:root {
  --color-bg: #f7f4ef;
  --color-surface: rgba(255, 255, 255, 0.72);
  --color-surface-strong: rgba(15, 23, 31, 0.06);
  --color-border: rgba(15, 23, 31, 0.12);
  --color-border-strong: rgba(15, 23, 31, 0.18);
  --color-text: #17181c;
  --color-text-muted: rgba(23, 24, 28, 0.68);
  --color-accent: #5ba4a4;
  --color-accent-soft: rgba(91, 164, 164, 0.18);
  --color-accent-glow: rgba(91, 164, 164, 0.36);
  --shadow-soft: 0 30px 80px rgba(20, 24, 29, 0.12);
  --color-track: rgba(15, 23, 31, 0.06);
  --background-finish:
    radial-gradient(circle at top left, rgba(91, 164, 164, 0.14), transparent 26rem),
    radial-gradient(circle at 85% 20%, rgba(255, 255, 255, 0.58), transparent 18rem),
    linear-gradient(180deg, #f8f5f0 0%, #f1ece6 55%, #eae3da 100%);
  --grid-color: rgba(15, 23, 31, 0.05);
  --glow-right: radial-gradient(circle, rgba(255, 255, 255, 0.78) 0%, transparent 58%);
  --panel-fill:
    linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.64)),
    radial-gradient(circle at 50% 40%, rgba(91, 164, 164, 0.12), transparent 38%),
    rgba(255, 255, 255, 0.28);
  --ring-stroke: rgba(15, 23, 31, 0.12);
  --ring-stroke-accent: rgba(91, 164, 164, 0.18);
  --core-fill:
    radial-gradient(circle at 35% 30%, #f8ffff 0%, #aad7d7 28%, #5ba4a4 54%, #173636 100%);
  --signal-fill: rgba(255, 255, 255, 0.72);
  --signal-shadow: 0 18px 40px rgba(20, 24, 29, 0.1);
  --footer-border: rgba(15, 23, 31, 0.08);
  --radius-xl: 32px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --transition-standard: 220ms ease;
  --container-width: min(1120px, calc(100vw - 48px));
}

[data-theme="dark"] {
  --color-bg: #09090b;
  --color-surface: rgba(24, 24, 27, 0.72);
  --color-surface-strong: rgba(255, 255, 255, 0.06);
  --color-border: rgba(255, 255, 255, 0.14);
  --color-border-strong: rgba(255, 255, 255, 0.22);
  --color-text: #faf7f2;
  --color-text-muted: rgba(250, 247, 242, 0.72);
  --shadow-soft: 0 30px 80px rgba(0, 0, 0, 0.35);
  --color-track: rgba(255, 255, 255, 0.06);
  --background-finish:
    radial-gradient(circle at top left, rgba(91, 164, 164, 0.12), transparent 26rem),
    radial-gradient(circle at 85% 20%, rgba(255, 255, 255, 0.07), transparent 18rem),
    linear-gradient(180deg, #111114 0%, #09090b 55%, #060608 100%);
  --grid-color: rgba(255, 255, 255, 0.035);
  --glow-right: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 58%);
  --panel-fill:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02)),
    radial-gradient(circle at 50% 40%, rgba(91, 164, 164, 0.14), transparent 38%),
    rgba(255, 255, 255, 0.02);
  --ring-stroke: rgba(255, 255, 255, 0.14);
  --ring-stroke-accent: rgba(91, 164, 164, 0.18);
  --core-fill:
    radial-gradient(circle at 35% 30%, #efffff 0%, #9bd0d0 28%, #5ba4a4 54%, #102323 100%);
  --signal-fill: rgba(10, 10, 12, 0.62);
  --signal-shadow: 0 18px 40px rgba(0, 0, 0, 0.22);
  --footer-border: rgba(255, 255, 255, 0.08);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Outfit", sans-serif;
  color: var(--color-text);
  background: var(--background-finish);
  overflow-x: hidden;
  transition:
    background 260ms ease,
    color 260ms ease;
}

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

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.skip-link,
.sr-only {
  position: absolute;
}

.skip-link {
  left: 1rem;
  top: -3rem;
  z-index: 1000;
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  background: #ffffff;
  color: #111114;
  transition: top var(--transition-standard);
}

.skip-link:focus {
  top: 1rem;
}

.sr-only {
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.page-shell {
  position: relative;
  min-height: 100vh;
  width: var(--container-width);
  margin: 0 auto;
  padding: 28px 0 24px;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.background-grid,
.background-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.background-grid {
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at center, black 45%, transparent 90%);
  opacity: 0.32;
}

.background-glow {
  filter: blur(110px);
  opacity: 0.55;
  transform: translate3d(0, 0, 0);
}

.background-glow-left {
  background: radial-gradient(circle, rgba(91, 164, 164, 0.28) 0%, transparent 62%);
  inset: 6% auto auto -14%;
  width: 32rem;
  height: 32rem;
}

.background-glow-right {
  background: var(--glow-right);
  inset: auto -10% 0 auto;
  width: 28rem;
  height: 28rem;
}

.site-header,
.site-footer {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
}

.site-header {
  padding: 0.25rem 0 2rem;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-mark {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 35%, #e9fbfb 0%, #5ba4a4 45%, #183a3a 100%);
  box-shadow:
    0 0 24px rgba(91, 164, 164, 0.45),
    0 0 0 10px rgba(91, 164, 164, 0.06);
}

.brand-name,
.header-note,
.site-footer {
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.header-note,
.site-footer {
  color: var(--color-text-muted);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.12rem;
  min-width: 46px;
  min-height: 46px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.24rem;
  background: var(--color-surface);
  backdrop-filter: blur(14px);
  color: var(--color-text-muted);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.04);
  transition:
    transform var(--transition-standard),
    border-color var(--transition-standard),
    background var(--transition-standard),
    color var(--transition-standard),
    opacity var(--transition-standard);
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  transform: translateY(-1px);
  border-color: var(--color-border-strong);
  color: var(--color-text);
  outline: none;
}

.theme-toggle-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  opacity: 0.42;
  transform: scale(0.92);
  transition:
    opacity var(--transition-standard),
    color var(--transition-standard),
    transform var(--transition-standard);
}

.theme-toggle-icon svg {
  width: 100%;
  height: 100%;
}

[data-theme="light"] .theme-toggle-icon-sun,
[data-theme="dark"] .theme-toggle-icon-moon {
  color: var(--color-text);
  opacity: 0.95;
  transform: scale(1);
}

.hero {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
  min-height: calc(100vh - 132px);
  padding: 2rem 0;
}

.hero-copy {
  max-width: 37rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0 0 1.5rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.035);
  backdrop-filter: blur(20px);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.76rem;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 6px rgba(91, 164, 164, 0.12);
}

h1 {
  margin: 0;
  font-family: "Instrument Serif", serif;
  font-size: clamp(4rem, 13vw, 7.2rem);
  line-height: 0.92;
  font-weight: 400;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.hero-text {
  margin: 1.4rem 0 2rem;
  max-width: 28rem;
  color: var(--color-text-muted);
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.65;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.meta-row span {
  padding: 0.72rem 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.035);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.hero-art {
  display: flex;
  justify-content: center;
}

.orbital-frame {
  position: relative;
  width: min(100%, 30rem);
  aspect-ratio: 1 / 1.08;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background: var(--panel-fill);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  backdrop-filter: blur(14px);
}

.orbital-frame::before,
.orbital-frame::after {
  content: "";
  position: absolute;
  inset: 1.25rem;
  border-radius: 50%;
  border: 1px solid var(--ring-stroke);
}

.orbital-frame::after {
  inset: 3rem;
  border-style: dashed;
}

.orbital-core {
  position: absolute;
  inset: 50%;
  width: 8.5rem;
  height: 8.5rem;
  margin: -4.25rem 0 0 -4.25rem;
  border-radius: 50%;
  background: var(--core-fill);
  box-shadow:
    0 0 60px rgba(91, 164, 164, 0.36),
    inset 0 0 30px rgba(255, 255, 255, 0.22);
}

.orbital-ring {
  position: absolute;
  inset: 50%;
  border-radius: 50%;
  border: 1px solid var(--ring-stroke);
  transform-origin: center;
}

.orbital-ring-one {
  width: 15rem;
  height: 15rem;
  margin: -7.5rem 0 0 -7.5rem;
}

.orbital-ring-two {
  width: 21rem;
  height: 21rem;
  margin: -10.5rem 0 0 -10.5rem;
  border-color: var(--ring-stroke-accent);
}

.orbital-ring-three {
  width: 27rem;
  height: 27rem;
  margin: -13.5rem 0 0 -13.5rem;
}

.signal-card {
  position: absolute;
  min-width: 9rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--color-border-strong);
  border-radius: 18px;
  background: var(--signal-fill);
  backdrop-filter: blur(18px);
  box-shadow: var(--signal-shadow);
}

.signal-card-top {
  top: 12%;
  right: 9%;
}

.signal-card-bottom {
  bottom: 11%;
  left: 8%;
}

.signal-label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

.signal-card strong {
  font-size: 1.05rem;
  font-weight: 600;
}

.site-footer {
  padding-top: 2rem;
  border-top: 1px solid var(--footer-border);
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    align-items: start;
    min-height: auto;
    padding: 1rem 0 2.5rem;
  }

  .hero-copy {
    max-width: none;
  }

  .hero-art {
    order: -1;
    padding-top: 0.5rem;
  }

  .orbital-frame {
    width: min(100%, 34rem);
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100vw - 24px, 100%);
    padding-top: 18px;
  }

  .site-header {
    padding-bottom: 1.25rem;
  }

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

  .header-actions {
    width: 100%;
    justify-content: space-between;
  }

  .orbital-frame {
    aspect-ratio: 1 / 1;
    border-radius: 24px;
  }

  .orbital-ring-one {
    width: 11.5rem;
    height: 11.5rem;
    margin: -5.75rem 0 0 -5.75rem;
  }

  .orbital-ring-two {
    width: 16rem;
    height: 16rem;
    margin: -8rem 0 0 -8rem;
  }

  .orbital-ring-three {
    width: 21rem;
    height: 21rem;
    margin: -10.5rem 0 0 -10.5rem;
  }

  .signal-card {
    min-width: 7.75rem;
    padding: 0.85rem 0.95rem;
  }

  .signal-card-top {
    top: 8%;
    right: 5%;
  }

  .signal-card-bottom {
    bottom: 8%;
    left: 5%;
  }
}

@media (max-width: 420px) {
  .hero {
    gap: 1.5rem;
  }

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

  .theme-toggle {
    align-self: flex-start;
  }

  h1 {
    font-size: clamp(3.35rem, 18vw, 4.6rem);
  }

  .hero-text {
    max-width: 19rem;
    margin-bottom: 1.4rem;
  }

  .meta-row span {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .orbital-core {
    width: 6.75rem;
    height: 6.75rem;
    margin: -3.375rem 0 0 -3.375rem;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0ms !important;
  }
}