:root{
    --ink:#141d26;
    --ink-2:#212b36;
    --muted:#5d6c7b;
    --muted-2:#8a97a4;
    --line:#e6ebf1;
    --bg:#ffffff;
    --panel:#f5f8ff;
    --panel-2:#eef3fb;
    --navy:#0a1a3a;
    --navy-2:#0d2350;
    --blue:#0b73ff;
    --blue-ink:#1a237e;
    --sky:#42a5f5;
    --orange:#f57c00;
    --grad:linear-gradient(100deg,#f57c00 0%,#1a237e 52%,#42a5f5 100%);
    --radius:16px;
    --radius-lg:24px;
    --shadow-sm:0 1px 2px rgba(20,29,38,.06),0 2px 8px rgba(20,29,38,.05);
    --shadow:0 10px 30px rgba(20,29,38,.08),0 2px 8px rgba(20,29,38,.04);
    --shadow-lg:0 30px 70px rgba(10,26,58,.16);
    --maxw:1140px;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"DM Sans",system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
    color:var(--ink);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
    line-height:1.55;
    font-size:17px;
  }
  a{color:inherit;text-decoration:none}
  img,svg{display:block}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;letter-spacing:.02em;
    color:var(--blue-ink);
    background:var(--panel-2);
    border:1px solid #dbe6fb;
    padding:7px 14px;border-radius:999px;
  }
  .eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--grad)}
  h1,h2,h3{margin:0;letter-spacing:-.02em;line-height:1.08;font-weight:700;color:var(--ink)}
  h1{font-size:clamp(38px,5.4vw,62px)}
  h2{font-size:clamp(30px,3.8vw,44px);line-height:1.12}
  h3{font-size:20px;line-height:1.25}
  p{margin:0}
  .lead{font-size:clamp(18px,1.5vw,21px);color:var(--muted);line-height:1.6}
  .grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

  /* buttons */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:9px;
    font-family:inherit;font-size:16px;font-weight:600;cursor:pointer;
    padding:14px 24px;border-radius:12px;border:1px solid transparent;
    transition:transform .15s ease,box-shadow .15s ease,background .15s ease,border-color .15s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--ink);color:#fff;box-shadow:var(--shadow-sm)}
  .btn-primary:hover{transform:translateY(-1px);box-shadow:0 14px 30px rgba(20,29,38,.22)}
  .btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
  .btn-ghost:hover{border-color:#c7d2df;transform:translateY(-1px)}
  .btn-light{background:#fff;color:var(--ink)}
  .btn-light:hover{transform:translateY(-1px);box-shadow:0 14px 30px rgba(0,0,0,.25)}
  .btn-arrow svg{transition:transform .15s ease}
  .btn:hover .btn-arrow svg{transform:translateX(3px)}

  /* logo */
  .brand{display:inline-flex;align-items:center;gap:11px}
  .brand .mark{width:30px;height:30px}
  .brand .wordmark{font-size:22px;font-weight:700;letter-spacing:-.02em;color:var(--ink-2)}
  .brand.on-dark .wordmark{color:#fff}

  /* nav */
  header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:blur(12px);border-bottom:1px solid rgba(230,235,241,.9)}
  .nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
  .nav-links{display:flex;align-items:center;gap:32px}
  .nav-links a{font-size:15px;font-weight:500;color:var(--muted);transition:color .15s ease}
  .nav-links a:hover{color:var(--ink)}
  .nav-cta{display:flex;align-items:center;gap:14px}
  .lang{display:flex;align-items:center;gap:2px;font-size:13px;font-weight:600;letter-spacing:.04em}
  .lang a,.lang span{display:inline-grid;place-items:center;min-width:34px;height:34px;padding:0 6px;border-radius:8px}
  .lang span{color:var(--ink)}
  .lang a{color:var(--muted);transition:color .15s ease,background .15s ease}
  .lang a:hover{color:var(--ink);background:rgba(20,29,38,.05)}

  /* hero */
  .hero{position:relative;overflow:hidden;padding:64px 0 40px}
  .hero:before{content:"";position:absolute;inset:0;background:
    radial-gradient(1100px 520px at 82% -6%,rgba(66,165,245,.16),transparent 60%),
    radial-gradient(900px 480px at 6% 8%,rgba(245,124,0,.09),transparent 55%);
    pointer-events:none}
  .hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
  .hero h1{margin:22px 0 0}
  .hero .lead{margin-top:22px;max-width:36ch}
  .hero-cta{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
  .hero-note{margin-top:18px;font-size:14px;color:var(--muted-2);display:flex;align-items:center;gap:8px}
  .hero-note svg{flex:none}

  /* hero flow diagram */
  .flow{
    position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
    box-shadow:var(--shadow-lg);padding:22px 22px 18px;
  }
  .flow-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
  .flow-title{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.03em;text-transform:uppercase}
  .flow-badge{font-size:12px;font-weight:600;color:#0a7d3d;background:#e7f7ee;border:1px solid #c7ecd6;padding:4px 10px;border-radius:999px}
  .lane{display:grid;grid-template-columns:110px 1fr;align-items:center;gap:12px;padding:12px 0;border-top:1px dashed var(--line)}
  .lane:first-of-type{border-top:none}
  .lane-label{display:flex;align-items:center;gap:9px;font-size:13.5px;font-weight:600;color:var(--ink-2)}
  .lane-ic{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;color:#fff;flex:none}
  .lane-track{position:relative;height:34px;border-radius:10px;background:linear-gradient(90deg,#f6f8fc,#eef3fb);overflow:hidden}
  .chip{
    position:absolute;top:5px;height:24px;display:flex;align-items:center;gap:6px;
    padding:0 10px;border-radius:7px;background:#fff;border:1px solid #dfe7f2;
    font-size:11.5px;font-weight:600;color:var(--ink-2);box-shadow:0 2px 6px rgba(20,29,38,.07);
    white-space:nowrap;
  }
  .chip i{width:7px;height:7px;border-radius:50%;display:block}
  .chip.move{animation:slide 8s ease-in-out infinite}
  .chip.move2{animation:slide2 8s ease-in-out infinite}
  .chip.move3{animation:slide3 8s ease-in-out infinite}
  /* konec dráhy podle skutečné šířky štítku (český text je delší) */
  @keyframes slide{0%{left:4px;transform:none}42%,100%{left:100%;transform:translateX(calc(-100% - 4px))}50%,52%{opacity:1}58%,100%{opacity:0}}
  @keyframes slide2{0%,18%{left:4px;transform:none;opacity:0}20%{opacity:1}62%,100%{left:100%;transform:translateX(calc(-100% - 4px))}62%{opacity:1}70%,100%{opacity:0}}
  @keyframes slide3{0%,40%{left:4px;transform:none;opacity:0}44%{opacity:1}86%,100%{left:100%;transform:translateX(calc(-100% - 4px))}86%{opacity:1}94%,100%{opacity:0}}
  .flow-foot{display:flex;align-items:center;gap:8px;margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted)}
  @media (prefers-reduced-motion:reduce){.chip{animation:none!important}}

  /* generic section */
  section{padding:84px 0}
  .section-head{max-width:720px;margin:0 auto 52px;text-align:center}
  .section-head .eyebrow{margin-bottom:18px}
  .section-head p{margin-top:18px;color:var(--muted);font-size:18px}

  /* trust strip */
  .trust{padding:26px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--panel)}
  .trust-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px;align-items:center}
  .trust-lead{font-size:15px;font-weight:500;color:var(--ink-2);line-height:1.45}
  .trust-lead b{font-weight:700}
  .stat .num{font-size:30px;font-weight:700;letter-spacing:-.02em;color:var(--ink);line-height:1}
  .stat .num b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
  .stat .lbl{font-size:13.5px;color:var(--muted);margin-top:6px}

  /* problem */
  .prob{background:var(--panel)}
  .prob-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:8px}
  .prob-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
  .prob-card .n{font-size:13px;font-weight:700;color:var(--orange)}
  .prob-card h3{margin:12px 0 8px;font-size:18px}
  .prob-card p{color:var(--muted);font-size:15.5px}

  /* how / features */
  .feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;
    box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#dbe6fb}
  .card .ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;color:#fff;background:var(--grad);margin-bottom:18px}
  .card .kicker{font-size:12.5px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--blue-ink)}
  .card h3{margin:8px 0 10px;font-size:20px}
  .card p{color:var(--muted);font-size:15.5px}
  .subrow{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:22px}
  .card.wide{display:grid;grid-template-columns:52px 1fr;gap:18px;align-items:start}
  .card.wide .ic{margin:0}

  /* why (dark) */
  .why{background:radial-gradient(1000px 600px at 85% -10%,rgba(66,165,245,.22),transparent 55%),radial-gradient(700px 500px at 0% 110%,rgba(245,124,0,.14),transparent 50%),var(--navy);color:#eaf0fb}
  .why h2{color:#fff}
  .why .section-head p{color:#aebbd3}
  .why-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
  .why-item{display:grid;grid-template-columns:44px 1fr;gap:16px;padding:24px;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);background:rgba(255,255,255,.04)}
  .why-item .ic{width:44px;height:44px;border-radius:11px;display:grid;place-items:center;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);color:#8fd0ff;flex:none}
  .why-item h3{color:#fff;font-size:18px;margin-bottom:6px}
  .why-item p{color:#aebbd3;font-size:15px}

  /* use cases */
  .uc-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
  .uc{position:relative;overflow:hidden;border-radius:var(--radius-lg);border:1px solid var(--line);padding:34px;background:#fff;box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease}
  .uc:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
  .uc:after{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--grad)}
  .uc .tag{font-size:12.5px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--blue-ink)}
  .uc h3{font-size:23px;margin:12px 0 12px}
  .uc p{color:var(--muted);font-size:16px}
  .uc .link{display:inline-flex;align-items:center;gap:8px;margin-top:20px;font-weight:600;color:var(--blue)}
  .uc .link svg{transition:transform .15s ease}
  .uc:hover .link svg{transform:translateX(3px)}

  /* provenance */
  .prov{background:var(--panel)}
  .prov-card{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:44px;box-shadow:var(--shadow)}
  .prov-card h2{font-size:clamp(26px,3vw,34px)}
  .prov-card p{color:var(--muted);margin-top:16px;font-size:16px}
  .prov-quote{font-size:14.5px;color:var(--muted);border-left:3px solid #dbe6fb;padding-left:16px;margin-top:20px;line-height:1.6}
  .prov-badges{display:flex;flex-direction:column;gap:14px}
  .prov-badge{display:flex;gap:14px;align-items:flex-start;padding:16px 18px;border:1px solid var(--line);border-radius:14px;background:var(--panel)}
  .prov-badge .flag{width:38px;height:26px;border-radius:5px;flex:none;overflow:hidden;box-shadow:0 1px 3px rgba(0,0,0,.12)}
  .prov-badge .t{font-size:13.5px;font-weight:600;color:var(--ink-2);line-height:1.3}
  .prov-badge .s{font-size:12.5px;color:var(--muted);margin-top:3px}

  /* final cta */
  .cta{background:var(--navy);color:#fff;text-align:center}
  .cta-inner{max-width:720px;margin:0 auto;position:relative}
  .cta h2{color:#fff}
  .cta p{color:#b3c1da;margin-top:16px;font-size:18px}
  .cta .hero-cta{justify-content:center;margin-top:30px}

  /* footer */
  footer{background:#0a1420;color:#9fb0c3;padding:60px 0 34px;font-size:14.5px}
  .foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
  .foot-top p{color:#8497ab;margin-top:16px;max-width:34ch;font-size:14.5px}
  .foot-col h4{color:#fff;font-size:13px;letter-spacing:.05em;text-transform:uppercase;margin:0 0 14px;font-weight:600}
  .foot-col a,.foot-col div{display:block;color:#9fb0c3;margin-bottom:10px}
  .foot-col a:hover{color:#fff}
  .foot-col .role{color:#6f8299;font-size:12.5px;margin-top:-6px}
  .foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;color:#6f8299;font-size:13px}
  .foot-fund{margin-top:20px;font-size:11.5px;color:#607287;line-height:1.55}

  @media (max-width:900px){
    .hero-grid{grid-template-columns:1fr;gap:36px}
    .trust-grid{grid-template-columns:1fr 1fr;gap:22px}
    .trust-lead{grid-column:1 / -1}
    .prob-grid,.feat-grid,.why-grid,.uc-grid,.subrow{grid-template-columns:1fr}
    .prov-card{grid-template-columns:1fr;padding:30px}
    .foot-top{grid-template-columns:1fr 1fr}
    .nav-links{display:none}
  }
  @media (max-width:560px){
    body{font-size:16px}
    section{padding:60px 0}
    .foot-top{grid-template-columns:1fr}
  }

/* ============ use-case pages ============ */
.uc-hero{position:relative;overflow:hidden;padding:72px 0 64px}
.uc-hero:before{content:"";position:absolute;inset:0;background:
  radial-gradient(1100px 520px at 82% -6%,rgba(66,165,245,.16),transparent 60%),
  radial-gradient(900px 480px at 6% 8%,rgba(245,124,0,.09),transparent 55%);
  pointer-events:none}
.uc-hero .wrap{position:relative}
.crumb{font-size:14px;color:var(--muted-2);margin-bottom:20px;display:flex;gap:8px;align-items:center}
.crumb a{color:var(--muted);font-weight:500}
.crumb a:hover{color:var(--ink)}
.uc-hero h1{font-size:clamp(34px,4.6vw,54px);max-width:22ch}
.uc-hero .lead{margin-top:22px;max-width:62ch}

.quote-strip{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:46px 0}
.quote{display:grid;grid-template-columns:56px 1fr;gap:18px;max-width:880px;margin:0 auto}
.qmark{font-size:64px;line-height:.9;font-weight:700;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.quote blockquote{margin:0;font-size:19px;font-weight:500;color:var(--ink-2);line-height:1.55}
.quote .who{margin-top:14px;font-size:14.5px;color:var(--muted)}
.quote .who b{color:var(--ink)}
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;max-width:880px;margin:34px auto 0;padding-top:30px;border-top:1px dashed #dbe3ee}

.sols{max-width:860px;margin:0 auto}
.sol{display:grid;grid-template-columns:72px 1fr;gap:26px;padding:38px 0;border-top:1px solid var(--line)}
.sol:first-of-type{border-top:none;padding-top:0}
.sol .n{font-size:44px;font-weight:700;letter-spacing:-.03em;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sol .kicker{font-size:12.5px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--blue-ink)}
.sol h3{font-size:23px;margin:6px 0 10px}
.sol p{color:var(--muted);font-size:16px}
.checks{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:11px}
.checks li{display:flex;gap:11px;font-size:15.5px;color:var(--muted);line-height:1.5}
.checks li svg{flex:none;margin-top:3px}

.unlock-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.unlock{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
.unlock .k{font-size:13px;font-weight:700;color:var(--orange)}
.unlock h3{font-size:19px;margin:10px 0 8px}
.unlock p{color:var(--muted);font-size:15px}

.next-uc{margin-top:30px;display:flex;justify-content:center}

@media (max-width:900px){
  .quote{grid-template-columns:1fr}
  .qmark{display:none}
  .stats-row{grid-template-columns:1fr 1fr}
  .sol{grid-template-columns:1fr;gap:10px}
  .unlock-grid{grid-template-columns:1fr}
}

/* přepínač jazyka: na telefonu schovat tlačítko v liště (stejné je hned v úvodu), dotykové cíle 44 px */
@media (max-width:480px){
  .nav-cta .btn{display:none}
}
@media (pointer:coarse){
  .lang a,.lang span{min-width:44px;height:44px}
}