/* ATOM brand, deep-blue dark variant: tokens and components taken from the Hallmark showcase page */
:root{
  --bg-0:#01080A;          /* Rich Black-Blue */
  --bg-1:#032A33;          /* Tiber Blue */
  --bg-2:#043540;          /* Deep Blue */
  --surf:rgba(4,53,64,.38); --surf-2:rgba(4,53,64,.62);
  --line:rgba(111,217,238,.10); --line-2:rgba(111,217,238,.18);
  --tx-1:#EDF5F7;          /* Journal Blue */
  --tx-2:#B4C6CA; --tx-3:#8DA1A5; --tx-4:#5F7579;
  --accent:#3FC2E0;        /* Accent Blue */
  --accent-2:#6FD9EE;
  --f-disp:'Archivo','Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  --f-ui:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --f-mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  color-scheme:dark;
}
/* a brand piece: dark only, in every theme the viewer has */
:root:not([data-theme="light"]), :root[data-theme="dark"]{color-scheme:dark}
@media (prefers-color-scheme: light){:root:not([data-theme="light"]){color-scheme:dark}}
*{box-sizing:border-box}
html{background:var(--bg-0)}
body{margin:0;background:var(--bg-0);color:var(--tx-1);font:15px/1.5 var(--f-ui);-webkit-font-smoothing:antialiased;overflow-x:hidden}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.wrap{max-width:1240px;margin:0 auto;padding:0 32px}

/* atmosphere: teal glow behind the leaderboard + brand-book "curtains" */
.atmos{position:absolute;inset:0 0 auto 0;height:980px;pointer-events:none;overflow:hidden;z-index:0}
.atmos::before{content:"";position:absolute;left:50%;top:-340px;width:1500px;height:1100px;transform:translateX(-50%);
  background:radial-gradient(closest-side,rgba(31,164,196,.30),rgba(4,53,64,.35) 45%,rgba(1,8,10,0) 75%)}
.atmos::after{content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(90deg,rgba(111,217,238,.045) 0 1px,transparent 1px 26px);
  -webkit-mask-image:linear-gradient(180deg,#000 0,rgba(0,0,0,.5) 35%,transparent 70%);mask-image:linear-gradient(180deg,#000 0,rgba(0,0,0,.5) 35%,transparent 70%)}
main,header,footer{position:relative;z-index:1}

/* top bar */
.bar{display:flex;align-items:center;gap:22px;height:64px;border-bottom:1px solid var(--line)}
.logo{display:flex;align-items:center;color:var(--tx-1)}
.logo svg{height:22px;width:auto;display:block}
.logo svg path{fill:var(--tx-1)}
.logo svg path:first-of-type{fill:var(--accent)}
.brand{display:flex;flex-direction:column;line-height:1.15;padding-left:22px;border-left:1px solid var(--line-2)}
.brand b{font-family:var(--f-disp);font-variation-settings:'wdth' 118;font-weight:600;letter-spacing:.16em;font-size:14px}
.brand small{color:var(--tx-3);font-size:12px}
.grow{flex:1}
.seg{display:flex;border:1px solid var(--line-2);border-radius:8px;overflow:hidden}
.seg button{padding:5px 11px;font-size:12.5px;color:var(--tx-3)}
.seg button[aria-pressed="true"]{background:var(--surf-2);color:var(--accent-2)}
.btn{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;border-radius:8px;border:1px solid var(--line-2);font-size:12.5px;color:var(--tx-2)}
.btn:hover{color:var(--tx-1);border-color:var(--accent)}

/* headings */
.kicker{font-family:var(--f-disp);font-variation-settings:'wdth' 118;letter-spacing:.22em;font-size:12px;color:var(--accent);text-transform:uppercase;margin:0 0 8px}
h1{font-family:var(--f-disp);font-variation-settings:'wdth' 108;font-weight:500;font-size:44px;line-height:1.05;letter-spacing:-.015em;margin:0;text-wrap:balance}
.lead{color:var(--tx-2);font-size:15.5px;max-width:720px;margin:10px 0 0}

/* cards */
.card{background:var(--surf);border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.card h3{margin:0;font-size:15.5px;font-weight:600;display:flex;align-items:center;gap:10px}
.card .tag{font-family:var(--f-disp);font-variation-settings:'wdth' 118;font-size:11px;letter-spacing:.14em;color:var(--accent);border:1px solid rgba(63,194,224,.35);border-radius:5px;padding:1px 6px}
.card .desc{color:var(--tx-3);font-size:13px;margin:6px 0 14px;min-height:38px}

footer{margin:88px 0 0;border-top:1px solid var(--line);padding:22px 0 40px;display:flex;justify-content:flex-end;gap:16px;color:var(--tx-4);font-size:12.5px;flex-wrap:wrap}

/* bilingual text: every string is rendered in both languages, <html lang> picks one */
[data-l]{display:none}
:root[lang="en"] [data-l="en"],:root[lang="ru"] [data-l="ru"]{display:inline}

/* index: benchmark list */
.hero{margin:56px 0 28px}
.benches{list-style:none;margin:0;padding:0;display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.bench{position:relative;display:flex;flex-direction:column;padding:22px 22px 20px;transition:border-color .15s,background .15s}
.bench h3{font-family:var(--f-disp);font-variation-settings:'wdth' 118;letter-spacing:.12em;text-transform:uppercase;font-size:17px;font-weight:600}
.bench .desc{flex:1;font-size:14px;color:var(--tx-2)}
.bench .go{align-self:flex-start;text-decoration:none}
.bench .go::after{content:"";position:absolute;inset:0;border-radius:14px}  /* whole card clickable */
.bench:not(.soon):hover{border-color:var(--accent);background:var(--surf-2)}
.bench:not(.soon):hover .go{color:var(--tx-1);border-color:var(--accent)}
.bench.soon{opacity:.6}
.bench.soon .tag{align-self:flex-start}
a.logo{text-decoration:none}
footer.wrap{justify-content:space-between;margin-top:72px;padding-top:22px;padding-bottom:40px}  /* .wrap would override footer's spacing */
footer a{color:var(--tx-3);text-decoration:none}
footer a:hover{color:var(--accent-2)}

@media (max-width: 900px){
  h1{font-size:34px}
}
@media (max-width: 640px){
  .wrap{padding:0 16px}
  .brand small{display:none}
  .bar{gap:12px}
  .logo svg{height:18px}
  .brand{padding-left:14px}
  .brand b{letter-spacing:.1em;font-size:13px}
  .bar .seg{flex:none}
  .hero{margin:40px 0 24px}
}