/* 基础样式和变量 */
:root {
  --main-bg: #18142a;
  --main-purple: #4b44a4;
  --main-white: #f5f5fa;
  --card-bg: #2a2540;
  --accent: #a48cf0;
  --border-radius: 16px;
  --font-main: 'Montserrat', 'Noto Sans SC', Arial, sans-serif;
}

body {
  margin: 0;
  font-family: var(--font-main);
  background: var(--main-bg);
  color: var(--main-white);
  min-height: 100vh;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--card-bg);
  padding: 24px 32px;
}
.logo {
  font-size: 1.6rem;
  font-weight: bold;
  color: var(--accent);
}
.main-nav a {
  color: var(--main-white);
  text-decoration: none;
  margin-left: 24px;
  font-size: 1rem;
  transition: color 0.2s;
}
.main-nav a:hover {
  color: var(--accent);
}

.hero {
  padding: 48px 16px 0 16px;
  text-align: left;
}
.hero h1 {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--accent);
}
.hero-img {
  width: 100%;
  max-width: 600px;
  margin: 0 auto 24px auto;
}
.hero-img img {
  width: 100%;
  border-radius: var(--border-radius);
  object-fit: cover;
}
.hero-desc {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.1rem;
  color: var(--main-white);
}

.intro-blocks {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: center;
  margin: 48px 0 0 0;
}
.intro-block {
  background: var(--main-purple);
  color: var(--main-white);
  border-radius: var(--border-radius);
  padding: 32px;
  min-width: 260px;
  max-width: 400px;
  flex: 1 1 260px;
  box-sizing: border-box;
}
.intro-block h2 {
  margin-top: 0;
  font-size: 1.3rem;
}

.rhythm-games {
  margin: 64px 0 0 0;
  text-align: left;
}
.rhythm-games h2 {
  color: var(--accent);
  font-size: 1.5rem;
}
.rhythm-games .games-list {
  display: flex;
  gap: 32px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.game-item {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 16px;
  text-align: center;
  width: 180px;
}
.game-item img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: var(--border-radius);
  background: #ccc;
}
.game-title {
  margin-top: 12px;
  font-weight: 600;
  color: var(--main-white);
}

.equipments {
  margin: 64px 0 0 0;
}
.equipments-list {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.equipment-item {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 16px;
  text-align: center;
  width: 180px;
}
.equipment-item img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: var(--border-radius);
  background: #ccc;
}
.equipment-title {
  margin-top: 12px;
  font-weight: 600;
  color: var(--main-white);
}
.equipment-link {
  text-align: center;
}
.btn {
  display: inline-block;
  background: var(--main-purple);
  color: var(--main-white);
  border-radius: 32px;
  padding: 10px 28px;
  text-decoration: none;
  font-weight: 600;
  margin-top: 12px;
  transition: background 0.2s;
}
.btn:hover {
  background: var(--accent);
}

.policy {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  align-items: center;
  margin: 64px 0 0 0;
}
.policy-img {
  flex: 1 1 220px;
  max-width: 220px;
}
.policy-img img {
  width: 100%;
  border-radius: var(--border-radius);
  background: #ccc;
}
.policy-content {
  flex: 2 1 320px;
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 32px;
}
.policy-content h2 {
  margin-top: 0;
  color: var(--accent);
}
.policy-content ul {
  padding-left: 20px;
}

.contact {
  margin: 64px 0 0 0;
}
.contact-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: center;
}
.contact-card {
  background: var(--main-white);
  color: var(--main-purple);
  border-radius: var(--border-radius);
  padding: 24px;
  min-width: 220px;
  max-width: 260px;
  flex: 1 1 220px;
  box-sizing: border-box;
  text-align: left;
}
.contact-title {
  font-weight: bold;
  font-size: 1.1rem;
  margin-bottom: 8px;
}
.contact-desc {
  font-size: 0.98rem;
  margin-bottom: 16px;
}
.contact-card .btn {
  background: var(--main-purple);
  color: var(--main-white);
  font-size: 0.95rem;
  padding: 8px 20px;
}

.site-footer {
  background: var(--card-bg);
  color: var(--main-white);
  padding: 32px 16px 16px 16px;
  text-align: center;
  margin-top: 64px;
  border-top: 2px solid var(--main-purple);
}
.footer-left {
  font-weight: bold;
  color: var(--accent);
  margin-bottom: 8px;
}
.footer-nav {
  margin-bottom: 8px;
}
.footer-nav a {
  color: var(--main-white);
  text-decoration: none;
  margin: 0 12px;
  font-size: 1rem;
}
.footer-nav a:hover {
  color: var(--accent);
}
.footer-right {
  margin-bottom: 8px;
}
.footer-bottom {
  font-size: 0.9rem;
  color: #bdb7e2;
}

/* 响应式布局 */
@media (max-width: 900px) {
  .intro-blocks, .equipments-list, .rhythm-games .games-list, .contact-cards, .policy {
    flex-direction: column;
    gap: 20px;
    align-items: stretch;
  }
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px;
  }
  .main-nav {
    margin-top: 12px;
  }
}
@media (max-width: 600px) {
  .hero h1 {
    font-size: 2rem;
  }
  .intro-block, .contact-card, .policy-content {
    padding: 16px;
    min-width: unset;
    max-width: unset;
  }
  .site-footer {
    padding: 16px 8px;
  }
}