:root { font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif; }
body { margin: 0; background:#f6f7f9; color:#111; }
header { position: sticky; top:0; background:#fff; border-bottom:1px solid #e5e7eb; padding:12px 16px; }
main { max-width: 860px; margin: 0 auto; padding: 16px; }
.row { display:flex; gap:10px; flex-wrap: wrap; align-items: center; }
.header { justify-content:space-between; }
.tabs button { padding: 8px 10px; border:1px solid #d1d5db; background:#fff; border-radius: 10px; cursor:pointer; }
.tabs button.active { border-color:#111; }
.card { background:#fff; border:1px solid #e5e7eb; border-radius: 16px; padding: 14px; margin: 12px 0; box-shadow: 0 1px 1px rgba(0,0,0,0.03); }
.muted { color:#6b7280; font-size: 12px; }
.title { font-weight: 700; font-size: 16px; }
input, button { font: inherit; }
input[type="text"], input[type="number"] { padding: 8px 10px; border:1px solid #d1d5db; border-radius: 10px; background:#fff; }
button.primary { background:#111; color:#fff; border:1px solid #111; }
button.danger { background:#fff; color:#b91c1c; border:1px solid #fecaca; }
.tasks { margin-top: 10px; display:flex; flex-direction: column; gap: 8px; }
label.task { display:flex; gap:10px; align-items:center; padding:8px 10px; border:1px solid #e5e7eb; border-radius: 12px; }
.pill { display:inline-block; padding:2px 8px; border-radius: 999px; border:1px solid #e5e7eb; font-size: 12px; background:#f9fafb; }
.right { margin-left:auto; }
textarea { width:100%; min-height: 110px; padding: 10px; border:1px solid #d1d5db; border-radius: 12px; }
.small { font-size: 13px; }
.hr { height:1px; background:#e5e7eb; margin: 10px 0; }
.warn { background:#fffbeb; border:1px solid #fde68a; padding:10px; border-radius: 12px; }
code { background:#f3f4f6; padding:2px 6px; border-radius: 8px; }