:root {
  --bg-1: #030b1f;
  --bg-2: #0b1d42;
  --bg-3: #142f63;
  --text: #eaf1ff;
  --muted: #bfd0ff;
  --card: rgba(16, 33, 70, 0.62);
  --border: rgba(186, 209, 255, 0.24);
  --glow: rgba(128, 179, 255, 0.28);
  --accent: #9dc8ff;
  --accent-2: #d5e6ff;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Noto Sans SC", system-ui, -apple-system, sans-serif;
  color: var(--text);
  min-height: 100%;
  background: radial-gradient(circle at 20% 10%, #274f9a 0%, transparent 30%),
    radial-gradient(circle at 80% 20%, #1e3f82 0%, transparent 30%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2) 55%, var(--bg-3));
  overflow-x: hidden;
}

body {
  position: relative;
}

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

body::before {
  z-index: 0;
  opacity: 0.68;
  background-size: 240px 240px;
  background-image:
    radial-gradient(3.4px 3.4px at 12% 18%, #ffffff, transparent 58%),
    radial-gradient(2.8px 2.8px at 36% 72%, #f4f8ff, transparent 58%),
    radial-gradient(2.6px 2.6px at 58% 24%, #e9f2ff, transparent 58%),
    radial-gradient(3.8px 3.8px at 82% 14%, #ffffff, transparent 58%),
    radial-gradient(2.2px 2.2px at 74% 64%, #dcecff, transparent 58%),
    radial-gradient(3px 3px at 22% 88%, #edf5ff, transparent 58%),
    radial-gradient(2.7px 2.7px at 92% 84%, #f8fbff, transparent 58%);
  animation: drift 36s linear infinite, twinkle-strong 2.6s ease-in-out infinite;
}

body::after {
  z-index: 0;
  opacity: 0.52;
  background-size: 300px 300px;
  background-image:
    radial-gradient(2.6px 2.6px at 8% 44%, #ffffff, transparent 58%),
    radial-gradient(3px 3px at 42% 12%, #f0f6ff, transparent 58%),
    radial-gradient(2.4px 2.4px at 68% 78%, #e1ecff, transparent 58%),
    radial-gradient(3.2px 3.2px at 88% 46%, #f7faff, transparent 58%),
    radial-gradient(2.3px 2.3px at 30% 30%, #dbe9ff, transparent 58%),
    radial-gradient(2.1px 2.1px at 54% 58%, #ffffff, transparent 58%);
  animation: drift 48s linear infinite reverse, twinkle-strong 3.2s ease-in-out infinite reverse;
}

body.night-shift {
  --bg-1: #01030c;
  --bg-2: #060b22;
  --bg-3: #121f4a;
  --card: rgba(10, 15, 40, 0.72);
  --glow: rgba(142, 126, 220, 0.16);
  --accent: #b6a2ff;
  --accent-2: #ecddff;
  background: radial-gradient(circle at 20% 10%, #0f1d46 0%, transparent 30%),
    radial-gradient(circle at 80% 20%, #0a1436 0%, transparent 32%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2) 58%, var(--bg-3));
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

a,
button {
  -webkit-tap-highlight-color: transparent;
}

.site-header {
  position: relative;
  z-index: 1;
  padding-top: 1.2rem;
}

main,
.site-footer {
  position: relative;
  z-index: 1;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo {
  font-size: 1.5rem;
  color: var(--accent-2);
  text-shadow: 0 0 14px var(--glow);
  transition: transform 0.25s ease, text-shadow 0.25s ease;
}

.brand {
  font-family: "Cinzel", serif;
  letter-spacing: 0.08em;
  font-weight: 700;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}

.hero {
  padding: 5.5rem 0 3.8rem;
  text-align: center;
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  letter-spacing: 0.18em;
  font-size: 0.8rem;
}

h1 {
  margin: 1rem 0;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.15;
  font-family: "Cinzel", serif;
  font-weight: 700;
  text-shadow: 0 10px 32px rgba(7, 13, 33, 0.5);
}

.subtitle {
  max-width: 700px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 1.05rem;
}

.actions {
  margin-top: 1.8rem;
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.62rem 1.05rem;
  text-decoration: none;
  color: inherit;
  background: transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  font-size: 0.92rem;
}

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

.btn.primary {
  background: linear-gradient(135deg, rgba(130, 180, 255, 0.3), rgba(201, 222, 255, 0.2));
  border-color: var(--border);
  box-shadow: 0 8px 25px rgba(8, 24, 60, 0.35);
}

.btn.secondary,
.btn.ghost {
  border-color: var(--border);
  background: rgba(8, 20, 48, 0.35);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 1rem auto 2rem;
}

.card {
  position: relative;
  overflow: hidden;
  padding: 1.2rem;
  border-radius: 18px;
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
  box-shadow: 0 10px 30px rgba(5, 10, 32, 0.3);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 35%, rgba(214, 232, 255, 0.18) 50%, transparent 65%);
  transform: translateX(-120%);
  transition: transform 0.6s ease;
  pointer-events: none;
}

.card h2 {
  margin-top: 0;
  font-family: "Cinzel", serif;
  font-size: 1.25rem;
}

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

.constellation {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1rem;
  margin-bottom: 3rem;
}

.panel,
.quote {
  border: 1px solid var(--border);
  border-radius: 22px;
  background: var(--card);
  backdrop-filter: blur(8px);
  padding: 1.4rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.panel h2 {
  margin-top: 0;
}

.panel p,
.panel li {
  color: var(--muted);
}

.panel ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.panel li {
  margin: 0.3rem 0;
}

.quote {
  display: grid;
  place-content: center;
  text-align: center;
}

.quote p {
  font-size: 1.2rem;
  margin: 0 0 0.5rem;
  font-family: "Cinzel", serif;
}

.quote span {
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.1rem 0 1.8rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
}

.tiny-credit {
  margin: 0.38rem 0 0;
  font-size: 0.64rem;
  opacity: 0.68;
  letter-spacing: 0.04em;
}

@media (hover: hover) {
  .logo-wrap:hover .logo {
    transform: rotate(-10deg) scale(1.08);
    text-shadow: 0 0 20px var(--glow);
  }

  .logo-wrap:hover .brand {
    color: var(--accent-2);
    text-shadow: 0 0 18px rgba(173, 207, 255, 0.35);
  }

  .btn.primary:hover {
    box-shadow: 0 12px 30px rgba(66, 130, 235, 0.35);
    border-color: rgba(221, 234, 255, 0.45);
  }

  .btn.secondary:hover,
  .btn.ghost:hover {
    background: rgba(151, 192, 255, 0.16);
    border-color: rgba(219, 233, 255, 0.45);
    box-shadow: 0 10px 24px rgba(8, 24, 60, 0.35);
  }

  .card:hover {
    transform: translateY(-5px);
    border-color: rgba(221, 235, 255, 0.48);
    box-shadow: 0 16px 36px rgba(8, 20, 50, 0.44);
  }

  .card:hover::after {
    transform: translateX(120%);
  }

  .panel:hover,
  .quote:hover {
    transform: translateY(-4px);
    border-color: rgba(221, 235, 255, 0.44);
    box-shadow: 0 14px 34px rgba(9, 21, 51, 0.4);
  }
}

.stars {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background-repeat: repeat;
  opacity: 0.45;
  background-size: 320px 320px;
  animation: twinkle 6.5s ease-in-out infinite alternate;
}

.stars-a {
  background-image: radial-gradient(2.8px 2.8px at 20% 30%, #fff, transparent 50%),
    radial-gradient(2.3px 2.3px at 70% 40%, #d6e4ff, transparent 50%),
    radial-gradient(2.6px 2.6px at 50% 80%, #fff, transparent 50%),
    radial-gradient(2.2px 2.2px at 90% 15%, #d9f0ff, transparent 50%),
    radial-gradient(2px 2px at 35% 55%, #f2f6ff, transparent 50%),
    radial-gradient(2.1px 2.1px at 12% 72%, #d8e9ff, transparent 50%),
    radial-gradient(2.4px 2.4px at 82% 68%, #f6faff, transparent 50%);
  animation: drift 28s linear infinite, twinkle 5.8s ease-in-out infinite alternate;
}

.stars-b {
  opacity: 0.3;
  background-size: 380px 380px;
  background-image: radial-gradient(2.2px 2.2px at 25% 10%, #fff, transparent 50%),
    radial-gradient(2.8px 2.8px at 80% 55%, #e6edff, transparent 50%),
    radial-gradient(2.5px 2.5px at 45% 65%, #fff, transparent 50%),
    radial-gradient(2px 2px at 10% 75%, #d7ddff, transparent 50%),
    radial-gradient(2.1px 2.1px at 62% 24%, #edf4ff, transparent 50%),
    radial-gradient(2.4px 2.4px at 92% 84%, #e8f3ff, transparent 50%),
    radial-gradient(1.9px 1.9px at 38% 88%, #ffffff, transparent 50%);
  animation: drift 42s linear infinite reverse, twinkle 7.2s ease-in-out infinite alternate-reverse;
}

.meteor-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.meteor-cluster {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.meteor {
  position: absolute;
  width: var(--meteor-length, 230px);
  height: var(--meteor-size, 7px);
  left: var(--meteor-left, 90vw);
  top: var(--meteor-top, 18vh);
  border-radius: 999px;
  transform-origin: right center;
  transform: rotate(var(--meteor-angle, -30deg));
  background:
    radial-gradient(ellipse at 84% 50%, rgba(248, 253, 255, 0.9) 0%, rgba(226, 241, 255, 0.74) 18%, rgba(201, 227, 255, 0.34) 40%, rgba(192, 220, 255, 0) 66%),
    radial-gradient(ellipse at 62% 50%, rgba(188, 222, 255, 0.2) 0%, rgba(178, 215, 255, 0.1) 34%, rgba(178, 215, 255, 0) 76%),
    linear-gradient(90deg,
      rgba(154, 202, 255, 0) 0%,
      rgba(171, 214, 255, 0.08) 36%,
      rgba(193, 227, 255, 0.2) 62%,
      rgba(225, 243, 255, 0.54) 85%,
      rgba(255, 255, 255, 0.78) 100%);
  box-shadow: 0 0 8px rgba(186, 220, 255, 0.28), 0 0 20px rgba(109, 170, 255, 0.2);
  filter: blur(0.45px);
  mix-blend-mode: screen;
  opacity: var(--meteor-alpha, 0);
  animation: meteor-fall var(--meteor-duration, 2200ms) cubic-bezier(0.18, 0.52, 0.2, 1)
    var(--meteor-delay, 0ms) forwards;
}

.meteor.meteor-reverse {
  background:
    radial-gradient(ellipse at 16% 50%, rgba(248, 253, 255, 0.9) 0%, rgba(226, 241, 255, 0.74) 18%, rgba(201, 227, 255, 0.34) 40%, rgba(192, 220, 255, 0) 66%),
    radial-gradient(ellipse at 38% 50%, rgba(188, 222, 255, 0.2) 0%, rgba(178, 215, 255, 0.1) 34%, rgba(178, 215, 255, 0) 76%),
    linear-gradient(90deg,
      rgba(255, 255, 255, 0.78) 0%,
      rgba(225, 243, 255, 0.54) 15%,
      rgba(193, 227, 255, 0.2) 38%,
      rgba(171, 214, 255, 0.08) 64%,
      rgba(154, 202, 255, 0) 100%);
}

.meteor::before {
  content: "";
  position: absolute;
  right: -1px;
  top: 50%;
  width: calc(var(--meteor-size, 7px) * 0.85);
  height: calc(var(--meteor-size, 7px) * 0.85);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-50%);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.78), 0 0 18px rgba(170, 211, 255, 0.42);
}

.meteor.meteor-reverse::before {
  right: auto;
  left: -1px;
}

.meteor::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: calc(var(--meteor-size, 7px) * 3.1);
  height: calc(var(--meteor-size, 7px) * 3.1);
  border-radius: 50%;
  transform: translate(20%, -50%);
  background: radial-gradient(circle, rgba(238, 248, 255, 0.42) 0%, rgba(192, 224, 255, 0.2) 42%, rgba(238, 248, 255, 0) 76%);
}

.meteor.meteor-reverse::after {
  right: auto;
  left: 0;
  transform: translate(-20%, -50%);
}

.meteor-frag {
  position: absolute;
  left: var(--meteor-left, 90vw);
  top: var(--meteor-top, 18vh);
  width: var(--frag-size, 3px);
  height: var(--frag-size, 3px);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.95) 0%, rgba(216, 236, 255, 0.55) 52%, rgba(216, 236, 255, 0) 100%);
  box-shadow: 0 0 6px rgba(196, 225, 255, 0.45);
  mix-blend-mode: screen;
  opacity: 0;
  animation: meteor-frag-fall var(--meteor-duration, 2200ms) ease-out var(--meteor-delay, 0ms) forwards;
}

@keyframes drift {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-80px);
  }
}

@keyframes twinkle {
  0% {
    opacity: 0.22;
    filter: brightness(0.9);
  }
  50% {
    opacity: 0.5;
    filter: brightness(1.15);
  }
  100% {
    opacity: 0.34;
    filter: brightness(1);
  }
}

@keyframes twinkle-strong {
  0% {
    opacity: 0.25;
    filter: brightness(0.85);
  }
  50% {
    opacity: 0.9;
    filter: brightness(1.35);
  }
  100% {
    opacity: 0.35;
    filter: brightness(1);
  }
}

@keyframes meteor-fall {
  0% {
    opacity: 0;
    transform: translate3d(0, 0, 0) rotate(var(--meteor-angle, -30deg)) scale(0.4, 0.55);
  }
  18% {
    opacity: calc(var(--meteor-alpha, 1) * 0.72);
  }
  56% {
    opacity: calc(var(--meteor-alpha, 1) * 0.6);
  }
  82% {
    opacity: calc(var(--meteor-alpha, 1) * 0.35);
  }
  100% {
    opacity: 0;
    transform: translate3d(var(--meteor-dx, -70vw), var(--meteor-dy, 46vh), 0)
      rotate(var(--meteor-angle, -30deg)) scale(0.95, 0.86);
  }
}

@keyframes meteor-frag-fall {
  0% {
    opacity: 0;
    transform: translate3d(var(--frag-offset-x, 0px), var(--frag-offset-y, 0px), 0) scale(0.6);
  }
  20% {
    opacity: 0.45;
  }
  100% {
    opacity: 0;
    transform: translate3d(
      calc(var(--meteor-dx, -70vw) + var(--frag-drift-x, 0px)),
      calc(var(--meteor-dy, 46vh) + var(--frag-drift-y, 0px)),
      0
    ) scale(1);
  }
}

@media (max-width: 900px) {
  .container {
    width: min(1100px, 94vw);
  }

  .navbar {
    flex-wrap: wrap;
    gap: 0.7rem;
  }

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

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

  .hero {
    padding: 4rem 0 3rem;
  }

  .subtitle {
    font-size: 0.98rem;
  }

  .panel,
  .quote,
  .card {
    border-radius: 16px;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding-top: max(0.6rem, env(safe-area-inset-top));
  }

  .logo {
    font-size: 1.25rem;
  }

  .brand {
    font-size: 0.94rem;
  }

  .hero {
    padding: 3.1rem 0 2.2rem;
  }

  .eyebrow {
    font-size: 0.72rem;
    letter-spacing: 0.14em;
  }

  h1 {
    font-size: clamp(1.65rem, 8.2vw, 2.2rem);
    margin: 0.8rem 0;
  }

  .subtitle {
    font-size: 0.92rem;
    line-height: 1.6;
  }

  .actions {
    gap: 0.65rem;
  }

  .btn {
    min-height: 44px;
    padding: 0.66rem 1rem;
    font-size: 0.9rem;
  }

  .actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }

  .card {
    padding: 1rem;
  }

  .card h2,
  .panel h2 {
    font-size: 1.08rem;
  }

  .card p,
  .panel p,
  .panel li {
    font-size: 0.92rem;
    line-height: 1.65;
  }

  .panel,
  .quote {
    padding: 1.05rem;
  }

  .quote p {
    font-size: 1.03rem;
  }

  .site-footer {
    font-size: 0.8rem;
    padding-bottom: max(1rem, env(safe-area-inset-bottom));
  }
}