:root {
  --paper: #f3f7f6;
  --paper-deep: #e6eeec;
  --white: #ffffff;
  --ink: #071925;
  --ink-soft: #163140;
  --muted: #5c6c74;
  --line: rgba(7, 25, 37, 0.12);
  --line-strong: rgba(7, 25, 37, 0.2);
  --navy: #082b45;
  --teal: #00a7ad;
  --cyan: #20d6dc;
  --cyan-soft: #a7f3f1;
  --amber: #f2a53b;
  --glass: rgba(255, 255, 255, 0.72);
  --shadow: 0 30px 80px rgba(12, 36, 48, 0.12);
  --shadow-tight: 0 16px 40px rgba(12, 36, 48, 0.12);
  --radius-xl: 34px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --shell: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: clip;
  background:
    linear-gradient(180deg, #f9fbfa 0%, var(--paper) 44%, #eef4f2 100%);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  background:
    radial-gradient(circle at 8% 18%, rgba(32, 214, 220, 0.12), transparent 24rem),
    radial-gradient(circle at 88% 10%, rgba(8, 43, 69, 0.08), transparent 30rem),
    linear-gradient(105deg, transparent 0 48%, rgba(255,255,255,.7) 49% 51%, transparent 52% 100%);
}

::selection { background: var(--cyan-soft); color: var(--ink); }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { color: inherit; }

.shell {
  width: min(var(--shell), calc(100% - 48px));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 1000;
  transform: translateY(-150%);
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--ink);
  color: white;
  font-weight: 750;
}
.skip-link:focus { transform: none; }

.ambient {
  position: fixed;
  z-index: -2;
  width: 32rem;
  height: 32rem;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .22;
  pointer-events: none;
  will-change: transform;
}
.ambient-one { top: 7rem; left: -17rem; background: #26d8d8; transform: translateY(var(--ambient-one-y, 0px)); }
.ambient-two { top: 34rem; right: -18rem; background: #8eb8ca; transform: translateY(var(--ambient-two-y, 0px)); }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background-color .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled {
  background: rgba(247, 250, 249, 0.9);
  border-color: var(--line);
  box-shadow: 0 10px 28px rgba(8, 34, 49, .07);
  backdrop-filter: blur(18px) saturate(145%);
  -webkit-backdrop-filter: blur(18px) saturate(145%);
}
.header-inner {
  min-height: 94px;
  display: grid;
  grid-template-columns: 270px 1fr auto;
  align-items: center;
  gap: 28px;
}
.brand { width: 248px; line-height: 0; }
.brand img { width: 100%; height: auto; }
.primary-nav { display: flex; justify-content: center; align-items: center; gap: 10px; }
.primary-nav a {
  position: relative;
  padding: 10px 13px;
  border-radius: 999px;
  color: #42545e;
  font-size: .81rem;
  font-weight: 760;
  letter-spacing: .04em;
  transition: color .2s ease, background .2s ease;
}
.primary-nav a:hover,
.primary-nav a:focus-visible,
.primary-nav a[aria-current="page"] { color: var(--ink); background: rgba(255,255,255,.72); }
.primary-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 3px;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--teal);
  transform: translateX(-50%);
}
.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 780;
  letter-spacing: -.01em;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.header-cta {
  padding: 12px 17px;
  background: var(--ink);
  color: #fff;
  font-size: .83rem;
  box-shadow: 0 12px 26px rgba(7,25,37,.16);
}
.header-cta:hover,
.header-cta:focus-visible,
.button:hover,
.button:focus-visible { transform: translateY(-2px); }
.header-cta span,
.button span { color: var(--cyan); }
.button { min-height: 52px; padding: 13px 21px; }
.button-dark { background: var(--ink); color: #fff; box-shadow: 0 16px 34px rgba(7,25,37,.16); }

.hero {
  min-height: min(900px, 96svh);
  padding-top: 168px;
  padding-bottom: 88px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .48fr);
  align-items: center;
  gap: 70px;
}
.hero-copy { max-width: 850px; }
.eyebrow {
  margin: 0 0 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #445961;
  font-size: .72rem;
  font-weight: 820;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.eyebrow > span {
  width: 28px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--teal), var(--cyan));
  box-shadow: 0 0 12px rgba(32,214,220,.5);
}
.eyebrow.light { color: #9ab1bc; }
.hero h1,
.detail-copy h1,
.section-intro h2,
.credential-section h2,
.contact-section h2,
.integrity-band h2 {
  margin: 0;
  font-weight: 730;
  letter-spacing: -.06em;
  line-height: .96;
}
.hero h1 { max-width: 920px; font-size: clamp(4rem, 7.2vw, 7.3rem); }
.hero h1 em {
  font-style: normal;
  color: transparent;
  background: linear-gradient(94deg, var(--navy), var(--teal) 58%, #28cfd3);
  -webkit-background-clip: text;
  background-clip: text;
}
.hero-lede {
  max-width: 690px;
  margin: 30px 0 32px;
  color: #445861;
  font-size: clamp(1.08rem, 1.5vw, 1.35rem);
}
.hero-orbit {
  justify-self: end;
  width: min(330px, 26vw);
  text-align: center;
}
.orbit-rings {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  margin-bottom: 22px;
  overflow: hidden;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(32,214,220,.13), transparent 52%);
  filter: drop-shadow(0 24px 35px rgba(9, 54, 66, .14));
}
.orbit-rings::before,
.orbit-rings::after,
.orbit-rings i {
  content: "";
  position: absolute;
  inset: 8%;
  border: 1px solid rgba(5, 124, 136, .25);
  border-radius: 50%;
}
.orbit-rings::after { inset: 24%; border-color: rgba(5,124,136,.38); }
.orbit-rings i:nth-child(1) { inset: 1%; border-right-color: var(--cyan); animation: orbit 13s linear infinite; }
.orbit-rings i:nth-child(2) { inset: 16%; border-left-color: var(--teal); animation: orbit 9s linear infinite reverse; }
.orbit-rings i:nth-child(3) { inset: 35%; border-top-color: var(--cyan); animation: orbit 6s linear infinite; }
.orbit-rings b {
  position: absolute;
  inset: 44%;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #b9ffff, var(--cyan) 28%, var(--teal) 60%, var(--navy));
  box-shadow: 0 0 30px rgba(32,214,220,.62), 0 0 80px rgba(0,167,173,.2);
}
.hero-orbit p { margin: 0; display: flex; justify-content: center; gap: 8px; color: #53656d; font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; }
.hero-orbit p strong:not(:last-child)::after { content: " /"; color: var(--teal); }

.systems-section { padding: 64px 0 132px; scroll-margin-top: 118px; }
.section-intro { max-width: 790px; margin-bottom: 42px; }
.section-intro h2,
.contact-section h2 { font-size: clamp(3rem, 5.4vw, 5.4rem); }
.section-intro > p:last-child { max-width: 620px; margin: 18px 0 0; color: var(--muted); font-size: 1.05rem; }
.section-intro.compact { margin-bottom: 34px; }
.section-intro.compact h2 { font-size: clamp(2.7rem, 4.6vw, 4.6rem); }

.system-console {
  position: relative;
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  min-height: 760px;
  border: 1px solid rgba(7,25,37,.11);
  border-radius: var(--radius-xl);
  background: rgba(255,255,255,.64);
  box-shadow: var(--shadow);
  overflow: hidden;
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
}
.system-console::after,
.system-stage::after {
  content: "";
  position: absolute;
  pointer-events: none;
}
.system-console::after {
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.9);
}
.system-tabs {
  position: relative;
  z-index: 2;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background:
    radial-gradient(circle at 10% 8%, rgba(31,215,221,.16), transparent 17rem),
    linear-gradient(160deg, #102a37, #071923 62%, #05141d);
  color: #fff;
}
.system-tab {
  position: relative;
  width: 100%;
  min-height: 118px;
  padding: 18px 16px;
  display: grid;
  grid-template-columns: 36px 1fr auto;
  align-items: center;
  gap: 12px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 18px;
  background: rgba(255,255,255,.025);
  text-align: left;
  cursor: pointer;
  transition: border-color .25s ease, background .25s ease, transform .25s ease;
}
.system-tab:hover,
.system-tab:focus-visible { border-color: rgba(32,214,220,.4); background: rgba(255,255,255,.06); outline: none; }
.system-tab.is-active { border-color: rgba(32,214,220,.55); background: linear-gradient(115deg, rgba(32,214,220,.16), rgba(255,255,255,.07)); transform: translateX(5px); }
.system-tab.is-active::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 22%;
  width: 3px;
  height: 56%;
  border-radius: 3px;
  background: var(--cyan);
  box-shadow: 0 0 15px rgba(32,214,220,.8);
}
.tab-index { color: var(--cyan); font-size: .68rem; font-weight: 860; letter-spacing: .13em; }
.system-tab strong { display: block; margin-bottom: 5px; font-size: 1rem; letter-spacing: -.02em; }
.system-tab small { display: block; color: #8fa7b2; font-size: .66rem; letter-spacing: .04em; }
.system-tab > b { color: #6f8995; font-size: 1rem; transition: color .2s ease, transform .2s ease; }
.system-tab.is-active > b { color: var(--cyan); transform: translate(2px, -2px); }
.console-note { margin-top: auto; padding: 20px 16px 8px; border-top: 1px solid rgba(255,255,255,.1); }
.console-note span { display: block; color: #6f8995; font-size: .64rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.console-note strong { display: block; margin-top: 6px; font-size: .83rem; }

.system-stage { position: relative; min-width: 0; padding: 34px; --pointer-x: 50%; --pointer-y: 20%; }
.system-stage::after {
  inset: 0;
  z-index: 0;
  background: radial-gradient(32rem circle at var(--pointer-x) var(--pointer-y), rgba(32,214,220,.11), transparent 62%);
  transition: background-position .1s linear;
}
.system-panel { position: relative; z-index: 1; min-height: 680px; animation: panel-in .42s cubic-bezier(.2,.7,.2,1) both; }
.system-panel[hidden] { display: none; }
.panel-heading {
  min-height: 132px;
  margin-bottom: 18px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}
.panel-heading > div { max-width: 600px; }
.panel-code { margin: 0 0 7px; color: var(--teal); font-size: .66rem; font-weight: 860; letter-spacing: .15em; }
.panel-heading h3 { margin: 0; font-size: clamp(2.2rem, 4vw, 4.25rem); letter-spacing: -.055em; line-height: 1; }
.panel-heading p:not(.panel-code) { margin: 11px 0 0; color: var(--muted); }
.panel-heading > a { flex: 0 0 auto; padding: 10px 0; border-bottom: 1px solid var(--ink); font-size: .78rem; font-weight: 800; }
.panel-heading > a span { margin-left: 8px; color: var(--teal); }

.visual-card {
  --parallax-y: 0px;
  position: relative;
  isolation: isolate;
  margin: 0;
  border: 1px solid rgba(7,25,37,.12);
  border-radius: 25px;
  background: #eaf0ef;
  box-shadow: 0 20px 50px rgba(8,37,49,.12), inset 0 1px 0 rgba(255,255,255,.9);
  overflow: hidden;
}
.visual-card picture { display: block; }
.visual-nmea,
.visual-helm { aspect-ratio: 2 / 1; }
.visual-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: translate3d(0, var(--parallax-y), 0) scale(1.035);
  transform-origin: center;
  transition: transform .14s linear;
}
.visual-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(118deg, rgba(255,255,255,.3), transparent 24% 76%, rgba(8,43,69,.06));
}
.visual-card figcaption {
  position: absolute;
  z-index: 5;
  left: 18px;
  bottom: 16px;
  max-width: calc(100% - 36px);
  padding: 9px 12px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 999px;
  background: rgba(7,25,37,.76);
  color: #e9f8f7;
  font-size: .66rem;
  font-weight: 750;
  letter-spacing: .04em;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.visual-callout {
  position: absolute;
  z-index: 5;
  padding: 6px 9px;
  border: 1px solid rgba(7,25,37,.15);
  border-radius: 999px;
  background: rgba(255,255,255,.84);
  color: #17323f;
  font-size: .61rem;
  font-weight: 850;
  letter-spacing: .05em;
  box-shadow: 0 6px 18px rgba(7,25,37,.1);
  backdrop-filter: blur(8px);
}
.visual-callout::after { content: ""; position: absolute; width: 1px; height: 20px; background: var(--teal); opacity: .7; }
.callout-left { left: 3.5%; top: 42%; }
.callout-left::after { left: 50%; top: 100%; }
.callout-right { right: 3.5%; top: 42%; }
.callout-right::after { left: 50%; top: 100%; }
.callout-power { left: 50%; bottom: 12%; transform: translateX(-50%); border-color: rgba(242,165,59,.38); color: #785018; }
.callout-power::after { left: 50%; bottom: 100%; height: 28px; background: var(--amber); }
.helm-legend {
  position: absolute;
  z-index: 5;
  top: 15px;
  left: 15px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.helm-legend span {
  padding: 7px 10px;
  border: 1px solid rgba(255,255,255,.55);
  border-radius: 999px;
  background: rgba(7,25,37,.72);
  color: #eafafa;
  font-size: .61rem;
  font-weight: 800;
  letter-spacing: .04em;
  backdrop-filter: blur(9px);
}

.radio-visual,
.radio-detail-visual { padding: 0 0 18px; background: linear-gradient(180deg, #dce7ea, #eef3f2 62%, #f9fbfa); }
.radio-visual picture,
.radio-detail-visual picture { height: 335px; overflow: hidden; }
.radio-visual picture img,
.radio-detail-visual picture img { object-position: center; }
.rf-map {
  position: relative;
  z-index: 4;
  width: calc(100% - 32px);
  margin: -24px auto 0;
  padding: 14px;
  display: grid;
  grid-template-columns: minmax(130px, .8fr) auto minmax(230px, 1.2fr);
  align-items: stretch;
  gap: 12px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 18px;
  background: rgba(7,25,37,.94);
  color: #fff;
  box-shadow: 0 18px 40px rgba(7,25,37,.24);
}
.rf-map > strong {
  position: relative;
  min-width: 118px;
  display: grid;
  place-items: center;
  padding: 13px;
  border: 1px solid rgba(32,214,220,.5);
  border-radius: 12px;
  color: var(--cyan);
  font-size: .74rem;
  letter-spacing: .08em;
}
.rf-map > strong::before,
.rf-map > strong::after { content: ""; position: absolute; top: 50%; width: 12px; height: 1px; background: var(--cyan); }
.rf-map > strong::before { right: 100%; }
.rf-map > strong::after { left: 100%; }
.rf-inputs,
.rf-output { display: grid; gap: 6px; }
.rf-inputs { grid-template-columns: 1fr; }
.rf-output { grid-template-columns: repeat(3, 1fr); }
.rf-map span {
  display: grid;
  place-items: center;
  min-height: 44px;
  padding: 8px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 10px;
  background: rgba(255,255,255,.055);
  color: #b8c9cf;
  font-size: .59rem;
  font-weight: 760;
  text-align: center;
}
.radio-license {
  position: relative;
  z-index: 4;
  margin: 14px 24px 0;
  color: #405761;
  font-size: .69rem;
  font-weight: 780;
  text-align: center;
}
.radio-license span { color: var(--teal); margin-right: 6px; }

.service-steps { padding: 28px 0 132px; }
.service-steps ol,
.process-section ol { margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); list-style: none; border-top: 1px solid var(--line-strong); }
.service-steps li,
.process-section li { min-height: 210px; padding: 24px 24px 28px 0; border-right: 1px solid var(--line); }
.service-steps li:not(:first-child),
.process-section li:not(:first-child) { padding-left: 24px; }
.service-steps li:last-child,
.process-section li:last-child { border-right: 0; }
.service-steps li > span,
.process-section li > span,
.scope-grid article > span { display: block; margin-bottom: 30px; color: var(--teal); font-size: .68rem; font-weight: 850; letter-spacing: .15em; }
.service-steps li strong,
.process-section li strong { font-size: 1.35rem; letter-spacing: -.03em; }
.service-steps li p,
.process-section li p { margin: 12px 0 0; color: var(--muted); font-size: .9rem; }

.credential-section,
.integrity-band {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 85% 0%, rgba(32,214,220,.12), transparent 30rem),
    linear-gradient(145deg, #0b2634, #061721 62%, #04131b);
  color: #fff;
}
.credential-section::after,
.integrity-band::after {
  content: "";
  position: absolute;
  right: -15rem;
  bottom: -20rem;
  width: 42rem;
  height: 42rem;
  border: 1px solid rgba(32,214,220,.15);
  border-radius: 50%;
  box-shadow: 0 0 0 70px rgba(32,214,220,.025), 0 0 0 140px rgba(32,214,220,.018);
}
.credential-inner { min-height: 520px; display: grid; grid-template-columns: 1.1fr 160px 1fr; align-items: center; gap: 62px; }
.credential-section h2 { max-width: 620px; font-size: clamp(3rem, 5vw, 5.2rem); }
.nmea-logo { position: relative; z-index: 2; width: 150px; height: 139px; object-fit: contain; border: 8px solid rgba(255,255,255,.07); border-radius: 26px; background: #fff; filter: saturate(.82) contrast(1.04); box-shadow: 0 20px 60px rgba(0,0,0,.28); }
.credential-section ul { position: relative; z-index: 2; margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.18); }
.credential-section li { padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.12); color: #d9e5e8; font-size: .87rem; font-weight: 650; }
.credential-section li::before { content: "✓"; margin-right: 10px; color: var(--cyan); }

.contact-section { min-height: 560px; padding-block: 110px; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .55fr); align-items: center; gap: 80px; }
.contact-section h2 { margin-bottom: 22px; }
.contact-section > div:first-child > p:last-child { max-width: 700px; margin: 0; color: var(--muted); font-size: 1.06rem; }
.contact-actions { display: flex; flex-direction: column; align-items: stretch; gap: 18px; }
.phone-link { padding: 18px 6px; border-bottom: 1px solid var(--line-strong); color: var(--ink); font-size: clamp(1.6rem, 3vw, 2.5rem); font-weight: 720; letter-spacing: -.04em; text-align: center; }

.site-footer { border-top: 1px solid var(--line); background: rgba(255,255,255,.45); }
.footer-inner { min-height: 130px; display: grid; grid-template-columns: 250px 1fr auto; align-items: center; gap: 34px; color: #65747b; font-size: .72rem; }
.footer-inner img { width: 220px; height: auto; }
.footer-inner p:nth-child(2) { text-align: center; }

.detail-hero { padding-top: 174px; padding-bottom: 118px; display: grid; grid-template-columns: minmax(320px, .82fr) minmax(0, 1.25fr); align-items: center; gap: 64px; }
.back-link { display: inline-flex; margin-bottom: 30px; color: #53656d; font-size: .74rem; font-weight: 780; }
.back-link:hover,
.back-link:focus-visible { color: var(--teal); }
.detail-copy h1 { max-width: 710px; font-size: clamp(3.5rem, 6vw, 6.4rem); }
.detail-lede { max-width: 670px; margin: 26px 0 30px; color: #4f626b; font-size: clamp(1.04rem, 1.45vw, 1.24rem); }
.detail-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; }
.detail-actions > span { color: #52666e; font-size: .69rem; font-weight: 820; letter-spacing: .08em; text-transform: uppercase; }
.detail-actions > span::before { content: "✓"; margin-right: 7px; color: var(--teal); }
.detail-visual { min-width: 0; }
.detail-visual.visual-nmea,
.detail-visual.visual-helm { aspect-ratio: 2 / 1; }
.radio-detail-visual picture { height: 410px; }
.rf-map-large { margin-top: -35px; }

.scope-section { padding: 28px 0 126px; }
.scope-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.scope-grid article {
  min-height: 300px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,.58);
  box-shadow: 0 16px 36px rgba(8,37,49,.06);
  backdrop-filter: blur(12px);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.scope-grid article:hover { transform: translateY(-5px); border-color: rgba(0,167,173,.32); box-shadow: var(--shadow-tight); }
.scope-grid article > span { margin-bottom: 58px; }
.scope-grid h3 { margin: 0; font-size: 1.45rem; letter-spacing: -.035em; }
.scope-grid p { margin: 13px 0 0; color: var(--muted); font-size: .91rem; }

.integrity-band { padding-block: 105px; }
.integrity-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr .9fr; align-items: center; gap: 90px; }
.integrity-band h2 { max-width: 660px; font-size: clamp(3rem, 5vw, 5rem); }
.integrity-band ul { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.16); }
.integrity-band li { padding: 15px 0; border-bottom: 1px solid rgba(255,255,255,.1); color: #c8d6db; font-size: .9rem; }
.integrity-band li::before { content: "→"; margin-right: 10px; color: var(--cyan); }

.process-section { padding: 120px 0; }
.service-switcher { padding: 0 0 110px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.service-switcher a {
  min-height: 160px;
  padding: 26px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-content: center;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255,255,255,.56);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.service-switcher a:hover,
.service-switcher a:focus-visible { transform: translateY(-4px); border-color: rgba(0,167,173,.35); box-shadow: var(--shadow-tight); }
.service-switcher span { grid-column: 1; color: var(--teal); font-size: .65rem; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.service-switcher strong { grid-column: 1; margin-top: 11px; font-size: 1.55rem; letter-spacing: -.04em; }
.service-switcher b { grid-column: 2; grid-row: 1 / 3; align-self: center; color: var(--teal); }

[data-reveal] { opacity: 1; transform: none; }
[data-reveal].is-visible { animation: reveal-in .7s cubic-bezier(.2,.7,.2,1) both; }

@keyframes orbit { to { transform: rotate(1turn); } }
@keyframes panel-in { from { opacity: 0; transform: translateY(12px) scale(.992); } to { opacity: 1; transform: none; } }
@keyframes reveal-in { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

@media (max-width: 1080px) {
  .header-inner { grid-template-columns: 230px 1fr auto; gap: 16px; }
  .brand { width: 218px; }
  .system-console { grid-template-columns: 1fr; }
  .system-tabs { display: grid; grid-template-columns: repeat(3, 1fr); border-radius: 0; }
  .system-tab { min-height: 112px; grid-template-columns: 28px 1fr; }
  .system-tab > b { display: none; }
  .system-tab.is-active { transform: translateY(4px); }
  .system-tab.is-active::before { top: auto; bottom: -1px; left: 20%; width: 60%; height: 3px; }
  .console-note { display: none; }
  .system-stage { padding: 28px; }
  .system-panel { min-height: auto; }
  .credential-inner { grid-template-columns: 1.2fr 130px .9fr; gap: 36px; }
  .nmea-logo { width: 124px; height: 115px; }
  .detail-hero { grid-template-columns: 1fr; gap: 52px; }
  .detail-copy { max-width: 850px; }
}

@media (max-width: 820px) {
  .site-header { background: rgba(247,250,249,.92); border-color: var(--line); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); }
  .header-inner { min-height: 120px; padding-block: 10px 8px; grid-template-columns: 1fr auto; grid-template-rows: auto auto; gap: 7px 12px; }
  .brand { width: 205px; }
  .header-cta { padding: 10px 13px; font-size: .72rem; }
  .primary-nav { grid-column: 1 / -1; grid-row: 2; justify-content: flex-start; overflow-x: auto; scrollbar-width: none; }
  .primary-nav::-webkit-scrollbar { display: none; }
  .primary-nav a { padding: 7px 11px; white-space: nowrap; }
  .hero { min-height: auto; padding-top: 180px; grid-template-columns: 1fr; gap: 48px; }
  .hero-orbit { justify-self: start; width: 230px; }
  .hero-orbit p { justify-content: flex-start; }
  .service-steps ol,
  .process-section ol { grid-template-columns: repeat(2, 1fr); }
  .service-steps li:nth-child(2),
  .process-section li:nth-child(2) { border-right: 0; }
  .service-steps li:nth-child(3),
  .service-steps li:nth-child(4),
  .process-section li:nth-child(3),
  .process-section li:nth-child(4) { border-top: 1px solid var(--line); }
  .service-steps li:nth-child(3),
  .process-section li:nth-child(3) { padding-left: 0; }
  .credential-inner { padding-block: 88px; grid-template-columns: 1fr 120px; }
  .credential-section ul { grid-column: 1 / -1; }
  .contact-section { grid-template-columns: 1fr; gap: 44px; }
  .contact-actions { max-width: 430px; }
  .footer-inner { grid-template-columns: 220px 1fr; padding-block: 28px; }
  .footer-inner p:nth-child(2) { text-align: right; }
  .footer-inner p:last-child { grid-column: 1 / -1; text-align: center; }
  .scope-grid { grid-template-columns: 1fr; }
  .scope-grid article { min-height: 230px; }
  .scope-grid article > span { margin-bottom: 36px; }
  .integrity-inner { grid-template-columns: 1fr; gap: 52px; }
}

@media (max-width: 640px) {
  .shell { width: min(100% - 32px, var(--shell)); }
  .header-inner { width: min(100% - 24px, var(--shell)); }
  .brand { width: 176px; }
  .header-cta { padding: 9px 11px; }
  .header-cta span { display: none; }
  .hero { padding-top: 168px; padding-bottom: 70px; gap: 42px; }
  .hero h1 { font-size: clamp(3.25rem, 15vw, 4.9rem); }
  .hero-lede { margin-top: 24px; font-size: 1.02rem; }
  .hero-orbit { width: 190px; }
  .systems-section { padding-top: 36px; padding-bottom: 96px; }
  .section-intro { margin-bottom: 30px; }
  .section-intro h2,
  .contact-section h2 { font-size: clamp(2.7rem, 13vw, 4.2rem); }
  .system-console { border-radius: 24px; }
  .system-tabs { padding: 12px; grid-template-columns: 1fr; gap: 7px; }
  .system-tab { min-height: 80px; padding: 13px; grid-template-columns: 30px 1fr; }
  .system-tab.is-active { transform: translateX(4px); }
  .system-tab.is-active::before { top: 20%; bottom: auto; left: -1px; width: 3px; height: 60%; }
  .system-stage { padding: 17px 12px 14px; }
  .panel-heading { min-height: 0; margin-bottom: 16px; display: block; }
  .panel-heading h3 { font-size: 2.25rem; }
  .panel-heading p:not(.panel-code) { font-size: .88rem; }
  .panel-heading > a { display: inline-block; margin-top: 12px; }
  .visual-card { border-radius: 18px; }
  .visual-card figcaption { left: 8px; bottom: 8px; max-width: calc(100% - 16px); padding: 6px 8px; border-radius: 10px; font-size: .48rem; letter-spacing: 0; }
  .visual-callout { padding: 4px 6px; font-size: .43rem; }
  .callout-left,
  .callout-right { top: 39%; }
  .callout-power { bottom: 17%; }
  .visual-callout::after { height: 12px; }
  .helm-legend { top: 7px; left: 7px; gap: 4px; }
  .helm-legend span { padding: 4px 6px; font-size: .44rem; }
  .radio-visual picture,
  .radio-detail-visual picture { height: 220px; }
  .rf-map { width: calc(100% - 16px); margin-top: -14px; padding: 8px; grid-template-columns: 1fr; gap: 7px; }
  .rf-map > strong { min-width: 0; min-height: 44px; }
  .rf-map > strong::before,
  .rf-map > strong::after { display: none; }
  .rf-inputs { grid-template-columns: repeat(2, 1fr); }
  .rf-output { grid-template-columns: repeat(3, 1fr); }
  .rf-map span { min-height: 40px; font-size: .5rem; }
  .radio-license { margin-top: 10px; font-size: .58rem; }
  .service-steps { padding-bottom: 96px; }
  .service-steps ol,
  .process-section ol { grid-template-columns: 1fr; }
  .service-steps li,
  .process-section li,
  .service-steps li:not(:first-child),
  .process-section li:not(:first-child) { min-height: 0; padding: 22px 0; border-right: 0; border-top: 1px solid var(--line); }
  .service-steps li:first-child,
  .process-section li:first-child { border-top: 0; }
  .service-steps li > span,
  .process-section li > span { margin-bottom: 15px; }
  .credential-inner { min-height: 0; padding-block: 78px; grid-template-columns: 1fr; gap: 34px; }
  .credential-section h2 { font-size: clamp(2.8rem, 13vw, 4.2rem); }
  .nmea-logo { width: 105px; height: 97px; border-radius: 19px; }
  .contact-section { min-height: 0; padding-block: 84px; }
  .phone-link { text-align: left; }
  .footer-inner { grid-template-columns: 1fr; gap: 12px; text-align: left; }
  .footer-inner img { width: 200px; }
  .footer-inner p:nth-child(2),
  .footer-inner p:last-child { grid-column: auto; text-align: left; margin: 0; }
  .detail-hero { padding-top: 174px; padding-bottom: 92px; gap: 40px; }
  .detail-copy h1 { font-size: clamp(3.25rem, 14.5vw, 5rem); }
  .detail-actions { align-items: flex-start; flex-direction: column; }
  .detail-visual.visual-nmea,
  .detail-visual.visual-helm { aspect-ratio: 2 / 1; }
  .scope-section { padding-bottom: 92px; }
  .scope-grid article { min-height: 0; padding: 24px; }
  .integrity-band { padding-block: 80px; }
  .integrity-band h2 { font-size: clamp(2.8rem, 13vw, 4.2rem); }
  .process-section { padding-block: 92px; }
  .service-switcher { grid-template-columns: 1fr; padding-bottom: 80px; }
  .service-switcher a { min-height: 132px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
  .visual-card img,
  .ambient { transform: none !important; }
}