:root {
  --ink: #14212b;
  --muted: #5a6b78;
  --paper: #f3efe6;
  --panel: #fffdf8;
  --line: #d5cbb8;
  --teal: #0f6a6a;
  --teal-deep: #0a4548;
  --focus: #1d4f91;
  --shadow: 0 10px 30px rgba(20, 33, 43, 0.08);
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
  --text: var(--ink);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  background:
    radial-gradient(1100px 480px at 0% -10%, rgba(15, 106, 106, 0.12), transparent 55%),
    radial-gradient(800px 360px at 100% 0%, rgba(29, 79, 145, 0.10), transparent 50%),
    linear-gradient(180deg, #e8e2d4 0%, var(--paper) 42%, #ebe6db 100%);
  font-family: var(--font-body);
}

.app {
  max-width: 1440px;
  margin: 0 auto;
  padding: 28px 20px 48px;
}

.top {
  display: grid;
  gap: 18px;
  grid-template-columns: 1.5fr 1fr;
  align-items: end;
  margin-bottom: 16px;
}

.eyebrow {
  margin: 0 0 4px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--teal);
}

h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  line-height: 1.1;
  color: var(--teal-deep);
}

.lede {
  margin: 10px 0 0;
  color: var(--muted);
  max-width: 40rem;
  font-size: 1.02rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.stat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  box-shadow: var(--shadow);
}

.stat .k {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat .v {
  display: block;
  margin-top: 4px;
  font-family: var(--font-display);
  font-size: 1.45rem;
  color: var(--teal-deep);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
}

#filter {
  flex: 1 1 260px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 12px 16px;
  font: inherit;
  background: var(--panel);
}

#filter:focus {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}

.oncotree-toolbar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.oncotree-toolbar .btn-secondary {
  font-size: 0.78rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
  color: var(--ink);
}

.oncotree-toolbar .btn-secondary:disabled { opacity: 0.45; cursor: default; }

.oncotree-zoom-group {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.oncotree-zoom-label {
  font-size: 0.78rem;
  color: var(--muted);
  min-width: 2.6rem;
  text-align: center;
}

.advanced {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 6px 10px;
  background: var(--panel);
  color: var(--muted);
  font-size: 0.85rem;
}

.advanced summary { cursor: pointer; font-weight: 600; }
.advanced[open] { padding-bottom: 10px; }

.confidence-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.confidence-wrap select {
  font: inherit;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 8px;
  background: #fff;
}

.export-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.export-links a {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fbf8f1;
  color: var(--teal-deep);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.82rem;
}

.tree-stage {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 8px;
  margin-bottom: 14px;
}

.tree-host { min-height: 280px; }

.oncotree-container {
  overflow-x: auto;
  overflow-y: auto;
  max-height: 56vh;
  border-radius: 10px;
  background: #fbfbfc;
}

.oncotree-canvas { position: relative; }

.oncotree-links {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
}

.oncotree-node {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  height: 28px;
  max-width: 300px;
  padding: 0 0.4rem;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: 6px;
  font-size: 0.82rem;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  font-family: inherit;
}

.oncotree-node:hover { background: rgba(15, 106, 106, 0.08); }
.oncotree-node.oncotree-leaf { font-weight: 600; }
.oncotree-node.oncotree-active {
  background: rgba(15, 106, 106, 0.16);
  box-shadow: inset 3px 0 0 var(--teal);
}
.oncotree-node.oncotree-match { background: rgba(196, 123, 43, 0.18); }
.oncotree-node.oncotree-super {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--teal-deep);
}
.oncotree-node.oncotree-branch .oncotree-label { font-weight: 700; }

.oncotree-dot {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid #888;
  background: #888;
}

.oncotree-dot-branch { background: transparent; }
.oncotree-label { overflow: hidden; text-overflow: ellipsis; }
.oncotree-count {
  margin-left: 0.15rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
}
.oncotree-caret { color: var(--muted); font-size: 0.7rem; }

.detail-pane {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 18px;
}

.empty h2,
.detail-head h2 {
  margin: 0;
  font-family: var(--font-display);
  color: var(--teal-deep);
}

.path, .empty p { color: var(--muted); }
.hidden { display: none !important; }

.detail-grid {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(260px, 1fr);
  gap: 14px;
  margin-top: 12px;
}

.player-col video {
  width: 100%;
  max-height: 280px;
  background: #0b1518;
  border-radius: 12px;
}

.now-playing {
  margin: 8px 0 12px;
  color: var(--muted);
  font-size: 0.9rem;
}

.pane-title {
  margin: 0 0 10px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.topic-list,
.segment-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 360px;
  overflow: auto;
}

.topic-item,
.segment-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  background: #fbf8f1;
  cursor: pointer;
  text-align: left;
  font: inherit;
  color: inherit;
  width: 100%;
}

.topic-item:hover,
.segment-item:hover,
.topic-item.active,
.segment-item.active {
  border-color: var(--teal);
  background: rgba(15, 106, 106, 0.07);
}

.title { font-weight: 700; }
.meta { margin-top: 2px; color: var(--muted); font-size: 0.85rem; }
.excerpt { margin-top: 6px; font-size: 0.88rem; color: #3c4a55; line-height: 1.4; }

.badge {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 7px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  vertical-align: middle;
}
.badge-high { background: rgba(15, 106, 106, 0.14); color: var(--teal-deep); }
.badge-medium { background: rgba(161, 98, 7, 0.14); color: #854d0e; }
.badge-low { background: rgba(185, 28, 28, 0.12); color: #9b2c2c; }

.foot {
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.85rem;
}

.limitations { white-space: pre-wrap; }

@media (max-width: 980px) {
  .top, .detail-grid { grid-template-columns: 1fr; }
}

.back{margin:0 0 10px;font-size:.9rem}
.back a{color:#0f6a6a;text-decoration:none;font-weight:600}