:root {
  --navy: #06142e;
  --navy-deep: #030b19;
  --navy-soft: #0a224b;
  --blue: #1558e8;
  --blue-bright: #2f78ff;
  --blue-light: #dce9ff;
  --white: #ffffff;
  --text: #eef4ff;
  --muted: #b8c6df;
  --line: #1b3766;
  --max-width: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--navy-deep);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.container {
  width: min(var(--max-width), calc(100% - 40px));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 12px;
  z-index: 1000;
  padding: 10px 14px;
  background: var(--white);
  color: #000000;
  font-weight: 700;
}

.skip-link:focus {
  left: 12px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #040d1f;
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.brand img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.94rem;
  font-weight: 700;
}

.main-nav a:not(.nav-button):hover,
.main-nav a:not(.nav-button):focus-visible {
  color: #76a7ff;
}

.nav-button {
  padding: 10px 15px;
  background: var(--blue);
  border: 1px solid var(--blue);
  color: var(--white);
}

.nav-button:hover,
.nav-button:focus-visible {
  background: #0d49c9;
}

.menu-button {
  display: none;
  width: 44px;
  height: 40px;
  border: 1px solid var(--line);
  background: var(--navy);
  color: var(--white);
  font-size: 1.2rem;
  cursor: pointer;
}

.hero {
  padding: 34px 0 54px;
  background: var(--navy-deep);
  border-bottom: 1px solid var(--line);
}

.hero-banner {
  width: 100%;
  border: 1px solid #214e94;
  background: var(--navy);
}

.hero-bottom {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 36px;
  padding: 34px 4px 0;
}

.eyebrow,
.section-label {
  margin: 0 0 9px;
  color: #78a9ff;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.section-label-light {
  color: #bcd4ff;
}

.hero h1,
.section h2 {
  margin: 0;
  line-height: 1.12;
  letter-spacing: -0.025em;
}

.hero h1 {
  max-width: 760px;
  font-size: clamp(2rem, 4.5vw, 3.7rem);
}

.hero p:not(.eyebrow) {
  max-width: 800px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 18px;
  border: 1px solid transparent;
  font-weight: 800;
  text-align: center;
}

.button-primary {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--white);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: #0d49c9;
}

.button-outline {
  background: transparent;
  border-color: #4f82db;
  color: var(--white);
}

.button-outline:hover,
.button-outline:focus-visible {
  background: #0b2551;
}

.button-light {
  background: var(--white);
  border-color: var(--white);
  color: #08183a;
}

.button-light:hover,
.button-light:focus-visible {
  background: #dce9ff;
}

.section {
  padding: 76px 0;
  border-bottom: 1px solid var(--line);
}

.section h2 {
  font-size: clamp(1.9rem, 3.5vw, 3rem);
}

.section p {
  color: var(--muted);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 56px;
  align-items: center;
}

.about-grid > div:first-child p:not(.section-label) {
  max-width: 720px;
  margin: 17px 0 0;
}

.brand-panel {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 24px;
  background: var(--navy);
  border: 1px solid #244a84;
}

.brand-panel img {
  width: 118px;
  height: 118px;
  object-fit: contain;
}

.brand-panel div {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.brand-panel strong {
  font-size: 1.25rem;
}

.brand-panel span {
  color: var(--muted);
}

.brand-panel a {
  margin-top: 8px;
  color: #82b0ff;
  font-weight: 800;
}

.section-blue {
  background: #09245a;
}

.section-intro {
  max-width: 760px;
  margin: 14px 0 0;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.card {
  min-height: 178px;
  padding: 24px;
  background: #071a3d;
  border: 1px solid #315c9e;
}

.card h3 {
  margin: 0;
  font-size: 1.3rem;
}

.card p {
  margin: 10px 0 0;
  color: #c6d5ef;
}

.purchase-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 58px;
  align-items: start;
}

.purchase-copy p:not(.section-label) {
  margin: 16px 0 24px;
}

.purchase-list {
  border-top: 1px solid #23487e;
}

.list-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid #23487e;
}

.list-item > span {
  color: #6ea2ff;
  font-weight: 800;
}

.list-item h3 {
  margin: 0;
  font-size: 1.16rem;
}

.list-item p {
  margin: 5px 0 0;
}

.section-dark {
  background: var(--navy);
}

.callout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 44px;
  padding: 40px;
  background: #0b2e70;
  border: 1px solid #3a6eb9;
}

.callout p:not(.section-label) {
  max-width: 760px;
  margin: 12px 0 0;
  color: #cfddf5;
}

.site-footer {
  padding: 28px 0;
  background: #020816;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.footer-brand img {
  width: 38px;
  height: 38px;
  object-fit: contain;
}

.footer-inner p {
  margin: 0;
  color: #8ea1c3;
  font-size: 0.84rem;
  text-align: right;
}

@media (max-width: 880px) {
  .menu-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    padding: 18px 20px 22px;
    background: #040d1f;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .main-nav.is-open {
    display: flex;
  }

  .main-nav a {
    padding: 10px 4px;
  }

  .nav-button {
    margin-top: 5px;
    text-align: center;
  }

  .hero-bottom,
  .about-grid,
  .purchase-grid {
    grid-template-columns: 1fr;
  }

  .hero-bottom {
    align-items: start;
    gap: 24px;
  }

  .hero-bottom .button {
    justify-self: start;
  }

  .about-grid,
  .purchase-grid {
    gap: 34px;
  }

  .callout {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(100% - 28px, var(--max-width));
  }

  .brand span {
    font-size: 0.94rem;
  }

  .brand img {
    width: 42px;
    height: 42px;
  }

  .hero {
    padding-top: 20px;
  }

  .hero-bottom {
    padding-top: 24px;
  }

  .section {
    padding: 58px 0;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .brand-panel {
    align-items: flex-start;
    flex-direction: column;
  }

  .brand-panel img {
    width: 100px;
    height: 100px;
  }

  .callout {
    padding: 28px 22px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-inner p {
    text-align: left;
  }
}