/* ========== カラートークン ========== */
:root{
  --brand:#002b5c;
  --brand-dk:#001f44;
  --bg:#f1f5f9;
  --text:#1e293b;
  --border:#cbd5e1;
  --card:#ffffff;
}

/* ========== Reset & Base ========== */
*{box-sizing:border-box;margin:0;padding:0;}
body{
  font-family:"Noto Sans JP",sans-serif;
  background:var(--bg);
  color:var(--text);
}
a{color:var(--brand);text-decoration:none;transition:opacity .25s;}
a:hover{opacity:.75;}
.l-inner{max-width:1100px;margin:auto;padding:0 1rem;}
.req{color:#dc2626;font-weight:bold;}

/* ========== Header ========== */
.l-header{background:var(--brand-dk);color:#fff; height:90px;}
.header__inner,
.l-header .l-inner{display:flex;align-items:center;justify-content:space-between;height:90px;}
.logo{font-weight:700;letter-spacing:.05em;}

/* ---- ハンバーガー ---- */
.hamburger{display:none;background:none;border:none;cursor:pointer;z-index:100;}
.hamburger span{display:block;width:24px;height:3px;background:#fff;margin:5px 0;transition:.3s;}
.hamburger.is-open span:nth-child(1){transform:translateY(8px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-8px) rotate(-45deg);}
img{
  height:3em;
}
/* ---- ナビ ---- */
.gnav ul{display:flex;gap:2rem;font-weight:600;}
.gnav a{color:#fff; font-size: 20px; list-style: none;text-decoration: none;}
.gnav li{text-decoration: none;}
.gnav a.current{text-decoration:underline;text-underline-offset:2px;}

/* ========== Card Section ========== */
.card{
  background:var(--card);
  border:1px solid #e2e8f0;
  border-radius:8px;
  padding:2.5rem;
  margin-top:2.5rem;
  box-shadow:0 4px 12px rgb(0 0 0/.05);
}
.ttl{font-size:1.6rem;font-weight:700;color:var(--brand);margin-bottom:1.5rem;}
.lead{margin-bottom:1.5rem;line-height:1.7;}
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5rem;}
.field label{display:block;font-weight:600;margin-bottom:.4rem;}
.field input,
.field textarea{
  width:100%;border:1px solid var(--border);border-radius:6px;
  padding:.55rem .8rem;font-size:1rem;
}
.field input:focus,
.field textarea:focus{outline:2px solid rgb(29 78 216 / .4);}
.agree{display:flex;align-items:flex-start;gap:.6rem;margin-top:1rem;font-size:.9rem;}
.btn-area{text-align:center;margin-top:1.8rem;}
.btn-send{
  background:var(--brand);color:#fff;font-weight:600;padding:.8rem 2.8rem;
  border:none;border-radius:6px;cursor:pointer;
  box-shadow:0 2px 4px rgb(0 0 0/.15);
  transition:background .25s,transform .2s;
}
.btn-send:hover{background:var(--brand-dk);transform:translateY(-2px);}

/* ========== Footer ========== */
.footer{background:#111827;color:#d1d5db;margin-top:4rem;padding:3rem 1rem;text-align:center;font-size:.875rem;}
.footer h2{font-weight:700;color:#fff;margin-bottom:1rem;}
.footer .mail{font-size:1.1rem;font-weight:700;color:#fff;margin-bottom:.5rem;}
.footer .btn-form{display:inline-block;margin-top:.8rem;padding:.5rem 1.8rem;background:#fff;color:var(--brand);font-weight:600;border-radius:6px;}
.footer .copy{margin-top:2rem;font-size:.75rem;color:#9ca3af;}

/* ========== Responsive ========== */
@media(max-width:768px){
  .gnav{position:absolute;top:64px;left:0;width:100%;background:var(--brand);display:none;margin-left: 10%; margin-right: 10%;}
  .gnav.is-open{display:block;}
  .gnav ul{flex-direction:column;padding:1rem 0;gap:1rem;text-align:center;}
  .hamburger{display:block;}
}
@media(max-width:480px){
  .form-grid{grid-template-columns:1fr;}
  .btn-send{width:100%;}
}
@media(max-width:1200px){
  .l-inner{margin-left: 10%; margin-right: 10%;}
}