/* Shared site updates: SNS brand icons, merged products/parts page, footer QR placement */
.header-social-logo {
  display: block;
  width: 24px;
  height: 24px;
  object-fit: contain;
}
.header-line-btn .header-line-logo { width: 25px; height: 25px; }
.instagram-header-link {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  display: grid;
  place-items: center;
  border: 1px solid #e2e8ee;
  border-radius: 12px;
  background: #fff;
  transition: transform .2s ease, box-shadow .2s ease;
}
.instagram-header-link:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,.08); }
.instagram-header-link .header-instagram-logo { width: 25px; height: 25px; }

.footer-contact-list { display: grid; gap: 15px; margin: 0; padding: 0; list-style: none; }
.footer-line-block { display: grid; justify-items: start; gap: 10px; }
.footer-channel-title,
.footer-instagram { display: inline-flex; align-items: center; gap: 9px; text-decoration: none; }
.footer-social-logo { display: block; width: 27px; height: 27px; object-fit: contain; flex: 0 0 27px; }
.footer-line-block .footer-line-qr,
.footer-line-block .qr { display: block; width: min(150px, 100%); height: auto; margin: 0; }
.footer-instagram { margin-top: 2px; }

/* Top-page entry to the dedicated introduction page */
.promotion-entry { padding: 34px 0; background: linear-gradient(135deg,#edf8ff,#fff); border-top: 1px solid #dbeaf5; border-bottom: 1px solid #dbeaf5; }
.promotion-entry-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 32px; }
.promotion-entry-label { display: block; margin-bottom: 7px; color: #075aaa; font-weight: 800; letter-spacing: .12em; font-size: .78rem; }
.promotion-entry h2 { margin: 0 0 8px; color: #143f68; font-size: clamp(1.35rem,2.4vw,2rem); }
.promotion-entry p { margin: 0; color: #536c80; line-height: 1.75; }
.promotion-entry-btn { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; padding: 13px 22px; color: #fff; background: #075aaa; border-radius: 999px; font-weight: 800; white-space: nowrap; }

.parts-section { scroll-margin-top: 96px; background: linear-gradient(180deg, #f7fbff 0%, #ffffff 100%); border-top: 1px solid #e1edf6; }
.parts-section-heading { max-width: 760px; margin-bottom: 30px; }
.parts-section-heading .en { display: inline-block; margin-bottom: 8px; color: #075aaa; font-weight: 800; letter-spacing: .12em; }
.parts-service-grid { margin-top: 26px; }
.parts-contact-box { margin-top: 32px; padding: 24px 28px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border: 1px solid #d7e8f5; border-radius: 18px; background: #fff; box-shadow: 0 12px 32px rgba(20,63,104,.07); }
.parts-contact-box strong { display: block; margin-bottom: 6px; color: #143f68; font-size: 1.08rem; }
.parts-contact-box p { margin: 0; color: #60788c; line-height: 1.7; }
.parts-contact-box .btn { flex: 0 0 auto; }

@media (max-width: 1050px) {
  .nav { gap: 12px; }
  .nav a { font-size: .88rem; }
}
@media (max-width: 900px) {
  .promotion-entry-inner { grid-template-columns: 1fr; }
  .promotion-entry-btn { width: 100%; }
  .parts-contact-box { align-items: stretch; flex-direction: column; }
  .parts-contact-box .btn { width: 100%; }
}
@media (max-width: 760px) {
  .instagram-header-link { display: none; }
  .footer-line-block .footer-line-qr { width: 132px; }
}

/* Product detail links restored on the merged products page */
.product-card-link {
  display: block;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.product-card-link:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 45px rgba(18,60,115,.12);
  border-color: #a9cdea;
}
.product-card-link:focus-visible {
  outline: 3px solid rgba(7,90,170,.28);
  outline-offset: 3px;
}
.product-card-image,
.product-card-body { display: block; }
.product-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 14px;
  color: #075aaa;
  font-size: .86rem;
  font-weight: 800;
}
.product-card-cta svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}


/* SEO content expansion: top H1, guide pages, product information, works index */
.hero-seo-title { margin: 12px 0 14px; max-width: 760px; color: #123d69; font-size: clamp(2rem, 4.5vw, 3.65rem); line-height: 1.18; letter-spacing: -.025em; }
.hero-seo-lead { max-width: 680px; margin: 0 0 24px; color: #526d83; font-size: clamp(1rem, 1.6vw, 1.16rem); line-height: 1.85; }
.seo-guide-entry { background: #fff; }
.seo-link-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 16px; }
.seo-link-grid > a { min-height: 112px; display: flex; flex-direction: column; justify-content: center; gap: 7px; padding: 20px; color: #143f68; text-decoration: none; border: 1px solid #d9e8f3; border-radius: 16px; background: #fff; box-shadow: 0 10px 28px rgba(20,63,104,.055); transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.seo-link-grid > a:hover { transform: translateY(-3px); border-color: #9dc7e5; box-shadow: 0 16px 34px rgba(20,63,104,.1); }
.seo-link-grid strong { font-size: 1rem; line-height: 1.45; }
.seo-link-grid span { color: #61798d; font-size: .88rem; line-height: 1.55; }
.seo-guide-more, .works-index-more { margin: 28px 0 0; text-align: center; }
.seo-page-hero h1 { max-width: 980px; }
.seo-content-wrap { max-width: 1120px; }
.seo-intro-box { margin-bottom: 44px; padding: 28px 32px; border-left: 5px solid #075aaa; border-radius: 0 16px 16px 0; background: #eef7fd; }
.seo-intro-box p { margin: 0; color: #334f66; font-size: 1.06rem; line-height: 1.95; }
.seo-info-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.seo-info-card { padding: 25px; border: 1px solid #dbe8f2; border-radius: 18px; background: #fff; box-shadow: 0 10px 28px rgba(20,63,104,.055); }
.seo-info-card h3 { margin: 0 0 10px; color: #143f68; font-size: 1.08rem; }
.seo-info-card p { margin: 0; color: #5b7286; line-height: 1.8; }
.seo-section-gap { margin-top: 64px; }
.seo-point-box { margin-top: 54px; padding: 30px 34px; border-radius: 20px; background: linear-gradient(135deg,#123d69,#075aaa); color: #fff; }
.seo-point-box h2 { margin: 0 0 18px; font-size: clamp(1.35rem,2vw,1.8rem); }
.seo-point-box ul { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px 28px; margin: 0 0 14px; padding-left: 1.25em; }
.seo-point-box li { line-height: 1.7; }
.seo-point-box p { margin: 0; opacity: .88; line-height: 1.75; }
.seo-faq-block { margin-top: 60px; }
.seo-faq-block h2, .seo-related-block h2 { color: #143f68; font-size: clamp(1.45rem,2.3vw,2rem); }
.seo-faq-block details, .seo-product-faq details { margin: 0 0 12px; border: 1px solid #dce8f1; border-radius: 14px; background: #fff; }
.seo-faq-block summary, .seo-product-faq summary { cursor: pointer; padding: 18px 22px; color: #143f68; font-weight: 800; }
.seo-faq-block details p, .seo-product-faq details p { margin: 0; padding: 0 22px 20px; color: #566f83; line-height: 1.8; }
.seo-related-block { margin-top: 54px; }
.seo-related-card-grid, .seo-guide-index-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; }
.seo-related-card-grid a, .seo-guide-index-grid a { display: flex; flex-direction: column; gap: 8px; padding: 22px; color: #143f68; text-decoration: none; border: 1px solid #dce9f2; border-radius: 16px; background: #fff; }
.seo-related-card-grid span, .seo-guide-index-grid span { color: #61798d; font-size: .9rem; line-height: 1.6; }
.seo-detail-section { padding: 76px 0; background: linear-gradient(180deg,#fff,#f5faff); }
.seo-detail-intro { max-width: 850px; margin-bottom: 36px; }
.seo-detail-intro .en { color: #075aaa; font-weight: 800; letter-spacing: .12em; font-size: .8rem; }
.seo-detail-intro h2 { margin: 10px 0 14px; color: #143f68; font-size: clamp(1.55rem,3vw,2.4rem); }
.seo-detail-intro p { margin: 0; color: #597185; line-height: 1.85; }
.seo-detail-columns { display: grid; grid-template-columns: minmax(0,1.4fr) minmax(300px,.6fr); gap: 28px; align-items: start; }
.seo-detail-columns h2 { color: #143f68; font-size: 1.35rem; }
.seo-facility-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; }
.seo-facility-grid article { padding: 22px; border: 1px solid #dbe8f2; border-radius: 16px; background: #fff; }
.seo-facility-grid h3 { margin: 0 0 8px; color: #143f68; font-size: 1rem; }
.seo-facility-grid p { margin: 0; color: #5e768a; line-height: 1.75; font-size: .92rem; }
.seo-check-box { padding: 26px; border-radius: 18px; background: #123d69; color: #fff; }
.seo-check-box h2 { margin-top: 0; color: #fff; }
.seo-check-box ul { padding-left: 1.2em; }
.seo-check-box li { margin-bottom: 9px; line-height: 1.65; }
.seo-check-box p { margin-bottom: 0; opacity: .86; line-height: 1.7; font-size: .9rem; }
.seo-product-faq, .seo-related-links { margin-top: 52px; }
.seo-product-faq > h2, .seo-related-links > h2 { color: #143f68; font-size: 1.45rem; }
.seo-related-links > div { display: flex; flex-wrap: wrap; gap: 12px; }
.seo-related-links a { display: inline-flex; align-items: center; gap: 16px; padding: 13px 18px; color: #075aaa; font-weight: 800; text-decoration: none; border: 1px solid #bfd9ec; border-radius: 999px; background: #fff; }
.works-index-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; }
.works-index-card { overflow: hidden; border: 1px solid #dbe7f0; border-radius: 20px; background: #fff; box-shadow: 0 14px 36px rgba(20,63,104,.08); }
.works-index-card > a { display: grid; grid-template-columns: minmax(220px,.85fr) minmax(0,1.15fr); color: inherit; text-decoration: none; }
.works-index-image img { width: 100%; height: 100%; min-height: 300px; object-fit: cover; }
.works-index-body { padding: 30px; }
.works-index-body > span { color: #075aaa; font-size: .8rem; font-weight: 800; letter-spacing: .08em; }
.works-index-body h2 { margin: 10px 0 12px; color: #143f68; font-size: 1.55rem; line-height: 1.45; }
.works-index-body p { color: #60788b; line-height: 1.8; }
.works-index-body strong { color: #075aaa; }
@media (max-width: 980px) { .seo-link-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .seo-info-grid, .seo-related-card-grid, .seo-guide-index-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .seo-detail-columns { grid-template-columns: 1fr; } .seo-facility-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .works-index-grid { grid-template-columns: 1fr; } }
@media (max-width: 680px) { .hero-seo-title { font-size: clamp(1.8rem,9vw,2.55rem); } .seo-link-grid, .seo-info-grid, .seo-related-card-grid, .seo-guide-index-grid, .seo-facility-grid { grid-template-columns: 1fr; } .seo-point-box { padding: 25px 22px; } .seo-point-box ul { grid-template-columns: 1fr; } .seo-intro-box { padding: 22px; } .works-index-card > a { grid-template-columns: 1fr; } .works-index-image img { min-height: 220px; } }

.seo-support-note { margin: 0 0 34px; padding: 18px 22px; border: 1px solid #bcd9ed; border-radius: 14px; background: #eef8ff; }
.seo-support-note strong { display: block; margin-bottom: 6px; color: #075aaa; }
.seo-support-note p { margin: 0; color: #526e84; line-height: 1.75; }