:root {
  --bg: #0f1419;
  --card: #1a2332;
  --text: #e7ecf3;
  --muted: #8b9cb3;
  --accent: #3b82f6;
  --success: #22c55e;
  --error: #ef4444;
  --border: #2d3a4f;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}
.topbar nav a { margin-left: 1.25rem; }
.brand { font-weight: 700; color: var(--text); }
.brand-en { font-weight: 400; font-size: 0.85rem; color: var(--muted); margin-left: 0.35rem; }
.brand-sub { color: var(--muted); margin: 0.25rem 0 0.5rem; }
.brand-sub code { background: #334155; padding: 0.1rem 0.4rem; border-radius: 4px; color: var(--accent); }
.container { max-width: 1100px; margin: 0 auto; padding: 2rem; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.login-card { max-width: 420px; margin: 4rem auto; }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 800px) { .grid-2 { grid-template-columns: 1fr; } }
label { display: block; margin-top: 1rem; margin-bottom: 0.35rem; color: var(--muted); font-size: 0.9rem; }
input, select, textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #0d1117;
  color: var(--text);
}
.btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.55rem 1.1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 0.75rem; text-align: left; border-bottom: 1px solid var(--border); }
.badge { background: #334155; padding: 0.2rem 0.6rem; border-radius: 6px; font-size: 0.85rem; }
.alert { padding: 0.75rem 1rem; border-radius: 8px; margin-bottom: 1rem; }
.alert.success { background: rgba(34,197,94,0.15); color: var(--success); }
.alert.error { background: rgba(239,68,68,0.15); color: var(--error); }
.muted { color: var(--muted); }
.hint { margin-top: 1.5rem; font-size: 0.85rem; color: var(--muted); }
pre { background: #0d1117; padding: 1rem; border-radius: 8px; overflow: auto; font-size: 0.8rem; }
.doc-preview { background: #fff; color: #111; }
.doc-preview .doc { padding: 1rem; }
.doc-preview h1, .doc-preview h2 { color: #111; }
.inline-form { display: inline-block; margin-right: 0.5rem; }
.feedback-list { padding-left: 1.2rem; }
.feedback-list li { margin-bottom: 0.5rem; }
.empty { text-align: center; padding: 3rem; color: var(--muted); }
.transcript-box { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.transcript-box h3 { font-size: 1rem; margin-bottom: 0.75rem; }
.insight-grid { display: grid; gap: 0.75rem; margin-bottom: 1rem; }
.insight-item { background: #0d1117; padding: 0.65rem 0.75rem; border-radius: 8px; font-size: 0.9rem; }
.insight-item ul { margin: 0.35rem 0 0 1rem; padding: 0; }
.transcript-pre { max-height: 240px; overflow: auto; font-size: 0.8rem; white-space: pre-wrap; }
details summary { cursor: pointer; color: var(--accent); margin-bottom: 0.5rem; }
.section-head { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.5rem; }
.session-block { border: 1px solid var(--border); border-radius: 10px; padding: 1rem; margin-bottom: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
@media (max-width: 900px) { .grid-3 { grid-template-columns: 1fr; } }
.mini-form { background: #0d1117; padding: 0.75rem; border-radius: 8px; }
.mini-form .btn { margin-top: 0.5rem; }
.mat-list { font-size: 0.9rem; color: var(--muted); }
.report-box { margin-top: 0.75rem; }
.pipeline { display: flex; flex-direction: column; gap: 0.65rem; }
.pipe-item { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; padding: 0.5rem 0; border-bottom: 1px solid var(--border); }
.code-area { font-family: ui-monospace, monospace; font-size: 0.85rem; }
.shot-mood { padding: 0.75rem 0; border-bottom: 1px solid var(--border); }
.mood-thumb { max-width: 200px; display: block; margin: 0.5rem 0; border-radius: 8px; }
.transcript-upload-block {
    margin: 1rem 0;
    padding: 1rem;
    border: 1px dashed var(--border);
    border-radius: 10px;
    background: rgba(59, 130, 246, 0.06);
}
.transcript-upload-block .sub-label {
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: var(--muted);
}