:root {
  --ink: #0b2533;
  --deep: #073d59;
  --blue: #0c6f9e;
  --aqua: #37b7c8;
  --ice: #eef8fa;
  --paper: #ffffff;
  --sand: #f2eee5;
  --line: #cfe1e7;
  --shadow: 0 18px 60px rgba(7, 61, 89, .14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, #eaf9fd 0%, #ccecf7 38%, #eefaff 68%, #d4eff8 100%);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.6;
}
main { display: flex; flex-direction: column; background: radial-gradient(circle at 8% 18%, rgba(255,255,255,.72) 0 10%, transparent 27%), radial-gradient(circle at 92% 54%, rgba(65,183,213,.18) 0 12%, transparent 31%); }
/* Pełna kolejność strony głównej. Każde bezpośrednie dziecko main ma
   jawny numer, aby nowa sekcja nie wskoczyła przypadkiem przed ofertę. */
main > .hero { order: 1; }
main > .numbers { order: 2; }
main > #oferta { order: 3; }
main > #odbior { order: 4; }
main > #rodzaje { order: 5; }
main > #zastosowania { order: 6; }
main > #badania { order: 7; }
main > #dokumenty { order: 8; }
main > .experience { order: 9; }
main > #jak-kupic { order: 10; }
main > #porady { order: 11; }
main > #kontakt { order: 12; }
img { display: block; max-width: 100%; }
a { color: inherit; }
.shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: absolute; left: -9999px; top: 8px; padding: 10px 14px; background: #fff; z-index: 100; }
.skip-link:focus { left: 8px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid rgba(11,37,51,.1);
  backdrop-filter: blur(12px);
}
.nav-wrap { min-height: 80px; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; margin-right: auto; line-height: 1.1; }
.brand strong { display: block; font-size: 17px; }
.brand small { display: block; margin-top: 5px; color: #55717f; font-size: 12px; letter-spacing: .04em; }
.drop { color: var(--aqua); transform: rotate(45deg); font-size: 27px; }
nav { display: flex; gap: 24px; }
nav a { text-decoration: none; font-size: 14px; font-weight: 700; }
nav a:hover { color: var(--blue); }
.phone { text-decoration: none; font-weight: 800; }
.phone-top { background: var(--deep); color: #fff; border-radius: 999px; padding: 11px 18px; }

.hero { position: relative; overflow: hidden; background: linear-gradient(135deg, #dff5fc 0%, #bfe8f6 56%, #d8f2fa 100%); padding: 0 0 76px; }
.hero::before { content: ""; position: absolute; width: 520px; height: 520px; border: 1px solid rgba(12,111,158,.14); border-radius: 50%; left: -280px; top: -180px; }
.hero-grid { display: grid; grid-template-columns: 1fr; padding-top: 50px; }
.hero-copy { max-width: 1080px; }
.eyebrow { margin: 0 0 14px; color: var(--blue); text-transform: uppercase; font-size: 13px; font-weight: 800; letter-spacing: .13em; }
h1,h2,h3 { margin-top: 0; font-family: Georgia, 'Times New Roman', serif; line-height: 1.08; }
h1 { font-size: clamp(42px, 5.6vw, 76px); letter-spacing: -.035em; margin-bottom: 24px; }
h1 span { display: block; }
h1 .title-product { color: var(--ink); }
h1 .title-location { color: var(--blue); }
h2 { font-size: clamp(34px, 4.2vw, 54px); letter-spacing: -.025em; margin-bottom: 20px; }
h3 { font-size: 27px; }
.lead { max-width: 720px; font-size: 20px; line-height: 1.55; }
.hero-actions,.contact-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; border-radius: 6px; padding: 12px 21px; text-decoration: none; font-weight: 800; }
.button.primary { background: var(--deep); color: #fff; box-shadow: 0 10px 28px rgba(7,61,89,.2); }
.button.primary:hover { background: var(--blue); }
.button.secondary { border: 1px solid var(--deep); background: #fff; }
.micro { color: #4d6875; font-size: 13px; }
.search-note { margin: 8px 0 0; color: #4d6875; font-size: 13px; }
.hero-water-note { margin: 22px 0 0; padding: 18px 20px; background: rgba(255,255,255,.74); border-left: 5px solid var(--blue); border-radius: 6px; box-shadow: 0 10px 28px rgba(7,61,89,.09); font-size: 15px; line-height: 1.5; }
.hero-water-note strong { display: block; margin-bottom: 4px; color: var(--deep); font-size: 17px; }
.trust-list { display: flex; flex-wrap: wrap; gap: 9px 24px; padding: 0; margin: 28px 0 0; list-style: none; font-weight: 700; font-size: 14px; }
.trust-list li::before { content: "✓"; color: var(--aqua); margin-right: 7px; }
.hero-photo { position: relative; margin: 0; }
.hero-banner { width: 100%; background: #9ed5e8; }
.hero-banner img { display: block; width: 100%; height: auto; border: 0; border-radius: 0; box-shadow: 0 12px 34px rgba(7,61,89,.18); }
.hero-photo figcaption, .route-photo figcaption { margin: 10px auto 0; width: min(1180px, calc(100% - 40px)); color: #496a78; font-size: 12px; }

.numbers { background: var(--deep); color: #fff; }
.numbers-grid { display: grid; grid-template-columns: repeat(3,1fr); }
.numbers-grid div { padding: 28px 18px; border-right: 1px solid rgba(255,255,255,.16); text-align: center; }
.numbers-grid div:last-child { border-right: 0; }
.numbers strong { display: block; font-family: Georgia,serif; font-size: 27px; }
.numbers span { color: #bce0e8; font-size: 13px; }

.pickup { background: linear-gradient(145deg, rgba(255,255,255,.92), rgba(208,239,248,.94)); }
.pickup-gallery { display: grid; grid-template-columns: 1.45fr .78fr .78fr; gap: 18px; align-items: stretch; }
.pickup-gallery figure { margin: 0; display: flex; flex-direction: column; }
.pickup-gallery img { width: 100%; height: 420px; object-fit: cover; border-radius: 8px; box-shadow: var(--shadow); }
.pickup-gallery figure:not(.pickup-main) img { object-position: center; }
.pickup-gallery figcaption { margin-top: 10px; color: #5a727e; font-size: 12px; }
.pickup-note { margin: 30px 0 0; padding: 20px 24px; border-left: 4px solid var(--aqua); background: var(--ice); }
.pickup-note a { font-weight: 900; }

.section { padding: 82px 0; }
#oferta { background: linear-gradient(135deg, rgba(222,246,252,.92), rgba(185,229,242,.84)); }
.section-head { max-width: 780px; margin: 0 auto 46px; text-align: center; }
.section-head.narrow { max-width: 560px; }
.offer-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.offer-card { padding: 40px; border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); }
.offer-card.dark { background: var(--deep); color: #fff; }
.tag { display: inline-block; margin-bottom: 22px; border-radius: 999px; padding: 6px 12px; background: var(--ice); color: var(--blue); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; }
.dark .tag { background: rgba(255,255,255,.12); color: #ccecf1; }
.price { margin: 28px 0 0; }
.price strong { font-family: Georgia,serif; font-size: 42px; }
.price-call strong { font-size: 31px; line-height: 1.12; }
.price-note { margin-top: 0; color: #4f6c79; }
.value-note { margin: 18px 0 0; padding: 16px 18px; background: #e2f5fa; border: 1px solid #b9e2ed; border-radius: 6px; font-size: 14px; }
.value-note strong { color: var(--deep); font-size: 16px; }
.bulk-discount { margin: 20px 0; padding: 16px 18px; background: var(--ice); border-left: 4px solid var(--aqua); font-size: 14px; }
.dark .price-note { color: #c2dce3; }
.bulk-tier { margin: 20px 0; padding: 16px 18px; background: rgba(255,255,255,.12); border-left: 4px solid #7dd5df; font-size: 14px; }
.offer-card ul { padding-left: 20px; margin: 28px 0; }
.offer-card a { font-weight: 800; text-underline-offset: 4px; }
.notice { margin: 28px 0 0; padding: 20px 24px; background: var(--sand); border-left: 4px solid #d4a452; }

.uses { background: linear-gradient(135deg, #c5eaf5 0%, #edfaff 52%, #b9e3f1 100%); }
.uses-grid { display: grid; grid-template-columns: 1.1fr .7fr; gap: 70px; align-items: center; }
.lead-small { font-size: 18px; }
.use-list { margin-top: 42px; display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.use-list > div { display: grid; grid-template-columns: 36px 1fr; gap: 12px; border-top: 1px solid #bcd8df; padding-top: 16px; }
.use-list span { color: var(--blue); font-weight: 800; font-size: 13px; }
.use-list p { margin: 0; font-size: 14px; }
.tall-photo { margin: 0; }
.tall-photo img { width: 100%; aspect-ratio: .78; object-fit: cover; border-radius: 8px; box-shadow: var(--shadow); }

.experience { background: linear-gradient(120deg, #a9dcea 0%, #dff5fb 58%, #c5eaf4 100%); }
.experience-grid { display: grid; grid-template-columns: .55fr 1.1fr; gap: 80px; align-items: center; max-width: 960px; }
.experience-number { font-family: Georgia,serif; font-size: clamp(150px,22vw,260px); line-height: .75; color: var(--deep); letter-spacing: -.08em; }
.signature { margin-top: 26px; font-family: Georgia,serif; font-size: 22px; }
.signature span { display: block; font-family: Arial,sans-serif; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .15em; }

.tests { background: linear-gradient(150deg, #e9f9fd 0%, #c9ebf5 100%); }
.test-results { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin-bottom: 34px; }
.test-results div { padding: 22px 16px; text-align: center; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.test-results strong { display: block; color: var(--deep); font-family: Georgia,serif; font-size: 22px; }
.test-results span { display: block; margin-top: 6px; color: #55717f; font-size: 12px; line-height: 1.35; }
.report-pages { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 920px; margin: 0 auto; }
.report-pages figure { margin: 0; }
.report-pages a { display: block; background: #fff; border-radius: 8px; box-shadow: var(--shadow); overflow: hidden; }
.report-pages img { width: 100%; height: auto; }
.report-pages figcaption { margin-top: 10px; color: #55717f; font-size: 12px; text-align: center; }
.report-note { max-width: 920px; margin: 28px auto 0; padding: 20px 24px; border-left: 4px solid #d4a452; background: #fff; }
.report-details { max-width: 920px; margin: 0 auto; }
.report-details summary { cursor: pointer; padding: 18px 22px; background: #fff; border: 1px solid var(--line); border-radius: 8px; color: var(--deep); font-weight: 800; }
.report-details[open] summary { margin-bottom: 22px; }
.technology-box { display: grid; grid-template-columns: .9fr 1.1fr; gap: 36px; margin: 0 auto 28px; padding: 34px; background: var(--deep); color: #fff; border-radius: 8px; }
.technology-box .eyebrow { color: #7dd5df; }
.technology-box h3 { margin-bottom: 16px; }
.technology-box p { margin-top: 0; }
.technology-points p { padding: 0 0 14px 22px; border-bottom: 1px solid rgba(255,255,255,.16); position: relative; }
.technology-points p::before { content: "✓"; position: absolute; left: 0; color: #7dd5df; font-weight: 900; }
.technology-caution { margin: 0 auto 34px; padding: 20px 24px; background: #fff; border-left: 4px solid var(--aqua); }
.technical-sources { max-width: 920px; margin: 16px auto 0; color: #55717f; font-size: 12px; }
.technical-sources a { font-weight: 700; }

.recipes { background: linear-gradient(135deg, rgba(255,255,255,.94), rgba(210,240,248,.92)); }
.recipe-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.recipe-card { position: relative; padding: 34px; border: 1px solid var(--line); border-radius: 8px; background: linear-gradient(145deg,#fff,#f4fafb); }
.recipe-card h3 { padding-right: 48px; }
.recipe-no { position: absolute; right: 28px; top: 26px; color: #90bac6; font-weight: 900; letter-spacing: .08em; }
.recipe-warning { margin: 22px 0 0; padding-top: 18px; border-top: 1px solid var(--line); color: #4d6875; font-size: 13px; }
.advice-note { margin: 28px 0 0; padding: 22px 26px; background: var(--deep); color: #fff; border-radius: 8px; }

.steps { max-width: 960px; margin: 0 auto; padding: 0; list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; counter-reset: steps; }
#jak-kupic { background: linear-gradient(145deg, #d5f0f8, #edfaff); }
.steps li { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 25px; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.steps li > span { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; background: var(--deep); color: #fff; font-weight: 800; }
.steps p { margin: 4px 0 0; font-size: 14px; }

.contact { background: var(--deep); color: #fff; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.contact .eyebrow { color: #7dd5df; }
.contact-card address { font-style: normal; margin: 28px 0; }
.contact dl { margin: 0; }
.contact dl div { display: grid; grid-template-columns: 160px 1fr; padding: 10px 0; border-top: 1px solid rgba(255,255,255,.15); }
.contact dt { color: #a8ccd5; }
.contact dd { margin: 0; font-weight: 700; }
.contact dd small { display: block; color: #a8ccd5; font-weight: 400; }
.contact .button.primary { background: #fff; color: var(--deep); }
.contact .button.secondary { border-color: #fff; background: transparent; color: #fff; }
.access-panel { padding: 48px; border: 1px solid rgba(255,255,255,.24); border-radius: 8px; background: linear-gradient(145deg,rgba(255,255,255,.12),rgba(255,255,255,.04)); box-shadow: 0 22px 70px rgba(0,0,0,.2); }
.access-photo { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; margin: -22px 0 32px; border-radius: 6px; }
.access-panel ul { padding-left: 20px; }
.access-callout { margin: 26px 0 0; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.2); }
.access-callout a { font-weight: 900; }
.truck-mark { width: 92px; height: 50px; margin-bottom: 30px; position: relative; border: 4px solid #7dd5df; border-radius: 4px 14px 4px 4px; }
.truck-mark::before,.truck-mark::after { content: ""; position: absolute; bottom: -13px; width: 18px; height: 18px; border-radius: 50%; background: #fff; border: 4px solid var(--deep); }
.truck-mark::before { left: 9px; }
.truck-mark::after { right: 9px; }
.truck-mark span { position: absolute; left: -30px; top: 18px; width: 22px; height: 4px; background: #7dd5df; box-shadow: -12px -10px 0 #7dd5df, -12px 10px 0 #7dd5df; }

footer { padding: 28px 0 80px; background: #052d42; color: #d4e5e9; font-size: 13px; }
.footer-grid { display: flex; justify-content: space-between; align-items: end; gap: 40px; }
.footer-grid p { margin: 0; }
.mobile-call { display: none; }

.subpage-main { display: block; }
.breadcrumb { padding: 18px 0; color: #55717f; font-size: 14px; }
.breadcrumb a { color: var(--blue); font-weight: 700; }
.subpage-hero { padding: 66px 0 74px; background: linear-gradient(135deg,#dff5fc,#bfe8f6 58%,#eaf9fd); }
.subpage-hero h1 { max-width: 980px; }
.subpage-hero .lead { max-width: 850px; }
.subpage-facts { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; margin-top: 34px; }
.subpage-facts div { padding: 18px; background: rgba(255,255,255,.82); border: 1px solid var(--line); border-radius: 8px; }
.subpage-facts strong { display: block; color: var(--deep); }
.content-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 60px; align-items: start; }
.document-grid { margin-top: 1.25rem; }
.content-grid h2 { font-size: clamp(32px,3.7vw,48px); }
.spec-list { margin: 28px 0 0; padding: 0; list-style: none; }
.spec-list li { position: relative; padding: 15px 0 15px 31px; border-top: 1px solid var(--line); }
.spec-list li::before { content: "✓"; position: absolute; left: 2px; color: var(--blue); font-weight: 900; }
.info-panel { padding: 34px; background: var(--deep); color: #fff; border-radius: 8px; box-shadow: var(--shadow); }
.info-panel h2 { font-size: 34px; }
.info-panel .eyebrow { color: #7dd5df; }
.info-panel a { font-weight: 800; }
.page-prices { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.page-prices article { padding: 28px; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.page-prices strong { display: block; color: var(--deep); font-family: Georgia,serif; font-size: 32px; }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.faq-grid details { padding: 20px 22px; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.faq-grid summary { cursor: pointer; color: var(--deep); font-weight: 800; }
.faq-grid p { margin-bottom: 0; }
.related-link { display: inline-block; margin-top: 18px; color: var(--blue); font-weight: 800; }

/* Czytelny tryb poradnika — wzorzec dla rozbudowanych podstron */
.reader-layout {
  background: #eaf3f5;
  color: #17333f;
  font-size: 18px;
}
.reader-layout .subpage-main {
  background: linear-gradient(180deg, #eaf3f5 0%, #f4f7f5 38%, #e8f1f3 100%);
}
.reader-layout .breadcrumb {
  padding-top: 14px;
  padding-bottom: 14px;
}
.route-nav {
  display: flex;
  min-height: 50px;
  align-items: center;
  gap: 9px;
}
.route-back {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--blue);
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  text-decoration: underline;
  cursor: pointer;
}
.route-back::after { content: " /"; color: #55717f; text-decoration: none; }
.reader-layout .subpage-hero {
  display: flex;
  min-height: calc(100svh - 130px);
  align-items: center;
  padding: 48px 0 52px;
  background:
    radial-gradient(circle at 88% 18%, rgba(104, 181, 198, .22), transparent 28%),
    linear-gradient(135deg, #f4faf9 0%, #d7e9ec 55%, #e8f2f3 100%);
  border-bottom: 1px solid rgba(9, 65, 84, .10);
}
.reader-layout .subpage-hero h1 {
  max-width: 1060px;
  margin-bottom: 18px;
  font-size: clamp(38px, 4.7vw, 64px);
}
.reader-layout .subpage-hero .lead {
  max-width: 960px;
  margin-bottom: 0;
  color: #294b58;
  font-size: 19px;
}
.reader-layout .subpage-facts {
  display: none;
}
.reader-layout .subpage-facts div {
  padding: 15px 17px;
  border-color: rgba(19, 84, 104, .13);
  border-radius: 14px;
  background: rgba(255, 255, 255, .70);
  box-shadow: 0 8px 22px rgba(18, 69, 85, .06);
}
.reader-layout .button { border-radius: 12px; }
.buying-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr) auto;
  gap: 0;
  margin-top: 26px;
  overflow: hidden;
  border: 1px solid rgba(16, 78, 96, .14);
  border-radius: 16px;
  background: rgba(255, 255, 255, .76);
  box-shadow: 0 9px 24px rgba(18, 66, 81, .06);
}
.buying-card,
.buying-contact {
  min-height: 138px;
  padding: 18px 19px;
  border: 0;
  border-right: 1px solid rgba(16, 78, 96, .13);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.buying-card strong {
  display: block;
  margin: 5px 0 6px;
  color: #0b4d66;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 24px;
  line-height: 1.1;
}
.buying-card p { margin: 0; color: #3f5d68; font-size: 13px; line-height: 1.42; }
.buying-label { color: #55747e; font-size: 10px; font-weight: 900; letter-spacing: .11em; text-transform: uppercase; }
.buying-contact {
  display: flex;
  min-width: 190px;
  flex-direction: column;
  justify-content: center;
  border-right: 0;
  background: linear-gradient(145deg, #0c5871, #0a4057);
  color: #fff;
  text-align: center;
}
.buying-contact span { color: #c7e2e8; font-size: 11px; }
.buying-contact a { margin-top: 8px; color: #fff; font-size: 17px; font-weight: 900; text-decoration: none; }
.reader-layout .subpage-hero .buying-summary + .hero-actions { margin-top: 16px; }

.reader-nav {
  position: sticky;
  top: 80px;
  z-index: 24;
  border-bottom: 1px solid rgba(8, 61, 89, .12);
  background: rgba(247, 250, 249, .96);
  box-shadow: 0 10px 25px rgba(28, 69, 80, .07);
  backdrop-filter: blur(14px);
}
.reader-nav-inner { position: relative; }
.reader-menu-button {
  display: none;
  width: 100%;
  padding: 12px 2px;
  border: 0;
  background: transparent;
  color: var(--ink);
  text-align: left;
}
.reader-menu-button span { display: block; color: #627983; font-size: 11px; text-transform: uppercase; letter-spacing: .11em; }
.reader-menu-button strong { display: block; margin-top: 2px; font-size: 15px; }
.reader-sections {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 3px;
  padding: 9px 0 11px;
}
.reader-sections button {
  padding: 8px 11px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: #385764;
  cursor: pointer;
  font-family: inherit;
  font-size: 12px;
  font-weight: 750;
  line-height: 1.15;
  text-align: center;
  text-decoration: none;
  transition: background .2s ease, color .2s ease;
}
.reader-sections button:hover,
.reader-sections button.active {
  background: #dcebed;
  color: #064d69;
}
.reader-progress { position: absolute; right: 0; bottom: 0; left: 0; height: 3px; overflow: hidden; border-radius: 99px; background: #d9e5e7; }
.reader-progress span { display: block; width: 12.5%; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #237c98, #54aeb8); transition: width .25s ease; }

.reader-layout .reader-chapter {
  scroll-margin-top: 145px;
  padding: 34px 0 0;
  background: transparent;
}
.reader-paged .reader-chapter[hidden] { display: none !important; }
.reader-paged .reader-chapter.active {
  display: flex;
  min-height: calc(100svh - 130px);
  align-items: center;
  animation: reader-page-in .28s ease both;
}
.reader-paged .reader-chapter.active > .shell { flex: 0 0 auto; }
.reader-paged article {
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(18, 79, 96, .12);
}
@keyframes reader-page-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.reader-layout .reader-chapter > .shell {
  position: relative;
  padding: 42px 44px 24px;
  border: 1px solid rgba(18, 79, 96, .12);
  border-radius: 18px;
  background: rgba(255, 255, 255, .82);
  box-shadow: 0 16px 42px rgba(29, 71, 82, .075);
}
.reader-layout .reader-chapter:nth-of-type(even) > .shell {
  background: linear-gradient(145deg, rgba(242, 248, 247, .96), rgba(229, 240, 242, .92));
}
.reader-layout .reader-chapter .content-grid { gap: 42px; }
.reader-layout .reader-chapter h2 {
  color: #123c4b;
  font-size: clamp(28px, 3.15vw, 42px);
  line-height: 1.12;
}
.reader-layout .reader-chapter p { max-width: 72ch; }
.reader-layout .reader-chapter p,
.reader-layout .reader-chapter li { font-size: 18px; line-height: 1.7; }
.reader-layout .reader-chapter .info-panel {
  padding: 30px;
  border: 0;
  border-left: 4px solid #4298aa;
  border-radius: 0;
  background: #e3eff0;
  box-shadow: none;
  color: #173844;
}
.reader-layout .reader-chapter .info-panel .eyebrow { color: #176f89; }
.reader-layout .reader-chapter .info-panel h2 { color: #123c4b; }
.reader-layout .reader-chapter .notice {
  border-radius: 12px;
  background: #f5f0e4;
}
.reader-layout .reader-chapter .faq-grid details {
  border: 0;
  border-top: 1px solid rgba(18, 79, 96, .17);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.chapter-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid rgba(18, 79, 96, .12);
}
.chapter-link {
  display: flex;
  min-height: 66px;
  flex-direction: column;
  justify-content: center;
  padding: 11px 15px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: #214a59;
  cursor: pointer;
  font-family: inherit;
  text-decoration: none;
  transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}
.chapter-link:hover { transform: translateY(-2px); background: transparent; box-shadow: none; color: #08789a; }
.chapter-link.next { text-align: right; }
.chapter-link span { color: #607b85; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }
.chapter-link strong { margin-top: 3px; font-size: 14px; }
.reader-layout article + .contact { margin-top: 36px; }
.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 35;
  display: flex;
  min-width: 106px;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 14px;
  border: 1px solid rgba(255, 255, 255, .52);
  border-radius: 999px;
  background: rgba(7, 61, 89, .92);
  box-shadow: 0 10px 28px rgba(7, 44, 59, .22);
  color: #fff;
  opacity: 0;
  pointer-events: none;
  text-decoration: none;
  transform: translateY(12px);
  transition: opacity .2s ease, transform .2s ease, background .2s ease;
  backdrop-filter: blur(10px);
}
.back-to-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-to-top:hover { background: #0b7194; }
.back-to-top span { font-size: 21px; line-height: 1; }
.back-to-top strong { font-size: 12px; }

@media (max-width: 920px) {
  nav { display: none; }
  .hero-grid,.uses-grid,.contact-grid { grid-template-columns: 1fr; }
  .offer-grid { grid-template-columns: 1fr; }
  .subpage-facts,.page-prices { grid-template-columns: 1fr 1fr; }
  .content-grid { grid-template-columns: 1fr; }
  .pickup-gallery { grid-template-columns: 1fr 1fr; }
  .pickup-main { grid-column: 1 / -1; }
  .hero-photo { max-width: none; }
  .uses-grid { gap: 45px; }
  .tall-photo { max-width: 580px; }
  .numbers-grid { grid-template-columns: 1fr 1fr 1fr; }
  .test-results { grid-template-columns: 1fr 1fr; }
  .numbers-grid div:nth-child(2) { border-right: 1px solid rgba(255,255,255,.16); }
  .reader-nav { top: 80px; }
  .reader-menu-button { display: block; }
  .reader-sections {
    display: none;
    position: absolute;
    top: calc(100% - 3px);
    right: 0;
    left: 0;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    padding: 10px;
    border: 1px solid rgba(8, 61, 89, .12);
    border-radius: 0 0 15px 15px;
    background: #f8fbfa;
    box-shadow: 0 18px 30px rgba(20, 57, 69, .12);
  }
  .reader-sections.open { display: grid; }
  .reader-sections button { text-align: left; }
  .reader-layout .reader-chapter > .shell { padding: 34px 30px 22px; }
  .buying-summary { grid-template-columns: 1fr 1fr; }
  .buying-contact { min-height: 92px; }
  .buying-card:nth-child(2) { border-right: 0; }
  .buying-card:nth-child(3), .buying-contact { border-top: 1px solid rgba(16, 78, 96, .13); }
}

@media (max-width: 680px) {
  body { font-size: 16px; padding-bottom: 62px; }
  .shell { width: min(100% - 28px, 1180px); }
  .site-header { position: static; }
  .nav-wrap { min-height: 68px; }
  .brand strong { font-size: 14px; }
  .brand small,.phone-top { display: none; }
  .hero { padding: 0 0 54px; }
  .hero-grid { padding-top: 36px; }
  h1 { font-size: 42px; }
  h2 { font-size: 36px; }
  .lead { font-size: 18px; }
  .hero-actions .button { width: 100%; }
  .hero-grid { gap: 36px; }
  .trust-list { display: grid; }
  .numbers-grid { grid-template-columns: 1fr; }
  .numbers-grid div { padding: 22px 8px; }
  .numbers-grid div { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.16); }
  .numbers-grid div:last-child { border-bottom: 0; }
  .numbers strong { font-size: 23px; }
  .section { padding: 56px 0; }
  .offer-grid,.use-list,.steps,.experience-grid,.recipe-grid { grid-template-columns: 1fr; }
  .subpage-facts,.page-prices,.faq-grid { grid-template-columns: 1fr; }
  .pickup-gallery { grid-template-columns: 1fr; }
  .pickup-main { grid-column: auto; }
  .pickup-gallery img { height: auto; aspect-ratio: 4 / 3; }
  .report-pages,.test-results,.technology-box { grid-template-columns: 1fr; }
  .offer-card { padding: 28px 22px; }
  .experience-grid { gap: 38px; }
  .experience-number { font-size: 160px; }
  .contact dl div { grid-template-columns: 1fr; gap: 2px; }
  .contact-actions .button { width: 100%; }
  .access-panel { padding: 32px 24px; }
  .footer-grid { display: grid; }
  .mobile-call { display: flex; position: fixed; z-index: 40; left: 0; right: 0; bottom: 0; height: 62px; align-items: center; justify-content: center; background: #0a739f; color: #fff; font-weight: 900; text-decoration: none; box-shadow: 0 -6px 20px rgba(0,0,0,.2); }
  .reader-layout .site-header { position: sticky; top: 0; }
  .reader-nav { top: 68px; }
  .reader-layout .subpage-hero { padding: 36px 0 38px; }
  .reader-layout .subpage-hero { min-height: auto; }
  .reader-paged .reader-chapter.active { min-height: auto; align-items: stretch; }
  .reader-layout .subpage-hero h1 { font-size: 38px; }
  .reader-layout .subpage-hero .lead { font-size: 17px; }
  .buying-summary { grid-template-columns: 1fr; }
  .buying-card { min-height: 0; padding: 16px 17px; }
  .buying-contact { min-height: 78px; }
  .buying-card { border-right: 0; border-bottom: 1px solid rgba(16, 78, 96, .13); }
  .buying-card:nth-child(3) { border-bottom: 0; }
  .reader-layout .reader-chapter { scroll-margin-top: 130px; padding-top: 18px; }
  .reader-layout .reader-chapter > .shell { width: min(100% - 20px, 1180px); padding: 28px 20px 18px; border-radius: 17px; }
  .reader-layout .reader-chapter h2 { font-size: 30px; }
  .reader-layout .reader-chapter .info-panel { padding: 24px 20px; }
  .chapter-pager { gap: 8px; margin-top: 26px; }
  .chapter-link { min-height: 72px; padding: 10px; }
  .chapter-link strong { font-size: 12px; }
  .back-to-top { right: 12px; bottom: 74px; min-width: 48px; width: 48px; height: 48px; padding: 0; }
  .back-to-top strong { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* Czytelna nawigacja całej witryny i blok zakupu */
@view-transition { navigation: auto; }

.breadcrumb {
  display: flex;
  min-height: 54px;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 12px;
  padding-bottom: 8px;
  color: #344f5b;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.35;
}
.breadcrumb a { color: #075f7d; text-decoration-thickness: 2px; text-underline-offset: 3px; }
.breadcrumb strong { color: #102f3c; }

.page-route-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding-top: 4px;
  padding-bottom: 18px;
}
.page-route-actions.home-route-actions { grid-template-columns: minmax(240px, 380px); justify-content: center; }
.route-action {
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border: 2px solid #0b607a;
  border-radius: 12px;
  background: #fff;
  color: #0b4c63;
  cursor: pointer;
  font: 800 17px/1.25 inherit;
  text-align: center;
  text-decoration: none;
}
.route-action:hover, .route-action:focus-visible { background: #e7f3f4; outline: 3px solid #f0b43c; outline-offset: 2px; }
.route-action.route-primary { border-color: #075e64; background: #075e64; color: #fff; }
.route-action.route-primary:hover { background: #064b50; }

.purchase-panel {
  width: min(100% - 40px, 1180px);
  margin: 24px auto 30px;
  overflow: hidden;
  border: 2px solid #176a76;
  border-radius: 18px;
  background: #f8f4e9;
  box-shadow: 0 14px 35px rgba(19, 65, 75, .10);
  color: #173945;
}
.subpage-hero .purchase-panel, .hero .purchase-panel { width: 100%; margin: 24px 0 26px; }
.purchase-heading { padding: 22px 26px 14px; background: #e6f1f0; }
.purchase-heading .eyebrow { margin-bottom: 4px; }
.purchase-heading h2 { margin: 0; color: #123c4b; font-size: clamp(27px, 3vw, 38px); }
.purchase-price-list { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid #b5ced0; border-bottom: 1px solid #b5ced0; background: #fff; }
.purchase-price-list div { display: flex; min-height: 104px; flex-direction: column; justify-content: center; padding: 16px 20px; border-right: 1px solid #c8d9da; }
.purchase-price-list div:last-child { border-right: 0; }
.purchase-price-list strong { color: #073d59; font-size: clamp(23px, 2.25vw, 32px); line-height: 1.1; }
.purchase-price-list span { margin-top: 7px; color: #405b64; font-size: 16px; font-weight: 750; }
.purchase-details { display: grid; grid-template-columns: 1fr 1fr; gap: 0 32px; padding: 19px 26px 8px; }
.purchase-details p { margin: 0; padding: 10px 0; border-bottom: 1px solid rgba(23, 106, 118, .15); font-size: 17px; line-height: 1.5; }
.purchase-details .heating-container-note { grid-column: 1 / -1; padding: 15px 18px; border: 1px solid #d6ba72; border-radius: 10px; background: #fff8e7; }
.purchase-actions { display: flex; gap: 14px; padding: 17px 26px 24px; }
.purchase-actions .button { min-height: 58px; flex: 1 1 0; font-size: 18px; }

.book-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  padding-top: 38px;
  padding-bottom: 38px;
}
.related-topics { padding: 56px 0 10px; background: #eaf4f4; border-top: 1px solid #c5dada; }
.related-topics h2 { margin-bottom: 24px; font-size: clamp(30px, 3.3vw, 44px); }
.related-topics-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.related-topics-grid a { display: flex; min-height: 148px; flex-direction: column; padding: 22px; border: 2px solid #b7d0d2; border-radius: 14px; background: #fff; color: #123f4d; text-decoration: none; }
.related-topics-grid a:hover, .related-topics-grid a:focus-visible { border-color: #087998; box-shadow: 0 10px 24px rgba(9,75,86,.14); outline: 3px solid #f0b43c; outline-offset: 2px; }
.related-topics-grid span { color: #55717f; font-size: 14px; font-weight: 750; }
.related-topics-grid strong { margin: 8px 0 16px; font-size: 19px; line-height: 1.3; }
.related-topics-grid b { margin-top: auto; color: #075f7d; font-size: 15px; }
.book-page {
  display: flex;
  min-height: 78px;
  flex-direction: column;
  justify-content: center;
  padding: 14px 22px;
  border: 2px solid #0a6572;
  border-radius: 14px;
  background: #fff;
  color: #124655;
  text-decoration: none;
}
.book-page.next { background: #075e64; color: #fff; text-align: right; }
.book-page:hover, .book-page:focus-visible { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(9, 75, 86, .17); outline: 3px solid #f0b43c; outline-offset: 2px; }
.book-page span { font-size: 16px; font-weight: 750; }
.book-page strong { margin-top: 5px; font-size: 19px; }
.book-page.empty { visibility: hidden; }

.toc-dialog {
  width: min(1120px, calc(100% - 28px));
  max-height: min(94vh, 960px);
  padding: 0;
  border: 0;
  border-radius: 18px;
  background: #f8fbfa;
  box-shadow: 0 28px 90px rgba(0, 25, 38, .38);
  color: #173945;
}
.toc-dialog::backdrop { background: rgba(5, 33, 44, .72); }
.toc-dialog-head { position: sticky; top: 0; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 20px; border-bottom: 2px solid #bdd3d4; background: #e5f0ef; }
.toc-dialog-head h2 { margin: 0; font-size: 27px; }
.toc-dialog-head button { min-height: 48px; padding: 8px 15px; border: 2px solid #0b607a; border-radius: 10px; background: #fff; color: #0b4c63; cursor: pointer; font: 800 16px inherit; }
.toc-groups { display: grid; grid-template-columns: .8fr 2.1fr .8fr; gap: 18px; padding: 18px 20px 20px; }
.toc-groups h3 { margin: 0 0 7px; color: #123c4b; font-size: 19px; }
.toc-groups a { display: flex; min-height: 42px; align-items: center; justify-content: space-between; gap: 8px; padding: 7px 9px; border-bottom: 1px solid #cadbdb; color: #124f65; font-size: 14.5px; font-weight: 700; line-height: 1.2; text-decoration: none; }
.toc-groups section:nth-child(2) { display: grid; grid-template-columns: 1fr 1fr; align-content: start; column-gap: 12px; }
.toc-groups section:nth-child(2) h3 { grid-column: 1 / -1; }
.toc-groups a:hover, .toc-groups a[aria-current="page"] { background: #dceced; color: #073d59; }
.toc-groups a[aria-current="page"] { border-left: 5px solid #087998; }

@media (max-width: 920px) {
  .purchase-price-list { grid-template-columns: 1fr 1fr; }
  .purchase-price-list div:nth-child(2) { border-right: 0; }
  .purchase-price-list div:nth-child(-n+2) { border-bottom: 1px solid #c8d9da; }
  .toc-groups { grid-template-columns: 1fr 1fr; }
  .toc-groups section:nth-child(2) { display: block; }
  .related-topics-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  .breadcrumb { width: min(100% - 24px, 1180px); min-height: 50px; font-size: 15px; }
  .page-route-actions { width: min(100% - 24px, 1180px); grid-template-columns: 1fr; gap: 8px; }
  .route-action { min-height: 52px; font-size: 17px; }
  .purchase-panel, .subpage-hero .purchase-panel, .hero .purchase-panel { width: 100%; margin: 20px 0 25px; border-right: 0; border-left: 0; border-radius: 0; }
  .purchase-heading { padding: 19px 18px 12px; }
  .purchase-price-list { grid-template-columns: 1fr; }
  .purchase-price-list div { min-height: 79px; border-right: 0; border-bottom: 1px solid #c8d9da; }
  .purchase-price-list div:last-child { border-bottom: 0; }
  .purchase-details { grid-template-columns: 1fr; padding: 12px 18px 5px; }
  .purchase-details p { font-size: 17px; }
  .purchase-actions { flex-direction: column; padding: 14px 18px 20px; }
  .purchase-actions .button { width: 100%; min-height: 60px; }
  .book-pager { width: min(100% - 24px, 1180px); grid-template-columns: 1fr; gap: 12px; }
  .book-page { min-height: 74px; }
  .book-page.empty { display: none; }
  .related-topics { padding: 42px 0 4px; }
  .related-topics-grid { grid-template-columns: 1fr; }
  .related-topics-grid a { min-height: 120px; }
  .toc-groups { grid-template-columns: 1fr; padding: 18px; }
  .toc-dialog-head { padding: 16px 18px; }
  .toc-dialog-head h2 { font-size: 27px; }
  .back-to-top { width: auto; min-width: 118px; }
  .back-to-top strong { position: static; width: auto; height: auto; overflow: visible; clip: auto; font-size: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  @view-transition { navigation: none; }
  .book-page:hover { transform: none; }
}