:root {
  --bg: #f5f5f7;
  --text: #1d1d1f;
  --text-2: #6e6e73;
  --accent: #0071e3;
  --border: rgba(0,0,0,.08);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-nav {
  max-width: 980px; margin: 0 auto; padding: 22px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { font-size: 17px; font-weight: 700; color: var(--text); }
.brand:hover { text-decoration: none; }
.nav-links { display: flex; gap: 22px; font-size: 14px; }
.nav-links a { color: var(--text-2); }

.hero {
  max-width: 980px; margin: 0 auto; padding: 90px 24px 70px; text-align: center;
}
.hero h1 { font-size: 52px; line-height: 1.15; letter-spacing: -.02em; font-weight: 700; }
.hero p { font-size: 21px; color: var(--text-2); margin-top: 18px; max-width: 640px; margin-left: auto; margin-right: auto; }
.hero-cta { margin-top: 34px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block; border-radius: 980px; padding: 12px 26px; font-size: 15px; font-weight: 500;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { text-decoration: none; background: #0077ed; }
.btn-ghost { background: rgba(0,0,0,.05); color: var(--text); }
.btn-ghost:hover { text-decoration: none; background: rgba(0,0,0,.08); }

.features { max-width: 980px; margin: 0 auto; padding: 30px 24px 90px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature {
  background: #fff; border-radius: 20px; padding: 28px;
}
.feature h3 { font-size: 17px; margin-bottom: 8px; }
.feature p { font-size: 14px; color: var(--text-2); }

.site-footer {
  border-top: 1px solid var(--border); padding: 26px 24px; font-size: 12.5px; color: var(--text-2);
}
.footer-inner { max-width: 980px; margin: 0 auto; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }

/* 法律文本页 */
.legal {
  max-width: 760px; margin: 0 auto; padding: 40px 24px 90px;
}
.legal-head { margin-bottom: 28px; }
.legal-head h1 { font-size: 32px; letter-spacing: -.01em; }
.legal-meta { color: var(--text-2); font-size: 13.5px; margin-top: 8px; }
.lang-switch { margin-top: 14px; font-size: 13.5px; }
.legal h2 { font-size: 19px; margin: 32px 0 10px; }
.legal h3 { font-size: 15.5px; margin: 22px 0 8px; }
.legal p, .legal li { font-size: 14.5px; color: #2d2d32; }
.legal ul, .legal ol { padding-left: 22px; margin: 8px 0; }
.legal li { margin: 4px 0; }
.legal .note { background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; font-size: 13.5px; color: var(--text-2); margin: 16px 0; }

@media (max-width: 720px) {
  .hero h1 { font-size: 36px; }
  .hero p { font-size: 17px; }
  .feature-grid { grid-template-columns: 1fr; }
}