:root {
  --ink: #12324f;
  --muted: #60758a;
  --line: #d6e5f1;
  --sky: #62d6ff;
  --blue: #126cb3;
  --green: #62d6ff;
  --amber: #62d6ff;
  --paper: #f4f8fc;
  --white: #ffffff;
  --deep: #073a63;
  --shadow: 0 22px 55px rgba(18, 50, 79, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #f7fbff;
  font-family:
    "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 24px;
  align-items: center;
  min-height: 78px;
  padding: 14px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgba(220, 231, 240, 0.82);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
}

.brand img {
  width: clamp(168px, 17vw, 246px);
  height: auto;
}

.desktop-nav {
  justify-self: center;
  display: flex;
  gap: clamp(16px, 2.2vw, 34px);
  color: #36516e;
  font-size: 15px;
}

.desktop-nav a,
.mobile-nav a {
  transition: color 0.2s ease;
}

.desktop-nav a:hover,
.mobile-nav a:hover {
  color: #0f76c8;
}

.header-action,
.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 6px;
  font-weight: 700;
  white-space: nowrap;
}

.header-action,
.primary-button {
  color: var(--white);
  background: var(--blue);
  box-shadow: 0 12px 26px rgba(24, 95, 175, 0.22);
}

.secondary-button {
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.mobile-nav {
  display: none;
}

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: calc(92vh - 78px);
  padding: clamp(42px, 7vw, 92px) clamp(18px, 5vw, 78px);
  overflow: hidden;
  background: #0b4a78;
}

.hero-bg-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center top;
  z-index: 0;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 58, 99, 0.84) 0%, rgba(10, 82, 130, 0.62) 38%, rgba(16, 111, 176, 0.2) 68%, rgba(16, 111, 176, 0.04) 100%),
    linear-gradient(180deg, rgba(7, 58, 99, 0.08) 0%, rgba(7, 58, 99, 0.34) 100%);
  pointer-events: none;
  z-index: 1;
}

.hero::after {
  content: "";
  position: absolute;
  right: -12vw;
  bottom: -24vw;
  width: 58vw;
  height: 58vw;
  border: 1px solid rgba(118, 223, 255, 0.22);
  border-radius: 50%;
  z-index: 1;
}

.hero-copy,
.hero-tags {
  position: relative;
  z-index: 2;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin-bottom: 22px;
  font-size: clamp(38px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: 0;
  color: var(--white);
}

h1 span {
  display: block;
  white-space: nowrap;
}

.hero-lede {
  max-width: 720px;
  margin-bottom: 30px;
  color: #c7d6e6;
  font-size: clamp(18px, 2.1vw, 24px);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-tags {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  width: min(680px, 100%);
  margin-top: clamp(26px, 4vw, 44px);
  border: 1px solid rgba(194, 231, 255, 0.36);
  border-radius: 8px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
}

.hero-tags div {
  padding: 18px 20px;
  background: rgba(8, 55, 93, 0.48);
}

.hero-tags strong {
  display: block;
  color: var(--white);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.2;
}

.hero-tags span {
  display: block;
  margin-top: 7px;
  color: #cde4f5;
  font-size: 13px;
}

.metric-strip {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.metric-strip {
  margin-top: 16px;
}

.metric-strip div {
  min-width: 0;
}

.metric-strip strong {
  display: block;
  color: var(--sky);
  font-size: clamp(22px, 2.7vw, 34px);
  line-height: 1.1;
}

.metric-strip span {
  display: block;
  margin-top: 6px;
  color: #8393a6;
  font-size: 13px;
  line-height: 1.45;
}

.intro-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(98, 214, 255, 0.1), transparent 35%),
    var(--deep);
  color: var(--white);
}

.intro-band div {
  min-height: 168px;
  padding: clamp(24px, 4vw, 46px);
  border-right: 1px solid rgba(255, 255, 255, 0.14);
}

.intro-band div:last-child {
  border-right: 0;
}

.intro-band span {
  color: var(--sky);
  font-weight: 800;
}

.intro-band p {
  margin: 14px 0 0;
  font-size: clamp(19px, 2vw, 28px);
  line-height: 1.45;
}

.section {
  padding: clamp(58px, 8vw, 112px) clamp(18px, 5vw, 78px);
}

.section-heading {
  max-width: 900px;
  margin-bottom: clamp(28px, 4.5vw, 54px);
}

.section-heading.compact {
  max-width: 760px;
}

.section-heading h2,
.contact-section h2 {
  margin-bottom: 16px;
  font-size: clamp(32px, 4.5vw, 58px);
  line-height: 1.14;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.contact-section p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.about-grid-two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.about-grid article {
  min-height: 260px;
  padding: clamp(24px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(20, 181, 223, 0.05), transparent 38%),
    var(--white);
  box-shadow: 0 16px 34px rgba(13, 27, 45, 0.06);
}

.about-grid span {
  color: var(--blue);
  font-weight: 900;
}

.about-grid h3 {
  margin: 18px 0 10px;
  font-size: 24px;
}

.about-grid p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.72;
}

.product-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
  gap: clamp(22px, 4vw, 46px);
  align-items: center;
  margin-bottom: 18px;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(120deg, rgba(98, 214, 255, 0.14), transparent 46%),
    linear-gradient(90deg, rgba(18, 108, 179, 0.08), transparent 72%),
    var(--paper);
}

.product-summary h3 {
  margin-bottom: 12px;
  font-size: clamp(26px, 3vw, 38px);
}

.product-summary p {
  margin-bottom: 0;
  color: #4c6075;
  font-size: 17px;
  line-height: 1.78;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.feature-card,
.service-list article,
.team-grid article,
.case-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.feature-card::before,
.service-list article::before,
.case-card::before,
.team-grid article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--sky));
}

.feature-card {
  min-height: 248px;
  padding: 24px;
}

.feature-card span {
  color: var(--sky);
  font-weight: 900;
}

.feature-card h3,
.service-list h3,
.case-card h3,
.team-grid h3 {
  margin: 18px 0 10px;
  font-size: 22px;
  line-height: 1.3;
}

.feature-card p,
.service-list p,
.case-card p,
.team-grid p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.72;
}

.services-section {
  background: linear-gradient(180deg, #eef6fc 0%, #ffffff 100%);
}

.service-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.service-list article {
  min-height: 270px;
  padding: clamp(24px, 3vw, 34px);
  box-shadow: 0 16px 34px rgba(13, 27, 45, 0.06);
}

.service-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 8px;
  color: var(--white);
  background: var(--blue);
  font-weight: 900;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.case-card {
  min-height: 280px;
  padding: clamp(22px, 3vw, 30px);
  background:
    linear-gradient(180deg, rgba(98, 214, 255, 0.05), transparent 50%),
    var(--white);
}

.case-card div {
  padding-right: 6px;
}

.case-card span {
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.case-uniform-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 16px 34px rgba(18, 50, 79, 0.07);
}

.case-uniform-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--sky));
}

.case-uniform-card span {
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.case-uniform-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.case-uniform-card {
  padding: 26px;
}

.case-uniform-card h3 {
  margin: 16px 0 18px;
  font-size: clamp(24px, 2.5vw, 34px);
  line-height: 1.25;
}

.case-uniform-card dl {
  display: grid;
  gap: 14px;
  margin: 0;
}

.case-uniform-card dt {
  color: var(--blue);
  font-weight: 900;
}

.case-uniform-card dd {
  margin: 6px 0 0;
  color: var(--muted);
  line-height: 1.68;
}

.lars-diagram {
  margin: 18px 0;
  padding: clamp(26px, 4vw, 44px);
  border-radius: 8px;
  color: var(--white);
  background:
    linear-gradient(120deg, rgba(98, 214, 255, 0.14), transparent 45%),
    linear-gradient(180deg, #0b4a78 0%, var(--deep) 100%);
}

.diagram-header span {
  color: var(--sky);
  font-size: 13px;
  font-weight: 900;
}

.diagram-header h2 {
  margin: 12px 0 26px;
  font-size: clamp(28px, 4vw, 48px);
}

.diagram-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.diagram-flow article {
  position: relative;
  min-height: 220px;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.07);
}

.diagram-flow article:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -11px;
  width: 20px;
  height: 1px;
  background: var(--sky);
}

.diagram-flow span {
  color: var(--sky);
  font-weight: 900;
}

.diagram-flow h3 {
  margin: 16px 0 10px;
  font-size: 22px;
}

.diagram-flow p {
  color: #d7e8f4;
  line-height: 1.68;
}

.diagram-layer {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.diagram-layer span {
  padding: 13px 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  color: #d7e8f4;
  text-align: center;
}

.case-feature-section {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.7fr);
  gap: clamp(18px, 3vw, 28px);
  align-items: stretch;
}

.case-feature {
  min-height: 430px;
  padding: clamp(30px, 5vw, 58px);
  border-radius: 8px;
  color: var(--white);
  background:
    linear-gradient(120deg, rgba(98, 214, 255, 0.16), transparent 48%),
    linear-gradient(180deg, #0b4a78 0%, var(--deep) 100%);
}

.case-feature span,
.case-side-list span {
  color: var(--sky);
  font-size: 13px;
  font-weight: 900;
}

.case-feature h2 {
  max-width: 780px;
  margin: 18px 0;
  font-size: clamp(34px, 4.5vw, 58px);
  line-height: 1.12;
}

.case-feature p {
  max-width: 820px;
  color: #d7e8f4;
  font-size: 18px;
  line-height: 1.8;
}

.case-feature dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 34px 0 0;
}

.case-feature dl div {
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.07);
}

.case-feature dt {
  color: var(--sky);
  font-weight: 900;
}

.case-feature dd {
  margin: 8px 0 0;
  color: #d7e8f4;
  line-height: 1.65;
}

.case-side-list {
  display: grid;
  gap: 18px;
}

.case-side-list article {
  padding: clamp(24px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 16px 34px rgba(18, 50, 79, 0.08);
}

.case-side-list h3 {
  margin: 16px 0 10px;
  font-size: 26px;
}

.case-side-list p {
  color: var(--muted);
  line-height: 1.72;
}

.cases-light-section {
  padding-top: 0;
}

.case-masonry {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-auto-flow: dense;
  gap: 18px;
}

.case-masonry .case-card {
  min-height: 240px;
}

.case-masonry .case-card.tall {
  grid-row: span 2;
  min-height: 498px;
  background:
    linear-gradient(180deg, rgba(18, 108, 179, 0.12), transparent 45%),
    var(--white);
}

.case-masonry .case-card.wide {
  grid-column: span 2;
}

.team-section {
  background:
    linear-gradient(120deg, rgba(98, 214, 255, 0.12), transparent 40%),
    linear-gradient(180deg, #0b4a78 0%, var(--deep) 100%);
  color: var(--white);
}

.team-section .section-heading p:not(.eyebrow),
.team-section .team-grid p {
  color: #bfd0df;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.team-grid article {
  min-height: 228px;
  padding: 24px;
  background:
    linear-gradient(180deg, rgba(98, 214, 255, 0.05), transparent 48%),
    var(--white);
  box-shadow: 0 16px 34px rgba(18, 50, 79, 0.07);
}

.team-grid span {
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 440px);
  gap: clamp(28px, 6vw, 80px);
  align-items: center;
  padding: clamp(58px, 8vw, 112px) clamp(18px, 5vw, 78px);
  background:
    linear-gradient(90deg, rgba(18, 108, 179, 0.08), transparent 58%),
    linear-gradient(180deg, #ffffff 0%, #eef6fc 100%),
    var(--white);
}

.contact-section address {
  display: grid;
  gap: 18px;
  padding: 28px;
  border-left: 4px solid var(--sky);
  background: var(--paper);
  font-style: normal;
  line-height: 1.65;
}

.contact-section address a {
  color: var(--blue);
  font-size: 24px;
  font-weight: 900;
  overflow-wrap: anywhere;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(18px, 5vw, 78px);
  color: #6c7c8d;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.home-hero {
  min-height: calc(100vh - 78px);
}

.home-hero .hero-bg-image {
  object-position: center center;
}

.home-hero::before {
  background:
    linear-gradient(180deg, rgba(7, 58, 99, 0.16) 0%, rgba(7, 58, 99, 0.5) 100%),
    linear-gradient(90deg, rgba(7, 58, 99, 0.54) 0%, rgba(10, 82, 130, 0.28) 45%, rgba(10, 82, 130, 0.04) 100%);
}

.home-hero .hero-copy {
  max-width: 940px;
}

.home-hero h1 {
  font-size: clamp(48px, 7vw, 92px);
}

.home-hero .hero-lede {
  max-width: 780px;
}

.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 34px;
  z-index: 2;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
}

.scroll-cue::after {
  content: "";
  display: block;
  width: 1px;
  height: 34px;
  margin: 10px auto 0;
  background: rgba(255, 255, 255, 0.5);
}

.page-hero {
  position: relative;
  padding: clamp(92px, 12vw, 160px) clamp(18px, 6vw, 96px) clamp(54px, 7vw, 92px);
  overflow: hidden;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(7, 58, 99, 0.92), rgba(12, 87, 138, 0.74)),
    url("assets/low-altitude-hero.png");
  background-size: cover;
  background-position: center;
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(98, 214, 255, 0.7), transparent);
}

.page-hero .eyebrow {
  color: var(--sky);
}

.page-hero h1 {
  max-width: 980px;
  margin-bottom: 18px;
  color: var(--white);
  font-size: clamp(40px, 6vw, 76px);
  line-height: 1.08;
}

.page-hero p {
  max-width: 880px;
  margin-bottom: 0;
  color: #d7e8f4;
  font-size: clamp(17px, 1.8vw, 22px);
  line-height: 1.8;
}

.page-section {
  padding: clamp(58px, 8vw, 108px) clamp(18px, 6vw, 96px);
}

.team-section-page {
  background:
    linear-gradient(180deg, #f7fbff 0%, #ffffff 42%, #eef6fc 100%);
}

.contact-hero {
  min-height: calc(100vh - 78px);
  display: grid;
  align-content: center;
}

.contact-email {
  display: grid;
  gap: 10px;
  width: min(560px, 100%);
  margin-top: 38px;
  padding: 26px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.28);
  font-style: normal;
}

.contact-email span {
  color: var(--sky);
  font-weight: 800;
}

.contact-email a {
  color: var(--white);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 900;
  overflow-wrap: anywhere;
}

@media (max-width: 1080px) {
  .desktop-nav,
  .header-action {
    display: none;
  }

  .site-header {
    grid-template-columns: auto 1fr auto;
  }

  .menu-button {
    display: block;
    grid-column: 3;
  }

  .mobile-nav.open {
    position: fixed;
    top: 78px;
    left: 0;
    right: 0;
    z-index: 19;
    display: grid;
    gap: 2px;
    padding: 10px 18px 16px;
    border-bottom: 1px solid var(--line);
    background: var(--white);
    box-shadow: 0 18px 32px rgba(16, 32, 51, 0.12);
  }

  .mobile-nav a {
    padding: 13px 4px;
    color: #36516e;
  }

  .hero,
  .product-summary,
  .contact-section,
  .case-feature-section {
    grid-template-columns: 1fr;
  }

  .about-grid,
  .product-grid,
  .service-list,
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-masonry {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .case-uniform-grid,
  .diagram-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .diagram-flow article:not(:last-child)::after {
    display: none;
  }

  .case-masonry .case-card.wide,
  .case-masonry .case-card.tall {
    grid-column: span 1;
    grid-row: span 1;
    min-height: 240px;
  }
}

@media (max-width: 760px) {
  .site-header {
    min-height: 68px;
    padding: 12px 16px;
  }

  .brand img {
    width: 156px;
  }

  .mobile-nav.open {
    top: 68px;
  }

  .hero {
    min-height: auto;
    padding-top: 36px;
  }

  .home-hero {
    min-height: calc(100vh - 68px);
  }

  .scroll-cue {
    display: none;
  }

  .hero-actions {
    display: grid;
  }

  .intro-band,
  .about-grid,
  .about-grid-two,
  .product-grid,
  .service-list,
  .case-grid,
  .case-masonry,
  .case-uniform-grid,
  .diagram-flow,
  .diagram-layer,
  .case-feature dl,
  .team-grid,
  .case-card,
  footer {
    grid-template-columns: 1fr;
  }

  .intro-band div {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  }

  .metric-strip {
    display: grid;
    grid-template-columns: 1fr;
  }

  .feature-card,
  .service-list article,
  .team-grid article {
    min-height: auto;
  }

  .case-card {
    display: grid;
  }

  footer {
    display: grid;
  }
}


.desktop-nav a[href='/lars'],
.mobile-nav a[href='/lars'] {
  color: #0f8eb8;
  font-weight: 800;
}