.sb-commercial-shell { max-width: 1120px; margin: 0 auto; padding: 0 15px; }
.sb-page { margin: 0; color: #334f62; background: #f5f9fc; font-family: "Open Sans", "Noto Sans SC", "Noto Sans JP", Arial, sans-serif; }
.sb-page *, .sb-page *::before, .sb-page *::after { box-sizing: border-box; }
.sb-page a { color: #1267a8; }
.sb-page-header { position: sticky; top: 0; z-index: 20; background: #0d2f46; box-shadow: 0 8px 24px rgba(8,26,39,.12); }
.sb-page-header .sb-commercial-shell { display: flex; min-height: 68px; align-items: center; justify-content: space-between; gap: 20px; }
.sb-page-brand { color: #fff !important; font-weight: 700; text-decoration: none; }
.sb-page-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.sb-page-nav a { color: #e6f0f6; font-weight: 600; text-decoration: none; }
.sb-page-nav .sb-nav-cta { padding: 9px 15px; border-radius: 999px; background: #fdc134; color: #0d2f46; }
.sb-page-hero { padding: 54px 0 30px; background: linear-gradient(180deg,#edf6fc,#f8fbff); }
.sb-page-hero h1 { max-width: 900px; margin: 0 0 16px; color: #0d2f46; font-size: clamp(2rem,4vw,3.2rem); line-height: 1.2; }
.sb-page-hero p { max-width: 850px; font-size: 1.08rem; line-height: 1.8; }
.sb-eyebrow { margin: 0 0 9px !important; color: #0d2f46; font-weight: 700; letter-spacing: .04em; }
.sb-page-footer { padding: 28px 0; background: #0d2f46; color: #e6f0f6; }
.sb-page-footer a { color: #fdc134; }
.sb-page-footer p { margin: 6px 0; }
.sb-list { padding-left: 1.25rem; line-height: 1.85; }
.sb-faq details { padding: 15px 0; border-bottom: 1px solid #dce5ec; }
.sb-faq summary { color: #0d2f46; font-weight: 700; cursor: pointer; }
.sb-faq details p { margin: 10px 0 0; }
.sb-commercial-section { padding: 34px 0; }
.sb-commercial-panel { padding: 30px 26px; border: 1px solid #e1eaf1; border-radius: 16px; background: #fff; box-shadow: 0 10px 26px rgba(18, 44, 64, .05); }
.sb-commercial-panel h2 { margin-top: 0; color: #0d2f46; }
.sb-answer { margin: 26px 0; padding: 23px 25px; border-left: 4px solid #1677c8; background: #eef6fc; }
.sb-answer strong { display: block; margin-bottom: 8px; color: #0d2f46; font-size: 1.12rem; }
.sb-answer p:last-child { margin-bottom: 0; }
.sb-decision-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin: 22px 0; }
.sb-decision-card { padding: 21px; border: 1px solid #dce7ef; border-radius: 12px; background: #f9fbfd; }
.sb-decision-card h3 { margin-top: 0; color: #0d2f46; }
.sb-decision-card p:last-child, .sb-decision-card ul:last-child { margin-bottom: 0; }
.sb-comparison { width: 100%; margin: 22px 0; border-collapse: collapse; }
.sb-comparison th, .sb-comparison td { padding: 13px 14px; border: 1px solid #d7e2ea; vertical-align: top; text-align: left; }
.sb-comparison th { background: #edf4f8; color: #0d2f46; }
.sb-proof { margin: 26px 0; padding: 24px; border: 1px solid #d9e4ec; border-radius: 12px; background: #f8fafc; }
.sb-proof dl { margin: 0; }
.sb-proof dl div { display: grid; grid-template-columns: 150px 1fr; gap: 18px; padding: 11px 0; border-bottom: 1px solid #e0e8ee; }
.sb-proof dl div:last-child { border-bottom: 0; }
.sb-proof dt { font-weight: 700; color: #0d2f46; }
.sb-proof dd { margin: 0; }
.sb-related { padding: 22px; border: 1px solid #d9e4ec; border-radius: 12px; background: #fff; }
.sb-related a { display: inline-block; margin: 5px 15px 5px 0; font-weight: 700; }
.sb-commercial-cta { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin: 28px 0 0; padding: 25px; border-radius: 14px; background: #0d2f46; color: #fff; }
.sb-commercial-cta h2, .sb-commercial-cta strong { color: #fff; }
.sb-commercial-cta p { margin: 6px 0 0; color: #dfeaf3; }
.sb-commercial-cta a { display: inline-block; padding: 11px 18px; border-radius: 999px; background: #fdc134; color: #0d2f46; font-weight: 700; text-decoration: none; white-space: nowrap; }
.contact .info-box.sb-contact-wechat-card { padding: 14px 12px 16px; }
.contact .sb-contact-wechat-card picture { display: block; line-height: 0; }
.contact .sb-contact-wechat-card .sb-contact-wechat-qr { display: block; aspect-ratio: 1 / 1; object-fit: contain; width: 100%; height: auto; max-width: 220px; min-width: 180px; margin: 0 auto; }
.contact .sb-contact-wechat-card h3 { margin: 8px 0 0; line-height: 1.35; }
@media (max-width: 680px) {
  .sb-page-header .sb-commercial-shell { padding-top: 12px; padding-bottom: 12px; align-items: flex-start; flex-direction: column; }
  .sb-page-nav { gap: 10px 13px; font-size: .88rem; }
  .sb-page-hero { padding-top: 38px; }
  .sb-commercial-panel { padding: 24px 18px; }
  .sb-decision-grid { grid-template-columns: 1fr; }
  .sb-comparison { display: block; overflow-x: auto; font-size: 13px; }
  .sb-proof dl div { grid-template-columns: 1fr; gap: 4px; }
  .sb-commercial-cta { align-items: flex-start; flex-direction: column; }
  .contact .info-box.sb-contact-wechat-card { padding: 12px 10px 14px; }
}