:root {
  color-scheme: dark;
  --bg: #07090f;
  --bg-2: #0e1518;
  --text: #f6f8fb;
  --muted: #a8b1bd;
  --line: rgba(255, 255, 255, 0.14);
  --panel: rgba(14, 20, 28, 0.7);
  --cyan: #4be4ff;
  --lime: #b9f45d;
  --coral: #ff8165;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
}

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

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 4vw, 64px);
  background: linear-gradient(180deg, rgba(5, 7, 12, 0.76), rgba(5, 7, 12, 0));
}

.brand,
.nav-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.76rem;
  color: var(--cyan);
  box-shadow: 0 0 30px rgba(75, 228, 255, 0.18);
}

.nav-links {
  gap: clamp(14px, 3vw, 34px);
  color: rgba(246, 248, 251, 0.78);
  font-size: 0.92rem;
}

.nav-links a {
  transition: color 160ms ease;
}

.nav-links a:hover {
  color: var(--text);
}

.hero {
  position: relative;
  min-height: 92svh;
  overflow: hidden;
  display: grid;
  align-items: end;
  padding: 130px clamp(20px, 5vw, 76px) 88px;
  isolation: isolate;
}

.hero-media,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-media {
  object-fit: cover;
  z-index: -3;
}

.hero-shade {
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(3, 5, 10, 0.9) 0%, rgba(3, 5, 10, 0.62) 38%, rgba(3, 5, 10, 0.14) 76%),
    linear-gradient(180deg, rgba(3, 5, 10, 0.22) 0%, rgba(3, 5, 10, 0.88) 100%);
}

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

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--lime);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(4rem, 15vw, 11rem);
  line-height: 0.86;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 620px;
  margin-bottom: 28px;
  color: rgba(246, 248, 251, 0.86);
  font-size: clamp(1.12rem, 2vw, 1.44rem);
  line-height: 1.72;
}

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

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  padding: 0 20px;
  border-radius: 6px;
  font-weight: 800;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

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

.button.primary {
  border-color: rgba(75, 228, 255, 0.66);
  background: var(--cyan);
  color: #071016;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.08);
}

.signal-strip {
  position: absolute;
  left: clamp(20px, 5vw, 76px);
  right: clamp(20px, 5vw, 76px);
  bottom: 22px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
}

.signal-strip span {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  background: rgba(6, 9, 14, 0.72);
  color: rgba(246, 248, 251, 0.78);
  font-size: 0.83rem;
  font-weight: 700;
  text-align: center;
}

.section {
  padding: clamp(72px, 9vw, 128px) clamp(20px, 5vw, 76px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.7fr);
  gap: clamp(28px, 7vw, 96px);
  align-items: end;
  background: var(--bg);
}

.intro h2,
.section-heading h2,
.contact-section h2 {
  margin-bottom: 0;
  font-size: clamp(2.3rem, 5.6vw, 5.2rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.intro p,
.section-heading p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.9;
}

.capability-band {
  background:
    linear-gradient(135deg, rgba(75, 228, 255, 0.1), transparent 30%),
    linear-gradient(315deg, rgba(255, 129, 101, 0.13), transparent 34%),
    var(--bg-2);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.45fr);
  gap: 28px;
  align-items: end;
  margin-bottom: 36px;
}

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

.capability-card {
  min-height: 280px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  background: var(--panel);
  backdrop-filter: blur(20px);
}

.card-index {
  color: var(--coral);
  font-weight: 900;
}

.capability-card h3 {
  margin: 76px 0 14px;
  font-size: clamp(1.35rem, 2vw, 1.75rem);
}

.capability-card p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.82;
}

.contact-section {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  background: #f5f6f2;
  color: #101418;
}

.contact-section .section-kicker {
  color: #087e8b;
}

.contact-link {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  border-bottom: 2px solid #101418;
  color: #101418;
  font-size: clamp(1.15rem, 2.5vw, 2rem);
  font-weight: 900;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 5vw, 76px);
  background: #101418;
  color: rgba(246, 248, 251, 0.72);
  font-size: 0.9rem;
}

@media (max-width: 860px) {
  .site-header {
    position: absolute;
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: 94svh;
    padding-top: 104px;
    padding-bottom: 154px;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(3, 5, 10, 0.88), rgba(3, 5, 10, 0.44)),
      linear-gradient(180deg, rgba(3, 5, 10, 0.16), rgba(3, 5, 10, 0.9));
  }

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

  .intro,
  .section-heading,
  .capability-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 520px) {
  .hero {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .signal-strip {
    left: 18px;
    right: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}