:root {
  color-scheme: dark;
  --bg: #050912;
  --bg-deep: #07131e;
  --surface: rgba(8, 15, 26, 0.82);
  --surface-strong: rgba(10, 18, 31, 0.94);
  --text: #eef5ff;
  --text-soft: rgba(230, 241, 255, 0.78);
  --text-muted: rgba(185, 203, 228, 0.62);
  --cyan: #5fe7ff;
  --cyan-soft: rgba(95, 231, 255, 0.22);
  --violet: #8e7bff;
  --violet-soft: rgba(142, 123, 255, 0.22);
  --border: rgba(130, 164, 214, 0.24);
  --border-strong: rgba(130, 164, 214, 0.42);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
  --content-width: 1180px;
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --grid-gap: clamp(1rem, 2vw, 1.5rem);
  --pointer-x: 50%;
  --pointer-y: 16%;
  --body-pad: clamp(1rem, 2.2vw, 2rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 18% 18%, rgba(95, 231, 255, 0.14), transparent 30%),
    radial-gradient(circle at 80% 12%, rgba(142, 123, 255, 0.12), transparent 34%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  color: var(--text);
  font-family: Inter, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -2;
}

body::before {
  background:
    radial-gradient(circle at 22% 16%, rgba(95, 231, 255, 0.16), transparent 28%),
    radial-gradient(circle at 78% 18%, rgba(142, 123, 255, 0.14), transparent 32%),
    radial-gradient(circle at 50% 86%, rgba(95, 231, 255, 0.08), transparent 38%);
  opacity: 0.95;
  filter: blur(2px);
}

body::after {
  z-index: -1;
  background:
    repeating-linear-gradient(
      90deg,
      rgba(149, 190, 255, 0.05) 0,
      rgba(149, 190, 255, 0.05) 1px,
      transparent 1px,
      transparent 84px
    ),
    repeating-linear-gradient(
      0deg,
      rgba(149, 190, 255, 0.045) 0,
      rgba(149, 190, 255, 0.045) 1px,
      transparent 1px,
      transparent 84px
    ),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0) 12%, rgba(255, 255, 255, 0.015) 88%, rgba(255, 255, 255, 0.025));
  opacity: 0.5;
}

body[data-reduced-motion="true"] {
  --pointer-x: 50%;
  --pointer-y: 16%;
}

body[data-reduced-motion="true"]::before {
  filter: none;
  opacity: 0.65;
}

body[data-reduced-motion="true"]::after {
  opacity: 0.35;
}

body[data-reduced-motion="true"] *,
body[data-reduced-motion="true"] *::before,
body[data-reduced-motion="true"] *::after {
  animation: none !important;
  transition-duration: 0.01ms !important;
  transition-delay: 0ms !important;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
    scroll-behavior: auto !important;
  }
}

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

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

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

button,
a.button {
  font: inherit;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 20;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: rgba(8, 15, 26, 0.94);
  border: 1px solid var(--border-strong);
  color: var(--text);
  transform: translateY(-180%);
  transition: transform 180ms ease, box-shadow 180ms ease;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

body > * {
  position: relative;
  z-index: 1;
}

#site-header,
#hero,
#capabilities,
#site-footer {
  width: min(var(--content-width), calc(100% - (var(--body-pad) * 2)));
  margin-inline: auto;
}

#site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: clamp(1.1rem, 2vw, 1.6rem) 0;
  margin-top: clamp(0.5rem, 1.2vw, 1rem);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.95rem 1.15rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(12, 19, 33, 0.96), rgba(7, 13, 24, 0.88));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 0 0 1px rgba(95, 231, 255, 0.04);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.7rem;
  height: 2.7rem;
  border-radius: 50%;
  border: 1px solid rgba(95, 231, 255, 0.5);
  color: var(--cyan);
  background: radial-gradient(circle at 35% 35%, rgba(95, 231, 255, 0.18), rgba(95, 231, 255, 0.05));
  box-shadow: 0 0 0 1px rgba(95, 231, 255, 0.08), 0 0 24px rgba(95, 231, 255, 0.18);
  font-size: 1.05rem;
  flex: none;
}

.brand-name,
.brand-tag,
.eyebrow,
#capabilities h2,
.capability-card h3,
.capability-card p,
#site-footer p {
  margin: 0;
}

.brand-name {
  font-size: 0.96rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text);
}

.brand-tag {
  font-size: 0.85rem;
  color: var(--text-muted);
}

nav {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

nav a {
  position: relative;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  color: var(--text-soft);
  border: 1px solid transparent;
  transition: border-color 180ms ease, color 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}

nav a::after {
  content: "";
  position: absolute;
  inset: auto 1rem 0.55rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(95, 231, 255, 0.72), transparent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

nav a:hover,
nav a:focus-visible {
  color: var(--text);
  border-color: rgba(95, 231, 255, 0.24);
  background: rgba(9, 18, 31, 0.72);
  box-shadow: 0 0 0 1px rgba(95, 231, 255, 0.08), 0 0 22px rgba(95, 231, 255, 0.1);
}

nav a:hover::after,
nav a:focus-visible::after {
  transform: scaleX(1);
}

nav a:focus-visible,
.button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

main {
  position: relative;
  padding: clamp(1rem, 2vw, 1.5rem) 0 clamp(2.75rem, 5vw, 4.5rem);
}

main::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  opacity: 0.85;
  background:
    radial-gradient(circle at var(--pointer-x) var(--pointer-y), rgba(95, 231, 255, 0.12), transparent 22%),
    radial-gradient(circle at 50% 0%, rgba(142, 123, 255, 0.08), transparent 38%);
  transition: opacity 240ms ease;
}

#hero {
  display: grid;
  align-items: start;
  gap: 1.25rem;
  padding: clamp(3rem, 7vw, 5.75rem) 0 clamp(2.25rem, 4vw, 3.5rem);
}

.eyebrow {
  width: fit-content;
  padding: 0.42rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(95, 231, 255, 0.22);
  background: rgba(10, 18, 31, 0.64);
  color: var(--cyan);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 0.77rem;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
}

#hero h1 {
  margin: 0;
  max-width: 11ch;
  font-size: clamp(3rem, 7vw, 5.5rem);
  line-height: 0.94;
  letter-spacing: -0.05em;
  text-wrap: balance;
  text-shadow: 0 0 24px rgba(95, 231, 255, 0.08), 0 0 42px rgba(142, 123, 255, 0.08);
}

.hero-copy {
  max-width: 62ch;
  color: var(--text-soft);
  font-size: clamp(1.02rem, 1.55vw, 1.18rem);
  margin: 0;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 0.6rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 3.2rem;
  padding: 0.86rem 1.3rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background-position 220ms ease, color 180ms ease;
  will-change: transform;
}

.button:hover {
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(1px);
}

.button-primary {
  color: #f8fbff;
  background: linear-gradient(135deg, rgba(95, 231, 255, 0.95) 0%, rgba(110, 147, 255, 0.96) 42%, rgba(142, 123, 255, 0.98) 100%);
  box-shadow:
    0 18px 38px rgba(29, 57, 99, 0.38),
    0 0 0 1px rgba(255, 255, 255, 0.08) inset,
    0 0 42px rgba(95, 231, 255, 0.12);
}

.button-primary:hover {
  color: #ffffff;
  box-shadow:
    0 22px 44px rgba(29, 57, 99, 0.42),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset,
    0 0 56px rgba(95, 231, 255, 0.18);
}

.button-primary:active {
  box-shadow:
    0 12px 24px rgba(29, 57, 99, 0.28),
    0 0 0 1px rgba(255, 255, 255, 0.08) inset;
}

.button-secondary {
  color: var(--text);
  border-color: rgba(95, 231, 255, 0.2);
  background: rgba(9, 18, 31, 0.66);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
}

.button-secondary:hover {
  border-color: rgba(95, 231, 255, 0.34);
  background: rgba(12, 21, 36, 0.84);
}

#capabilities {
  padding: clamp(1.5rem, 2.6vw, 2rem) 0 0;
}

#capabilities h2 {
  margin-bottom: 1rem;
  font-size: clamp(1.4rem, 2vw, 1.8rem);
  letter-spacing: -0.03em;
}

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

.capability-card {
  position: relative;
  padding: 1.35rem 1.4rem 1.45rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(11, 18, 31, 0.88), rgba(7, 13, 24, 0.94)),
    radial-gradient(circle at 18% 12%, rgba(95, 231, 255, 0.08), transparent 38%);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.035);
  overflow: hidden;
}

.capability-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background:
    linear-gradient(135deg, rgba(95, 231, 255, 0.12), transparent 30%),
    linear-gradient(315deg, rgba(142, 123, 255, 0.11), transparent 28%);
  opacity: 0.75;
}

.capability-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 14%);
  opacity: 0.4;
}

.capability-card h3 {
  position: relative;
  font-size: 1.08rem;
  margin-bottom: 0.7rem;
}

.capability-card p {
  position: relative;
  color: var(--text-soft);
}

#site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: clamp(2rem, 4vw, 3rem) 0 2.25rem;
  color: var(--text-muted);
  font-size: 0.94rem;
}

:focus-visible {
  scroll-margin-block: 5rem;
}

@media (max-width: 760px) {
  :root {
    --body-pad: 1rem;
  }

  body::before {
    opacity: 0.65;
    filter: blur(4px);
  }

  body::after {
    opacity: 0.3;
  }

  #site-header,
  #site-footer {
    flex-direction: column;
    align-items: stretch;
  }

  #site-header {
    gap: 1rem;
  }

  .brand {
    width: 100%;
    justify-content: flex-start;
    border-radius: 24px;
  }

  nav {
    justify-content: flex-start;
  }

  nav a {
    flex: 1 1 auto;
    text-align: center;
  }

  #hero {
    padding-top: clamp(2rem, 5vw, 3rem);
    gap: 1rem;
  }

  #hero h1 {
    max-width: 12ch;
    font-size: clamp(2.6rem, 15vw, 4rem);
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
    min-height: 44px;
  }

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

  .capability-card {
    border-radius: 24px;
  }

  .capability-card::before,
  .capability-card::after {
    opacity: 0.6;
  }

  #site-footer {
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  main::before {
    opacity: 0.3;
  }

  .button,
  nav a,
  .skip-link {
    transition: none;
  }
}