/* Dispose – designový systém
   Identita vychází z loga: modrá #004aad, černá a ostrý trojúhelník.
   Žádná zaoblení, diagonální řezy sekcí, trojúhelník jako opakující se značka. */

:root {
  --blue: #004aad;
  --blue-700: #003a88;
  --blue-300: #6f9cff;
  --ink: #0b0f17;
  --ink-2: #151b27;
  --paper: #f2f4f7;
  --white: #fff;
  --text: #1a2130;
  --muted: #5a6475;
  --line: #d9dee6;
  --line-dark: #2a3242;

  --f-head: "Sora", system-ui, sans-serif;
  --f-body: "Source Sans 3", system-ui, sans-serif;

  --wrap: 1180px;
  --gut: clamp(16px, 4vw, 40px);
  --sec: clamp(64px, 9vw, 120px);
  --cut: clamp(28px, 5vw, 72px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 400 1.125rem/1.6 var(--f-body);
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-underline-offset: 3px; }
a:hover { color: var(--blue-700); }
h1, h2, h3 { font-family: var(--f-head); line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.02em; }
h1 { font-size: clamp(2.3rem, 6vw, 4.6rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 700; max-width: 22ch; }
h3 { font-size: 1.25rem; font-weight: 600; }
p { margin: 0 0 1em; }
sup { font-size: .65em; line-height: 0; }
sup a { text-decoration: none; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gut); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 14px; z-index: 100; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--blue-300); outline-offset: 2px; }

/* Trojúhelníková značka */
.tri, .eyebrow::before {
  display: inline-block;
  width: .9em; height: .78em;
  background: var(--blue);
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}
.eyebrow {
  display: flex; align-items: center; gap: .6em;
  font: 600 .85rem/1 var(--f-head);
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 1.2rem;
}
.eyebrow::before { content: ""; }

/* Tlačítka */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  font: 600 1rem/1 var(--f-head);
  padding: 1em 1.5em;
  background: var(--blue); color: #fff;
  text-decoration: none; border: 2px solid var(--blue);
  cursor: pointer; transition: background .15s, color .15s, border-color .15s;
}
.btn:hover { background: var(--blue-700); border-color: var(--blue-700); color: #fff; }
.btn--sm { padding: .75em 1.1em; font-size: .9rem; }
.btn--ghost { background: transparent; border-color: rgba(255,255,255,.5); }
.btn--ghost:hover { background: #fff; border-color: #fff; color: var(--ink); }
.btn--dark { background: var(--ink); border-color: var(--ink); }
.btn--dark:hover { background: #000; border-color: #000; }
.btn[disabled] { opacity: .6; cursor: progress; }

/* Záhlaví */
.top {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.top__in { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.top__logo img { height: 46px; width: auto; }
.top__nav { display: flex; align-items: center; gap: 28px; }
.top__nav a:not(.btn) {
  font: 500 .95rem/1 var(--f-head); color: var(--text); text-decoration: none;
  padding: 6px 0; border-bottom: 2px solid transparent;
}
.top__nav a:not(.btn):hover { border-color: var(--blue); color: var(--blue); }
.top__burger { display: none; }

@media (max-width: 860px) {
  .top__burger {
    display: flex; flex-direction: column; justify-content: center; gap: 5px;
    width: 44px; height: 44px; padding: 10px; border: 0; background: none; cursor: pointer;
  }
  .top__burger span:not(.sr) { display: block; height: 2px; background: var(--ink); transition: transform .2s, opacity .2s; }
  .top__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .top__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .top__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .top__nav {
    position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 8px var(--gut) 20px;
    display: none;
  }
  .top__nav.is-open { display: flex; }
  .top__nav a:not(.btn) { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 1.05rem; }
  .top__nav .btn { margin-top: 16px; }
}

/* Úvod */
.hero {
  position: relative; overflow: hidden;
  background: var(--ink); color: #fff;
  padding-top: clamp(56px, 9vw, 112px);
}
.hero__tri {
  position: absolute; right: -8%; top: -6%;
  width: min(62vw, 720px); height: auto;
  fill: none; stroke: var(--blue); stroke-width: 2; opacity: .55;
}
.hero__tri path + path { stroke: rgba(255,255,255,.12); }
.hero__in { position: relative; z-index: 1; }
.hero h1 { max-width: 14ch; }
.hero__claim {
  display: flex; flex-wrap: wrap; gap: .4em 1.4em;
  font: 600 .85rem/1 var(--f-head); letter-spacing: .16em; text-transform: uppercase;
  color: var(--blue-300); margin-bottom: 1.6rem;
}
.hero__claim span { display: inline-flex; align-items: center; gap: .6em; }
.hero__claim span::before {
  content: ""; width: .7em; height: .6em; background: currentColor;
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}
.hero__lead { font-size: clamp(1.1rem, 1.6vw, 1.3rem); color: #c3cad6; max-width: 46ch; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 2rem; }
.hero__img { margin: clamp(8px, 2vw, 24px) 0 0; position: relative; }
.hero__img img { width: 100%; max-width: 1600px; margin: 0 auto; }
.hero__img::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to bottom, var(--ink) 0, transparent 18%);
  pointer-events: none;
}

/* Náklady */
.cost {
  background: var(--blue); color: #fff;
  padding: calc(var(--cut) + 48px) 0 calc(var(--cut) + 48px);
  margin-top: calc(var(--cut) * -1);
  position: relative;
  clip-path: polygon(0 var(--cut), 100% 0, 100% calc(100% - var(--cut)), 0 100%);
}
.cost__grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
.bar {
  display: grid; grid-template-columns: 1fr auto; grid-template-areas: "label val" "track val";
  gap: 10px 20px; align-items: end; margin-bottom: 28px;
}
.bar__label { grid-area: label; font: 500 1rem/1.3 var(--f-head); }
.bar__track { grid-area: track; }
.bar__val { grid-area: val; font: 400 1rem/1 var(--f-head); white-space: nowrap; min-width: 4.6em; }
.bar__val strong { font-size: clamp(2.4rem, 5vw, 3.6rem); font-weight: 700; letter-spacing: -.03em; }
.bar__track { height: 18px; background: rgba(255,255,255,.14); }
.bar__fill { height: 100%; width: var(--w); background: #fff; }
.bar__fill--old { background: var(--ink); }
.cost__note { font-size: .95rem; color: #c9d8f5; margin: 8px 0 0; }
.cost__facts { margin: 0; display: grid; gap: 22px; }
.cost__facts div { border-left: 3px solid #fff; padding-left: 18px; }
.cost__facts dt { font: 700 clamp(1.6rem, 3vw, 2.2rem)/1.1 var(--f-head); letter-spacing: -.02em; }
.cost__facts dd { margin: 4px 0 0; color: #dbe5fa; }

/* Sekce */
.sec { padding: var(--sec) 0; }
.sec--paper { background: var(--paper); }
.sec--ink { background: var(--ink); color: #dfe4ec; }
.sec--ink h2, .sec--ink h3 { color: #fff; }
.sec--ink .eyebrow { color: var(--blue-300); }
.sec--ink .eyebrow::before, .sec--ink .tri { background: var(--blue-300); }
.sec--blue { background: var(--blue); color: #fff; }
.sec--blue .eyebrow { color: #fff; }
.sec--blue .eyebrow::before { background: #fff; }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 60ch; }

/* Problém */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 4vw, 48px); margin-top: 2.5rem; }
.card-num { border-top: 3px solid var(--ink); padding-top: 24px; }
.card-num__big {
  font: 700 clamp(3rem, 7vw, 5.2rem)/1 var(--f-head); letter-spacing: -.04em;
  color: var(--blue); margin-bottom: .3em;
}
.who {
  margin: clamp(48px, 7vw, 88px) 0 0; padding: clamp(28px, 4vw, 48px);
  background: var(--paper); position: relative;
  border-left: 6px solid var(--blue);
}
.who p { font: 500 clamp(1.15rem, 2vw, 1.45rem)/1.45 var(--f-head); color: var(--ink); max-width: 56ch; }
.who cite { font-style: normal; font-size: .95rem; color: var(--muted); }

/* Řešení */
.how { display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(32px, 5vw, 64px); align-items: start; margin-top: 2.5rem; }
.how__img { margin: 0; }
.how__img img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; clip-path: polygon(0 0, 100% 0, 100% 88%, 88% 100%, 0 100%); }
.how__img figcaption { font-size: .85rem; color: #8892a3; margin-top: 10px; }
.steps { list-style: none; margin: 0; padding: 0; counter-reset: s; }
.steps li { counter-increment: s; position: relative; padding: 0 0 28px 64px; border-left: 1px solid var(--line-dark); margin-left: 20px; }
.steps li:last-child { border-left-color: transparent; padding-bottom: 0; }
.steps li::before {
  content: counter(s, decimal-leading-zero);
  position: absolute; left: -21px; top: -4px;
  width: 42px; height: 42px; display: grid; place-items: center;
  font: 700 .9rem/1 var(--f-head); color: #fff; background: var(--blue);
}
.steps p { color: #b8c0cd; }
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line-dark); margin-top: clamp(56px, 8vw, 96px); border: 1px solid var(--line-dark); }
.pillars article { background: var(--ink); padding: clamp(24px, 3vw, 40px); }
.pillars .tri { width: 28px; height: 24px; margin-bottom: 20px; }
.pillars p { color: #b8c0cd; margin: 0; }

/* Zařízení */
.models { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 2.5rem; }
.model { background: #fff; padding: 28px; display: flex; flex-direction: column; border-bottom: 4px solid var(--blue); }
.model__img { aspect-ratio: 1 / 1; margin-bottom: 20px; }
.model__img img { width: 100%; height: 100%; object-fit: contain; object-position: center bottom; }
.model__tag { font: 600 .78rem/1.2 var(--f-head); letter-spacing: .1em; text-transform: uppercase; color: var(--blue); margin-bottom: .5rem; }
.model__spec { margin: 8px 0 0; }
.model__spec div { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); }
.model__spec dt { color: var(--muted); }
.model__spec dd { margin: 0; font: 600 1rem/1.4 var(--f-head); color: var(--ink); text-align: right; }

.specs { margin-top: 28px; background: #fff; }
.specs summary, .sources summary {
  cursor: pointer; list-style: none;
  font: 600 1rem/1 var(--f-head); padding: 22px 28px;
  display: flex; justify-content: space-between; align-items: center;
}
.specs summary::-webkit-details-marker, .sources summary::-webkit-details-marker { display: none; }
.specs summary::after, .sources summary::after {
  content: ""; width: 12px; height: 10px; background: var(--blue);
  clip-path: polygon(0 0, 100% 0, 50% 100%); transition: transform .2s;
}
details[open] > summary::after { transform: rotate(180deg); }
.specs__scroll { overflow-x: auto; padding: 0 28px; }
.specs table { width: 100%; min-width: 620px; border-collapse: collapse; font-size: 1rem; }
.specs th, .specs td { text-align: left; padding: 12px 14px 12px 0; border-top: 1px solid var(--line); vertical-align: top; }
.specs thead th { font-family: var(--f-head); font-weight: 600; color: var(--blue); border-top: 0; }
.specs tbody th { font-weight: 400; color: var(--muted); }
.specs__note { font-size: .9rem; color: var(--muted); padding: 16px 28px 24px; margin: 0; }

/* Pro koho */
.who-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 2.5rem; border-top: 3px solid var(--ink); }
.who-grid article { padding: 28px 24px 8px 0; }
.who-grid article + article { padding-left: 24px; border-left: 1px solid var(--line); }
.who-grid p { color: var(--muted); }

/* Kontakt */
.sec--blue { clip-path: polygon(0 var(--cut), 100% 0, 100% 100%, 0 100%); padding-top: calc(var(--sec) + var(--cut)); }
.contact { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
.contact__intro > p:not(.eyebrow) { color: #dbe5fa; max-width: 42ch; }
.contact__info { list-style: none; padding: 0; margin: 2rem 0 0; display: grid; gap: 18px; }
.contact__info li { border-left: 3px solid #fff; padding-left: 16px; color: #dbe5fa; }
.contact__info a { color: #fff; font: 600 1.3rem/1.2 var(--f-head); }

.form { background: #fff; color: var(--text); padding: clamp(24px, 4vw, 44px); }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; min-width: 0; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field label { font: 600 .9rem/1.2 var(--f-head); }
.field input, .field textarea {
  font: inherit; font-size: 1rem; color: var(--text);
  padding: 12px 14px; border: 1px solid #b9c1cd; border-radius: 0; background: #fff;
  width: 100%;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue); box-shadow: inset 0 0 0 1px var(--blue); }
.field [aria-invalid="true"] { border-color: #c62828; box-shadow: inset 0 0 0 1px #c62828; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form__gdpr { font-size: .9rem; color: var(--muted); }
.form__msg { margin: 16px 0 0; font-weight: 600; min-height: 1.5em; }
.form__msg.is-ok { color: #1b7a3d; }
.form__msg.is-err { color: #c62828; }

/* Zdroje */
.sources { background: var(--paper); border-top: 1px solid var(--line); }
.sources summary { padding: 22px 0; color: var(--muted); }
.sources ol { margin: 0; padding: 0 0 28px 1.4em; font-size: .92rem; color: var(--muted); display: grid; gap: 8px; }
.sources a { word-break: break-word; }

/* Zápatí */
.foot { background: var(--ink); color: #9aa3b2; font-size: .95rem; padding: 36px 0; }
.foot__in { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 28px; }
.foot__in img { filter: brightness(0) invert(1); opacity: .9; }
.foot p { margin: 0; }
.foot p:last-child { margin-left: auto; }
.foot a { color: #fff; }

/* Podstránky */
.page { padding: clamp(48px, 7vw, 88px) 0 var(--sec); }
.page .wrap { max-width: 820px; }
.page h1 { font-size: clamp(2rem, 5vw, 3rem); }
.page h2 { font-size: 1.4rem; max-width: none; margin-top: 2em; }
.page li { margin-bottom: .4em; }

/* Responzivita */
@media (max-width: 960px) {
  .cost__grid, .split, .how, .contact { grid-template-columns: 1fr; }
  .models { grid-template-columns: 1fr; max-width: 520px; }
  .pillars { grid-template-columns: 1fr; }
  .who-grid { grid-template-columns: 1fr 1fr; }
  .who-grid article:nth-child(3) { padding-left: 0; border-left: 0; }
}
@media (max-width: 560px) {
  body { font-size: 1.0625rem; }
  .who-grid { grid-template-columns: 1fr; }
  .who-grid article + article { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .hero__cta .btn { width: 100%; }
  .foot p:last-child { margin-left: 0; }
  .top__logo img { height: 34px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}