:root{
  /* Light theme (site-wide) */
  --bg:#f6f7fb;
  --panel:#ffffff;
  --panel2:#f1f3f6;
  --text:#0b1220;
  --muted:#4b5563;
  --line:#e5e7eb;
  --accent:#2563eb;
  --danger:#dc2626;
  --ok:#16a34a;
  --shadow: 0 10px 26px rgba(0,0,0,.10);
  --r:14px;
  --r2:18px;
  --container: 980px;
  --tap: 44px;
  font-synthesis-weight:none;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", "Segoe UI", Arial, sans-serif;
  background:
    radial-gradient(1100px 560px at 18% 0%, rgba(37,99,235,.10), transparent 60%),
    radial-gradient(900px 520px at 92% 8%, rgba(22,163,74,.08), transparent 55%),
    var(--bg);
  color:var(--text);
}
a{color:inherit}
.container{max-width:var(--container); margin:0 auto; padding:0 14px;}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  min-height:var(--tap);
  padding:10px 14px;
  border:1px solid var(--line);
  border-radius:12px;
  background: linear-gradient(180deg, #ffffff, #f6f7fb);
  color:var(--text);
  text-decoration:none;
  cursor:pointer;
  gap:8px;
}
.btn.primary{
  border-color: rgba(37,99,235,.35);
  box-shadow: 0 0 0 3px rgba(37,99,235,.10);
}
.btn.danger{border-color: rgba(220,38,38,.35);}
.badge{
  display:inline-flex; gap:6px; align-items:center;
  padding:5px 10px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:12px;
  color:var(--muted);
  background: rgba(0,0,0,.02);
}
.card{
  background: var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r2);
  box-shadow: var(--shadow);
}
.card.pad{padding:14px;}
.h1{font-size:28px; margin:0 0 8px;}
.h2{font-size:18px; margin:0 0 10px;}
.muted{color:var(--muted);}
.grid{display:grid; gap:12px;}
@media (min-width: 860px){ .grid.cols2{grid-template-columns: 1fr 1fr;} }
.input{
  width:100%;
  min-height:var(--tap);
  border-radius:12px;
  border:1px solid var(--line);
  background: #fff;
  color:var(--text);
  padding:10px 12px;
}
.input:focus{outline:2px solid rgba(37,99,235,.22); outline-offset:1px;}
textarea.input{min-height: 120px; resize: vertical;}
.hr{height:1px;background:var(--line);margin:14px 0;}
.notice{
  border:1px solid rgba(37,99,235,.25);
  background: rgba(37,99,235,.06);
  padding:10px 12px;
  border-radius:12px;
  color: var(--text);
}
.notice.danger{
  border-color: rgba(220,38,38,.22);
  background: rgba(220,38,38,.06);
}
.kv{
  display:flex; justify-content:space-between; gap:10px;
  padding:10px 0;
  border-bottom:1px solid var(--line);
}
.kv:last-child{border-bottom:none}
.kv .k{color:var(--muted); font-size:13px}
.kv .v{font-weight:700}