:root {
  color-scheme: dark;
  --navy: #071423;
  --navy-soft: #0d2032;
  --panel: #122b3e;
  --line: rgba(168, 222, 236, 0.2);
  --text: #f8fbff;
  --muted: #b7c9d5;
  --cyan: #63e6f2;
  --orange: #ff7d33;
  --yellow: #ffd166;
  --max-width: 1100px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--navy);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 85% 12%, rgba(99, 230, 242, 0.13), transparent 26rem),
    linear-gradient(155deg, #071423 0%, #091a2b 52%, #071423 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a {
  color: var(--cyan);
  text-underline-offset: 0.2em;
}

a:hover {
  color: #b9f7ff;
}

.site-header,
main,
footer {
  width: min(calc(100% - 2rem), var(--max-width));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 5.25rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  gap: 0.7rem;
  align-items: center;
  color: var(--text);
  font-weight: 900;
  letter-spacing: 0.09em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2.15rem;
  height: 2.15rem;
  place-items: center;
  transform: skew(-8deg);
  border: 2px solid var(--cyan);
  background: var(--orange);
  box-shadow: 4px 4px 0 rgba(99, 230, 242, 0.28);
  color: #071423;
  font-size: 1.2rem;
  font-style: italic;
}

nav,
footer div {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
}

nav a,
footer a {
  color: var(--muted);
  font-weight: 700;
  text-decoration: none;
}

nav a[aria-current="page"],
footer a[aria-current="page"] {
  color: var(--cyan);
}

.hero {
  min-height: 34rem;
  display: grid;
  align-content: center;
  max-width: 52rem;
  padding-block: 6rem;
}

.eyebrow {
  margin-bottom: 1rem;
  color: var(--orange);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.18em;
}

h1,
h2 {
  margin-top: 0;
  line-height: 1.05;
}

h1 {
  max-width: 15ch;
  margin-bottom: 1.4rem;
  font-size: clamp(3.2rem, 10vw, 6.6rem);
  font-weight: 950;
  letter-spacing: -0.06em;
}

h2 {
  margin-bottom: 0.75rem;
  font-size: clamp(1.45rem, 4vw, 2.2rem);
  letter-spacing: -0.035em;
}

p,
li {
  color: var(--muted);
}

.hero-copy {
  max-width: 42rem;
  margin: 0;
  font-size: clamp(1.1rem, 2.8vw, 1.42rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 3.25rem;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.2rem;
  border: 2px solid transparent;
  font-weight: 850;
  text-decoration: none;
}

.button.primary {
  background: var(--orange);
  color: #071423;
}

.button.primary:hover {
  background: #ff9b64;
  color: #071423;
}

.button.secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.feature-card,
.plain-panel,
.document,
.contact-card {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(18, 43, 62, 0.94), rgba(10, 29, 45, 0.94));
  box-shadow: 0 1.4rem 4rem rgba(0, 0, 0, 0.18);
}

.feature-card {
  min-height: 17rem;
  padding: 1.6rem;
}

.feature-number {
  display: block;
  margin-bottom: 3rem;
  color: var(--yellow);
  font-weight: 900;
}

.feature-card p {
  margin-bottom: 0;
}

.plain-panel {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 3rem;
  align-items: center;
  margin-block: 1rem 6rem;
  padding: clamp(1.6rem, 5vw, 3rem);
}

.plain-panel h2 {
  margin-bottom: 0;
}

.plain-panel p {
  margin: 0;
  font-size: 1.08rem;
}

.document-shell {
  max-width: 840px;
  padding-block: 4rem 6rem;
}

.document {
  padding: clamp(1.5rem, 6vw, 4rem);
}

.document h1 {
  max-width: none;
  font-size: clamp(2.8rem, 8vw, 5.2rem);
}

.document h2 {
  margin-top: 2.5rem;
}

.document p,
.document li {
  font-size: 1.03rem;
}

.document .lede {
  margin-bottom: 3rem;
  color: var(--text);
  font-size: 1.2rem;
}

.document ul {
  padding-left: 1.4rem;
}

.document li + li {
  margin-top: 0.5rem;
}

.contact-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
  margin-top: 3rem;
  padding: 1.5rem;
  border-left: 4px solid var(--orange);
}

.contact-card h2 {
  margin-top: 0;
}

.contact-card p {
  margin-bottom: 0;
}

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 7rem;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

footer p {
  margin: 0;
}

@media (max-width: 760px) {
  .site-header {
    min-height: 4.6rem;
  }

  .brand {
    font-size: 0.9rem;
  }

  .brand-mark {
    width: 1.9rem;
    height: 1.9rem;
  }

  nav {
    gap: 1rem;
    font-size: 0.9rem;
  }

  .hero {
    min-height: auto;
    padding-block: 5rem;
  }

  .feature-grid,
  .plain-panel,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .plain-panel {
    gap: 1rem;
    margin-bottom: 4rem;
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 0.7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}