:root {
  --bg: #f4f6f8;
  --card: #fff;
  --text: #1a1f2e;
  --muted: #5c6578;
  --accent: #0d6efd;
  --danger: #c0392b;
  --ok: #198754;
  --border: #dde3ea;
  --demo: #6f42c1;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang HK", "Microsoft JhengHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 24px 16px 48px; }
.badge {
  display: inline-block;
  background: var(--demo);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}
h1 { font-size: 1.6rem; margin: 0 0 8px; }
.sub { color: var(--muted); margin-bottom: 24px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
label { display: block; font-weight: 600; margin-bottom: 8px; }
input[type=text], input[type=file] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
}
.btn {
  display: inline-block;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 1rem;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn-secondary { background: #6c757d; }
.err { color: var(--danger); margin-top: 8px; }
.quota { font-size: 0.95rem; color: var(--muted); }
.quota strong { color: var(--text); }
.result { margin-top: 16px; padding: 12px; background: #f8f9fb; border-radius: 8px; }
.result dl { margin: 0; display: grid; grid-template-columns: 100px 1fr; gap: 6px 12px; }
.result dt { color: var(--muted); }
.result dd { margin: 0; font-weight: 600; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); }
tr.fail td { color: var(--danger); }
tr.history-row { cursor: pointer; }
tr.history-row:hover td { background: #f0f4ff; }
tr.history-row.selected td { background: #e8eeff; }
th { color: var(--muted); font-weight: 600; }
.debug-card h2 { margin-top: 0; font-size: 1.1rem; }
.debug-toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.debug-toolbar select {
  min-width: 160px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
}
.debug-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.debug-tab {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.88rem;
  cursor: pointer;
}
.debug-tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.debug-pane { display: none; }
.debug-pane.active { display: block; }
.debug-pre {
  margin: 0;
  padding: 12px;
  background: #1e1e1e;
  color: #d4d4d4;
  border-radius: 8px;
  font-size: 0.82rem;
  line-height: 1.45;
  overflow: auto;
  max-height: 420px;
  white-space: pre-wrap;
  word-break: break-word;
}
.debug-lines { font-size: 0.85rem; }
.debug-lines td, .debug-lines th { font-size: 0.82rem; }
.debug-empty { color: var(--muted); font-size: 0.92rem; }
.debug-meta { color: var(--muted); font-size: 0.88rem; margin-bottom: 10px; }
.topbar { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.topbar-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.lang-switch { display: flex; gap: 4px; }
.lang-switch button {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.82rem;
  cursor: pointer;
  color: var(--muted);
}
.lang-switch button:hover { background: #f0f4ff; color: var(--text); }
.lang-switch button.active {
  background: var(--demo);
  border-color: var(--demo);
  color: #fff;
}
.topbar .badge { margin-bottom: 0; }
.topbar h1 { margin-top: 8px; }
.quota-banner {
  display: none;
  margin-bottom: 16px;
  padding: 14px 16px;
  background: #fff3cd;
  border: 1px solid #ffecb5;
  border-radius: 10px;
  color: #664d03;
  font-weight: 600;
}
.quota-banner.show { display: block; }