:root {
  color-scheme: dark;
  --page-padding: clamp(1.25rem, 4vw, 4.5rem);
  --text: #f7f8f4;
  --muted: rgba(247, 248, 244, 0.7);
  --line: rgba(255, 255, 255, 0.2);
  --surface: rgba(6, 14, 22, 0.7);
  --accent: #d9f0e8;
  --ink: #0a171c;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  min-height: 100%;
  background: #08131f;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 78% 18%, rgba(61, 112, 116, 0.42), transparent 34rem),
    radial-gradient(circle at 20% 82%, rgba(33, 63, 83, 0.65), transparent 36rem),
    linear-gradient(135deg, #071018 0%, #0c2630 54%, #09131d 100%);
  color: var(--text);
}

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

a {
  color: inherit;
}

.scene {
  position: fixed;
  z-index: 0;
  inset: -1.5rem;
  overflow: hidden;
  pointer-events: none;
  transform: translate3d(var(--parallax-x, 0), var(--parallax-y, 0), 0);
  transition: transform 360ms cubic-bezier(0.2, 0.75, 0.25, 1);
  will-change: transform;
}

.scene::before,
.scene::after {
  position: absolute;
  z-index: 2;
  inset: 0;
  content: "";
}

.scene::before {
  background:
    linear-gradient(90deg, rgba(3, 10, 16, 0.9) 0%, rgba(3, 10, 16, 0.68) 37%, rgba(3, 10, 16, 0.22) 72%, rgba(3, 10, 16, 0.38) 100%),
    linear-gradient(0deg, rgba(3, 9, 15, 0.76) 0%, transparent 34%, rgba(3, 9, 15, 0.18) 100%);
}

.scene::after {
  opacity: 0.25;
  background-image: radial-gradient(rgba(255, 255, 255, 0.22) 0.55px, transparent 0.55px);
  background-size: 5px 5px;
}

.daily-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  filter: saturate(0.82) contrast(1.04);
  transform: scale(1.045);
  transition: opacity 900ms ease;
}

.has-daily-image .daily-image {
  opacity: 1;
  animation: daily-image-drift 24s ease-in-out infinite alternate;
}

@keyframes daily-image-drift {
  from {
    transform: translate3d(-0.3%, -0.2%, 0) scale(1.045);
  }

  to {
    transform: translate3d(0.35%, 0.25%, 0) scale(1.075);
  }
}

.page-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  width: min(100%, 1600px);
  min-height: 100vh;
  min-height: 100svh;
  margin: 0 auto;
  padding: 0 var(--page-padding);
}

.site-header {
  display: flex;
  align-items: center;
  min-height: clamp(5.5rem, 11vh, 8rem);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  border-radius: 0.75rem;
  text-decoration: none;
}

.brand img {
  display: block;
  flex: 0 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 0.75rem;
  box-shadow: 0 0.7rem 2.4rem rgba(0, 0, 0, 0.22);
}

.brand span {
  display: grid;
  gap: 0.12rem;
}

.brand strong {
  font-size: 0.95rem;
  line-height: 1;
  letter-spacing: 0.16em;
}

.brand small {
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.2;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero {
  position: relative;
  display: grid;
  align-items: center;
  min-width: 0;
  padding: clamp(3rem, 8vh, 7rem) 0;
}

.hero-content {
  width: min(100%, 57rem);
}

.hero-intro {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 1.35rem;
  color: var(--accent);
  font-size: clamp(0.78rem, 1vw, 0.9rem);
  font-weight: 650;
  letter-spacing: 0.12em;
}

.hero-intro::before {
  width: 2.5rem;
  height: 1px;
  background: currentColor;
  content: "";
}

h1 {
  max-width: 10ch;
  margin: 0;
  font-size: clamp(3.6rem, 8.8vw, 8.4rem);
  font-weight: 680;
  letter-spacing: -0.075em;
  line-height: 0.88;
}

h1 span {
  color: rgba(247, 248, 244, 0.76);
  font-family: "Songti SC", SimSun, Georgia, serif;
  font-style: italic;
  font-weight: 500;
  letter-spacing: -0.085em;
}

.hero-copy {
  max-width: 34rem;
  margin: clamp(1.75rem, 4vh, 3rem) 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.45vw, 1.15rem);
  line-height: 1.9;
}

.primary-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(2rem, 5vh, 3.5rem);
}

.primary-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.4rem;
  min-width: 10.5rem;
  min-height: 3.25rem;
  padding: 0 1.15rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: var(--surface);
  font-size: 0.94rem;
  font-weight: 650;
  text-decoration: none;
  backdrop-filter: blur(10px);
  transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.primary-link svg {
  width: 1.1rem;
  height: 1.1rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 180ms ease;
}

.primary-link-emphasis {
  border-color: var(--text);
  background: var(--text);
  color: var(--ink);
  backdrop-filter: none;
}

.primary-link:hover {
  border-color: rgba(255, 255, 255, 0.52);
  background: rgba(19, 33, 42, 0.86);
  transform: translateY(-2px);
}

.primary-link-emphasis:hover {
  border-color: var(--accent);
  background: var(--accent);
}

.primary-link:hover svg {
  transform: translateX(0.2rem);
}

.primary-link:active {
  transform: translateY(0);
}

.brand:focus-visible,
.primary-link:focus-visible,
.site-footer a:focus-visible,
.image-credit a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.image-credit {
  position: absolute;
  right: 0;
  bottom: 1.5rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.64);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.image-credit a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  text-underline-offset: 0.25em;
}

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

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: clamp(5.75rem, 12vh, 8rem);
  border-top: 1px solid var(--line);
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.76rem;
}

.copyright {
  flex: 0 0 auto;
  margin: 0;
  letter-spacing: 0.1em;
}

.legal-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem 1.25rem;
  min-width: 0;
}

.legal-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
  transition: color 180ms ease;
}

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

.legal-links img {
  width: 1rem;
  height: 1rem;
}

@media (max-width: 720px) {
  .scene::before {
    background:
      linear-gradient(0deg, rgba(3, 9, 15, 0.86) 0%, rgba(3, 10, 16, 0.48) 58%, rgba(3, 10, 16, 0.58) 100%),
      linear-gradient(90deg, rgba(3, 10, 16, 0.65), rgba(3, 10, 16, 0.18));
  }

  .site-header {
    min-height: 5.25rem;
  }

  .hero {
    align-items: end;
    padding: 4rem 0 5rem;
  }

  h1 {
    font-size: clamp(3.4rem, 18vw, 6rem);
  }

  .primary-links {
    display: grid;
    grid-template-columns: 1fr;
  }

  .primary-link {
    width: 100%;
    min-height: 3.5rem;
  }

  .image-credit {
    right: auto;
    bottom: 1.5rem;
    left: 0;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 0.65rem;
    padding: 1.5rem 0;
  }

  .legal-links {
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0 0.75rem;
  }

  .legal-links a {
    min-height: 2.75rem;
  }
}

@media (max-height: 700px) and (min-width: 721px) {
  .hero {
    padding: 2.5rem 0 4rem;
  }

  h1 {
    font-size: clamp(3.4rem, 10vh, 5rem);
  }

  .hero-copy {
    margin-top: 1.4rem;
  }

  .primary-links {
    margin-top: 1.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .scene {
    inset: 0;
    transform: none !important;
  }

  .has-daily-image .daily-image {
    animation: none;
    transform: scale(1.015);
  }
}