:root {
  --paper: #f4f8ff;
  --paper-strong: #e9f1ff;
  --white: #ffffff;
  --ink: #35455f;
  --ink-soft: #63718a;
  --blue: #315fc4;
  --blue-2: #4e78d3;
  --cyan: #19a4b3;
  --coral: #ef775d;
  --line: #cbd9f0;
  --mint: #dff6f2;
  --shadow: 0 18px 40px rgba(49, 95, 196, .10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 3px solid var(--coral); outline-offset: 4px; }
p, h1, h2, h3 { margin-top: 0; }
h1 { font-size: 40px; line-height: 1.08; letter-spacing: -.035em; color: var(--blue); }
h2 { font-size: 28px; line-height: 1.18; letter-spacing: -.025em; color: var(--blue); }
h3 { font-size: 19px; line-height: 1.3; color: var(--ink); }

.masthead {
  width: min(1180px, calc(100% - 48px));
  margin: 22px auto 0;
  padding: 13px 16px 13px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: rgba(255,255,255,.9);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 10px 34px rgba(49, 95, 196, .07);
  position: relative;
  z-index: 10;
}
.signature { display: inline-flex; align-items: center; gap: 12px; }
.signature > span:last-child { display: grid; line-height: 1.05; }
.signature strong { color: var(--blue); font-size: 17px; }
.signature small { color: var(--ink-soft); margin-top: 4px; }
.signature-mark {
  width: 42px; height: 42px; border-radius: 14px;
  background: var(--blue); display: flex; gap: 4px; align-items: flex-end; justify-content: center; padding: 9px;
}
.signature-mark i { display: block; width: 5px; border-radius: 4px; background: var(--white); }
.signature-mark i:nth-child(1) { height: 12px; }
.signature-mark i:nth-child(2) { height: 22px; background: #baf0eb; }
.signature-mark i:nth-child(3) { height: 16px; }
.mastnav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.mastnav a { padding: 9px 12px; border-radius: 999px; color: var(--ink-soft); font-weight: 700; font-size: 14px; }
.mastnav a:hover { background: var(--paper-strong); color: var(--blue); }

.opening {
  width: min(1180px, calc(100% - 48px));
  margin: 48px auto 0;
  min-height: 500px;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, .55fr);
  gap: 52px;
  align-items: center;
  position: relative;
}
.opening::before {
  content: ""; position: absolute; width: 290px; height: 290px; border-radius: 50%;
  border: 56px solid #dce9ff; right: 95px; top: 60px; z-index: -1;
}
.opening-copy { max-width: 700px; }
.eyebrow {
  color: var(--cyan); font-weight: 850; text-transform: uppercase; letter-spacing: .12em; font-size: 12px; margin-bottom: 15px;
}
.opening-lead { font-size: 21px; line-height: 1.5; max-width: 720px; }
.opening-copy > p:last-child { color: var(--ink-soft); max-width: 650px; }
.opening-register {
  background: var(--blue); color: var(--white); border-radius: 28px 28px 28px 8px; padding: 28px; box-shadow: var(--shadow);
}
.register-label { display: inline-block; font-weight: 800; color: #cbe3ff; margin-bottom: 24px; }
.opening-register div { display: grid; grid-template-columns: 54px 1fr; align-items: center; gap: 12px; padding: 14px 0; border-top: 1px solid rgba(255,255,255,.25); }
.opening-register strong { font-size: 24px; color: #baf0eb; }
.opening-register span { line-height: 1.25; }

.chapter {
  width: min(1180px, calc(100% - 48px));
  margin: 34px auto 0;
  padding: 64px 0 22px;
  position: relative;
  border-top: 1px solid var(--line);
}
.chapter-number {
  position: absolute; right: 0; top: 38px; font-size: 70px; line-height: 1; font-weight: 900; color: #d8e5fa; letter-spacing: -.06em;
}
.chapter-head { max-width: 760px; position: relative; z-index: 1; }
.chapter-head > p:last-child { color: var(--ink-soft); }
.chapter-head.compact { max-width: 650px; }

.local-composition { margin-top: 42px; display: grid; grid-template-columns: 1.15fr .85fr; gap: 20px; }
.place-feature, .place-pair article, .place-rail article, .local-tail {
  border: 1px solid var(--line); background: var(--white);
}
.place-feature { padding: 34px; border-radius: 28px; }
.place-centre { grid-row: span 2; min-height: 330px; display: flex; flex-direction: column; justify-content: flex-end; background: var(--blue); border-color: var(--blue); }
.place-centre .place-kicker, .place-centre h3, .place-centre p { color: var(--white); }
.place-centre .place-kicker { color: #baf0eb; }
.place-jagiellonska { border-radius: 28px 28px 8px 28px; }
.place-kicker { display: block; color: var(--cyan); font-weight: 850; font-size: 12px; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 12px; }
.place-feature p, .place-pair p, .place-rail p, .local-tail p { color: var(--ink-soft); margin-bottom: 0; }
.place-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; grid-column: 1 / -1; }
.place-pair article { padding: 26px; border-radius: 8px 24px 24px 24px; }
.place-pair article:last-child { border-radius: 24px 8px 24px 24px; }
.place-rail { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 4px solid var(--cyan); }
.place-rail article { padding: 22px; border-top: 0; border-bottom: 0; border-left: 0; }
.place-rail article:last-child { border-right: 0; }
.place-rail b { display: block; color: var(--blue); margin-bottom: 9px; }
.place-rail p { font-size: 14px; }
.local-tail { grid-column: 1 / -1; border-radius: 22px; padding: 0 26px; display: grid; grid-template-columns: repeat(3, 1fr); background: var(--mint); }
.local-tail > div { padding: 22px 20px; border-right: 1px solid #b9ddd9; }
.local-tail > div:last-child { border-right: 0; }

.appliance-ledger { margin-top: 42px; border-top: 1px solid var(--line); }
.appliance-ledger article { display: grid; grid-template-columns: 86px minmax(0, 1fr); gap: 24px; padding: 25px 0; border-bottom: 1px solid var(--line); align-items: start; }
.appliance-ledger article > span { font-size: 24px; font-weight: 900; color: var(--coral); letter-spacing: .05em; }
.appliance-ledger h3 { margin-bottom: 6px; }
.appliance-ledger p { margin-bottom: 0; color: var(--ink-soft); max-width: 760px; }
.service-note { margin: 32px 0 0 auto; width: min(720px, 100%); padding: 24px 28px; background: var(--paper-strong); border-left: 5px solid var(--coral); }
.service-note span { font-weight: 850; color: var(--blue); }
.service-note p { margin: 6px 0 0; color: var(--ink-soft); }

.fault-sequence { margin-top: 38px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.fault-sequence article { min-height: 250px; padding: 28px; border: 1px solid var(--line); border-radius: 24px; background: var(--white); position: relative; overflow: hidden; }
.fault-sequence strong { font-size: 54px; color: #dce7fa; position: absolute; right: 18px; top: 10px; }
.fault-sequence h3 { margin-top: 65px; }
.fault-sequence p { color: var(--ink-soft); }

.chapter-route { padding-bottom: 66px; display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: end; }
.route-copy { max-width: 720px; }
.route-copy p:last-child { color: var(--ink-soft); }
.route-link, .equipment-local > a { display: inline-flex; align-items: center; gap: 12px; background: var(--blue); color: var(--white); padding: 14px 18px; border-radius: 12px; font-weight: 850; }
.route-link:hover, .equipment-local > a:hover { background: var(--blue-2); }

.page-foot { width: min(1180px, calc(100% - 48px)); margin: 0 auto 28px; padding: 24px 0; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 24px; color: var(--ink-soft); }
.page-foot > div { display: flex; gap: 8px; }
.page-foot strong { color: var(--blue); }
.page-foot nav { display: flex; gap: 18px; }
.page-foot a:hover { color: var(--blue); }

/* home.html */
.equipment-main { width: min(1180px, calc(100% - 48px)); margin: 0 auto; position: relative; }
.equipment-intro { padding: 72px 0 56px; display: grid; grid-template-columns: 1fr 1fr; gap: 65px; align-items: end; border-bottom: 1px solid var(--line); }
.equipment-intro h1 { margin-bottom: 0; }
.equipment-lead { font-size: 19px; color: var(--ink-soft); margin-bottom: 0; }
.equipment-spine { position: absolute; left: 0; top: 305px; bottom: 90px; width: 72px; border-right: 1px solid var(--line); color: #b9c9e6; font-weight: 900; letter-spacing: .14em; }
.equipment-spine span { position: sticky; top: 24px; display: inline-block; writing-mode: vertical-rl; transform: rotate(180deg); }
.device-story, .repair-scope, .equipment-local { margin-left: 118px; padding: 64px 0; border-bottom: 1px solid var(--line); }
.device-story { display: grid; grid-template-columns: .8fr 1.2fr; gap: 54px; }
.device-code { display: block; color: var(--coral); font-weight: 900; font-size: 12px; letter-spacing: .13em; margin-bottom: 13px; }
.device-copy > p { color: var(--ink-soft); }
.device-copy dl { margin: 30px 0 0; }
.device-copy dl > div { display: grid; grid-template-columns: 100px 1fr; padding: 13px 0; border-top: 1px solid var(--line); }
.device-copy dt { color: var(--blue); font-weight: 850; }
.device-copy dd { margin: 0; color: var(--ink-soft); }
.symptom-band { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.symptom-band span { background: var(--white); border: 1px solid var(--line); padding: 9px 13px; border-radius: 999px; color: var(--blue); font-weight: 700; }
.kitchen-columns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.kitchen-columns article { background: var(--white); border: 1px solid var(--line); border-radius: 18px; padding: 22px; }
.kitchen-columns p { color: var(--ink-soft); margin-bottom: 0; }
.repair-scope { display: grid; grid-template-columns: .7fr 1.3fr; gap: 52px; }
.scope-lines p { margin: 0; padding: 17px 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 170px 1fr; gap: 18px; }
.scope-lines p:last-child { border-bottom: 1px solid var(--line); }
.scope-lines strong { color: var(--blue); }
.scope-lines span { color: var(--ink-soft); }
.equipment-local { display: grid; grid-template-columns: 1fr auto; gap: 42px; align-items: end; border-bottom: 0; padding-bottom: 82px; }
.equipment-local > div { max-width: 780px; }
.equipment-local p { color: var(--ink-soft); }

@media (max-width: 900px) {
  .opening { grid-template-columns: 1fr; min-height: auto; gap: 28px; }
  .opening::before { right: 8%; top: 120px; }
  .opening-register { max-width: 560px; }
  .local-composition { grid-template-columns: 1fr; }
  .place-centre { grid-row: auto; min-height: 280px; }
  .place-rail { grid-template-columns: 1fr 1fr; }
  .local-tail { grid-template-columns: 1fr; }
  .local-tail > div { border-right: 0; border-bottom: 1px solid #b9ddd9; }
  .local-tail > div:last-child { border-bottom: 0; }
  .fault-sequence { grid-template-columns: 1fr; }
  .chapter-route { grid-template-columns: 1fr; align-items: start; }
  .equipment-intro { grid-template-columns: 1fr; gap: 18px; }
  .equipment-spine { display: none; }
  .device-story, .repair-scope, .equipment-local { margin-left: 0; }
  .device-story { grid-template-columns: 1fr; gap: 24px; }
  .repair-scope { grid-template-columns: 1fr; gap: 24px; }
  .equipment-local { grid-template-columns: 1fr; align-items: start; }
}

@media (max-width: 680px) {
  h1 { font-size: 40px; }
  h2 { font-size: 28px; }
  .masthead, .opening, .chapter, .page-foot, .equipment-main { width: min(100% - 28px, 1180px); }
  .masthead { margin-top: 14px; align-items: flex-start; flex-direction: column; gap: 12px; border-radius: 18px; }
  .mastnav { justify-content: flex-start; }
  .mastnav a { padding: 7px 9px; }
  .opening { margin-top: 34px; }
  .opening::before { width: 190px; height: 190px; border-width: 35px; right: 0; top: 170px; }
  .opening-lead { font-size: 18px; }
  .opening-register { padding: 22px; border-radius: 22px 22px 22px 8px; }
  .chapter { padding-top: 58px; }
  .chapter-number { font-size: 52px; top: 34px; }
  .local-composition { margin-top: 30px; }
  .place-feature { padding: 24px; }
  .place-pair { grid-template-columns: 1fr; }
  .place-rail { grid-template-columns: 1fr; }
  .place-rail article { border-right: 0; border-bottom: 1px solid var(--line); }
  .place-rail article:last-child { border-bottom: 0; }
  .appliance-ledger article { grid-template-columns: 58px 1fr; gap: 14px; }
  .appliance-ledger article > span { font-size: 20px; }
  .fault-sequence article { min-height: 220px; }
  .page-foot { flex-direction: column; }
  .equipment-intro { padding-top: 52px; }
  .device-story, .repair-scope, .equipment-local { padding: 48px 0; }
  .device-copy dl > div, .scope-lines p { grid-template-columns: 1fr; gap: 5px; }
  .kitchen-columns { grid-template-columns: 1fr; }
}