:root {
  --paper: #f7f4ec;
  --paper-2: #efeadd;
  --white: #fffdf8;
  --ink: #1a2b5c;
  --ink-2: #2c3e70;
  --text: #22262f;
  --muted: #5d6270;
  --line: #d9d2c1;
  --orange: #e8731c;
  --orange-d: #c95e0f;

  --sans: "IBM Plex Sans", system-ui, sans-serif;
  --cond: "IBM Plex Sans Condensed", "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;

  --wrap: 1120px;
  --gut: clamp(16px, 4vw, 40px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--white);
  color: var(--text);
  font: 400 17px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--ink); }
h1, h2, h3 { font-family: var(--cond); color: var(--ink); line-height: 1.12; margin: 0 0 .5em; }
h1 { font-size: clamp(38px, 5.4vw, 62px); font-weight: 600; letter-spacing: -.015em; }
h2 { font-size: clamp(28px, 3.4vw, 40px); font-weight: 600; letter-spacing: -.01em; }
h3 { font-size: 20px; font-weight: 600; }
p { margin: 0 0 1em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gut); }

/* ---------- hlavička ---------- */
.top {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 253, 248, .94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.top__in { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand strong { display: block; font: 600 18px/1.1 var(--cond); }
.brand small { display: block; font: 400 13px/1.2 var(--mono); color: var(--muted); letter-spacing: .02em; }
.nav { display: flex; align-items: center; gap: 26px; font-size: 15px; }
.nav a { text-decoration: none; color: var(--text); }
.nav a:hover { color: var(--orange-d); }
.nav .nav__cta { color: var(--ink); font-weight: 500; border-bottom: 2px solid var(--orange); padding-bottom: 1px; }

/* ---------- hero ---------- */
.hero {
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(26, 43, 92, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 43, 92, .045) 1px, transparent 1px);
  background-size: 24px 24px;
  border-bottom: 1px solid var(--line);
}
.hero__in { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; align-items: center; padding-top: 72px; padding-bottom: 72px; }
.eyebrow { display: block; font: 500 13px/1.4 var(--mono); text-transform: uppercase; letter-spacing: .12em; color: var(--orange-d); margin-bottom: 20px; }
.lead { font-size: 19px; color: var(--text); max-width: 34em; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 22px; }
.hero__meta { font: 400 13.5px/1.5 var(--mono); color: var(--muted); margin: 0; }
.hero__img { margin: 0; }
.hero__img img { border-radius: 4px; box-shadow: 0 1px 0 var(--line), 0 18px 40px -24px rgba(26, 43, 92, .35); transform: rotate(.6deg); }

.btn {
  display: inline-block; padding: 13px 22px; border-radius: 3px;
  font: 500 16px/1 var(--sans); text-decoration: none; transition: background .15s, color .15s;
}
.btn--primary { background: var(--ink); color: #fff; }
.btn--primary:hover { background: var(--orange-d); }
.btn--ghost { color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--ink); }
.btn--ghost:hover { background: var(--ink); color: #fff; }

/* ---------- sekce ---------- */
.section { padding: 88px 0; }
.section--paper { background: var(--paper); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section__head { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-bottom: 32px; }
.section__head p { color: var(--muted); font: 400 14px/1.4 var(--mono); margin: 0; }

/* ---------- služby jako rozpočet ---------- */
.budget { border-top: 2px solid var(--ink); border-bottom: 2px solid var(--ink); }
.budget__row {
  display: grid; grid-template-columns: 56px 1fr 130px 56px; gap: 24px;
  padding: 22px 4px; border-top: 1px solid var(--line); align-items: baseline;
}
.budget__row:first-child { border-top: 0; }
.budget__row--head {
  padding: 10px 4px; font: 500 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .1em; color: var(--muted);
  background: var(--paper);
}
.budget__row h3 { margin-bottom: 6px; }
.budget__row h3 a { color: inherit; text-decoration: none; background-image: linear-gradient(var(--orange), var(--orange)); background-size: 0 2px; background-position: 0 100%; background-repeat: no-repeat; transition: background-size .2s; }
.budget__row h3 a:hover { background-size: 100% 2px; }
.budget__row h3 a::after { content: " →"; font-family: var(--mono); font-size: .8em; color: var(--orange-d); }
.budget__row p { margin: 0; color: var(--muted); max-width: 40em; }
.budget__no, .budget__mj, .budget__out { font: 400 15px/1.4 var(--mono); color: var(--ink); }
.budget__no { color: var(--orange-d); }
.budget__row:not(.budget__row--head):not(.budget__row--sum):hover { background: var(--paper); }
.budget__row--sum { background: var(--paper); padding: 16px 4px; }
.budget__row--sum strong { font: 600 18px/1.3 var(--cond); color: var(--ink); }
.budget__total { grid-column: 3 / 5; font: 500 14px/1.4 var(--mono); color: var(--ink); }

/* ---------- výkaz výměr ---------- */
.split { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: center; }
.split p { color: var(--text); max-width: 32em; }
.vv {
  margin: 0; background: var(--white); border: 1px solid var(--line); border-left: 3px solid var(--orange);
  font: 400 14px/1.5 var(--mono); box-shadow: 0 12px 30px -22px rgba(26, 43, 92, .4);
}
.vv__head { display: flex; justify-content: space-between; gap: 16px; padding: 14px 18px; border-bottom: 1px solid var(--line); color: var(--ink); font-weight: 500; }
.vv__mj { color: var(--orange-d); }
.vv__lines { padding: 10px 18px 14px; }
.vv__lines div { display: flex; justify-content: space-between; gap: 16px; padding: 5px 0; color: var(--muted); }
.vv__lines b { font-weight: 400; color: var(--text); white-space: nowrap; }
.vv__lines .vv__sum { border-top: 1px solid var(--ink); margin-top: 6px; padding-top: 9px; color: var(--ink); font-weight: 500; }
.vv__lines .vv__sum b { font-weight: 500; color: var(--ink); }

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

/* ---------- o mně ---------- */
.about { display: grid; grid-template-columns: 220px 1fr; gap: 56px; align-items: start; }
.about__label { font: 500 13px/1.4 var(--mono); text-transform: uppercase; letter-spacing: .12em; color: var(--orange-d); padding-top: 10px; border-top: 2px solid var(--ink); }
.about__text p { font-size: 19px; max-width: 36em; }
.about__text p:first-child { font: 500 clamp(22px, 2.4vw, 27px)/1.4 var(--cond); color: var(--ink); }
.about__sign { font: 400 14px/1.4 var(--mono); color: var(--muted); }

/* ---------- postup ---------- */
.section--ink { background: var(--ink); color: #dfe4f1; }
.section--ink h2, .section--ink h3 { color: #fff; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; counter-reset: s; }
.steps li { border-top: 1px solid rgba(255, 255, 255, .25); padding-top: 18px; }
.steps__no { display: block; font: 500 14px/1 var(--mono); color: var(--orange); margin-bottom: 14px; }
.steps p { margin: 0; font-size: 16px; color: #c4cbe0; }

/* ---------- otázky ---------- */
.split--faq { align-items: start; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 18px 32px 18px 0; position: relative;
  font: 600 19px/1.3 var(--cond); color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 16px; font: 400 22px/1 var(--mono); color: var(--orange-d); }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--muted); padding-right: 32px; }

/* ---------- kontakt ---------- */
.contact__in { display: grid; grid-template-columns: 1.3fr 1fr; gap: 56px; align-items: end; }
.contact__big { font: 500 clamp(20px, 2.4vw, 26px)/1.6 var(--mono); margin: 24px 0 0; }
.contact__big a { text-decoration: none; border-bottom: 2px solid var(--orange); }
.contact__big a:hover { color: var(--orange-d); }
.contact__id { display: grid; grid-template-columns: auto 1fr; gap: 8px 20px; margin: 0; font-size: 15px; border-top: 2px solid var(--ink); padding-top: 16px; }
.contact__id dt { font: 500 12px/1.9 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.contact__id dd { margin: 0; }

.foot { padding: 28px 0; font-size: 13.5px; color: var(--muted); }
.foot__in { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

a:focus-visible, summary:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; }

/* ---------- podstránky ---------- */
.page-hero {
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(26, 43, 92, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 43, 92, .045) 1px, transparent 1px);
  background-size: 24px 24px;
  border-bottom: 1px solid var(--line);
  padding: 36px 0 60px;
}
.page-hero h1 { font-size: clamp(34px, 4.6vw, 54px); max-width: 17em; }
.page-hero .lead { max-width: 38em; }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; font: 400 13px/1.4 var(--mono); color: var(--muted); margin-bottom: 36px; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--orange-d); }
.crumbs span[aria-current] { color: var(--ink); }

.page { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 64px; align-items: start; }
.prose { max-width: 40em; }
.prose h2 { font-size: clamp(24px, 2.6vw, 30px); margin-top: 1.6em; }
.prose h2:first-child { margin-top: 0; }
.prose ul { padding-left: 0; list-style: none; margin: 0 0 1em; }
.prose li { position: relative; padding-left: 22px; margin-bottom: .45em; }
.prose li::before { content: ""; position: absolute; left: 2px; top: .75em; width: 10px; height: 2px; background: var(--orange); }
.prose a { text-decoration-color: var(--orange); text-underline-offset: 3px; }
.checks { margin: 0 0 1em; border-top: 1px solid var(--line); }
.checks dt { font: 600 18px/1.3 var(--cond); color: var(--ink); padding-top: 16px; }
.checks dd { margin: 4px 0 0; padding-bottom: 16px; border-bottom: 1px solid var(--line); color: var(--text); }

.page__aside { position: sticky; top: 92px; }
.card { background: var(--paper); border: 1px solid var(--line); border-top: 3px solid var(--ink); padding: 22px 22px 24px; }
.card__title { font-size: 20px; margin-bottom: 14px; }
.card__list { list-style: none; margin: 0 0 16px; padding: 0; }
.card__list li { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 15px; line-height: 1.35; }
.card__list b { font: 400 13px/1.5 var(--mono); color: var(--orange-d); white-space: nowrap; }
.card__note { font-size: 14px; color: var(--muted); }
.card__btn { display: block; text-align: center; }

.section--tight { padding: 56px 0; border-top: 1px solid var(--line); }
.related__title { font-size: 22px; margin-bottom: 18px; }
.related__list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.related__item { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 18px 20px; border: 1px solid var(--line); text-decoration: none; font: 600 18px/1.25 var(--cond); color: var(--ink); transition: border-color .15s, background .15s; }
.related__item b { font: 400 16px/1 var(--mono); color: var(--orange-d); }
.related__item:hover { border-color: var(--ink); background: var(--paper); }

.foot__links { display: flex; flex-wrap: wrap; gap: 8px 28px; padding-bottom: 18px; margin-bottom: 18px; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.foot__links a { color: var(--ink); text-decoration: none; }
.foot__links a:hover { color: var(--orange-d); }

/* ---------- mobil ---------- */
@media (max-width: 900px) {
  .hero__in, .split, .contact__in { grid-template-columns: 1fr; gap: 36px; }
  .hero__in { padding-top: 44px; padding-bottom: 52px; }
  .hero__img img { transform: none; }
  .steps { grid-template-columns: 1fr 1fr; }
  .who { grid-template-columns: 1fr; }
  .about { grid-template-columns: 1fr; gap: 20px; }
  .page { grid-template-columns: 1fr; gap: 40px; }
  .page__aside { position: static; }
  .related__list { grid-template-columns: 1fr; }
  .who article, .who article + article { padding: 22px 0 6px; border-left: 0; }
  .who article + article { border-top: 1px solid var(--line); }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .nav a:not(.nav__cta) { display: none; }
  .section { padding: 60px 0; }
  .budget__row--head { display: none; }
  .budget__row { grid-template-columns: 40px 1fr; gap: 4px 12px; }
  .budget__out, .budget__mj { grid-column: 2; font-size: 13px; color: var(--muted); }
  .budget__out::before { content: "Výstup: "; }
  .budget__mj { display: none; }
  .budget__row--sum > span:first-child, .budget__row--sum > span:last-child { display: none; }
  .budget__row--sum { display: flex; justify-content: space-between; gap: 12px; padding: 16px 4px; }
  .steps { grid-template-columns: 1fr; gap: 24px; }
  .vv { font-size: 12.5px; }
  .vv__head, .vv__lines { padding-left: 12px; padding-right: 12px; }
  .brand small { display: none; }
}