* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #1f2937;
  background: #f7f4ef;
}
a { color: inherit; }
.seo-shell { max-width: 1080px; margin: 0 auto; padding: 28px 20px 48px; }
.seo-nav { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 26px; }
.seo-brand { font-weight: 800; text-decoration: none; color: #f05f63; }
.seo-nav-links { display: flex; gap: 14px; flex-wrap: wrap; font-size: 14px; color: #6b7280; }
.seo-nav-links a { text-decoration: none; }
.seo-hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 28px;
  align-items: center;
  min-height: 420px;
}
.seo-hero h1 { font-size: 42px; line-height: 1.12; margin: 0 0 16px; color: #111827; letter-spacing: 0; }
.seo-hero p { font-size: 17px; line-height: 1.8; color: #4b5563; margin: 0 0 22px; }
.seo-kicker { color: #f05f63; font-size: 13px; font-weight: 800; letter-spacing: 0.08em; margin-bottom: 12px; }
.seo-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.seo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  background: #f05f63;
  color: #fff;
}
.seo-btn.secondary { background: #fff; color: #374151; border: 1px solid #e5e7eb; }
.seo-visual img { width: 100%; display: block; border-radius: 8px; box-shadow: 0 20px 60px rgba(31,41,55,0.16); }
.seo-section { margin-top: 34px; padding: 26px; background: rgba(255,255,255,0.74); border: 1px solid #eadfd5; border-radius: 8px; }
.seo-section h2 { margin: 0 0 14px; font-size: 26px; color: #111827; }
.seo-section h3 { margin: 20px 0 8px; font-size: 18px; color: #1f2937; }
.seo-section p, .seo-section li { line-height: 1.85; color: #4b5563; }
.seo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.seo-card { padding: 16px; border: 1px solid #eee2d8; border-radius: 8px; background: #fff; }
.seo-card strong { display: block; margin-bottom: 6px; color: #111827; }
.seo-faq details { padding: 14px 0; border-bottom: 1px solid #eee2d8; }
.seo-faq summary { cursor: pointer; font-weight: 700; color: #1f2937; }
.seo-footer { margin-top: 34px; color: #6b7280; font-size: 13px; }
@media (max-width: 760px) {
  .seo-hero { grid-template-columns: 1fr; min-height: 0; }
  .seo-hero h1 { font-size: 31px; }
  .seo-grid { grid-template-columns: 1fr; }
}