:root {
  --bg: #F7F7F5; --surface: #FFFFFF; --text: #142033; --muted: #5E6878; --border: #E7E7E3;
  --navy: #142033; --navy-hover: #22324D; --bronze: #A98755; --bronze-text: #856637;
  --ok: #3F6B55; --ok-bg: #E6EFEA; --bad: #9C4A3C; --bad-bg: #F7E8E4; --focus: #2F5DA8;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 640px; }
.sr, .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(30px, 7.4vw, 50px); }
h2 { font-size: clamp(24px, 5vw, 34px); }
h3 { font-size: 18px; }
section { padding: 44px 0; }
.top .wrap { height: 52px; display: flex; align-items: center; }
.logo { font-weight: 700; letter-spacing: .22em; font-size: 15px; }

/* úvod – tmavý, jako aplikace v noci */
.top { background: #101A2B; border-bottom: 1px solid rgba(255,255,255,.08); }
.logo { color: #fff; }
.hero {
  padding: 24px 0 44px; color: #fff;
  background: radial-gradient(120% 90% at 85% 10%, #26385A 0%, #142033 55%, #0E1626 100%);
}
.hero .lead { color: #D8DEE8; }
.hero .fine { color: #AEB8C8; }
.hero .badge { background: rgba(201,169,120,.16); color: #E2C89C; border: 1px solid rgba(201,169,120,.35); }
.hero .signup input[type=email] { border-color: transparent; }
.hero .signup button { background: var(--bronze); color: #142033; }
.hero .signup button:hover { background: #BC9A68; }
.hero .msg.err { color: #FFD2C8; }
.hero h1 { letter-spacing: -.02em; }
.hero-grid { display: grid; gap: 28px; }
.badge {
  display: inline-block; margin: 0 0 14px; padding: 5px 12px; border-radius: 99px;
  background: #F6EEDF; color: #6F4A10; font-size: 14px; font-weight: 600;
}
.lead { font-size: 19px; margin: 0 0 18px; }
.signup { display: grid; gap: 10px; }
.signup input[type=email] {
  width: 100%; font: inherit; font-size: 18px; padding: 15px 16px; border-radius: 12px;
  border: 1.5px solid #80868F; background: var(--surface); color: var(--text);
}
.signup button {
  width: 100%; font: inherit; font-size: 19px; font-weight: 700; padding: 16px 20px; border: 0; border-radius: 12px;
  background: var(--navy); color: #fff; cursor: pointer; min-height: 56px;
}
.signup button:hover { background: var(--navy-hover); }
.signup button:disabled { opacity: .7; cursor: default; }
input:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.msg { margin: 0; min-height: 0; font-weight: 600; }
.msg.err { color: var(--bad); }
.done .msg { color: var(--ok); font-size: 18px; padding: 14px 16px; background: var(--ok-bg); border-radius: 12px; }
.fine { font-size: 14px; color: var(--muted); margin: 10px 0 0; }

/* ukázka aplikace */
.demo, .chat {
  position: relative; margin: 0; background: var(--surface); border: 1px solid var(--border); border-radius: 18px;
  padding: 20px 18px 16px; box-shadow: 0 10px 30px rgba(20, 32, 51, .07);
}
.demo { padding: 0; color: var(--text); box-shadow: 0 24px 60px rgba(0, 0, 0, .35); overflow: visible; }
.demo-bar {
  display: flex; align-items: center; gap: 6px; padding: 10px 14px; background: #EFEFEC;
  border-bottom: 1px solid var(--border); border-radius: 18px 18px 0 0;
}
.demo-bar i { width: 9px; height: 9px; border-radius: 50%; background: #CFCFCA; }
.demo-bar span { margin-left: 8px; font-size: 12.5px; color: var(--muted); background: #fff; border-radius: 99px; padding: 2px 12px; }
.demo-body { padding: 16px 18px 14px; }
.demo-tag {
  position: absolute; top: -11px; right: 16px; background: var(--bronze-text); color: #fff; font-size: 12px;
  font-weight: 700; letter-spacing: .06em; text-transform: uppercase; padding: 3px 10px; border-radius: 99px;
}
.demo-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; flex-wrap: wrap; font-size: 15px; }
.demo-head span { color: var(--muted); }
.bar { height: 8px; border-radius: 8px; background: var(--bad-bg); margin: 10px 0 12px; overflow: hidden; }
.bar span { display: block; height: 100%; background: var(--ok); border-radius: 8px; }
.rows { list-style: none; margin: 0; padding: 0; font-size: 15px; }
.rows li { display: flex; align-items: center; gap: 10px; padding: 8px 0; border-top: 1px solid var(--border); }
.rows li:first-child { border-top: 0; }
.grow { flex: 1; min-width: 0; }
.dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.dot.ok { background: var(--ok); } .dot.bad { background: var(--bad); }
.ok-t { color: var(--ok); font-size: 14px; }
.bad-t { color: var(--bad); font-size: 14px; font-weight: 600; text-align: right; }
.demo-sub { margin: 12px 0 2px; font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.soon li span:last-child { color: var(--bronze-text); font-size: 14px; white-space: nowrap; }

/* bolest */
.pain { background: var(--surface); border-block: 1px solid var(--border); }
.pairs { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.pairs li { border-left: 3px solid var(--bronze); padding: 2px 0 2px 14px; }
.pairs p { margin: 0; }
.pairs .p { color: var(--muted); }
.pairs .s { font-weight: 600; }

/* karty */
.cards { display: grid; gap: 12px; }
.cards article { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 16px 18px; }
.cards p { margin: 0; color: #2A3547; }
.also { margin: 16px 0 0; color: var(--muted); }

/* asistent */
.ai { background: var(--surface); border-block: 1px solid var(--border); }
.ai-grid { display: grid; gap: 28px; align-items: center; }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.checks li { padding-left: 28px; position: relative; }
.checks li::before { content: "✓"; position: absolute; left: 4px; color: var(--ok); font-weight: 700; }
.chat { background: var(--bg); }
.chat p { margin: 0; padding: 12px 14px; border-radius: 14px; max-width: 92%; font-size: 16px; }
.chat .q { margin-left: auto; background: var(--navy); color: #fff; border-bottom-right-radius: 4px; }
.chat .a { margin-top: 10px; background: var(--surface); border: 1px solid var(--border); border-bottom-left-radius: 4px; }

/* kroky */
.steps ol { margin: 0; padding: 0; list-style: none; counter-reset: s; display: grid; gap: 14px; }
.steps li { counter-increment: s; position: relative; padding-left: 50px; min-height: 36px; }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: -2px; width: 36px; height: 36px; border-radius: 50%;
  background: var(--navy); color: #fff; display: grid; place-items: center; font-weight: 700;
}

/* autor */
.author { padding-top: 12px; }
.author-row { display: flex; gap: 18px; align-items: center; }
.photo { width: 88px; height: 88px; border-radius: 50%; flex: none; }
.author blockquote { margin: 0; }
.author blockquote p { margin: 0 0 6px; font-size: 19px; font-style: italic; }
.author footer { font-weight: 700; color: var(--bronze-text); }
.author footer span { display: block; font-weight: 400; font-size: 15px; color: var(--muted); }

/* druhá výzva */
.cta2 { background: var(--navy); color: #fff; text-align: center; }
.cta2 p { color: #D8DEE8; }
.cta2 .signup button { background: var(--bronze); color: #142033; }
.cta2 .signup button:hover { background: #BC9A68; }
.cta2 .msg.err { color: #FFD2C8; }
.cta2.done .msg, .cta2 .done .msg { color: var(--ok); }

/* otázky */
details { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; margin: 0 0 10px; }
summary { cursor: pointer; padding: 15px 18px; font-weight: 600; list-style: none; position: relative; padding-right: 44px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 18px; top: 12px; font-size: 22px; color: var(--bronze-text); }
details[open] summary::after { content: "−"; }
details p { margin: 0; padding: 0 18px 16px; }

.foot { padding: 28px 0 40px; font-size: 14px; color: var(--muted); }
.foot p { margin: 0 0 6px; }

@media (min-width: 720px) {
  .cards { grid-template-columns: repeat(3, 1fr); }
  .cards.four { grid-template-columns: repeat(4, 1fr); }
  .pairs { grid-template-columns: 1fr 1fr; gap: 22px 32px; }
  .signup { grid-template-columns: 1fr auto; }
  .signup button { width: auto; }
  .signup .msg { grid-column: 1 / -1; }
  section { padding: 64px 0; }
}
@media (min-width: 960px) {
  .hero { padding: 48px 0 64px; }
  .hero-grid { grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
  .ai-grid { grid-template-columns: 1fr 1fr; gap: 56px; }
}