:root {
  --bg: #fbfbf9;
  --fg: #1d1f21;
  --muted: #5d6266;
  --line: #d9dbd6;
  --accent: #1b5e9e;
  --ok: #26734d;
  --bad: #a3322b;
  --card: #ffffff;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17191b;
    --fg: #e6e6e3;
    --muted: #a1a6aa;
    --line: #34383b;
    --accent: #6fa8e0;
    --ok: #6cc497;
    --bad: #ec8a83;
    --card: #1f2224;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
header, main { max-width: 860px; margin: 0 auto; padding: 0 16px; }
header { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; padding-top: 20px; }
h1 { font-size: 1.6rem; margin: 0; }
h2 { font-size: 1.15rem; margin: 1.4em 0 .5em; }
.lang button { background: none; border: 0; color: var(--accent); cursor: pointer; font: inherit; padding: 2px; }
.lang button[aria-pressed="true"] { color: var(--fg); font-weight: 600; }
.notice { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--accent); padding: 10px 12px; border-radius: 4px; }
.notice.bad { border-left-color: var(--bad); }
.notice.ok { border-left-color: var(--ok); }
.invite { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; margin: 1em 0; }
.invite dt { color: var(--muted); }
.invite dd { margin: 0; overflow-wrap: anywhere; }
fieldset { border: 1px solid var(--line); border-radius: 6px; padding: 12px 14px; background: var(--card); }
legend { font-weight: 600; padding: 0 6px; }
.choice { display: flex; gap: 10px; align-items: flex-start; padding: 8px 6px; border-radius: 4px; cursor: pointer; }
.choice:hover { background: color-mix(in srgb, var(--accent) 8%, transparent); }
.choice input { margin-top: 5px; }
.choice small { color: var(--muted); }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 14px; margin-top: 10px; }
.grid label, .settings label { display: flex; flex-direction: column; gap: 3px; font-size: .9rem; color: var(--muted); }
.grid .wide { grid-column: 1 / -1; }
input, textarea, select { font: inherit; color: var(--fg); background: var(--bg); border: 1px solid var(--line); border-radius: 4px; padding: 6px 8px; }
#drop { border: 2px dashed var(--line); border-radius: 8px; padding: 22px 16px; text-align: center; background: var(--card); }
#drop.over { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, var(--card)); }
#drop p { margin: 0 0 12px; color: var(--muted); }
.btn, button { display: inline-block; font: inherit; border: 1px solid var(--line); background: var(--bg); color: var(--fg); border-radius: 5px; padding: 7px 14px; cursor: pointer; margin: 3px; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button:disabled { opacity: .5; cursor: default; }
.actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin: 12px 0; }
#total { color: var(--muted); font-variant-numeric: tabular-nums; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
td { padding: 5px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
td.path { overflow-wrap: anywhere; }
td.num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; color: var(--muted); }
td.st { white-space: nowrap; }
td.st.done { color: var(--ok); }
td.st.error { color: var(--bad); }
progress { width: 100%; height: 6px; }
.small { font-size: .85rem; color: var(--muted); }
details { margin: 1.2em 0; }
summary { cursor: pointer; font-weight: 600; }
.settings label { display: inline-flex; margin-right: 16px; }
pre { background: var(--card); border: 1px solid var(--line); padding: 10px; border-radius: 4px; white-space: pre-wrap; word-break: break-all; font-size: .82rem; }
@media (max-width: 600px) { .grid { grid-template-columns: 1fr; } }
td.bar { width: 22%; }