:root {
  --navy: #061a2d;
  --navy-2: #0a2843;
  --ink: #101c2b;
  --muted: #637083;
  --cyan: #09c8e8;
  --cyan-soft: #d8f7fb;
  --mint: #72efcf;
  --paper: #f2f5f7;
  --white: #fff;
  --line: rgba(8, 38, 64, .12);
  --radius: 6px;
  --font: "Manrope", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; height: auto; }
button { font: inherit; }
.container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  width: 100%;
  border-bottom: 1px solid rgba(255,255,255,.1);
  background: rgba(6,26,45,.72);
  backdrop-filter: blur(18px);
  transition: background .3s ease, box-shadow .3s ease;
}
.site-header.scrolled {
  background: rgba(6,26,45,.96);
  box-shadow: 0 12px 40px rgba(0,0,0,.14);
}
.nav-wrap {
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: inline-flex;
  align-items: center;
  overflow: visible;
  line-height: 0;
}
.brand img {
  width: auto;
  height: 46px;
  max-width: 230px;
  object-fit: contain;
  object-position: left center;
}
.site-nav { display: flex; align-items: center; gap: 28px; color: rgba(255,255,255,.76); font-size: 13px; font-weight: 500; }
.site-nav > a { transition: color .2s; }
.site-nav > a:hover { color: #fff; }
.site-nav .nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  padding: 12px 18px;
  border: 1px solid rgba(255,255,255,.28);
  color: #fff;
}
.nav-cta span { color: var(--cyan); }
.menu-toggle { display: none; }

.hero {
  min-height: 940px;
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 74% 40%, rgba(13,168,198,.2), transparent 28%),
    linear-gradient(135deg, #041321 0%, #07243e 52%, #061a2d 100%);
  padding-top: 78px;
}
.hero-grid {
  position: absolute;
  inset: 0;
  opacity: .16;
  background-image:
    linear-gradient(rgba(255,255,255,.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.09) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: linear-gradient(to bottom, black, transparent 88%);
}
.hero-grid::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, var(--navy) 3%, transparent 42%, var(--navy) 92%);
}
.hero-orbit {
  position: absolute;
  border: 1px solid rgba(23,216,239,.18);
  border-radius: 50%;
}
.orbit-one { width: 680px; height: 680px; top: 75px; right: -150px; }
.orbit-two { width: 460px; height: 460px; top: 185px; right: -40px; }
.hero-layout {
  min-height: 670px;
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  gap: 70px;
  align-items: center;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 23px;
  color: var(--cyan);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .22em;
}
.eyebrow span { width: 28px; height: 1px; background: currentColor; }
.eyebrow.dark { color: #038aa7; }
.hero h1 {
  margin: 0;
  font-size: clamp(54px, 5.2vw, 76px);
  line-height: 1.14;
  letter-spacing: -.05em;
  font-weight: 700;
}
.hero h1 em {
  color: transparent;
  font-style: normal;
  -webkit-text-stroke: 1px rgba(255,255,255,.88);
}
.hero-lead {
  max-width: 580px;
  margin: 28px 0 0;
  color: rgba(255,255,255,.66);
  font-size: 16px;
  line-height: 1.9;
}
.hero-actions { display: flex; gap: 14px; margin-top: 40px; }
.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 34px;
  padding: 0 24px;
  border: 1px solid transparent;
  font-size: 13px;
  font-weight: 600;
  transition: transform .2s, background .2s, border-color .2s;
}
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--navy); background: var(--cyan); }
.button-primary:hover { background: #48ddf2; }
.hero-visual { position: relative; }
.visual-label {
  position: absolute;
  z-index: 2;
  top: -36px;
  right: 12px;
  display: flex;
  align-items: center;
  gap: 9px;
  color: rgba(255,255,255,.52);
  font-size: 10px;
  letter-spacing: .2em;
}
.visual-label i { width: 7px; height: 7px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 14px var(--mint); }
.product-stage {
  position: relative;
  padding: 38px;
  background: rgba(255,255,255,.96);
  box-shadow: 0 50px 90px rgba(0,0,0,.28);
  transform: perspective(1100px) rotateY(-3deg) rotateX(1deg);
}
.product-stage::before, .product-stage::after {
  content: "";
  position: absolute;
  pointer-events: none;
}
.product-stage::before { inset: -8px 14px 14px -8px; border: 1px solid rgba(31,211,233,.28); }
.product-stage::after { width: 86px; height: 3px; left: 38px; bottom: 25px; background: var(--cyan); }
.product-stage img { width: 100%; aspect-ratio: 1.75; object-fit: contain; }
.data-chip {
  position: absolute;
  z-index: 3;
  min-width: 128px;
  padding: 13px 16px;
  border: 1px solid rgba(255,255,255,.15);
  background: rgba(4,22,38,.87);
  backdrop-filter: blur(12px);
  box-shadow: 0 15px 30px rgba(0,0,0,.2);
}
.data-chip strong { display: block; color: #fff; font-size: 21px; }
.data-chip span { color: rgba(255,255,255,.55); font-size: 10px; }
.chip-one { left: -26px; bottom: 28px; }
.chip-two { right: -18px; top: 62px; }
.signal-line { height: 68px; position: absolute; right: 30px; bottom: -54px; left: 50px; overflow: hidden; opacity: .7; }
.signal-line::before {
  content: "";
  display: block;
  height: 33px;
  border-bottom: 1px solid var(--cyan);
  clip-path: polygon(0 47%, 24% 47%, 28% 45%, 31% 0, 35% 100%, 39% 47%, 57% 47%, 61% 38%, 65% 58%, 69% 47%, 100% 47%, 100% 52%, 0 52%);
  background: var(--cyan);
}
.trust-bar {
  position: relative;
  z-index: 2;
  border-top: 1px solid rgba(255,255,255,.12);
  display: grid;
  grid-template-columns: 250px 1fr;
  align-items: center;
  padding: 36px 0;
}
.trust-bar > p { color: rgba(255,255,255,.42); font-size: 12px; }
.trust-stats { display: grid; grid-template-columns: repeat(4,1fr); }
.trust-stats > div { padding: 0 30px; border-left: 1px solid rgba(255,255,255,.12); }
.trust-stats strong { display: block; margin-bottom: 6px; font-size: 23px; font-weight: 600; }
.trust-stats span { color: rgba(255,255,255,.46); font-size: 10px; }

.section { padding: 132px 0; }
.section-heading { max-width: 690px; margin-bottom: 64px; }
.section-heading h2, .parameter-intro h2, .about-copy h2, .contact-heading h2 {
  margin: 0;
  font-size: clamp(36px, 4vw, 54px);
  line-height: 1.25;
  letter-spacing: -.045em;
}
.section-heading > p:last-child, .parameter-intro > p, .about-copy > p {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}
.tech-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: center; }
.tech-illustration { position: relative; }
.image-frame { padding: 28px; background: #fff; box-shadow: 0 28px 70px rgba(24,46,70,.1); }
.image-frame img { width: 100%; aspect-ratio: 1.05; object-fit: cover; object-position: 50% 55%; filter: saturate(.82); }
.tech-caption {
  position: absolute;
  right: -26px;
  bottom: 28px;
  padding: 17px 22px;
  color: #fff;
  background: var(--navy);
  font-size: 12px;
}
.tech-caption span { margin-right: 18px; color: var(--cyan); }
.feature-list { border-top: 1px solid var(--line); }
.feature-item {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 18px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.feature-number { color: #058ba5; font-size: 11px; font-weight: 700; }
.feature-item h3 { margin: -4px 0 8px; font-size: 20px; }
.feature-item p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

.products { color: #fff; background: var(--navy); }
.section-heading-light > p:last-child { color: rgba(255,255,255,.54); }
.product-tabs { display: flex; gap: 36px; border-bottom: 1px solid rgba(255,255,255,.13); }
.product-tab {
  position: relative;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 0 7px;
  border: 0;
  color: rgba(255,255,255,.4);
  background: none;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
}
.product-tab::after { content: ""; position: absolute; right: 0; bottom: -1px; left: 0; height: 2px; background: var(--cyan); transform: scaleX(0); transition: transform .25s; }
.product-tab.active { color: #fff; }
.product-tab.active::after { transform: scaleX(1); }
.product-panel { display: grid; grid-template-columns: 1.18fr .82fr; margin-top: 48px; background: #0b2a47; }
.product-image { position: relative; padding: 48px; background: #edf6f7; }
.product-image img { width: 100%; height: 100%; min-height: 380px; object-fit: contain; mix-blend-mode: multiply; }
.image-index { position: absolute; left: 18px; bottom: 16px; color: #17455b; font-size: 9px; font-weight: 700; letter-spacing: .2em; }
.product-copy { padding: 66px 58px; }
.product-kicker { margin: 0 0 12px; color: var(--cyan); font-size: 11px; font-weight: 700; letter-spacing: .14em; }
.product-copy h3 { margin: 0; font-size: 46px; letter-spacing: -.04em; }
.product-copy > p:nth-of-type(2) { min-height: 82px; margin: 20px 0 28px; color: rgba(255,255,255,.58); font-size: 14px; line-height: 1.8; }
.product-copy ul { margin: 0; padding: 0; list-style: none; }
.product-copy li { padding: 12px 0; border-top: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.78); font-size: 12px; }
.product-copy li::before { content: "—"; margin-right: 12px; color: var(--cyan); }

.application-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; }
.application-card {
  min-height: 292px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  padding: 34px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.45);
  transition: transform .25s, box-shadow .25s, background .25s;
}
.application-card:hover { transform: translateY(-4px); background: #fff; box-shadow: 0 20px 50px rgba(14,42,66,.08); }
.application-card::after { content: ""; position: absolute; top: -65px; right: -65px; width: 170px; height: 170px; border: 1px solid rgba(0,155,184,.15); border-radius: 50%; }
.card-featured { color: #fff; border-color: var(--navy-2); background: var(--navy-2); }
.card-featured:hover { background: #0c3151; }
.app-icon { position: absolute; top: 31px; left: 33px; color: var(--cyan); font-size: 32px; }
.application-card p { margin: 0 0 10px; color: #07829a; font-size: 9px; font-weight: 700; letter-spacing: .15em; }
.card-featured p { color: var(--cyan); }
.application-card h3 { margin: 0 0 12px; font-size: 23px; }
.application-card > span:last-child { max-width: 440px; color: var(--muted); font-size: 13px; line-height: 1.75; }
.card-featured > span:last-child { color: rgba(255,255,255,.58); }

.parameters { color: #fff; background: linear-gradient(120deg,#083552,#061a2d); }
.parameter-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 100px; align-items: start; }
.parameter-intro > p { color: rgba(255,255,255,.53); }
.parameter-grid { display: grid; grid-template-columns: repeat(2,1fr); border-top: 1px solid rgba(255,255,255,.13); border-left: 1px solid rgba(255,255,255,.13); }
.parameter-grid > div { min-height: 170px; display: flex; flex-direction: column; justify-content: center; padding: 25px 34px; border-right: 1px solid rgba(255,255,255,.13); border-bottom: 1px solid rgba(255,255,255,.13); }
.parameter-grid span { color: rgba(255,255,255,.47); font-size: 11px; }
.parameter-grid strong { margin: 7px 0 3px; color: var(--cyan); font-size: 32px; font-weight: 600; }
.parameter-grid small { color: rgba(255,255,255,.38); font-size: 10px; }

.about { overflow: hidden; background: #fff; }
.about-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 90px; align-items: center; }
.about-mark {
  position: relative;
  color: var(--navy);
  font-size: clamp(160px, 19vw, 260px);
  line-height: .8;
  letter-spacing: -.15em;
  font-weight: 800;
}
.about-mark::after {
  content: "";
  position: absolute;
  width: 210px;
  height: 210px;
  right: -10px;
  top: -72px;
  border: 1px solid rgba(3,139,164,.22);
  border-radius: 50%;
}
.about-values { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; margin-top: 38px; padding-top: 28px; border-top: 1px solid var(--line); }
.about-values strong { display: block; margin-bottom: 7px; color: #07859e; font-size: 15px; }
.about-values span { color: var(--muted); font-size: 11px; }
.about-mission {
  margin: 28px 0 0;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .01em;
}

.platform { padding-bottom: 0; }
.platform-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.platform-cards .feature-item {
  display: block;
  padding: 40px 48px;
  border-bottom: 0;
  border-right: 1px solid var(--line);
}
.platform-cards .feature-item:first-child { padding-left: 0; }
.platform-cards .feature-item:last-child { border-right: 0; padding-right: 0; }
.platform-cards .feature-number { display: block; margin-bottom: 18px; }
.platform-cards .feature-item h3 { margin: 0 0 12px; }
.platform-stats {
  margin-top: 72px;
  padding: 42px 0 28px;
  color: #fff;
  background: linear-gradient(120deg, #083552, #061a2d);
}
.platform-trust {
  border-top: 0;
  padding: 0;
  grid-template-columns: 220px 1fr;
}
.platform-trust > p { color: rgba(255,255,255,.42); font-size: 12px; }
.platform-trust .trust-stats strong { font-size: 20px; }
.platform-note {
  margin: 18px auto 0;
  color: rgba(255,255,255,.38);
  font-size: 11px;
}
.platform-apps {
  padding: 42px 0 72px;
}
.platform-apps > p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 13px;
}
.platform-apps-line {
  color: var(--ink);
  font-size: 14px;
  line-height: 1.9;
  letter-spacing: .01em;
}
.platform-quote {
  padding: 88px 0;
  color: #fff;
  background: var(--navy);
  text-align: center;
}
.platform-quote p {
  margin: 0;
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.45;
  letter-spacing: -.03em;
  font-weight: 600;
}

.service { background: var(--paper); }

.service-stack { border-top: 1px solid var(--line); }
.service-part { padding: 56px 0; border-bottom: 1px solid var(--line); }
.service-part:last-child { border-bottom: 0; padding-bottom: 0; }
.service-part-head {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 18px;
  max-width: 880px;
  margin-bottom: 38px;
}
.service-index { color: #058ba5; font-size: 11px; font-weight: 700; letter-spacing: .06em; }
.service-part-head h3 { margin: -6px 0 10px; font-size: clamp(24px, 2.3vw, 30px); letter-spacing: -.035em; }
.service-part-head p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.85; }

.board-tabs { display: flex; gap: 34px; margin-left: 72px; border-bottom: 1px solid var(--line); }
.board-tab {
  position: relative;
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  padding: 0 0 8px;
  border: 0;
  color: var(--muted);
  background: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
}
.board-tab::after { content: ""; position: absolute; right: 0; bottom: -1px; left: 0; height: 2px; background: #058ba5; transform: scaleX(0); transition: transform .25s; }
.board-tab.active { color: var(--ink); }
.board-tab.active::after { transform: scaleX(1); }

.board-panel {
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  margin: 30px 0 0 72px;
  border: 1px solid var(--line);
  background: #fff;
}
.board-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 44px;
  background: #edf6f7;
  border-right: 1px solid var(--line);
}
.board-visual img { width: 100%; max-height: 300px; object-fit: contain; mix-blend-mode: multiply; }
.board-size {
  position: absolute;
  left: 20px;
  bottom: 16px;
  color: #17455b;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .18em;
}
.board-info { padding: 44px 42px; }
.board-code { margin: 0 0 12px; color: #07829a; font-size: 10px; font-weight: 700; letter-spacing: .18em; }
.board-info h4 { margin: 0; font-size: 26px; letter-spacing: -.025em; }
.board-info h4 span { margin-left: 10px; color: var(--muted); font-size: 13px; font-weight: 500; letter-spacing: 0; }
.board-desc { margin: 14px 0 22px; color: var(--muted); font-size: 13px; line-height: 1.8; }
.board-info ul { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.board-info li {
  position: relative;
  padding: 12px 0 12px 18px;
  border-bottom: 1px solid var(--line);
  color: #35485c;
  font-size: 12px;
  line-height: 1.7;
}
.board-info li::before { content: ""; position: absolute; left: 0; top: 19px; width: 7px; height: 1px; background: #058ba5; }
.board-info li:last-child { border-bottom: 0; }

.tool-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-left: 72px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.tool-item { padding: 34px 40px; border-right: 1px solid var(--line); }
.tool-item:first-child { padding-left: 0; }
.tool-item:last-child { border-right: 0; padding-right: 0; }
.tool-en { margin: 0; color: #07829a; font-size: 10px; font-weight: 700; letter-spacing: .2em; }
.tool-item h4 { margin: 14px 0 20px; font-size: 24px; letter-spacing: -.02em; }
.tool-item h4 span { margin-left: 9px; color: var(--muted); font-size: 12px; font-weight: 500; letter-spacing: 0; }
.tool-item ul { margin: 0; padding: 0; list-style: none; }
.tool-item li {
  position: relative;
  padding: 0 0 12px 18px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}
.tool-item li::before { content: ""; position: absolute; left: 0; top: 9px; width: 7px; height: 1px; background: #058ba5; }
.tool-item li:last-child { padding-bottom: 0; }

.service-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0 0 0 72px;
  padding: 0;
  list-style: none;
  counter-reset: step;
  border-left: 1px solid var(--line);
}
.service-steps li {
  counter-increment: step;
  padding: 28px 26px;
  border-right: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}
.service-steps li::before {
  content: "0" counter(step);
  display: block;
  margin-bottom: 14px;
  color: #058ba5;
  font-size: 11px;
  font-weight: 700;
}
.service-steps span { display: block; margin-bottom: 8px; color: var(--ink); font-size: 16px; font-weight: 600; letter-spacing: -.01em; }

.contact { position: relative; overflow: hidden; padding: 110px 0; color: #fff; background: #071c30; }
.contact::before { content: ""; position: absolute; inset: 0; opacity: .13; background-image: radial-gradient(var(--cyan) .8px, transparent .8px); background-size: 20px 20px; }
.contact-orb { position: absolute; width: 500px; height: 500px; right: -110px; top: -215px; border: 1px solid rgba(15,203,228,.2); border-radius: 50%; box-shadow: 0 0 100px rgba(15,203,228,.07) inset; }
.contact-layout { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: center; }
.contact-card { padding-left: 50px; border-left: 1px solid rgba(255,255,255,.18); }
.contact-card > p { margin: 0 0 34px; max-width: 500px; color: rgba(255,255,255,.56); font-size: 14px; line-height: 1.8; }
.contact-phone { display: block; color: var(--cyan); font-size: clamp(25px,3vw,39px); font-weight: 600; }
.contact-phone span { display: block; margin-bottom: 8px; color: rgba(255,255,255,.45); font-size: 10px; letter-spacing: .15em; }
.contact-meta { display: flex; gap: 30px; margin-top: 25px; color: rgba(255,255,255,.38); font-size: 10px; }

.site-footer { color: rgba(255,255,255,.42); background: #03111d; }
.footer-layout { min-height: 112px; display: grid; grid-template-columns: 220px 1fr auto; gap: 30px; align-items: center; font-size: 10px; }
.footer-brand img { width: auto; height: 40px; max-width: 190px; object-fit: contain; }
.footer-layout > a:last-child { color: rgba(255,255,255,.68); }

.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .75s ease, transform .75s ease; }
.js .reveal.is-visible { opacity: 1; transform: translateY(0); }
.feature-item:nth-child(2), .application-card:nth-child(2) { transition-delay: .08s; }
.feature-item:nth-child(3), .application-card:nth-child(3) { transition-delay: .16s; }
.application-card:nth-child(4) { transition-delay: .24s; }

@media (max-width: 1200px) {
  .site-nav { gap: 18px; font-size: 12px; }
  .site-nav .nav-cta { padding: 10px 14px; gap: 12px; }
  .hero-layout { gap: 48px; }
  .tech-layout { gap: 56px; }
  .parameter-layout { gap: 56px; }
  .platform-cards .feature-item { padding: 36px 32px; }
  .platform-trust .trust-stats strong { font-size: 17px; }
  .board-info { padding: 36px 32px; }
  .tool-item { padding: 30px 28px; }
  .service-steps li { padding: 26px 18px; }
  .service-steps span { font-size: 15px; }
}

@media (max-width: 980px) {
  html { scroll-padding-top: 84px; }
  .menu-toggle {
    width: 44px;
    height: 44px;
    display: grid;
    place-content: center;
    gap: 7px;
    border: 0;
    background: transparent;
    cursor: pointer;
  }
  .menu-toggle span { width: 24px; height: 1px; background: #fff; transition: transform .25s; }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .site-nav {
    position: fixed;
    inset: 78px 0 auto;
    min-height: calc(100vh - 78px);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 28px 24px;
    padding-bottom: max(28px, env(safe-area-inset-bottom));
    background: rgba(6,26,45,.99);
  }
  .js .site-nav {
    visibility: hidden;
    pointer-events: none;
    transform: translateX(100%);
    transition: transform .3s, visibility .3s;
  }
  .js .site-nav.open { visibility: visible; pointer-events: auto; transform: translateX(0); }
  html:not(.js) .site-nav {
    position: static;
    min-height: 0;
    padding: 0;
    background: transparent;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 12px 18px;
    justify-content: flex-end;
  }
  html:not(.js) .menu-toggle { display: none; }
  html:not(.js) .site-nav > a:not(.nav-cta) {
    display: inline-flex;
    min-height: 0;
    padding: 0;
    border: 0;
    font-size: 12px;
  }
  .site-nav > a:not(.nav-cta) { display: block; min-height: 52px; padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.1); font-size: 17px; }
  .site-nav .nav-cta { min-height: 48px; margin-top: 26px; justify-content: space-between; }
  html:not(.js) .site-nav .nav-cta { margin-top: 0; min-height: 40px; }
  .hero { min-height: auto; }
  .hero-layout { grid-template-columns: 1fr; padding: 100px 0 72px; gap: 64px; }
  .hero-copy { max-width: 720px; }
  .hero h1 { font-size: clamp(42px, 7vw, 58px); }
  .hero-visual { width: min(700px, 100%); margin: 0 auto; }
  .product-stage { transform: none; }
  .chip-one { left: 0; bottom: -28px; }
  .chip-two { right: 0; top: 36px; }
  .trust-bar {
    grid-template-columns: 1fr;
    gap: 22px;
    padding: 28px 0 40px;
  }
  .trust-stats {
    margin-top: 0;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px 0;
  }
  .trust-stats > div {
    padding: 0 18px;
    border-left: 0;
    border-top: 1px solid rgba(255,255,255,.12);
    padding-top: 18px;
  }
  .trust-stats > div:nth-child(-n+2) { border-top: 0; padding-top: 0; }
  .section { padding: 108px 0; }
  .tech-layout,
  .about-layout,
  .contact-layout,
  .parameter-layout { grid-template-columns: 1fr; gap: 48px; }
  .tech-caption { right: 12px; bottom: 18px; }
  .product-panel { grid-template-columns: 1fr; }
  .product-copy { padding: 48px 40px; }
  .application-grid { gap: 14px; }
  .platform-cards { grid-template-columns: 1fr; }
  .platform-cards .feature-item {
    padding: 28px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .platform-cards .feature-item:first-child { padding-left: 0; }
  .platform-cards .feature-item:last-child {
    border-bottom: 0;
    padding-right: 0;
  }
  .platform-stats { margin-top: 56px; padding: 36px 0 24px; }
  .platform-trust { grid-template-columns: 1fr; gap: 22px; }
  .platform-trust .trust-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .platform-trust .trust-stats strong { font-size: 18px; line-height: 1.35; }
  .platform-apps-line { font-size: 13px; }
  .platform-quote { padding: 72px 0; }
  .service-part { padding: 44px 0; }
  .board-tabs, .board-panel, .tool-row, .service-steps { margin-left: 0; }
  .board-panel { grid-template-columns: 1fr; margin-top: 26px; }
  .board-visual { border-right: 0; border-bottom: 1px solid var(--line); }
  .board-visual img { max-height: 260px; }
  .tool-row { grid-template-columns: 1fr; border-bottom: 0; }
  .tool-item {
    padding: 28px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .tool-item:first-child { padding-top: 28px; }
  .service-steps { grid-template-columns: repeat(2, 1fr); border-left: 0; border-top: 1px solid var(--line); }
  .service-steps li { padding: 26px 22px 26px 0; }
  .service-steps li:nth-child(2n) { padding-left: 22px; border-right: 0; }
  .service-steps li:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .about-mark { font-size: clamp(140px, 22vw, 200px); }
  .about-values { grid-template-columns: repeat(3, 1fr); }
  .footer-layout { gap: 20px; }
}

@media (max-width: 720px) {
  html { scroll-padding-top: 76px; }
  .container { width: min(100% - 28px, 1180px); }
  .nav-wrap { height: 68px; }
  .brand img { height: 36px; max-width: 168px; }
  .site-nav {
    inset: 68px 0 auto;
    min-height: calc(100dvh - 68px);
  }
  .hero { padding-top: 68px; }
  .hero-layout { gap: 64px; padding: 72px 0 70px; }
  .hero h1 { font-size: clamp(34px, 10vw, 42px); }
  .hero-lead { font-size: 14px; margin-top: 20px; }
  .hero-actions { align-items: stretch; flex-direction: column; margin-top: 28px; }
  .button { width: 100%; justify-content: space-between; }
  .product-stage { padding: 16px; }
  .product-stage img { aspect-ratio: 1.55; }
  .visual-label { top: -28px; right: 0; }
  .chip-one { left: 0; bottom: -34px; }
  .chip-two { right: 0; top: 24px; }
  .data-chip { min-width: 0; padding: 10px 12px; }
  .data-chip strong { font-size: 15px; }
  .signal-line { display: none; }
  .trust-bar { padding: 36px 0 28px; }
  .trust-stats { grid-template-columns: 1fr 1fr; gap: 20px 12px; }
  .trust-stats > div { padding: 0 8px; }
  .trust-stats strong { font-size: 20px; }
  .trust-stats span { font-size: 10px; line-height: 1.45; }
  .section { padding: 84px 0; }
  .section-heading { margin-bottom: 36px; }
  .section-heading h2,
  .parameter-intro h2,
  .about-copy h2,
  .contact-heading h2,
  .platform-quote p { font-size: clamp(30px, 8vw, 36px); }
  .section-heading > p:last-child,
  .parameter-intro > p,
  .about-copy > p { font-size: 14px; }
  .tech-layout, .about-layout, .contact-layout { gap: 40px; }
  .image-frame { padding: 18px; }
  .tech-caption { position: static; margin-top: 14px; width: fit-content; }
  .product-tabs {
    gap: 8px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .product-tabs::-webkit-scrollbar { display: none; }
  .product-tab {
    flex: 0 0 auto;
    white-space: nowrap;
    padding: 0 4px 10px;
  }
  .product-panel { margin-top: 24px; }
  .product-image { padding: 16px; }
  .product-image img { min-height: 200px; }
  .product-copy { padding: 28px 20px; }
  .product-copy h3 { font-size: 34px; }
  .product-copy > p:nth-of-type(2) { min-height: 0; }
  .application-grid { grid-template-columns: 1fr; }
  .application-card { min-height: 220px; padding: 28px; }
  .parameter-grid { grid-template-columns: 1fr; }
  .parameter-grid > div { min-height: 120px; padding: 22px 20px; }
  .about-layout { gap: 20px; }
  .about-mark { font-size: 120px; line-height: .75; }
  .about-mark::after { width: 120px; height: 120px; right: 0; top: -36px; }
  .about-values {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .about-mission { font-size: 13px; line-height: 1.7; }
  .platform-stats { margin-top: 40px; }
  .platform-trust .trust-stats {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .platform-trust .trust-stats > div {
    border-left: 0;
    border-top: 1px solid rgba(255,255,255,.12);
    padding: 16px 0 0;
  }
  .platform-trust .trust-stats > div:first-child {
    border-top: 0;
    padding-top: 0;
  }
  .platform-note { font-size: 10px; line-height: 1.6; }
  .platform-apps { padding: 32px 0 56px; }
  .platform-apps-line { font-size: 13px; word-break: break-word; }
  .service-part { padding: 36px 0; }
  .service-part-head { grid-template-columns: 1fr; gap: 10px; margin-bottom: 28px; }
  .service-part-head h3 { margin: 0 0 8px; font-size: clamp(22px, 6.2vw, 28px); }
  .board-tabs {
    gap: 8px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .board-tabs::-webkit-scrollbar { display: none; }
  .board-tab { flex: 0 0 auto; white-space: nowrap; padding: 0 4px 10px; }
  .board-visual { padding: 24px 20px 30px; }
  .board-visual img { max-height: 190px; }
  .board-info { padding: 26px 20px 28px; }
  .board-info h4 { font-size: 21px; }
  .board-info h4 span { display: block; margin: 6px 0 0; }
  .tool-item h4 { font-size: 21px; }
  .tool-item h4 span { display: block; margin: 6px 0 0; }
  .service-steps { grid-template-columns: 1fr; }
  .service-steps li,
  .service-steps li:nth-child(2n) { padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .service-steps li:last-child { border-bottom: 0; padding-bottom: 0; }
  .service-steps span { font-size: 15px; }
  .platform-quote { padding: 64px 20px; }
  .contact { padding: 80px 0; }
  .contact-card { padding: 28px 0 0; border-left: 0; border-top: 1px solid rgba(255,255,255,.18); }
  .contact-meta { flex-direction: column; gap: 8px; }
  .contact-phone { word-break: break-all; }
  .footer-layout {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 28px 0 calc(28px + env(safe-area-inset-bottom));
    text-align: left;
  }
}

@media (max-width: 420px) {
  .trust-stats,
  .platform-trust .trust-stats { grid-template-columns: 1fr; }
  .trust-stats > div {
    border-top: 1px solid rgba(255,255,255,.12);
    padding-top: 14px;
  }
  .trust-stats > div:first-child { border-top: 0; padding-top: 0; }
  .hero-actions .button { font-size: 12px; }
  .data-chip { position: static; display: inline-flex; flex-direction: column; margin: 12px 8px 0 0; }
  .hero-visual { display: flex; flex-direction: column; }
  .product-stage { order: -1; }
}

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