:root {
  --bg: #f6f5f2; --card: #fff; --ink: #1f1d1a; --muted: #6b665e; --line: #e4e0d8;
  --accent: #e8590c; --ok: #2b8a3e; --ng: #c92a2a; --warn: #e67700;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #171614; --card: #22201d; --ink: #eeeae4; --muted: #a39d93; --line: #35322d; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.7 "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif; }
header.top { padding: 14px 16px; border-bottom: 1px solid var(--line); }
.brand { color: var(--ink); font-weight: 700; text-decoration: none; }
main { max-width: 760px; margin: 0 auto; padding: 16px; }
h1 { font-size: 22px; margin: 8px 0 16px; }
h2 { font-size: 17px; margin: 0 0 12px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.flash { padding: 10px 14px; border-radius: 8px; }
.flash.ok { background: color-mix(in srgb, var(--ok) 14%, transparent); }
.flash.ng { background: color-mix(in srgb, var(--ng) 14%, transparent); }
.muted { color: var(--muted); font-size: 13px; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 99px; font-size: 13px; font-weight: 600; }
.badge.active { background: color-mix(in srgb, var(--ok) 18%, transparent); color: var(--ok); }
.badge.other { background: color-mix(in srgb, var(--warn) 18%, transparent); color: var(--warn); }
.btn, button { display: inline-block; background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: 9px 16px; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn.sub, button.sub { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
input[type=text], input[type=number], textarea { width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--ink); font: inherit; }
textarea { min-height: 84px; }
.check label { display: inline; color: var(--ink); font-size: 15px; }
fieldset { border: 0; padding: 0; margin: 0 0 18px; }
legend { font-weight: 700; margin-bottom: 4px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 6px 4px; border-bottom: 1px solid var(--line); }
td.n { text-align: right; font-variant-numeric: tabular-nums; }
ul.todo { padding-left: 18px; margin: 0; }
code.url { display: block; word-break: break-all; padding: 8px; background: var(--bg); border-radius: 6px; }
a { color: var(--accent); }
header.top a { color: var(--ink); text-decoration: none; margin-left: 12px; }