:root {
  --bg-sky: #040616;
  --bg-panel: rgba(7, 16, 44, 0.75);
  --primary: #c095ff;
  --secondary: #78deff;
  --accent: #ff8fb1;
  --text-main: #f5f5ff;
  --text-muted: #b5b9d9;
  --border-soft: rgba(255, 255, 255, 0.08);
  --blur: blur(18px);
  --shadow: 0 20px 60px rgba(6, 15, 48, 0.7);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --transition: all 0.35s ease;
}

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

body {
  margin: 0;
  font-family: "Nunito", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--text-main);
  background: radial-gradient(circle at top, #130742, var(--bg-sky));
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

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

.anime-body {
  background-attachment: fixed;
}

main {
  width: min(1200px, 92vw);
  margin: 0 auto;
  padding: 130px 0 80px;
}

.starfield {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(circle at 20% 20%, rgba(192, 149, 255, 0.25), transparent 45%),
    radial-gradient(circle at 80% 10%, rgba(120, 222, 255, 0.25), transparent 40%);
}

.starfield .star {
  position: absolute;
  width: 3px;
  height: 3px;
  background: radial-gradient(circle, #fff, transparent);
  border-radius: 50%;
  top: var(--y);
  left: var(--x);
  opacity: 0;
  animation: twinkle linear infinite;
}

@keyframes twinkle {
  0% {
    opacity: 0;
    transform: scale(0.5);
  }
  20% {
    opacity: 0.9;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: scale(0.3);
  }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  width: min(1200px, 92vw);
  margin: 24px auto 0;
  padding: 18px 28px;
  border-radius: var(--radius-lg);
  background: rgba(5, 6, 22, 0.75);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(192, 149, 255, 0.9), rgba(120, 222, 255, 0.9));
  display: grid;
  place-items: center;
  font-size: 20px;
  color: #050816;
  font-weight: 700;
  box-shadow: 0 8px 25px rgba(192, 149, 255, 0.45);
}

.brand-eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.brand-name {
  margin: 2px 0 0;
  font-size: 18px;
  font-weight: 700;
}

.nav-links {
  flex: 1;
  display: flex;
  gap: 22px;
  justify-content: center;
  font-weight: 600;
  color: var(--text-muted);
}

.nav-links a {
  padding: 8px 0;
  position: relative;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--secondary), var(--primary));
  opacity: 0;
  transform: scaleX(0.3);
  transition: var(--transition);
}

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

.nav-links a:hover::after {
  opacity: 1;
  transform: scaleX(1);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  border: 1px solid transparent;
  transition: var(--transition);
}

.btn.solid {
  background: linear-gradient(120deg, var(--primary), var(--accent));
  color: #050816;
  box-shadow: 0 10px 25px rgba(192, 149, 255, 0.4);
}

.btn.solid:hover {
  transform: translateY(-2px) scale(1.02);
}

.btn.ghost {
  border-color: var(--border-soft);
  color: var(--text-main);
  background: transparent;
}

.btn.ghost:hover {
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--secondary);
}

.btn.outline {
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.05);
}

.hero {
  margin-top: 80px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 48px;
  position: relative;
}

.hero-text {
  padding: 32px;
  border-radius: var(--radius-xl);
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow);
}

.hero-eyebrow {
  margin: 0 0 12px;
  font-size: 14px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--secondary);
}

.hero-text h1 {
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.15;
  margin: 0 0 16px;
}

.hero-copy {
  color: var(--text-muted);
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-tags span {
  padding: 6px 14px;
  font-size: 13px;
  border-radius: 999px;
  background: rgba(192, 149, 255, 0.15);
  border: 1px solid rgba(192, 149, 255, 0.35);
}

.hero-visual {
  position: relative;
  min-height: 360px;
  perspective: 1200px;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(0.5px);
  opacity: 0.8;
}

.orb-main {
  width: 320px;
  height: 320px;
  left: 40px;
  top: 20px;
  background: radial-gradient(circle, rgba(192, 149, 255, 0.9), rgba(6, 9, 27, 0.2));
  animation: pulse 6s ease-in-out infinite;
}

.orb-secondary {
  width: 180px;
  height: 180px;
  right: 60px;
  bottom: 40px;
  background: radial-gradient(circle, rgba(120, 222, 255, 0.85), rgba(6, 9, 27, 0.2));
  animation: pulse 5.5s ease-in-out infinite reverse;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(0.95);
    opacity: 0.65;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.9;
  }
}

.floating-card {
  position: absolute;
  width: 210px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: rgba(5, 6, 22, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 12px 32px rgba(4, 4, 20, 0.6);
  backdrop-filter: blur(10px);
  animation: float 8s ease-in-out infinite;
}

.floating-card .card-title {
  margin: 0;
  font-size: 14px;
  color: var(--text-muted);
}

.floating-card .card-value {
  margin: 8px 0 4px;
  font-size: 32px;
  font-weight: 700;
  color: var(--secondary);
}

.floating-card .card-desc {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

.card-one {
  top: 20px;
  right: 40px;
}

.card-two {
  bottom: 40px;
  left: 20px;
  animation-duration: 7s;
}

.card-three {
  top: 160px;
  left: 90px;
  animation-duration: 9s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-14px);
  }
}

.section-header {
  text-align: center;
  margin: 100px auto 48px;
  width: min(720px, 90%);
}

.section-eyebrow {
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--secondary);
  font-size: 13px;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(28px, 4vw, 40px);
  margin: 0 0 12px;
}

.section-header p {
  color: var(--text-muted);
  margin: 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.feature-card {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: rgba(9, 12, 36, 0.8);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow);
  min-height: 260px;
}

.feature-card h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.feature-card p {
  color: var(--text-muted);
  margin-bottom: 18px;
}

.feature-card ul {
  margin: 0;
  padding-left: 20px;
  color: var(--secondary);
}

.scene-gallery {
  margin: 100px 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.scene-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  background: linear-gradient(135deg, rgba(192, 149, 255, 0.2), rgba(5, 6, 22, 0.9));
  padding: 28px;
  min-height: 200px;
  box-shadow: var(--shadow);
}

.scene-card.large {
  grid-column: span 2;
}

.scene-eyebrow {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--secondary);
  text-transform: uppercase;
}

.scene-card h3 {
  margin: 10px 0;
}

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

.crew-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.crew-card {
  padding: 24px;
  background: rgba(8, 11, 32, 0.85);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  text-align: center;
  box-shadow: var(--shadow);
}

.crew-avatar {
  width: 64px;
  height: 64px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: linear-gradient(140deg, var(--primary), var(--secondary));
  color: #050816;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.crew-card h3 {
  margin: 8px 0;
}

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

.logbook {
  margin-top: 90px;
}

.timeline {
  display: grid;
  gap: 18px;
}

.timeline article {
  padding: 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  background: rgba(8, 10, 28, 0.85);
  position: relative;
  overflow: hidden;
}

.timeline article::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(120, 222, 255, 0.18), transparent 70%);
  pointer-events: none;
}

.timeline-date {
  margin: 0;
  font-size: 13px;
  color: var(--secondary);
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.timeline h3 {
  margin: 8px 0;
}

.timeline p {
  margin: 0;
  color: var(--text-muted);
}

.site-footer {
  width: min(1200px, 92vw);
  margin: 60px auto 30px;
  padding: 20px 0 40px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 18px;
}

.nav-toggle {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.02);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text-main);
  transition: var(--transition);
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

@media (max-width: 1080px) {
  .site-header {
    flex-wrap: wrap;
  }
  .nav-links {
    order: 3;
    width: 100%;
    flex-wrap: wrap;
    justify-content: flex-start;
  }
  .header-cta {
    order: 2;
  }
}

@media (max-width: 768px) {
  main {
    width: 100%;
    margin: 0;
    padding: 100px clamp(16px, 6vw, 28px) 80px;
  }
  .site-header {
    position: relative;
    inset: unset;
    width: 100%;
    margin: 0;
    border-radius: 0;
    padding: 16px clamp(16px, 5vw, 28px);
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "brand toggle"
      "cta cta"
      "nav nav";
    gap: 12px 16px;
  }
  .brand {
    grid-area: brand;
  }
  .nav-toggle {
    display: flex;
    grid-area: toggle;
    justify-self: end;
  }
  .nav-links {
    grid-area: nav;
    display: none;
    flex-direction: column;
    width: 100%;
    margin: 0;
    padding: 12px 0 0;
    border-top: 1px solid var(--border-soft);
    gap: 6px;
  }
  .nav-links.is-open {
    display: flex;
  }
  .header-cta {
    grid-area: cta;
    width: 100%;
    justify-content: flex-start;
    gap: 10px;
    flex-wrap: wrap;
  }
  .hero {
    margin-top: 60px;
  }
  .floating-card {
    position: relative;
    margin: 12px auto;
    animation: float 6s ease-in-out infinite;
  }
  .hero-visual {
    min-height: auto;
  }
}

@media (max-width: 520px) {
  .hero-text,
  .feature-card,
  .scene-card,
  .crew-card,
  .timeline article {
    padding: 22px;
  }
  .header-cta {
    flex-direction: column;
    gap: 8px;
  }
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}