:root {
  color-scheme: dark;
  font-family: "Segoe UI", "微软雅黑", Arial, sans-serif;
  background: #080b14;
  color: #eef2ff;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-height: 100vh;
}
img {
  display: block;
  max-width: 100%;
}

.hero {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 3rem 1.5rem;
  background: radial-gradient(circle at top left, #4b6bff 0%, #0b1223 45%);
}
.game-icon {
  width: 140px;
  min-width: 140px;
  border-radius: 30px;
  background: rgba(255,255,255,0.08);
  padding: 20px;
}
.hero-text {
  max-width: 640px;
}
.eyebrow {
  margin: 0 0 0.75rem;
  color: #8ea5ff;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.85rem;
}
h1 {
  margin: 0;
  font-size: clamp(2.5rem, 4vw, 4rem);
  line-height: 1.05;
}
.subtitle {
  margin: 1.25rem 0 0;
  font-size: 1.05rem;
  line-height: 1.8;
  color: #d8dcff;
}
.download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 1.5rem;
  padding: 0.95rem 1.6rem;
  border-radius: 999px;
  background: #6e87ff;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}
.download-button:hover {
  transform: translateY(-1px);
  background: #576eff;
  box-shadow: 0 16px 32px rgba(50, 89, 255, 0.18);
}
.download-button:focus-visible {
  outline: 3px solid rgba(110, 135, 255, 0.35);
  outline-offset: 3px;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 3.5rem;
}
.intro-card,
.gallery,
.download-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 22px;
  padding: 1.75rem;
  margin-bottom: 1.75rem;
  backdrop-filter: blur(14px);
}
.download-card {
  display: grid;
  gap: 1rem;
  text-align: center;
}
.download-card p {
  margin: 0;
  color: #d1d8f2;
}
.intro-card h2,
.gallery h2 {
  margin-top: 0;
  font-size: 1.55rem;
}
.intro-card p {
  margin: 1rem 0 0;
  line-height: 1.9;
  color: #cfd3f8;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}
.card {
  overflow: hidden;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.08);
  background: #101523;
}
.card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}
.card h3 {
  margin: 0;
  padding: 1rem;
  font-size: 1.05rem;
  color: #e7ecff;
}
.footer {
  text-align: center;
  padding: 1rem 0 2rem;
  color: #8893b5;
}
@media (max-width: 720px) {
  .hero {
    padding: 2rem 1rem;
  }
  .game-icon {
    width: 120px;
    min-width: 120px;
  }
}