:root {
  --ink: #112629;
  --ink-soft: #334b4f;
  --muted: #607477;
  --line: #cbdadc;
  --line-dark: #4b6266;
  --paper: #ffffff;
  --mist: #f1f6f6;
  --mist-deep: #e5eeee;
  --teal: #008692;
  --teal-dark: #006970;
  --teal-light: #56c7cc;
  --orange: #bd5727;
  --charcoal: #132326;
  --charcoal-soft: #1c3034;
  --success: #128c7e;
  --shadow: 0 22px 60px rgba(17, 38, 41, 0.13);
  --shell: 1220px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-underline-offset: 4px; }
button, input, select, textarea { font: inherit; }
h1, h2, h3, p, figure, ul, ol, dl, dd { margin-top: 0; }
h1, h2, h3 { color: var(--ink); line-height: 1.08; }
h1 { margin-bottom: 24px; font-size: clamp(42px, 5.1vw, 70px); letter-spacing: -0.035em; }
h2 { margin-bottom: 20px; font-size: clamp(32px, 3.4vw, 48px); letter-spacing: -0.025em; }
h3 { margin-bottom: 10px; font-size: 21px; }

.site-shell { width: min(calc(100% - 48px), var(--shell)); margin-inline: auto; }
.section { padding: 96px 0; scroll-margin-top: 150px; }
.section--mist { background: var(--mist); }
.section--dark { color: #d9e4e5; background: var(--charcoal); }
.section--dark h2, .section--dark h3 { color: #fff; }
.section--dark .kicker { color: #78dcdf; }
.kicker {
  margin-bottom: 14px;
  color: var(--teal-dark);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: .11em;
  text-transform: uppercase;
}
.section-heading { max-width: 820px; margin-bottom: 46px; }
.section-heading p:not(.kicker) { color: var(--muted); font-size: 18px; }
.section--dark .section-heading p:not(.kicker) { color: #afc1c3; }
.wide-heading {
  display: grid;
  max-width: none;
  align-items: end;
  gap: 72px;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, .7fr);
}

.hero {
  overflow: hidden;
  background:
    radial-gradient(circle at 12% 5%, rgba(86,199,204,.18), transparent 34%),
    linear-gradient(145deg, #eef5f5 0%, #fff 60%);
}
.hero .breadcrumb { display: flex; }
.breadcrumb {
  display: flex;
  min-height: 52px;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 13px;
}
.breadcrumb a { color: var(--teal-dark); text-decoration: none; }
.hero-grid {
  display: grid;
  min-height: 650px;
  align-items: center;
  gap: 44px;
  grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr);
}
.hero-copy { padding: 48px 0 58px; }
.hero-copy > p:not(.kicker):not(.visual-disclaimer) {
  max-width: 660px;
  color: var(--ink-soft);
  font-size: 19px;
}
.trust-chips { display: flex; margin: 25px 0 28px; padding: 0; flex-wrap: wrap; gap: 9px; list-style: none; }
.trust-chips li {
  padding: 7px 11px;
  border: 1px solid #a9c4c7;
  border-radius: 999px;
  color: var(--teal-dark);
  background: rgba(255,255,255,.76);
  font-size: 12px;
  font-weight: 800;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; }
.button {
  display: inline-flex;
  min-height: 50px;
  padding: 12px 19px;
  border: 2px solid var(--teal-dark);
  border-radius: 6px;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: var(--teal-dark);
  font-size: 14px;
  font-weight: 820;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: 160ms ease;
}
.button:hover, .button:focus-visible { border-color: var(--teal); background: var(--teal); }
.button--outline { color: var(--teal-dark); background: #fff; }
.button--outline:hover, .button--outline:focus-visible { color: #fff; }
.button--whatsapp { border-color: var(--success); background: var(--success); }
.button--small { min-height: 42px; padding: 9px 14px; font-size: 13px; }
.visual-disclaimer { margin: 17px 0 0; color: var(--muted); font-size: 12px; line-height: 1.45; }
.hero-visual { position: relative; margin: 0; }
.concept-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 3;
  padding: 7px 10px;
  border: 1px solid rgba(255,255,255,.82);
  border-radius: 4px;
  color: #fff;
  background: rgba(17,38,41,.84);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: .08em;
  line-height: 1.2;
  text-transform: uppercase;
}
.hero-visual::before {
  position: absolute;
  inset: 7% 0 8% 10%;
  z-index: 0;
  border-radius: 50%;
  background: rgba(0,105,112,.10);
  filter: blur(10px);
  content: "";
}
.hero-visual img { position: relative; z-index: 1; width: 100%; height: auto; object-fit: contain; filter: drop-shadow(0 24px 30px rgba(17,38,41,.18)); }
.hero-facts {
  display: grid;
  border-top: 1px solid var(--line);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.hero-fact { padding: 25px 28px 28px; }
.hero-fact + .hero-fact { border-left: 1px solid var(--line); }
.hero-fact span { display: block; margin-bottom: 7px; color: var(--orange); font-size: 11px; font-weight: 850; letter-spacing: .09em; text-transform: uppercase; }
.hero-fact strong { display: block; margin-bottom: 6px; font-size: 19px; }
.hero-fact p { margin: 0; color: var(--muted); font-size: 13px; }

.page-index {
  position: sticky;
  top: 72px;
  z-index: 90;
  overflow-x: auto;
  border-block: 1px solid var(--line);
  background: rgba(255,255,255,.97);
}
.page-index .site-shell { display: flex; width: max-content; min-width: min(calc(100% - 48px), var(--shell)); gap: 28px; }
.page-index a { padding: 14px 0 12px; border-bottom: 2px solid transparent; color: var(--ink-soft); font-size: 13px; font-weight: 760; text-decoration: none; white-space: nowrap; }
.page-index a:hover, .page-index a:focus-visible { border-color: var(--teal); color: var(--teal-dark); }

.current-path {
  display: grid;
  padding: 28px;
  border: 1px solid var(--line-dark);
  border-radius: 8px;
  background: var(--charcoal-soft);
  gap: 12px;
  grid-template-columns: repeat(7, minmax(0, 1fr));
}
.current-path--eight { grid-template-columns: repeat(8, minmax(0, 1fr)); }
.current-path--eight .path-node { padding-inline: 7px; font-size: 12px; }
.path-node { position: relative; display: grid; min-height: 102px; padding: 16px 10px; place-items: center; border: 1px solid #4d6569; color: #fff; background: #23383c; font-size: 13px; font-weight: 760; text-align: center; }
.path-node:not(:last-child)::after { position: absolute; top: 50%; right: -13px; z-index: 2; color: #78dcdf; content: "→"; transform: translateY(-50%); }
.principle-note { margin: 28px 0 0; padding-left: 18px; border-left: 4px solid var(--orange); color: #bed0d2; }

.design-basis-grid {
  display: grid;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.design-card {
  min-height: 285px;
  padding: 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.design-card > span { color: var(--orange); font-family: ui-monospace, monospace; font-size: 12px; font-weight: 800; }
.design-card h3 { margin-top: 48px; }
.design-card p { color: var(--muted); font-size: 14px; }
.design-card p strong { color: var(--teal-dark); font-size: 16px; }

.configuration-grid { display: grid; border-top: 1px solid var(--line); border-left: 1px solid var(--line); grid-template-columns: repeat(4, minmax(0, 1fr)); }
.configuration-card { display: flex; min-height: 315px; padding: 29px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); flex-direction: column; background: #fff; }
.configuration-card .number { margin-bottom: 48px; color: var(--orange); font-family: ui-monospace, monospace; font-size: 12px; font-weight: 800; }
.configuration-card p { color: var(--muted); font-size: 14px; }
.configuration-card a { margin-top: auto; color: var(--teal-dark); font-size: 13px; font-weight: 820; }
.product-evidence { display: grid; margin-top: 48px; gap: 24px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.product-study { position: relative; margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: #fff; box-shadow: 0 15px 42px rgba(17,38,41,.08); }
.product-study img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: contain; background: #edf1f1; }
.product-study:nth-child(2) img { object-position: center; }
.product-study figcaption { padding: 25px 27px 27px; }
.concept-inline { margin: 0 0 9px; color: var(--muted); font-size: 10px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.product-study figcaption .kicker { margin-bottom: 9px; }
.product-study figcaption h3 { margin-bottom: 10px; font-size: 22px; }
.product-study figcaption p:last-child { margin-bottom: 0; color: var(--muted); font-size: 14px; }

.interface-grid { display: grid; align-items: start; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); }
.interface-list { border-top: 2px solid var(--ink); }
.interface-item { display: grid; padding: 23px 0; border-bottom: 1px solid var(--line); gap: 26px; grid-template-columns: 170px minmax(0, 1fr); }
.interface-item h3 { margin: 0; font-size: 18px; }
.interface-item p { margin: 0; color: var(--muted); }
.interface-image { position: relative; align-self: start; margin: 0 0 0 50px; overflow: hidden; border-radius: 8px; background: #e9eeee; box-shadow: var(--shadow); }
.interface-image img { width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: contain; object-position: center; }
.interface-image figcaption { padding: 14px 16px; color: var(--muted); background: #fff; font-size: 11px; }

.deepwell-grid { display: grid; align-items: start; gap: 64px; grid-template-columns: minmax(0, 1fr) minmax(320px, .78fr); }
.deepwell-list { display: grid; padding: 0; border-top: 1px solid #50666a; grid-template-columns: repeat(2, minmax(0, 1fr)); list-style: none; }
.deepwell-list li { min-height: 84px; padding: 18px; border-right: 1px solid #50666a; border-bottom: 1px solid #50666a; color: #d4e0e1; font-size: 14px; }
.deepwell-visual { margin: 26px 0 0; overflow: hidden; border: 1px solid #50666a; border-radius: 8px; background: #e7ecec; }
.deepwell-visual img { display: block; width: 100%; height: auto; object-fit: contain; }
.deepwell-visual figcaption { padding: 12px 14px; color: #c4d2d4; background: #21363a; font-size: 11px; line-height: 1.5; }
.input-panel { padding: 32px; background: #fff; box-shadow: var(--shadow); }
.input-panel h3 { font-size: 25px; }
.input-panel ul { margin: 0; padding-left: 20px; color: var(--ink-soft); }
.boundary-note { margin-top: 24px; padding: 15px 16px; color: #fff; background: var(--orange); font-size: 13px; font-weight: 730; }
.section-link { color: #78dcdf; font-weight: 820; text-decoration-thickness: 1px; }
.section-link:hover, .section-link:focus-visible { color: #fff; }

.table-scroll { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
table { width: 100%; min-width: 760px; border-collapse: collapse; color: var(--ink); font-size: 14px; }
th, td { padding: 17px 18px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
tr > :last-child { border-right: 0; }
tbody tr:last-child > * { border-bottom: 0; }
thead { background: var(--mist-deep); }
thead th { color: var(--ink-soft); font-size: 11px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
tbody th { width: 29%; font-weight: 780; }
tbody tr:nth-child(even) { background: #f8fbfb; }
.standards-table { border-color: #50666a; }
.standards-table table { color: #dce7e8; background: var(--charcoal-soft); }
.standards-table thead { background: #2b4246; }
.standards-table thead th, .standards-table tbody th { color: #fff; }
.standards-table th, .standards-table td { border-color: #50666a; }
.standards-table tbody tr:nth-child(even) { background: #172a2e; }
.standard-boundary { margin-top: 18px; color: #a9bcbf; font-size: 13px; }

.evidence-strip { display: grid; border-top: 1px solid var(--line); border-left: 1px solid var(--line); grid-template-columns: repeat(3, minmax(0, 1fr)); }
.evidence-card { min-height: 220px; padding: 27px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.evidence-card span { color: var(--orange); font-family: ui-monospace, monospace; font-size: 12px; font-weight: 800; }
.evidence-card h3 { margin-top: 36px; }
.evidence-card p { color: var(--muted); font-size: 14px; }

.download-panel { display: grid; padding: 38px; border: 1px solid var(--line); background: linear-gradient(135deg, var(--mist) 0%, #fff 74%); gap: 40px; grid-template-columns: minmax(0, 1fr) auto; }
.download-panel h2 { margin-bottom: 12px; font-size: 34px; }
.download-panel p { max-width: 760px; margin: 0; color: var(--muted); }
.download-panel .button { align-self: center; }

.faq-layout { display: grid; align-items: start; gap: 80px; grid-template-columns: minmax(270px, .7fr) minmax(0, 1.3fr); }
.faq-list { border-top: 2px solid var(--ink); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary { position: relative; padding: 23px 42px 23px 0; cursor: pointer; font-size: 17px; font-weight: 760; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { position: absolute; top: 21px; right: 3px; color: var(--teal-dark); content: "+"; font-size: 25px; }
.faq-item[open] summary::after { content: "−"; }
.faq-item p { padding: 0 38px 22px 0; color: var(--muted); }

.rfq-section { background: linear-gradient(155deg, #0f2225 0%, #1d393d 100%); }
.rfq-grid { display: grid; align-items: start; gap: 56px; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); }
.rfq-copy h2 { color: #fff; }
.rfq-copy > p:not(.kicker) { color: #b6c9cb; font-size: 17px; }
.rfq-steps { margin: 32px 0 0; padding: 0; list-style: none; counter-reset: rfq; }
.rfq-steps li { position: relative; padding: 17px 0 17px 48px; border-top: 1px solid #496064; color: #dce6e7; counter-increment: rfq; }
.rfq-steps li::before { position: absolute; top: 15px; left: 0; color: #78dcdf; content: "0" counter(rfq); font-family: ui-monospace, monospace; font-weight: 800; }
.rfq-form { padding: 34px; scroll-margin-top: 150px; border-radius: 8px; background: #fff; box-shadow: var(--shadow); }
.rfq-form h3 { margin-bottom: 6px; font-size: 27px; }
.rfq-form > p { color: var(--muted); }
.form-grid { display: grid; gap: 17px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.field { min-width: 0; }
.field--full { grid-column: 1 / -1; }
.field label { display: block; margin-bottom: 6px; color: var(--ink-soft); font-size: 13px; font-weight: 760; }
.field input, .field select, .field textarea { width: 100%; padding: 11px 12px; border: 1px solid #aebfc1; border-radius: 5px; color: var(--ink); background: #fff; }
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 3px solid rgba(0,134,146,.18); border-color: var(--teal); }
.field-help { margin: 5px 0 0; color: var(--muted); font-size: 11px; }
.privacy-note { margin: 14px 0 0; color: var(--muted); font-size: 11px; }
.contact-options { display: flex; margin-top: 22px; flex-wrap: wrap; gap: 10px; }

.site-footer { padding: 64px 0 22px; color: #b5c4c6; background: #0e191b; }
.footer-grid { display: grid; gap: 60px; grid-template-columns: minmax(0, 1.3fr) repeat(2, minmax(160px, .6fr)); }
.footer-brand { display: block; width: 135px; margin-bottom: 20px; }
.footer-grid p { max-width: 520px; color: #8fa3a6; }
.footer-grid h2 { margin-bottom: 15px; color: #fff; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }
.footer-grid a { display: block; width: fit-content; margin-bottom: 8px; color: #aebfc1; font-size: 13px; text-decoration: none; }
.footer-bottom { display: flex; margin-top: 44px; padding-top: 18px; border-top: 1px solid #35484b; justify-content: space-between; gap: 20px; color: #71868a; font-size: 11px; }

@media (max-width: 980px) {
  .hero-grid, .interface-grid, .deepwell-grid, .rfq-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 840px; margin-inline: auto; }
  .configuration-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-evidence { grid-template-columns: 1fr; }
  .interface-image { min-height: 440px; margin: 42px 0 0; }
  .wide-heading, .faq-layout { gap: 36px; grid-template-columns: 1fr; }
  .current-path { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .current-path--eight { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .design-basis-grid { grid-template-columns: 1fr; }
  .design-card { min-height: 0; }
  .design-card h3 { margin-top: 28px; }
  .path-node:nth-child(4)::after { display: none; }
}

@media (max-width: 700px) {
  body { font-size: 15px; }
  .hero { padding-top: 38px; }
  .site-shell { width: min(calc(100% - 28px), var(--shell)); }
  .section { padding: 62px 0; scroll-margin-top: 80px; }
  .hero .breadcrumb { display: none !important; }
  .hero-grid { display: flex; min-height: 0; align-items: stretch; flex-direction: column; gap: 0; }
  .hero-copy { display: contents; }
  .hero-copy > .kicker { order: 1; }
  .hero-copy > h1 { order: 2; }
  .hero-copy > p:not(.kicker):not(.visual-disclaimer) { order: 3; }
  .hero-actions { order: 4; }
  .hero-visual { order: 5; }
  .trust-chips { order: 6; }
  .visual-disclaimer { order: 7; }
  .hero h1 { margin-bottom: 18px; font-size: clamp(30px, 8.6vw, 35px); line-height: 1.06; letter-spacing: -.025em; }
  .hero-copy > p:not(.kicker):not(.visual-disclaimer) { font-size: 16px; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .button { width: 100%; }
  .button--small { min-height: 46px; }
  .hero-visual { margin: 24px -8px 0; }
  .hero-visual img { height: auto; aspect-ratio: auto; object-fit: contain; }
  .hero-facts { grid-template-columns: 1fr; }
  .hero-fact { padding-inline: 0; }
  .hero-fact + .hero-fact { border-top: 1px solid var(--line); border-left: 0; }
  .page-index { position: static; top: auto; }
  .page-index .site-shell { min-width: calc(100% - 28px); margin-left: 14px; padding-right: 14px; }
  .current-path { grid-template-columns: 1fr; }
  .current-path--eight { grid-template-columns: 1fr; }
  .path-node { min-height: 66px; }
  .path-node:not(:last-child)::after { top: auto; right: 50%; bottom: -17px; display: block; transform: translateX(50%) rotate(90deg); }
  .configuration-grid, .deepwell-list, .evidence-strip, .design-basis-grid { grid-template-columns: 1fr; }
  .product-evidence { margin-top: 32px; gap: 18px; }
  .product-study figcaption { padding: 21px 20px 23px; }
  .configuration-card { min-height: 0; }
  .interface-item { gap: 8px; grid-template-columns: 1fr; }
  .interface-image { min-height: 0; }
  .download-panel { padding: 27px; grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .field--full { grid-column: auto; }
  .rfq-form { padding: 24px 18px; scroll-margin-top: 80px; }
  .footer-grid { gap: 34px; grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}