/* 恋屋官网样式 —— 暖珊瑚色调，与 App 主题一致 */
:root {
  --primary: #C94B4B;
  --primary-dark: #A83C3C;
  --primary-container: #FFE4E1;
  --secondary: #8B6F9E;
  --gold: #C8A951;
  --bg: #FFFBFA;
  --surface: #FFFFFF;
  --on-surface: #1C1B1F;
  --on-surface-variant: #6B6570;
  --outline: #E0DBE2;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--on-surface);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* 顶部导航 */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--outline);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: 1px;
}

.logo .en {
  font-size: 13px;
  color: var(--on-surface-variant);
  font-weight: 400;
  margin-left: 8px;
  letter-spacing: 2px;
}

.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}

.nav-links a {
  color: var(--on-surface-variant);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.2s;
}

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

/* Hero 区域 */
.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 24px 60px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background: var(--primary-container);
  color: var(--primary);
  font-size: 13px;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 52px;
  font-weight: 700;
  color: var(--on-surface);
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.hero .subtitle {
  font-size: 20px;
  color: var(--on-surface-variant);
  margin-bottom: 12px;
}

.hero .slogan {
  font-size: 16px;
  color: var(--primary);
  margin-bottom: 40px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 28px;
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.25s;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(201, 75, 75, 0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(201, 75, 75, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary-container);
}

/* 功能特性 */
.features {
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px 24px;
}

.features h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 48px;
}

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

.feature-card {
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: 16px;
  padding: 28px;
  transition: all 0.25s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  border-color: var(--primary);
}

.feature-icon {
  font-size: 36px;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 19px;
  margin-bottom: 10px;
  color: var(--on-surface);
}

.feature-card p {
  font-size: 14px;
  color: var(--on-surface-variant);
}

/* 内容页（隐私政策、用户协议等） */
.doc-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.doc-container h1 {
  font-size: 30px;
  text-align: center;
  margin-bottom: 8px;
  color: var(--on-surface);
}

.doc-meta {
  text-align: center;
  color: var(--on-surface-variant);
  font-size: 14px;
  margin-bottom: 40px;
}

.doc-container h2 {
  font-size: 20px;
  margin: 32px 0 12px;
  color: var(--on-surface);
  padding-left: 12px;
  border-left: 4px solid var(--primary);
}

.doc-container p {
  font-size: 15px;
  margin-bottom: 12px;
  color: var(--on-surface);
}

.doc-container ul, .doc-container ol {
  margin: 0 0 16px 24px;
  font-size: 15px;
}

.doc-container li {
  margin-bottom: 8px;
}

.doc-container .highlight {
  background: #FFF8E1;
  border: 1px solid #FFE082;
  border-radius: 8px;
  padding: 16px;
  font-size: 14px;
  color: #5D4037;
  margin: 16px 0;
}

.doc-container .notice {
  background: var(--primary-container);
  border-radius: 8px;
  padding: 16px;
  font-size: 14px;
  color: var(--primary-dark);
  margin: 16px 0;
}

/* 页脚 */
.footer {
  border-top: 1px solid var(--outline);
  background: var(--surface);
  padding: 40px 24px;
  text-align: center;
  color: var(--on-surface-variant);
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--on-surface-variant);
  text-decoration: none;
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer .company {
  font-size: 13px;
  line-height: 2;
}

/* 响应式 */
@media (max-width: 640px) {
  .hero h1 {
    font-size: 36px;
  }
  .hero .subtitle {
    font-size: 17px;
  }
  .nav-links {
    gap: 16px;
  }
  .nav-links a {
    font-size: 14px;
  }
}

/* 备案号样式 */
.beian {
  margin-top: 8px;
  font-size: 12px;
}

.beian a {
  color: var(--on-surface-variant);
  text-decoration: none;
}

.beian a:hover {
  color: var(--primary);
}

/* 公安备案图标 */
.beian-icon {
  height: 13px;
  width: auto;
  vertical-align: -1px;
  margin-right: 3px;
  border: 0;
}