:root{
  --bg:#fbfcff;
  --bg2:#f3f7ff;
  --card:#ffffff;
  --bd:#e6eaf2;
  --muted:#5b6472;
  --danger:#b91c1c;
  --ink:#0f172a;

  --accent:#2563eb; /* blue */
  --accent2:#22c55e; /* green */
  --radius:14px;
  --shadow: 0 8px 24px rgba(15,23,42,.06);
  --shadow2: 0 6px 14px rgba(15,23,42,.08);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans JP",sans-serif;
  margin:0;
  background: radial-gradient(1200px 500px at 50% -120px, var(--bg2), var(--bg));
  color:var(--ink);
  line-height:1.55;
}
a{color:inherit}
a:hover{opacity:.92}

header{
  position:sticky;top:0;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--bd);
  padding:12px 16px;
  z-index:10
}
main{max-width:980px;margin:0 auto;padding:12px 16px 92px}

.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.header-actions{display:flex;gap:8px;flex-wrap:wrap}

.card{
  background:var(--card);
  border:1px solid var(--bd);
  border-radius:var(--radius);
  padding:14px;
  box-shadow: var(--shadow);
}

.btn{
  border:1px solid var(--bd);
  background:var(--card);
  padding:10px 12px;
  border-radius:12px;
  cursor:pointer;
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  gap:8px;
  box-shadow: 0 1px 0 rgba(15,23,42,.03);
}
.btn:hover{box-shadow:var(--shadow2)}
.btn:active{transform:translateY(1px)}
.btn.primary{
  background:linear-gradient(180deg, #2f6df7, var(--accent));
  color:#fff;
  border-color:rgba(37,99,235,.9);
}
.btn.secondary{
  background:linear-gradient(180deg, #2ad26f, var(--accent2));
  color:#fff;
  border-color:rgba(34,197,94,.9);
}
.btn.danger{border-color:#ef4444;color:var(--danger);background:#fff}

.muted{color:var(--muted)}
.error{color:var(--danger)}

input,textarea,select{
  border:1px solid var(--bd);
  border-radius:12px;
  padding:11px 12px;
  background:#fff;
  font-size:16px;
}
input:focus,textarea:focus,select:focus,.btn:focus{
  outline:3px solid rgba(37,99,235,.18);
  outline-offset:2px;
}
textarea{width:100%}

.badge{
  font-size:12px;
  padding:2px 10px;
  border-radius:999px;
  border:1px solid var(--bd);
  background: rgba(37,99,235,.06);
}
.badge.ok{background:rgba(34,197,94,.08);border-color:rgba(34,197,94,.25)}
.badge.warn{background:rgba(245,158,11,.10);border-color:rgba(245,158,11,.25)}
.small{font-size:12px}
hr{border:none;border-top:1px solid var(--bd);margin:12px 0}

.kv{
  background:linear-gradient(180deg, rgba(37,99,235,.10), rgba(34,197,94,.06));
  border:1px solid rgba(37,99,235,.18);
  border-radius:var(--radius);
  padding:14px;
  box-shadow: var(--shadow);
}

.sticky-cta{
  position:fixed;
  left:0; right:0; bottom:0;
  background:rgba(255,255,255,.94);
  backdrop-filter: blur(10px);
  border-top:1px solid var(--bd);
  padding:10px 12px;
  z-index:20;
}
.sticky-cta .inner{max-width:980px;margin:0 auto;display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap}


/* v52 perf: images */
img{max-width:100%; height:auto;}

/* --- SliderS v03 header + filters (A案) --- */
.site-header{
  padding:10px 14px;
  border-bottom:1px solid #eee;
  background:#fff;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:inherit;
  min-width:0;
}
.brand-logo{ height:36px; width:auto; display:block; }
.brand-text{
  font-weight:900;
  font-size:28px;
  letter-spacing:.5px;
  line-height:1;
  white-space:nowrap;
}
.nav-actions{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:8px;
  flex-wrap:wrap;
}
.btn.nav{
  padding:4px 8px; /* header buttons: much thinner */
  font-size:12px;
  border-radius:10px;
}
.btn.toggle{ opacity:.65; }
.btn.toggle.active{
  opacity:1;
  background:#111;
  color:#fff;
  border-color:#111;
}

@media (max-width:520px){
  .brand-logo{ height:30px; }
  .brand-text{ font-size:24px; }
  .btn.nav{ padding:3px 7px; font-size:12px; }
}