:root {
  color-scheme: light dark;
  --navy-950: #09111f;
  --navy-900: #111b2e;
  --navy-800: #182943;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --white: #ffffff;
  --orange: #f48120;
  --orange-dark: #b94700;
  --orange-pale: #fff1e6;
  --page: #f7f9fc;
  --surface: rgba(255, 255, 255, 0.82);
  --text: var(--navy-900);
  --muted: var(--slate-600);
  --border: rgba(15, 31, 52, 0.13);
  --shadow: 0 24px 70px rgba(17, 27, 46, 0.12);
  --max-width: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 92% 2%, rgba(244, 129, 32, 0.13), transparent 28rem),
    radial-gradient(circle at 2% 35%, rgba(24, 41, 67, 0.09), transparent 24rem),
    var(--page);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.65rem 0.9rem;
  border-radius: 0.5rem;
  background: var(--white);
  color: var(--navy-950);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.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;
  gap: 2rem;
  padding-block: 1.35rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--navy-900);
  font-size: 0.98rem;
  font-weight: 750;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  place-items: center;
  border-radius: 0.6rem;
  background: var(--navy-900);
  color: var(--white);
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  box-shadow: inset 0 -3px 0 var(--orange);
}

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

nav a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
}

nav a:hover,
nav a:focus-visible {
  color: var(--orange-dark);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(240px, 0.65fr);
  align-items: center;
  gap: clamp(2.5rem, 8vw, 7rem);
  min-height: 39rem;
  padding-block: clamp(4rem, 10vw, 8rem);
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--orange-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 14ch;
  margin-bottom: 1.5rem;
  font-size: clamp(3rem, 7.5vw, 6.25rem);
}

h2 {
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 3.5rem);
}

h3 {
  margin-bottom: 0.8rem;
  font-size: 1.25rem;
}

.lede {
  max-width: 64ch;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.75rem 1.15rem;
  border: 1px solid transparent;
  border-radius: 0.65rem;
  font-size: 0.94rem;
  font-weight: 750;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--navy-900);
  color: var(--white);
  box-shadow: 0 10px 25px rgba(17, 27, 46, 0.17);
}

.button-primary:hover,
.button-primary:focus-visible {
  box-shadow: 0 14px 30px rgba(17, 27, 46, 0.24);
}

.button-secondary {
  border-color: var(--border);
  background: var(--surface);
  color: var(--navy-900);
}

.signal-card {
  position: relative;
  overflow: hidden;
  padding: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 1.25rem;
  background: linear-gradient(145deg, var(--navy-800), var(--navy-950));
  color: var(--slate-200);
  box-shadow: var(--shadow);
}

.signal-card::after {
  position: absolute;
  right: -3rem;
  bottom: -3rem;
  width: 10rem;
  height: 10rem;
  border: 2.5rem solid rgba(244, 129, 32, 0.13);
  border-radius: 50%;
  content: "";
}

.signal-monogram {
  display: grid;
  width: 4.25rem;
  height: 4.25rem;
  margin-bottom: 2.5rem;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.signal-card p {
  margin: 0.5rem 0;
  font-weight: 650;
}

.section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 8vw, 7rem);
  padding-block: clamp(4rem, 9vw, 7rem);
  border-top: 1px solid var(--border);
}

.about-copy {
  color: var(--muted);
  font-size: 1.08rem;
}

.about-copy p:first-child {
  margin-top: 0;
}

.focus-section {
  display: block;
}

.focus-section .section-heading {
  max-width: 50rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 3rem;
}

.focus-card {
  min-height: 18rem;
  padding: 1.6rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--surface);
  box-shadow: 0 15px 40px rgba(17, 27, 46, 0.06);
}

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

.card-number {
  display: block;
  margin-bottom: 3.5rem;
  color: var(--orange-dark);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.1em;
}

.principles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  overflow: hidden;
  margin-block: 1rem clamp(4rem, 9vw, 7rem);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.13);
  box-shadow: var(--shadow);
}

.principles p {
  display: grid;
  min-height: 8rem;
  margin: 0;
  padding: 1.3rem;
  place-items: center;
  background: var(--navy-900);
  color: var(--white);
  font-size: 0.93rem;
  font-weight: 700;
  text-align: center;
}

.contact-section {
  align-items: end;
}

.contact-section > div > p:last-child {
  max-width: 52ch;
  color: var(--muted);
}

.contact-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem 0;
  border-bottom: 3px solid var(--orange);
  color: var(--navy-900);
  font-size: clamp(1.15rem, 3vw, 1.65rem);
  font-weight: 750;
  text-decoration: none;
}

.contact-link:hover,
.contact-link:focus-visible {
  color: var(--orange-dark);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 2rem 3rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.82rem;
}

footer p {
  margin: 0;
}

:focus-visible {
  outline: 3px solid rgba(244, 129, 32, 0.45);
  outline-offset: 4px;
}

@media (max-width: 800px) {
  .hero,
  .section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .signal-card {
    max-width: 28rem;
  }

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

  .focus-card {
    min-height: auto;
  }

  .card-number {
    margin-bottom: 2rem;
  }

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

@media (max-width: 560px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    width: 100%;
    justify-content: space-between;
  }

  h1 {
    font-size: clamp(2.65rem, 14vw, 4rem);
  }

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

  footer {
    flex-direction: column;
    gap: 0.4rem;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #08101d;
    --surface: rgba(17, 27, 46, 0.78);
    --text: #f5f7fb;
    --muted: #b9c4d3;
    --border: rgba(226, 232, 240, 0.14);
    --orange-dark: #ff9d4d;
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
  }

  body {
    background:
      radial-gradient(circle at 92% 2%, rgba(244, 129, 32, 0.14), transparent 28rem),
      radial-gradient(circle at 2% 35%, rgba(65, 87, 121, 0.18), transparent 24rem),
      var(--page);
  }

  .brand,
  .button-secondary,
  .contact-link {
    color: var(--text);
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}