:root{
  --bg:#fff;
  --text:#111827;
  --muted:#6b7280;
  --line:#e5e7eb;
  --card:#fff;
  --accent:#2563eb;
  --max: 980px;
  --radius: 14px;
}

*{ box-sizing:border-box; }

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "メイリオ", Meiryo, sans-serif;
  line-height:1.7;
}

a{ color:var(--accent); text-decoration:none; }
a:hover{ text-decoration:underline; }

.container{
  max-width:var(--max);
  margin:0 auto;
  padding:0 16px;
}

.header{
  position:sticky;
  top:0;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);
  z-index:10;
}

.header-inner{
  min-height:60px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}

.brand-title{ font-weight:900; font-size:16px; }
.brand-sub{ color:var(--muted); font-size:12px; }

.card{
  margin:16px 0;
  padding:16px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--card);
}

.h1{ margin:0 0 6px; font-size:22px; font-weight:900; }
.h2{ margin:0 0 8px; font-size:16px; font-weight:900; }
.lead{ margin:0 0 12px; color:var(--muted); font-size:14px; }
.small{ font-size:12px; }

.label{
  display:block;
  margin:10px 0 6px;
  font-weight:800;
  font-size:13px;
}

.grid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap:12px;
}

.field{ min-width:0; }

.input, .select{
  width:100%;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  padding:10px 12px;
  font-size:16px; /* iOSズーム防止 */
  background:#fff;
  color:var(--text);
}

.row{
  display:flex;
  gap:12px;
  align-items:center;
  flex-wrap:wrap;
}

.check{
  display:inline-flex;
  align-items:center;
  gap:8px;
  user-select:none;
  font-size:14px;
}

.check input{
  width:18px;
  height:18px;
}

.hint{
  margin-top:8px;
  color:var(--muted);
  font-size:12px;
}

.actions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:14px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:44px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  font-weight:800;
  cursor:pointer;
  white-space:nowrap;
}

.btn-primary{
  border-color:var(--accent);
  background:var(--accent);
  color:#fff;
}

.btn-ghost{ background:transparent; }

.chips{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

.chip{
  height:38px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  cursor:pointer;
  font-weight:800;
  font-size:13px;
}

.linkcards{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap:12px;
}

.linkcard{
  text-align:left;
  padding:14px;
  border:1px solid var(--line);
  border-radius:14px;
  background:#fff;
  cursor:pointer;
}

.lc-title{ font-weight:900; font-size:14px; margin-bottom:4px; }
.lc-text{ color:var(--muted); font-size:12px; }

.history{
  display:flex;
  flex-direction:column;
  gap:10px;
}

.hist-item{
  border:1px solid var(--line);
  border-radius:12px;
  padding:12px;
  display:grid;
  grid-template-columns: 1fr auto;
  gap:10px;
  align-items:center;
}

.hist-q{ font-weight:900; font-size:14px; }
.hist-meta{ color:var(--muted); font-size:12px; }
.hist-actions{ justify-self:end; }

.mini{
  height:34px;
  padding:0 10px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  font-weight:800;
  cursor:pointer;
}

.empty{
  color:var(--muted);
  font-size:13px;
  padding:6px 0;
}

@media (max-width: 720px){
  .grid{ grid-template-columns: 1fr; }
  .linkcards{ grid-template-columns: 1fr; }
  .btn{ width: 100%; }
  .chip{ width: 100%; }
  .hist-item{ grid-template-columns: 1fr; }
  .hist-actions{ justify-self:start; }
}