/* ==========================================================================
   PURK s.r.o. – www.purk.cz
   Vizuální styl „Chráněné jádro“: světlý papír, grafit, Elory Orange
   Člen skupiny Elory Group – sdílí písmo Inter Tight a oranžový akcent
   ========================================================================== */

:root {
  --paper: #F5F4F0;          /* Paper – základní plocha */
  --white: #FFFFFF;
  --mist: #E8E6E0;           /* linky, rámečky */
  --mist-2: #DCD9D1;
  --graphite: #15171B;       /* text, tmavé sekce */
  --ink-2: #22252B;
  --ink-3: #2E323A;
  --steel: #5D6672;          /* doprovodný text */
  --steel-2: #8A929C;
  --orange: #FF6B1A;         /* Elory Orange – sdílený akcent skupiny */
  --orange-deep: #E2530A;
  --orange-soft: #FFE6D6;
  --heat-1: #FFB547;
  --heat-3: #E23D1E;
  --safe: #1E9E6A;           /* funkční barva: „v pořádku“ */
  --safe-soft: #DDF3E9;

  --font-sans: "Inter Tight", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --container: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --section: clamp(56px, 7.5vw, 112px);
  --r-sm: 10px;
  --r: 18px;
  --r-lg: 28px;
  --shadow: 0 1px 2px rgba(21,23,27,.04), 0 12px 32px -12px rgba(21,23,27,.14);
  --shadow-lg: 0 2px 4px rgba(21,23,27,.04), 0 40px 80px -30px rgba(21,23,27,.28);
  --ease: cubic-bezier(.2, .7, .1, 1);

  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--graphite);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1em; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; letter-spacing: -.025em; line-height: 1.06; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
::selection { background: var(--orange); color: var(--white); }
:focus-visible { outline: 2.5px solid var(--orange); outline-offset: 3px; border-radius: 6px; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--orange); color: var(--white); padding: 10px 16px; border-radius: var(--r-sm); font-weight: 600; transition: top .2s; }
.skip-link:focus { top: 16px; }

/* --------------------------------------------------------------------------
   Typografie
   -------------------------------------------------------------------------- */
.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 12.5px/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase;
  color: var(--orange-deep);
  margin-bottom: 16px;
}
.kicker::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 4px var(--orange-soft); }
.kicker--light { color: var(--heat-1); }
.kicker--light::before { box-shadow: 0 0 0 4px rgba(255,107,26,.22); }

.h1 { font-size: clamp(40px, 6vw, 80px); letter-spacing: -.04em; line-height: .98; font-weight: 750; }
.h2 { font-size: clamp(28px, 3.3vw, 46px); letter-spacing: -.035em; line-height: 1.04; }
.h3 { font-size: clamp(19px, 1.6vw, 22px); letter-spacing: -.02em; line-height: 1.2; font-weight: 650; }
.hl { color: var(--orange); }
.h2 + .lead, .h2 + p { margin-top: 16px; }
.made .h2, .quote .h2, .lab .h2 { font-size: clamp(28px, 2.9vw, 40px); }
.hl-under { background: linear-gradient(transparent 62%, var(--orange-soft) 62%, var(--orange-soft) 92%, transparent 92%); padding-inline: 2px; }
.lead { font-size: clamp(16.5px, 1.2vw, 18.5px); line-height: 1.55; color: var(--steel); max-width: 60ch; }
.lead strong { color: var(--graphite); font-weight: 600; }
.mono { font-family: var(--font-mono); font-feature-settings: "zero" 1; }

/* --------------------------------------------------------------------------
   Tlačítka a čipy
   -------------------------------------------------------------------------- */
.btn {
  --bg: var(--white); --fg: var(--graphite); --bd: var(--mist-2);
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 22px;
  background: var(--bg); color: var(--fg); border: 1.5px solid var(--bd); border-radius: 999px;
  font: 600 15.5px/1 var(--font-sans); letter-spacing: -.005em; cursor: pointer;
  transition: transform .25s var(--ease), background .25s, border-color .25s, color .25s, box-shadow .25s;
}
.btn svg { width: 18px; height: 18px; transition: transform .3s var(--ease); }
.btn:hover { transform: translateY(-1px); }
.btn:hover svg { transform: translateX(3px); }
.btn--primary { --bg: var(--orange); --fg: var(--white); --bd: var(--orange); box-shadow: 0 10px 24px -10px rgba(255,107,26,.7); }
.btn--primary:hover { --bg: var(--orange-deep); --bd: var(--orange-deep); }
.btn--dark { --bg: var(--graphite); --fg: var(--white); --bd: var(--graphite); }
.btn--dark:hover { --bg: var(--ink-3); --bd: var(--ink-3); }
.btn--ghost-light { --bg: transparent; --fg: var(--white); --bd: rgba(255,255,255,.25); }
.btn--ghost-light:hover { --bd: var(--white); }
.btn--sm { min-height: 42px; padding: 0 18px; font-size: 14.5px; }

.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 12px; border-radius: 999px;
  background: var(--white); border: 1px solid var(--mist);
  font: 500 13px/1 var(--font-mono); color: var(--graphite); white-space: nowrap;
}
.chip b { font-weight: 600; color: var(--orange-deep); }
.chip--dark { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.12); color: var(--white); }
.chip--dark b { color: var(--heat-1); }

/* --------------------------------------------------------------------------
   Hlavička
   -------------------------------------------------------------------------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(245,244,240,.82); backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px); border-bottom: 1px solid transparent; transition: border-color .3s, background .3s; }
.site-header.is-scrolled { border-bottom-color: var(--mist); background: rgba(245,244,240,.92); }
.site-header__inner { display: flex; align-items: center; gap: 28px; height: 76px; }
.logo { display: inline-flex; align-items: center; flex: none; }
.logo svg { height: 36px; width: auto; }
.nav { display: flex; align-items: center; gap: 26px; margin-left: auto; }
.nav__list { display: flex; gap: 4px; }
.nav__list a { display: block; padding: 8px 12px; border-radius: 999px; font-size: 15px; font-weight: 500; color: var(--steel); transition: color .2s, background .2s; }
.nav__list a:hover { color: var(--graphite); background: rgba(21,23,27,.05); }
.nav__list a.is-active { color: var(--graphite); background: var(--white); box-shadow: 0 0 0 1px var(--mist); }
.nav__tools { display: flex; align-items: center; gap: 10px; }
.lang { position: relative; }
.lang summary { list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; padding: 8px 12px; border-radius: 999px; font: 500 13px/1 var(--font-mono); color: var(--steel); border: 1px solid var(--mist); background: var(--white); }
.lang summary::-webkit-details-marker { display: none; }
.lang summary svg { width: 14px; height: 14px; }
.lang ul { position: absolute; right: 0; top: calc(100% + 8px); background: var(--white); border: 1px solid var(--mist); border-radius: var(--r-sm); box-shadow: var(--shadow); padding: 6px; min-width: 150px; }
.lang li a { display: flex; justify-content: space-between; gap: 12px; padding: 8px 10px; border-radius: 8px; font-size: 14px; }
.lang li a:hover { background: var(--paper); }
.lang li a span { font: 500 12px var(--font-mono); color: var(--steel-2); }
.partner-link { display: inline-flex; align-items: center; gap: 7px; font-size: 14.5px; font-weight: 600; color: var(--graphite); padding: 8px 12px; border-radius: 999px; }
.partner-link svg { width: 16px; height: 16px; color: var(--orange); }
.partner-link:hover { background: rgba(21,23,27,.05); }
.nav-toggle { display: none; margin-left: auto; width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--mist-2); background: var(--white); cursor: pointer; }
.nav-toggle span { display: block; width: 18px; height: 2px; border-radius: 2px; margin: 4px auto; background: var(--graphite); transition: transform .3s var(--ease), opacity .2s; }
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 1120px) {
  .nav-toggle { display: block; }
  .nav { position: fixed; inset: 76px 0 auto; margin: 0; flex-direction: column; align-items: stretch; gap: 16px; background: var(--paper); border-bottom: 1px solid var(--mist); padding: 12px var(--gutter) 24px; transform: translateY(-10px); opacity: 0; visibility: hidden; transition: transform .3s var(--ease), opacity .2s, visibility .2s; max-height: calc(100vh - 76px); overflow-y: auto; }
  .nav-open .nav { transform: none; opacity: 1; visibility: visible; }
  .nav__list { flex-direction: column; }
  .nav__list a { padding: 14px 4px; font-size: 19px; color: var(--graphite); border-radius: 0; border-bottom: 1px solid var(--mist); }
  .nav__list a.is-active { box-shadow: none; background: none; }
  .nav__tools { flex-wrap: wrap; }
  .nav__tools .btn { flex: 1 1 100%; }
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
/* První obrazovka: úvod + pruh parametrů vždy na výšku okna (pod hlavičkou 76 px + 1 px okraj) */
.first-screen { display: flex; flex-direction: column; min-height: calc(100vh - 77px); min-height: calc(100svh - 77px); }
.first-screen .hero { flex: 1; display: flex; align-items: center; }
.first-screen .hero > .container { width: 100%; }
.hero { position: relative; padding: clamp(24px, 4.5vh, 56px) 0; overflow: hidden; isolation: isolate; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -2;
  background-image: linear-gradient(rgba(21,23,27,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(21,23,27,.055) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse 70% 80% at 72% 45%, #000 25%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 72% 45%, #000 25%, transparent 75%);
}
.hero__grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr); gap: 32px; align-items: center; }
.hero h1 { margin-bottom: 20px; font-size: clamp(36px, 3.9vw, 60px); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.hero__trust { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.hero__trust .chip svg { width: 15px; height: 15px; color: var(--safe); }

.hero__visual { position: relative; aspect-ratio: 1 / 1.02; height: clamp(280px, calc(100svh - 300px), 500px); width: auto; max-width: 100%; justify-self: end; }
.hero__visual > svg { width: 100%; height: 100%; overflow: visible; }
.ring { transform-origin: 280px 290px; animation: breathe 6s var(--ease) infinite; }
.ring--2 { animation-delay: .6s; }
.ring--3 { animation-delay: 1.2s; }
@keyframes breathe { 0%, 100% { opacity: .55; transform: scale(1); } 50% { opacity: 1; transform: scale(1.025); } }
.callout {
  position: absolute; display: flex; align-items: center; gap: 10px;
  padding: 10px 14px 10px 10px; background: var(--white); border-radius: 14px; box-shadow: var(--shadow);
  border: 1px solid var(--mist); white-space: nowrap;
  animation: float 7s ease-in-out infinite;
}
.callout i { flex: none; width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--orange-soft); color: var(--orange-deep); font: 700 11px var(--font-mono); font-style: normal; }
.callout b { display: block; font: 600 15px/1.15 var(--font-mono); letter-spacing: -.01em; }
.callout small { display: block; font-size: 12.5px; color: var(--steel); }
.callout--1 { left: -2%; top: 14%; }
.callout--2 { right: -4%; top: 30%; animation-delay: -2s; }
.callout--3 { left: 2%; bottom: 18%; animation-delay: -4s; }
.callout--4 { right: 0; bottom: 6%; animation-delay: -1s; }
.callout--4 i { background: var(--safe-soft); color: var(--safe); }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }

@media (max-width: 980px) {
  .first-screen { min-height: 0; }
  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { display: none; }  /* na tabletu na výšku a mobilu by odsunula pruh parametrů pod první obrazovku */
}
@media (max-width: 520px) {
  .callout { padding: 7px 10px 7px 7px; gap: 7px; border-radius: 11px; }
  .callout i { width: 26px; height: 26px; border-radius: 8px; font-size: 9.5px; }
  .callout b { font-size: 12.5px; }
  .callout small { font-size: 10.5px; }
  .callout--2 { right: -1%; }
  .callout--1 { left: 0; }
}

@media (max-width: 600px) {
  .hero__trust { display: none; }
  .hero__actions { flex-wrap: nowrap; gap: 8px; margin-top: 20px; }
  .hero__actions .btn { flex: 1 1 auto; min-height: 46px; padding: 0 12px; font-size: 14.5px; }
  .hero .lead { font-size: 16px; }
}

/* --------------------------------------------------------------------------
   Pruh s parametry
   -------------------------------------------------------------------------- */
.specbar { background: var(--graphite); color: var(--white); }
.specbar__grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.spec { padding: 22px 22px 22px 0; border-right: 1px solid rgba(255,255,255,.1); }
.spec + .spec { padding-left: 26px; }
.spec:last-child { border-right: 0; }
.spec__val { display: block; font: 600 clamp(26px, 2.6vw, 38px)/1 var(--font-mono); letter-spacing: -.04em; margin-bottom: 7px; }
.spec__val small { font-size: .5em; color: var(--heat-1); letter-spacing: 0; margin-left: 4px; }
.spec__lab { display: block; font-size: 13.5px; color: rgba(255,255,255,.62); line-height: 1.35; }
@media (max-width: 860px) {
  .specbar__grid { grid-template-columns: 1fr 1fr; }
  .spec, .spec + .spec { padding: 18px 14px 18px 0; }
  .spec:nth-child(even) { padding-left: 18px; border-right: 0; }
  .spec:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.1); }
}

/* --------------------------------------------------------------------------
   Sekce
   -------------------------------------------------------------------------- */
.section { padding-block: var(--section); position: relative; }
.section--white { background: var(--white); }
.section--dark { background: var(--graphite); color: var(--white); }
.section--dark .lead { color: rgba(255,255,255,.66); }
.section-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .9fr); gap: 20px 56px; align-items: end; margin-bottom: clamp(28px, 4vw, 52px); }
.section-head .lead { margin: 0; }
@media (max-width: 860px) { .section-head { grid-template-columns: 1fr; } }

/* --------------------------------------------------------------------------
   Proč PURK – výhody
   -------------------------------------------------------------------------- */
.usp { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.usp__card { position: relative; background: var(--white); border: 1px solid var(--mist); border-radius: var(--r-lg); padding: 22px 22px 22px; transition: transform .35s var(--ease), box-shadow .35s var(--ease); overflow: hidden; }
.usp__card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.usp__art { height: 104px; margin: -4px -4px 18px; border-radius: 18px; background: var(--paper); display: grid; place-items: center; overflow: hidden; }
.usp__art svg { width: 100%; height: 100%; }
.usp__card h3 { margin-bottom: 10px; }
.usp__card p { color: var(--steel); font-size: 15px; margin: 0; }
.usp__tag { display: inline-block; margin-top: 16px; font: 500 12px var(--font-mono); color: var(--orange-deep); background: var(--orange-soft); padding: 5px 9px; border-radius: 6px; }
@media (max-width: 1100px) { .usp { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .usp { grid-template-columns: 1fr; } }

/* --------------------------------------------------------------------------
   Produkty
   -------------------------------------------------------------------------- */
.products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.product { display: flex; flex-direction: column; background: var(--paper); border: 1px solid var(--mist); border-radius: var(--r-lg); overflow: hidden; transition: box-shadow .35s var(--ease), transform .35s var(--ease); }
.product:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.product__art { position: relative; height: 220px; display: grid; place-items: center; background: radial-gradient(circle at 50% 60%, #fff 0%, var(--paper) 70%); border-bottom: 1px solid var(--mist); }
.product__art svg { height: 188px; width: auto; }
.product__code { position: absolute; left: 18px; top: 16px; font: 600 13px var(--font-mono); background: var(--graphite); color: var(--white); padding: 6px 10px; border-radius: 8px; letter-spacing: .02em; }
.product__badge { position: absolute; right: 16px; top: 16px; font: 500 11.5px var(--font-mono); color: var(--safe); background: var(--safe-soft); padding: 6px 9px; border-radius: 8px; }
.product__body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.product__body h3 { margin-bottom: 8px; }
.product__body > p { color: var(--steel); font-size: 15.5px; }
.specs { margin: 6px 0 20px; border-top: 1px solid var(--mist); }
.specs div { display: flex; justify-content: space-between; gap: 16px; padding: 8px 0; border-bottom: 1px solid var(--mist); font-size: 14.5px; }
.specs dt { color: var(--steel); }
.specs dd { margin: 0; font: 600 13.5px var(--font-mono); text-align: right; }
.product__extras { font-size: 14px; color: var(--steel); margin-bottom: 22px; }
.product__extras b { color: var(--graphite); font-weight: 600; }
.product .btn { margin-top: auto; align-self: flex-start; }
.custom { margin-top: 18px; display: grid; grid-template-columns: auto 1fr auto; gap: 24px; align-items: center; background: var(--graphite); color: var(--white); border-radius: var(--r-lg); padding: 22px 28px; }
.custom svg { width: 64px; height: 64px; }
.custom h3 { margin-bottom: 6px; }
.custom p { margin: 0; color: rgba(255,255,255,.66); font-size: 15.5px; max-width: 62ch; }
@media (max-width: 1060px) { .products { grid-template-columns: 1fr 1fr; } }
@media (max-width: 700px) {
  .products { grid-template-columns: 1fr; }
  .custom { grid-template-columns: 1fr; gap: 16px; padding: 24px 22px; }
}

/* --------------------------------------------------------------------------
   Technologie – EI simulace
   -------------------------------------------------------------------------- */
.lab { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(32px, 5vw, 72px); align-items: start; }
.lab__text p { color: rgba(255,255,255,.7); }
.criteria { display: grid; gap: 10px; margin-top: 22px; }
.criterion { display: grid; grid-template-columns: 46px 1fr; gap: 14px; align-items: start; padding: 14px 16px; border-radius: var(--r); background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08); }
.criterion > span { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; font: 700 22px var(--font-mono); background: rgba(255,107,26,.14); color: var(--heat-1); }
.criterion h4 { font-size: 17px; font-weight: 650; margin: 2px 0 4px; letter-spacing: -.01em; }
.criterion p { margin: 0; font-size: 14.5px; color: rgba(255,255,255,.62); }

.sim { background: var(--ink-2); border: 1px solid rgba(255,255,255,.08); border-radius: var(--r-lg); padding: 22px; box-shadow: 0 40px 80px -40px rgba(0,0,0,.6); }
.sim__top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 18px; }
.sim__title { font: 500 12.5px var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: rgba(255,255,255,.55); }
.seg { display: inline-flex; padding: 4px; border-radius: 999px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.08); }
.seg button { border: 0; background: none; cursor: pointer; padding: 7px 14px; border-radius: 999px; font: 600 13px var(--font-mono); color: rgba(255,255,255,.6); transition: background .2s, color .2s; }
.seg button[aria-pressed="true"] { background: var(--orange); color: var(--white); }
.sim__readout { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 16px; }
.readout { padding: 14px 16px; border-radius: 14px; background: rgba(0,0,0,.25); border: 1px solid rgba(255,255,255,.06); }
.readout small { display: block; font-size: 12px; color: rgba(255,255,255,.5); margin-bottom: 6px; }
.readout b { display: block; font: 600 clamp(17px, 1.75vw, 24px)/1.1 var(--font-mono); letter-spacing: -.03em; font-variant-numeric: tabular-nums; white-space: nowrap; }
.readout--hot b { color: var(--heat-1); }
.readout--ok b { color: #5FD3A2; }
.readout--over b { color: rgba(255,255,255,.55); }
.sim__chart { width: 100%; height: auto; border-radius: 14px; background: rgba(0,0,0,.2); }
.sim__chart text { font: 500 10px var(--font-mono); fill: rgba(255,255,255,.45); }
.sim__slider { margin-top: 18px; }
.sim__slider label { display: flex; justify-content: space-between; font-size: 13px; color: rgba(255,255,255,.55); margin-bottom: 8px; }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 8px; border-radius: 99px; background: linear-gradient(90deg, var(--heat-1), var(--orange) 50%, var(--heat-3)); outline-offset: 6px; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 26px; height: 26px; border-radius: 50%; background: var(--white); border: 4px solid var(--orange); box-shadow: 0 4px 12px rgba(0,0,0,.4); cursor: grab; }
input[type="range"]::-moz-range-thumb { width: 22px; height: 22px; border-radius: 50%; background: var(--white); border: 4px solid var(--orange); cursor: grab; }
.sim__note { margin: 14px 0 0; font-size: 12.5px; color: rgba(255,255,255,.45); }
@media (max-width: 980px) { .lab { grid-template-columns: 1fr; } }
@media (max-width: 520px) { .sim { padding: 18px; } .sim__readout { grid-template-columns: 1fr 1fr; } .readout:first-child { grid-column: 1 / -1; } }

/* Anatomie skříně */
.anatomy { margin-top: clamp(48px, 6vw, 84px); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.anatomy__figure { position: relative; background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.08); border-radius: var(--r-lg); padding: 24px; }
.anatomy__figure svg { width: 100%; height: auto; }
.hotspot { position: absolute; width: 30px; height: 30px; translate: -50% -50%; border-radius: 50%; border: 0; cursor: pointer; background: var(--orange); color: var(--white); font: 700 12px var(--font-mono); box-shadow: 0 0 0 6px rgba(255,107,26,.25); transition: transform .2s var(--ease), box-shadow .2s; }
.hotspot:hover, .hotspot[aria-pressed="true"] { transform: scale(1.12); box-shadow: 0 0 0 10px rgba(255,107,26,.25); }
.parts { display: grid; gap: 8px; counter-reset: part; }
.part { display: grid; grid-template-columns: 34px 1fr; gap: 12px; padding: 10px 14px; border-radius: 14px; border: 1px solid transparent; cursor: pointer; transition: background .2s, border-color .2s; text-align: left; background: none; width: 100%; }
.part > span { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font: 700 12px var(--font-mono); background: rgba(255,255,255,.08); color: var(--white); }
.part h4 { font-size: 16.5px; font-weight: 650; margin: 3px 0 2px; color: var(--white); letter-spacing: -.01em; }
.part p { margin: 0; font-size: 14.5px; color: rgba(255,255,255,.58); }
.part:hover, .part.is-on { background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.1); }
.part.is-on > span { background: var(--orange); }
@media (max-width: 980px) { .anatomy { grid-template-columns: 1fr; } }

/* --------------------------------------------------------------------------
   Projektantům – dekodér kódu
   -------------------------------------------------------------------------- */
.planner { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 20px; }
.decoder { background: var(--white); border: 1px solid var(--mist); border-radius: var(--r-lg); padding: clamp(22px, 3vw, 34px); box-shadow: var(--shadow); }
.decoder__code { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 2px; margin: 4px 0 16px; font: 600 clamp(28px, 3.4vw, 42px)/1.1 var(--font-mono); letter-spacing: -.02em; }
.decoder__code span { padding: 2px 6px; border-radius: 10px; transition: background .25s; }
.decoder__code .c-s { color: var(--graphite); }
.decoder__code .c-v { background: #FFF1E7; color: var(--orange-deep); }
.decoder__code .c-w { background: #EEF1F4; color: #3B4652; }
.decoder__code .c-d { background: #ECF6F1; color: #16805A; }
.decoder__code .c-e { background: var(--graphite); color: var(--white); margin-left: 10px; font-size: .62em; align-self: center; padding: 6px 10px; }
.decoder__dims { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.fields { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 14px; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--steel); margin-bottom: 5px; }
.field select, .field input, .field textarea {
  width: 100%; min-height: 44px; padding: 9px 13px; border-radius: 11px; border: 1.5px solid var(--mist-2); background: var(--white);
  font-size: 16px; transition: border-color .2s, box-shadow .2s;
}
.field textarea { min-height: 84px; resize: vertical; }
.field select:focus, .field input:focus, .field textarea:focus { outline: none; border-color: var(--orange); box-shadow: 0 0 0 4px var(--orange-soft); }
.field--full { grid-column: 1 / -1; }
.decoder__note { margin: 18px 0 0; font-size: 14px; color: var(--steel); }
.decoder__note b { color: var(--graphite); }
.docs { display: grid; gap: 12px; align-content: start; }
.doc { display: grid; grid-template-columns: 44px 1fr auto; gap: 14px; align-items: center; padding: 14px 18px; background: var(--white); border: 1px solid var(--mist); border-radius: var(--r); transition: border-color .2s, transform .25s var(--ease); }
.doc:hover { border-color: var(--orange); transform: translateX(3px); }
.doc__ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--paper); color: var(--orange-deep); font: 700 11px var(--font-mono); }
.doc b { display: block; font-weight: 600; font-size: 16px; }
.doc small { color: var(--steel); font-size: 13.5px; }
.doc > svg { width: 20px; height: 20px; color: var(--steel-2); }
.advice { padding: 22px; border-radius: var(--r); background: var(--orange-soft); }
.advice h4 { font-size: 17px; margin-bottom: 6px; letter-spacing: -.01em; }
.advice p { font-size: 14.5px; margin: 0 0 12px; color: #6A3A1C; }
@media (max-width: 980px) { .planner { grid-template-columns: 1fr; } }
@media (max-width: 520px) { .fields { grid-template-columns: 1fr; } }

/* --------------------------------------------------------------------------
   Výroba a zkoušky
   -------------------------------------------------------------------------- */
.made { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.made__steps { display: grid; gap: 2px; margin-top: 20px; }
.made__steps li { display: grid; grid-template-columns: 40px 1fr; gap: 14px; padding: 11px 0; border-top: 1px solid var(--mist); }
.made__steps li > span { font: 600 13px var(--font-mono); color: var(--orange-deep); padding-top: 3px; }
.made__steps h4 { font-size: 17px; font-weight: 650; margin-bottom: 2px; letter-spacing: -.01em; }
.made__steps p { margin: 0; color: var(--steel); font-size: 15px; }
.mosaic { display: grid; grid-template-columns: repeat(6, 1fr); grid-auto-rows: 80px; gap: 10px; }
.mosaic figure { margin: 0; position: relative; border-radius: var(--r); overflow: hidden; background: var(--mist); }
.mosaic img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.mosaic figure:hover img { transform: scale(1.04); }
.mosaic figcaption { position: absolute; left: 10px; bottom: 10px; right: 10px; display: inline-flex; }
.mosaic figcaption span { font: 500 11.5px var(--font-mono); background: rgba(21,23,27,.78); color: var(--white); padding: 5px 8px; border-radius: 7px; backdrop-filter: blur(6px); }
.m1 { grid-column: 1 / 5; grid-row: span 3; }
.m2 { grid-column: 5 / 7; grid-row: span 3; }
.m3 { grid-column: 1 / 3; grid-row: span 3; }
.m4 { grid-column: 3 / 5; grid-row: span 3; }
.m5 { grid-column: 5 / 7; grid-row: span 3; }
@media (max-width: 980px) { .made { grid-template-columns: 1fr; } }
@media (max-width: 560px) {
  .mosaic { grid-template-columns: 1fr 1fr; grid-auto-rows: 120px; }
  .m1 { grid-column: 1 / -1; grid-row: span 2; }
  .m2, .m3, .m4, .m5 { grid-column: span 1; grid-row: span 2; }
}


/* Projekt spolufinancovaný EU */
.eu-project { margin-top: clamp(48px, 6vw, 80px); display: grid; grid-template-columns: auto 1fr auto; gap: 28px; align-items: center; padding: 24px 28px; border-radius: var(--r-lg); border: 1px solid var(--mist); background: var(--paper); }
.eu-project img { width: 200px; height: auto; border-radius: 4px; }
.eu-project h3 { font-size: 17px; font-weight: 650; letter-spacing: -.01em; margin-bottom: 6px; line-height: 1.3; }
.eu-project p { margin: 0; font-size: 14px; color: var(--steel); max-width: 80ch; }
@media (max-width: 860px) { .eu-project { grid-template-columns: 1fr; gap: 16px; padding: 22px 20px; } }

/* --------------------------------------------------------------------------
   Reference
   -------------------------------------------------------------------------- */
.refs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.ref { display: flex; flex-direction: column; gap: 12px; padding: 18px; background: var(--white); border: 1px solid var(--mist); border-radius: var(--r); min-height: 140px; transition: border-color .2s, box-shadow .3s var(--ease); }
.ref:hover { border-color: var(--mist-2); box-shadow: var(--shadow); }
.ref__ico { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: var(--paper); color: var(--graphite); }
.ref__ico svg { width: 22px; height: 22px; }
.ref h3 { font-size: 17.5px; font-weight: 650; letter-spacing: -.015em; line-height: 1.25; }
.ref small { margin-top: auto; font: 500 12px var(--font-mono); color: var(--steel); letter-spacing: .02em; }
.ref--sum { background: var(--graphite); color: var(--white); border-color: var(--graphite); justify-content: space-between; }
.ref--sum b { font: 600 40px/1 var(--font-mono); letter-spacing: -.04em; color: var(--heat-1); }
.ref--sum p { margin: 0; font-size: 15px; color: rgba(255,255,255,.7); }
@media (max-width: 1000px) { .refs { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .refs { grid-template-columns: 1fr; } }

/* --------------------------------------------------------------------------
   Konfigurátor pro partnery
   -------------------------------------------------------------------------- */
.partner { position: relative; overflow: hidden; border-radius: var(--r-lg); background: var(--graphite); color: var(--white); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 36px; align-items: center; padding: clamp(24px, 4vw, 52px); }
.partner::after { content: ""; position: absolute; right: -180px; top: -180px; width: 520px; height: 520px; border-radius: 50%; background: radial-gradient(circle, rgba(255,107,26,.28), transparent 65%); pointer-events: none; }
.partner__list { display: grid; gap: 8px; margin: 18px 0 24px; }
.partner__list li { display: flex; gap: 12px; align-items: flex-start; color: rgba(255,255,255,.78); font-size: 15.5px; }
.partner__list svg { flex: none; width: 20px; height: 20px; color: var(--heat-1); margin-top: 2px; }
.ui { position: relative; z-index: 1; background: var(--ink-2); border-radius: 20px; border: 1px solid rgba(255,255,255,.1); box-shadow: 0 30px 60px -30px rgba(0,0,0,.7); overflow: hidden; }
.ui__bar { display: flex; gap: 6px; padding: 12px 14px; border-bottom: 1px solid rgba(255,255,255,.07); }
.ui__bar i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.14); }
.ui__body { padding: 20px; display: grid; gap: 14px; }
.ui__steps { display: flex; gap: 6px; }
.ui__steps span { flex: 1; height: 5px; border-radius: 4px; background: rgba(255,255,255,.1); }
.ui__steps span.on { background: var(--orange); }
.ui__row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.ui__opt { padding: 12px; border-radius: 12px; border: 1px solid rgba(255,255,255,.1); font: 500 12.5px var(--font-mono); color: rgba(255,255,255,.7); }
.ui__opt.on { border-color: var(--orange); background: rgba(255,107,26,.12); color: var(--white); }
.ui__opt small { display: block; color: rgba(255,255,255,.4); font-size: 11px; margin-top: 4px; }
.ui__sum { display: flex; justify-content: space-between; align-items: center; padding: 14px; border-radius: 12px; background: rgba(0,0,0,.25); font: 600 15px var(--font-mono); }
.ui__sum em { font-style: normal; font-size: 12px; color: rgba(255,255,255,.45); display: flex; align-items: center; gap: 6px; }
.ui__sum em svg { width: 14px; height: 14px; }
@media (max-width: 900px) { .partner { grid-template-columns: 1fr; } }

/* --------------------------------------------------------------------------
   Poptávka a kontakty
   -------------------------------------------------------------------------- */
.quote { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: clamp(32px, 5vw, 72px); align-items: start; }
.people { display: grid; gap: 8px; margin-top: 22px; }
.person { display: grid; grid-template-columns: 44px 1fr; gap: 14px; align-items: center; padding: 11px 14px; background: var(--white); border: 1px solid var(--mist); border-radius: var(--r); }
.person__ava { width: 44px; height: 44px; border-radius: 50%; overflow: hidden; display: grid; place-items: center; background: var(--graphite); color: var(--white); font: 600 17px var(--font-mono); }
.person__ava img { width: 100%; height: 100%; object-fit: cover; }
.person b { display: block; font-size: 15.5px; font-weight: 650; letter-spacing: -.01em; }
.person small { display: block; color: var(--steel); font-size: 13px; margin-bottom: 2px; }
.person a { font: 500 13.5px var(--font-mono); color: var(--graphite); border-bottom: 1px solid var(--mist-2); margin-right: 12px; transition: color .2s, border-color .2s; }
.person a:hover { color: var(--orange-deep); border-color: var(--orange); }
.addr { margin-top: 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; font-size: 14.5px; color: var(--steel); }
.addr b { display: block; color: var(--graphite); font-weight: 600; margin-bottom: 2px; }
.form { background: var(--white); border: 1px solid var(--mist); border-radius: var(--r-lg); padding: clamp(20px, 2.6vw, 30px); box-shadow: var(--shadow); }
.form__types { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 14px; }
.type-opt { position: relative; }
.type-opt input { position: absolute; opacity: 0; inset: 0; }
.type-opt span { display: block; text-align: center; padding: 9px 6px; border-radius: 12px; border: 1.5px solid var(--mist-2); font: 600 13.5px var(--font-mono); cursor: pointer; transition: border-color .2s, background .2s; }
.type-opt span small { display: block; font: 500 11px var(--font-sans); color: var(--steel); margin-top: 3px; }
.type-opt input:checked + span { border-color: var(--orange); background: #FFF6F0; }
.type-opt input:focus-visible + span { outline: 2.5px solid var(--orange); outline-offset: 2px; }
.form__foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 14px; margin-top: 16px; }
.form__foot p { margin: 0; font-size: 12.5px; color: var(--steel); max-width: 44ch; }
.form__foot a { text-decoration: underline; }
.form__ok { display: none; margin-top: 16px; padding: 14px 16px; border-radius: 12px; background: var(--safe-soft); color: #11603F; font-size: 14.5px; }
.form__ok.is-on { display: block; }
@media (max-width: 980px) { .quote { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .form__types { grid-template-columns: 1fr 1fr; } .addr { grid-template-columns: 1fr; } }

/* --------------------------------------------------------------------------
   Patička
   -------------------------------------------------------------------------- */
.site-footer { background: var(--graphite); color: rgba(255,255,255,.7); padding: 56px 0 28px; }
.footer-top { display: grid; grid-template-columns: minmax(0, 1.3fr) repeat(3, minmax(0, .7fr)); gap: 36px; padding-bottom: 36px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer-top .logo svg { height: 38px; }
.footer-top > div > p { margin-top: 18px; font-size: 14.5px; max-width: 36ch; }
.site-footer h4 { font: 500 12px var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: rgba(255,255,255,.45); margin-bottom: 16px; }
.site-footer li + li { margin-top: 9px; }
.site-footer a { transition: color .2s; }
.site-footer a:hover { color: var(--heat-1); }
.group { display: inline-flex; align-items: center; gap: 12px; margin-top: 22px; padding: 12px 16px; border-radius: 14px; border: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.6); font-size: 12.5px; transition: border-color .2s; }
.group:hover { border-color: var(--orange); color: rgba(255,255,255,.85); }
.group svg { width: 92px; height: 20px; color: #F4F1EC; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px; padding-top: 26px; font-size: 12.5px; color: rgba(255,255,255,.45); }
.eu { display: flex; align-items: center; gap: 14px; background: var(--white); border-radius: 10px; padding: 6px 10px; }
.eu img { height: 34px; width: auto; }
@media (max-width: 900px) { .footer-top { grid-template-columns: 1fr 1fr; } .footer-top > :first-child { grid-column: 1 / -1; } }

/* Nízké displeje notebooků (výška okna do 820 px): ještě úspornější svislé mezery */
@media (min-width: 981px) and (max-height: 820px) {
  :root { --section: clamp(48px, 6vw, 88px); }
  .section-head { margin-bottom: clamp(24px, 3vw, 40px); }
}

/* --------------------------------------------------------------------------
   Odhalování obsahu
   -------------------------------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .08s; }
.reveal[data-d="2"] { transition-delay: .16s; }
.reveal[data-d="3"] { transition-delay: .24s; }
.no-js .reveal { opacity: 1; transform: none; }
.hero .reveal, .specbar .reveal { opacity: 1; transform: none; transition: none; animation: rise .9s var(--ease) both; }
.hero .reveal[data-d="1"] { animation-delay: .08s; }
.hero .reveal[data-d="2"] { animation-delay: .16s; }
.hero .reveal[data-d="3"] { animation-delay: .24s; }
@keyframes rise { from { opacity: 0; transform: translateY(20px); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}