/* assets/css/site.css */
:root{
  --navy:#13293D;
  --sky:#3DA9FC;
  --cream:#FCFAF8;
  --ink:#243545;

  --glass: rgba(255,255,255,.36);
  --glass-strong: rgba(255,255,255,.48);
  --glass-border: rgba(61,169,252,.35);

  --radius-xl: 28px;
  --radius-lg: 22px;
  --shadow: 0 18px 50px rgba(19,41,61,.14);

  --container: 1160px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: system-ui, -apple-system, "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  color:var(--ink);
  background: var(--cream);
  overflow-x:hidden;
}

a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }

.container{
  width:min(var(--container), calc(100% - 48px));
  margin-inline:auto;
}

.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);
  white-space:nowrap;border:0;
}

/* ---------- Header (glass, fixed) ---------- */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:1000;
  pointer-events:none; /* 内部だけ受ける */
}
.header-inner{
  pointer-events:auto;
  width:min(var(--container), calc(100% - 24px));
  margin: 14px auto 0;
  padding: 12px 14px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255,255,255,.55), rgba(255,255,255,.30));
  border:1px solid rgba(61,169,252,.28);
  box-shadow: 0 12px 28px rgba(19,41,61,.12);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  display:flex;
  align-items:center;
  gap:14px;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width: 220px;
}
.brand-mark{
  width:32px;height:32px;
  border-radius:999px;
  background: radial-gradient(circle at 30% 30%, rgba(61,169,252,.35), rgba(19,41,61,.08));
  border:1px solid rgba(61,169,252,.25);
}
.brand-text{
  line-height:1.1;
  color:var(--navy);
  font-weight:800;
  letter-spacing:.02em;
  font-size:14px;
}
.brand-sub{
  font-weight:600;
  font-size:11px;
  opacity:.75;
}

.header-nav{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
}
.header-nav a{
  color: var(--navy);
  font-weight:800;
  font-size:14px;
  padding:10px 12px;
  border-radius: 999px;
  transition: transform .2s ease, background .2s ease;
}
.header-nav a:hover{
  background: rgba(61,169,252,.12);
  transform: translateY(-1px);
}

.header-cta{
  margin-left:6px;
  padding:10px 14px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, var(--navy), rgba(19,41,61,.84));
  box-shadow: 0 12px 24px rgba(19,41,61,.18);
  font-weight:900;
  font-size:14px;
}

/* Burger */
.burger{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  border-radius: 14px;
  border:1px solid rgba(61,169,252,.28);
  background: rgba(255,255,255,.42);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 10px 22px rgba(19,41,61,.12);
  align-items:center;
  justify-content:center;
  gap:5px;
  flex-direction:column;
}
.burger span{
  width:18px;height:2px;border-radius:2px;
  background: var(--navy);
  opacity:.9;
}
@media (max-width: 900px){
  .header-nav{ display:none; }
  .header-cta{ display:none; }
  .burger{ display:flex; }
  .brand{ min-width: unset; }
}

/* Drawer */
.drawer{
  position:fixed;
  inset:0;
  z-index:1100;
  display:none;
}
.drawer.is-open{ display:block; }
.drawer-backdrop{
  position:absolute; inset:0;
  background: rgba(10,20,30,.35);
  backdrop-filter: blur(4px);
}
.drawer-panel{
  position:absolute;
  top:12px; right:12px; left:12px;
  margin-left:auto;
  max-width: 520px;
  border-radius: 24px;
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(61,169,252,.25);
  box-shadow: 0 18px 60px rgba(19,41,61,.22);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  overflow:hidden;
}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 14px 16px;
}
.drawer-title{
  font-weight:900;
  color: var(--navy);
}
.drawer-close{
  width:42px;height:42px;
  border-radius: 14px;
  border:1px solid rgba(61,169,252,.25);
  background: rgba(255,255,255,.5);
}
.drawer-nav{
  padding: 8px 16px 18px;
  display:grid;
  gap:10px;
}
.drawer-nav a{
  padding: 14px 14px;
  border-radius: 16px;
  border:1px solid rgba(61,169,252,.22);
  background: rgba(255,255,255,.46);
  font-weight:900;
  color: var(--navy);
}

/* ---------- Footer ---------- */
.site-footer{
  padding: 46px 0 42px;
  background: linear-gradient(180deg, rgba(19,41,61,.06), rgba(19,41,61,.12));
}
.footer-inner{
  width:min(var(--container), calc(100% - 48px));
  margin-inline:auto;
  padding: 22px 18px;
  border-radius: 22px;
  background: rgba(255,255,255,.52);
  border: 1px solid rgba(61,169,252,.22);
  box-shadow: 0 16px 50px rgba(19,41,61,.10);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  text-align:center;
  color: var(--navy);
}
.footer-name{
  font-weight: 900;
  letter-spacing:.02em;
}
.footer-copy{
  margin-top: 8px;
  font-size: 12px;
  opacity:.75;
}