:root {
  color-scheme: dark;
  --bg: #071015;
  --bg-elevated: #0c171e;
  --ink: #f4f8fb;
  --muted: #a8b5bd;
  --line: rgba(255, 255, 255, 0.14);
  --line-strong: rgba(255, 255, 255, 0.28);
  --cyan: #69d7f5;
  --blue: #1f72ff;
  --amber: #f2b85b;
  --green: #7ad7a4;
  --shadow: rgba(0, 0, 0, 0.45);
  --max: 1160px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  letter-spacing: 0;
}

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

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 48px);
  background: rgba(7, 16, 21, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
}

.brand,
.site-nav,
.hero-actions,
.contact-actions,
.hero-status,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 760;
  font-size: 16px;
}

.brand-mark {
  position: relative;
  width: 28px;
  height: 28px;
  border: 7px solid #eaf7ff;
  border-right-color: transparent;
  border-radius: 50%;
  box-shadow: 0 0 22px rgba(105, 215, 245, 0.26);
}

.brand-mark::after {
  position: absolute;
  content: "";
  width: 9px;
  height: 9px;
  right: -8px;
  top: 50%;
  background: var(--cyan);
  transform: translateY(-50%) rotate(45deg);
}

.site-nav {
  gap: 6px;
}

.site-nav a {
  padding: 9px 12px;
  color: rgba(244, 248, 251, 0.76);
  font-size: 14px;
  border-radius: 8px;
}

.site-nav a:hover {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.08);
}

.hero {
  position: relative;
  min-height: 88svh;
  overflow: hidden;
  isolation: isolate;
  display: grid;
  align-items: center;
  padding: 116px clamp(22px, 6vw, 72px) 48px;
  border-bottom: 1px solid var(--line);
}

.hero-image {
  position: absolute;
  inset: 0;
  z-index: -3;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-scrim {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(7, 16, 21, 0.92) 0%, rgba(7, 16, 21, 0.72) 42%, rgba(7, 16, 21, 0.22) 100%),
    linear-gradient(180deg, rgba(7, 16, 21, 0.2), rgba(7, 16, 21, 0.78));
}

.hero-content {
  width: min(720px, 100%);
  padding-top: 28px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 760;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

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

h1 {
  margin-bottom: 16px;
  font-size: clamp(58px, 11vw, 132px);
  line-height: 0.9;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 650px;
  margin-bottom: 30px;
  color: rgba(244, 248, 251, 0.86);
  font-size: clamp(20px, 3vw, 34px);
  line-height: 1.16;
  font-weight: 620;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 720;
  border: 1px solid transparent;
}

.button.primary {
  color: #041015;
  background: #eaf7ff;
  box-shadow: 0 18px 42px rgba(105, 215, 245, 0.23);
}

.button.primary:hover {
  background: #ffffff;
}

.button.secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
}

.button.secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

.hero-status {
  position: absolute;
  left: clamp(22px, 6vw, 72px);
  right: clamp(22px, 6vw, 72px);
  bottom: 24px;
  gap: 10px;
  flex-wrap: wrap;
}

.hero-status span {
  padding: 8px 10px;
  color: rgba(244, 248, 251, 0.74);
  font-size: 12px;
  font-weight: 680;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(7, 16, 21, 0.48);
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(56px, 9vw, 104px) clamp(20px, 4vw, 32px);
}

.section-heading {
  max-width: 680px;
}

.section-heading h2,
.brand-system h2,
.contact h2 {
  margin-bottom: 0;
  font-size: clamp(32px, 5vw, 58px);
  line-height: 1;
  letter-spacing: 0;
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1fr);
  gap: clamp(28px, 7vw, 86px);
  align-items: start;
}

.intro-copy p,
.brand-system p,
.contact-copy p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.62;
}

.intro-copy p:last-child,
.brand-system p:last-child,
.contact-copy p:last-child {
  margin-bottom: 0;
}

.systems {
  border-top: 1px solid var(--line);
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 36px;
}

.system-card,
.principle {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.045);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.18);
}

.system-card {
  min-height: 244px;
  padding: 22px;
}

.system-card.featured {
  grid-column: span 2;
  background:
    linear-gradient(135deg, rgba(31, 114, 255, 0.2), rgba(122, 215, 164, 0.08)),
    rgba(255, 255, 255, 0.06);
  border-color: rgba(105, 215, 245, 0.38);
}

.system-kicker {
  margin-bottom: 34px;
  color: var(--amber);
  font-size: 12px;
  font-weight: 760;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.system-card h3,
.principle h3 {
  margin-bottom: 12px;
  font-size: 26px;
  line-height: 1.05;
}

.system-card p,
.principle p {
  color: var(--muted);
  line-height: 1.55;
}

.system-card a {
  display: inline-block;
  margin-top: 8px;
  color: var(--cyan);
  font-size: 14px;
  font-weight: 720;
}

.principles {
  border-top: 1px solid var(--line);
}

.principle-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 36px;
}

.principle {
  padding: 22px;
}

.principle-index {
  display: inline-block;
  margin-bottom: 44px;
  color: var(--green);
  font-size: 13px;
  font-weight: 780;
}

.brand-system {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(360px, 1fr);
  gap: clamp(24px, 5vw, 62px);
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(56px, 9vw, 104px) clamp(20px, 4vw, 32px);
  border-top: 1px solid var(--line);
}

.brand-system picture {
  display: block;
}

.brand-system img {
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: #f7f9fb;
  box-shadow: 0 22px 64px var(--shadow);
}

.contact {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.contact-copy {
  max-width: 690px;
}

.site-footer {
  justify-content: space-between;
  gap: 16px;
  padding: 24px clamp(20px, 4vw, 48px);
  color: rgba(244, 248, 251, 0.62);
  font-size: 13px;
}

@media (max-width: 900px) {
  .site-header {
    position: absolute;
  }

  .site-nav {
    display: none;
  }

  .hero {
    min-height: 86svh;
    padding-top: 106px;
  }

  .hero-scrim {
    background:
      linear-gradient(90deg, rgba(7, 16, 21, 0.92), rgba(7, 16, 21, 0.58)),
      linear-gradient(180deg, rgba(7, 16, 21, 0.12), rgba(7, 16, 21, 0.82));
  }

  .intro,
  .brand-system,
  .contact {
    grid-template-columns: 1fr;
  }

  .system-grid,
  .principle-list {
    grid-template-columns: 1fr;
  }

  .system-card.featured {
    grid-column: span 1;
  }

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

@media (max-width: 520px) {
  .hero-copy {
    font-size: 22px;
  }

  .button {
    width: 100%;
  }

  .hero-actions,
  .contact-actions {
    width: 100%;
  }

  .hero-status {
    display: none;
  }

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