/* ============================================================
   Kaikou 开口 — 辅助页 Chrome 统一（v2 Apple 风）
   覆盖旧页面 .nav / .page-header / .footer 等类名，
   不改任何页面 URL 与锚点。
   ============================================================ */
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro SC", "SF Pro Display", "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
  color: #1D1D1F;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 900;
  background: rgba(255,255,255,0.72);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  backdrop-filter: saturate(180%) blur(24px);
  border-bottom: 1px solid rgba(0,0,0,0.08);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 32px;
  height: 56px; display: flex; align-items: center; justify-content: space-between;
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-size: 17px; font-weight: 600; color: #1D1D1F; letter-spacing: -0.01em;
}
.nav-brand img { width: 30px; height: 30px; border-radius: 7px; box-shadow: 0 1px 4px rgba(0,0,0,0.15); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a, .nav-links .nav-text-link {
  font-size: 14px; color: #6E6E73; font-weight: 500; letter-spacing: -0.01em; text-decoration: none;
}
.nav-links a:hover { color: #1D1D1F; }
.nav-links .nav-cta {
  color: #fff !important; background: linear-gradient(135deg, #2BC49A 0%, #1A8C6E 45%, #0F6148 100%);
  padding: 7px 18px; border-radius: 980px; font-weight: 600;
  box-shadow: 0 4px 14px -4px rgba(26,140,110,0.5);
  transition: transform .2s, box-shadow .2s;
}
.nav-links .nav-cta:hover { transform: translateY(-1px); color: #fff !important; box-shadow: 0 6px 20px -4px rgba(26,140,110,0.6); }

/* ---------- 页头 ---------- */
.page-header {
  background: #F5F5F7; border-bottom: 1px solid rgba(0,0,0,0.08);
  padding: 64px 32px 56px; text-align: center;
}
.page-header h1 {
  font-size: clamp(32px, 4.4vw, 48px); font-weight: 700;
  letter-spacing: -0.025em; margin-bottom: 10px;
}
.page-header p { font-size: 16.5px; color: #6E6E73; }

/* ---------- 页脚 ---------- */
.footer {
  background: #060A09; color: rgba(255,255,255,0.65);
  padding: 80px 0 36px;
}
.footer-inner {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px;
  padding: 0 32px;
}
.footer h4 { color: #fff; font-size: 13px; font-weight: 600; margin-bottom: 16px; letter-spacing: 0.02em; }
.footer ul { list-style: none; padding: 0; }
.footer li { margin: 9px 0; }
.footer a { color: rgba(255,255,255,0.55); font-size: 13px; text-decoration: none; }
.footer a:hover { color: #fff; }
.footer-bottom {
  max-width: 1200px; margin: 48px auto 0; padding: 24px 32px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 12px; color: rgba(255,255,255,0.35); text-align: center;
}
.footer-bottom a { color: rgba(255,255,255,0.45); }

/* guide 页脚兼容 */
.guide-wrap footer.footer { margin-top: 0; }

@media (max-width: 768px) {
  .nav-inner { padding: 0 22px; }
  .nav-links a:not(.nav-cta), .nav-links .nav-text-link { display: none; }
  .nav-links { gap: 12px; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .page-header { padding: 48px 22px 40px; }
}