/* =====================================
共通ヘッダーCSS（全ページ共通）
===================================== */

.site-header{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  z-index:100;
  background:rgba(255,255,255,0.9);
  backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(18,52,86,0.08);
}

.header-inner{
  max-width:1200px;
  margin:0 auto;
  padding:14px 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}

/* ロゴ */
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
}

.logo img{
  height:34px;
}

.logo span{
  color:#123456;
  font-family:"Noto Serif JP", serif;
  font-weight:600;
  font-size:18px;
  letter-spacing:0;
}

/* ナビ */
.nav ul{
  list-style:none;
  display:flex;
  gap:30px;
  margin:0;
  padding:0;
  align-items:center;
}

.nav a{
  text-decoration:none;
  color:#123456;
  font-size:14px;
  font-family:"Noto Sans JP",sans-serif;
}

.nav a:hover{
  opacity:0.75;
}

/* CTA */
.nav a.contact-link{
  background:#b8322a;
  color:#fff;
  padding:11px 18px;
  border-radius:6px;
}

/* ヘッダースペース */
.header-spacer{
  height:66px;
}

/* レスポンシブ */
@media (max-width:900px){
  .header-inner{
    flex-direction:column;
    align-items:flex-start;
    gap:10px;
    padding:12px 16px;
  }

  .nav ul{
    flex-wrap:wrap;
    gap:16px;
  }

  .header-spacer{
    height:96px;
  }
}