:root{
  --bg:#FAFAF9;
  --surface:#FFFFFF;
  --band:#F2F2F0;
  --line:rgba(24,24,30,0.10);
  --line-strong:rgba(24,24,30,0.18);
  --text:#18181C;
  --text-2:#55555E;
  --text-3:#76767F;
  --accent:#5646D2;
  --accent-hover:#4636BF;
  --accent-text:#FFFFFF;
  --accent-soft:rgba(86,70,210,0.08);
  --radius:10px;
  --f:'Geist',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#111113;
    --surface:#18181B;
    --band:#161618;
    --line:rgba(255,255,255,0.08);
    --line-strong:rgba(255,255,255,0.16);
    --text:#EDEDEF;
    --text-2:#A9A9B2;
    --text-3:#8A8A94;
    --accent:#8C80F0;
    --accent-hover:#9F95F4;
    --accent-text:#141218;
    --accent-soft:rgba(140,128,240,0.10);
  }
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto;}}
body{background:var(--bg);color:var(--text);font-family:var(--f);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased;-webkit-text-size-adjust:100%;text-size-adjust:100%;}
a{color:inherit;}
/* Pozor: sekce s .wrap smí nastavovat jen padding-block, jinak přepíšou boční odsazení */
.wrap{max-width:1120px;margin:0 auto;padding-inline:24px;}
@media (max-width:600px){.wrap{padding-inline:20px;}}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:var(--radius);font:600 15px/1 var(--f);text-decoration:none;cursor:pointer;border:1px solid transparent;white-space:nowrap;transition:background .15s,border-color .15s,transform .1s;}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--accent);color:var(--accent-text);}
.btn-primary:hover{background:var(--accent-hover);}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--text-3);}
.btn-sm{height:36px;padding:0 14px;font-size:14px;}
.btn:focus-visible,.faq summary:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

/* Nav */
.nav{height:64px;display:flex;align-items:center;justify-content:space-between;}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:16px;text-decoration:none;}
.brand img{border-radius:7px;display:block;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links > a:not(.btn){font-size:14px;color:var(--text-2);text-decoration:none;}
.nav-links > a:not(.btn):hover{color:var(--text);}
@media (max-width:720px){.nav-links > a:not(.btn){display:none;}}

/* Hero */
.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;padding-block:56px 88px;}
.kicker{font-size:14px;font-weight:500;color:var(--accent);margin-bottom:16px;}
.hero h1{font-size:clamp(30px,4.4vw,48px);line-height:1.1;letter-spacing:-0.035em;font-weight:700;margin-bottom:20px;}
.hero-sub{font-size:18px;color:var(--text-2);max-width:30em;margin-bottom:32px;}
.hero-ctas{display:flex;gap:12px;flex-wrap:wrap;}
.demo-frame{width:100%;height:480px;border:0;display:block;background:transparent;}
@media (max-width:900px){
  .hero{grid-template-columns:1fr;gap:32px;padding-block:24px 56px;}
  .demo-frame{max-width:460px;margin:0 auto;}
}

/* Use cases */
.section{padding-block:88px;}
.section-tight{padding-block:72px;}
@media (max-width:600px){.section{padding-block:64px;}.section-tight{padding-block:56px;}}
h2{font-size:clamp(28px,3.4vw,36px);line-height:1.15;letter-spacing:-0.025em;font-weight:700;}
.lead{font-size:17px;color:var(--text-2);margin-top:12px;max-width:34em;}
.cases{display:grid;grid-template-columns:1fr 1.4fr;gap:56px;align-items:start;border-top:1px solid var(--line);padding-top:48px;}
.case{padding:24px 0;border-bottom:1px solid var(--line);}
.case:first-child{padding-top:0;}
.case:last-child{border-bottom:0;}
.case h3{font-size:18px;font-weight:600;letter-spacing:-0.01em;margin-bottom:6px;}
.case p{color:var(--text-2);max-width:36em;}
@media (max-width:900px){.cases{grid-template-columns:1fr;gap:32px;}}

/* How it works */
.band{background:var(--band);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.statement{font-size:clamp(24px,3vw,32px);line-height:1.3;letter-spacing:-0.02em;font-weight:600;max-width:24em;}
.statement span{color:var(--text-3);}
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-top:48px;}
.fact{border-top:2px solid var(--text);padding-top:16px;}
.fact h3{font-size:15px;font-weight:600;margin-bottom:6px;}
.fact p{font-size:14px;color:var(--text-2);}
@media (max-width:900px){.facts{grid-template-columns:repeat(2,1fr);}}
@media (max-width:520px){.facts{grid-template-columns:1fr;gap:24px;}}

/* Pricing */
.pricing-head{text-align:center;margin-bottom:48px;}
.pricing-head .lead{margin-left:auto;margin-right:auto;}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:980px;margin:0 auto;}
.plan{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:28px;display:flex;flex-direction:column;}
.plan.featured{border:1.5px solid var(--accent);}
.plan-name{font-size:15px;font-weight:600;display:flex;justify-content:space-between;align-items:baseline;gap:8px;}
.plan-save{font-size:13px;font-weight:500;color:var(--accent);}
.plan-price{font-size:40px;font-weight:700;letter-spacing:-0.03em;margin:14px 0 2px;}
.plan-price small{font-size:15px;font-weight:400;color:var(--text-3);letter-spacing:0;}
.plan-desc{font-size:14px;color:var(--text-3);min-height:22px;}
.plan ul{list-style:none;margin:24px 0 28px;display:grid;gap:10px;flex:1;}
.plan li{font-size:15px;color:var(--text-2);padding-left:24px;position:relative;}
.plan li::before{content:"";position:absolute;left:3px;top:6px;width:10px;height:5px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg);}
.plan .btn{width:100%;}
.pricing-note{text-align:center;font-size:14px;color:var(--text-3);margin-top:28px;}
.upgrade-hint{display:none;max-width:640px;margin:20px auto 0;padding:14px 18px;border-radius:var(--radius);background:var(--accent-soft);border:1px solid var(--line);font-size:15px;color:var(--text);text-align:center;}
.upgrade-hint.show{display:block;}
.upgrade-hint a{color:var(--accent);font-weight:600;}
@media (max-width:900px){.plans{grid-template-columns:1fr;max-width:440px;}}

/* Author */
.author{display:grid;grid-template-columns:auto 1fr;gap:32px;align-items:center;max-width:820px;margin:0 auto;}
.author-photo{width:136px;height:136px;border-radius:50%;overflow:hidden;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;font-size:40px;font-weight:600;color:var(--accent);}
.author-photo img{width:100%;height:100%;object-fit:cover;display:block;}
.author blockquote{font-size:clamp(19px,2.2vw,22px);line-height:1.45;letter-spacing:-0.01em;font-weight:500;}
.author-meta{margin-top:14px;font-size:15px;color:var(--text-2);}
.author-meta strong{color:var(--text);font-weight:600;}
.author-meta a{color:var(--accent);text-decoration:none;}
.author-meta a:hover{text-decoration:underline;}
@media (max-width:620px){.author{grid-template-columns:1fr;gap:20px;}.author-photo{width:96px;height:96px;font-size:30px;}}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:1fr 1.6fr;gap:56px;align-items:start;}
.faq details{border-bottom:1px solid var(--line);}
.faq details:first-child{border-top:1px solid var(--line);}
.faq summary{list-style:none;cursor:pointer;padding:20px 32px 20px 0;font-size:17px;font-weight:500;position:relative;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"";position:absolute;right:6px;top:27px;width:8px;height:8px;border-right:1.5px solid var(--text-3);border-bottom:1.5px solid var(--text-3);transform:rotate(45deg);transition:transform .2s;}
.faq details[open] summary::after{transform:rotate(-135deg);top:31px;}
.faq details p{padding:0 32px 22px 0;color:var(--text-2);max-width:40em;}
.faq details p a{color:var(--accent);}
@media (max-width:900px){.faq-grid{grid-template-columns:1fr;gap:24px;}}

/* Roadmap */
.roadmap{display:grid;grid-template-columns:1fr 1fr 1fr;gap:40px;}
.roadmap h3{font-size:15px;font-weight:600;margin-bottom:12px;}
.roadmap ul{list-style:none;display:grid;gap:8px;}
.roadmap li{font-size:15px;color:var(--text-2);}
.roadmap p{color:var(--text-2);font-size:15px;}
.roadmap p a{color:var(--accent);font-weight:500;text-decoration:none;}
@media (max-width:900px){.roadmap{grid-template-columns:1fr;gap:28px;}}

/* Final CTA + footer */
.closing{text-align:center;}
.closing .lead{margin:12px auto 28px;}
.footer{border-top:1px solid var(--line);padding:32px 0 40px;}
.footer-row{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.footer-links{display:flex;gap:24px;flex-wrap:wrap;}
.footer-links a{font-size:14px;color:var(--text-2);text-decoration:none;}
.footer-links a:hover{color:var(--text);}
.footer-copy{font-size:13px;color:var(--text-3);margin-top:20px;}
/* Mobile */
@media (max-width:600px){
  .btn-sm{height:40px;}
  .hero-ctas .btn{flex:1 1 0;min-width:0;}
  .hero-sub{font-size:17px;margin-bottom:28px;}
  .plan{padding:24px;}
  .plan-price{font-size:36px;}
  .faq summary{font-size:16px;}
  .footer-links{gap:4px 20px;}
  .footer-links a{display:inline-block;padding-block:11px;}
  .brand{min-height:44px;}
}

/* Language switcher (shared with pages.css) */
.lang{position:relative;}
.lang summary{list-style:none;display:flex;align-items:center;gap:7px;height:36px;padding:0 8px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:500;color:var(--text-2);user-select:none;}
.lang summary::-webkit-details-marker{display:none;}
.lang summary:hover{color:var(--text);background:var(--accent-soft);}
.lang summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.flag{width:20px;height:14px;border-radius:2px;object-fit:cover;display:block;box-shadow:0 0 0 1px var(--line);}
.lang ul{position:absolute;right:0;top:calc(100% + 6px);list-style:none;margin:0;padding:6px;min-width:170px;background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 32px rgba(20,20,40,.14);z-index:20;}
.lang li a{display:flex;align-items:center;gap:10px;padding:10px;border-radius:6px;font-size:14px;color:var(--text);text-decoration:none;}
.lang li a:hover{background:var(--accent-soft);text-decoration:none;}
.lang li a[aria-current="true"]{font-weight:600;}
@media (max-width:600px){.lang summary{height:40px;}}

/* Small phones: brand + language + hero CTA are enough in the header */
@media (max-width:420px){.nav-links > .btn{display:none;}.nav-links{gap:8px;}}