{display:block;font:700 26px/1.2 var(--f-display);font-variant-numeric:tabular-nums}
.fact span{color:var(--muted);font-size:14px}

/* form */
.contact{display:grid;grid-template-columns:1fr 1.4fr;gap:40px;align-items:start}
.contact>*{min-width:0}
.contact aside p{color:var(--muted);margin:0 0 18px;max-width:46ch}
.mailbox{display:flex;flex-wrap:wrap;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:12px 14px}
.mailbox code{font:600 15px/1.3 var(--f-mono);user-select:all;word-break:break-all}
.ghost{all:unset;cursor:pointer;font:600 13px/1 var(--f-body);color:var(--accent);border:1px solid var(--line);padding:8px 10px;border-radius:6px}
form{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:24px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field.full{grid-column:1/-1}
label{font-weight:500;font-size:14px}
label .req{color:var(--accent)}
input,select,textarea{font:400 16px/1.4 var(--f-body);color:var(--fg);background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:11px 12px;width:100%}
textarea{min-height:120px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:0;border-color:transparent}
.form-foot{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:12px 16px}
.form-foot small{color:var(--muted);font-size:13px;flex:1 1 220px}
.notice{grid-column:1/-1;border-radius:8px;padding:14px 16px;background:var(--accent-soft);font-size:14px}
.notice pre{white-space:pre-wrap;font:400 13px/1.5 var(--f-mono);margin:10px 0;background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:10px;max-height:220px;overflow:auto}
.hp{position:absolute;left:-9999px}

footer{border-top:1px solid var(--line);color:var(--muted);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;padding-block:24px}

/* nav + publications */
.nav{display:flex;gap:4px}
.nav a{font:500 14px/1 var(--f-body);color:var(--muted);text-decoration:none;padding:9px 10px;border-radius:6px}
.nav a:hover{color:var(--fg)}
.nav a[aria-current="page"]{color:var(--fg);background:var(--accent-soft)}
.posts-head .lead{margin-bottom:28px}
.post-list{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.post-card{display:grid;grid-template-columns:120px 1fr;gap:6px 24px;background:var(--surface);padding:22px;text-decoration:none;color:inherit}
.post-card:hover h3{color:var(--accent)}
.post-card time{font:400 13px/1.6 var(--f-mono);color:var(--muted);font-variant-numeric:tabular-nums}
.post-card>div{min-width:0}
.post-card h3{font:600 18px/1.35 var(--f-body);margin:0 0 6px;text-wrap:balance}
.post-card p{margin:0;color:var(--muted);font-size:15px}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.tags span{font:400 12px/1 var(--f-mono);color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:5px 9px}
.post{max-width:68ch}
.post .back{font:500 14px/1 var(--f-body);text-decoration:none;display:inline-block;margin-bottom:24px}
.post h1{font-size:clamp(24px,3.6vw,36px);margin:10px 0 12px}
.post .meta{font:400 13px/1.5 var(--f-mono);color:var(--muted);margin-bottom:28px}
.post h2{font-size:20px;margin:32px 0 10px}
.post p,.post li{font-size:17px;line-height:1.7}
.post ul{padding-left:22px}
.post .lang-note{background:var(--accent-soft);border-radius:8px;padding:10px 14px;font-size:14px;margin-bottom:24px}
.post-cta{margin-top:36px;padding:22px;border:1px solid var(--line);border-left:4px solid var(--volt);border-radius:8px;background:var(--surface);display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between}
.post-cta p{margin:0;font-size:16px;flex:1 1 260px}

@media (max-width:820px){
  .hero .wrap,.about,.contact{grid-template-columns:1fr}
  .services{grid-template-columns:1fr 1fr}
}
@media (max-width:520px){
  .services,form{grid-template-columns:1fr}
  .logo{height:48px}
  .top-actions .btn{display:none}
  header .wrap{flex-wrap:wrap}
  .post-card{grid-template-columns:1fr}
  .hero .wrap{padding-block:36px}
  section{padding-block:44px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

.lang-note:empty{display:none}