:root {
  --bg: #0b0e13;
  --bg2: #12161d;
  --line: #232a35;
  --fg: #e6ecf5;
  --fg2: #98a3b3;
  --accent: #4dd4ff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  overflow: hidden;
}

/* ---------- 顶栏 ---------- */
header {
  height: 58px;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 20px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #131923, #0d1117);
}
.brand { display: flex; align-items: baseline; gap: 10px; }
.brand h1 { font-size: 17px; letter-spacing: .3px; }
.brand span { font-size: 12px; color: var(--fg2); }
.tabs { display: flex; gap: 4px; margin-left: 8px; }
.tabs button {
  background: transparent; border: 1px solid var(--line); color: var(--fg2);
  padding: 6px 14px; border-radius: 999px; cursor: pointer; font-size: 13px;
}
.tabs button.on { background: #1b2431; color: var(--fg); border-color: #33475e; }
.search-wrap { position: relative; margin-left: auto; }
.search-wrap input {
  width: 240px; background: #0f141b; border: 1px solid var(--line); color: var(--fg);
  padding: 7px 12px; border-radius: 8px; outline: none; font-size: 13px;
}
.search-wrap input:focus { border-color: #3a5570; }
#searchList {
  display: none; position: absolute; top: 38px; right: 0; width: 320px; max-height: 380px;
  overflow: auto; background: #131a24; border: 1px solid var(--line); border-radius: 10px; z-index: 40;
  box-shadow: 0 12px 40px rgba(0,0,0,.5);
}
#searchList.show { display: block; }
#searchList button {
  display: flex; align-items: center; gap: 8px; width: 100%; padding: 9px 12px;
  background: transparent; border: 0; color: var(--fg); cursor: pointer; text-align: left; font-size: 13px;
}
#searchList button:hover { background: #1a2330; }
#searchList em { margin-left: auto; font-style: normal; font-size: 11px; color: var(--fg2); }
#searchList .no { padding: 12px; color: var(--fg2); font-size: 12px; }

/* ---------- 卡片 ---------- */
#cards { display: flex; gap: 10px; padding: 12px 20px; overflow: auto; border-bottom: 1px solid var(--line); }
.card {
  flex: 0 0 auto; min-width: 150px; text-align: left; cursor: pointer;
  background: linear-gradient(160deg, #151d27, #10151d);
  border: 1px solid var(--line); border-radius: 10px; padding: 9px 13px; color: var(--fg);
}
.card:hover { border-color: #3d5a78; }
.ck { font-size: 11px; color: var(--fg2); }
.cv { font-size: 18px; font-weight: 700; margin: 2px 0; color: #fff; }
.cs { font-size: 11px; color: var(--accent); }

/* ---------- 主体 ---------- */
main { display: flex; height: calc(100vh - 58px - 74px); }
.side {
  width: 220px; flex: 0 0 220px; border-right: 1px solid var(--line);
  padding: 14px; overflow: auto; background: #0d1117;
}
.side h3 { font-size: 12px; color: var(--fg2); font-weight: 600; margin: 14px 0 8px; letter-spacing: .5px; }
.side h3:first-child { margin-top: 0; }
.lg {
  display: flex; align-items: center; gap: 8px; width: 100%; padding: 6px 8px; margin-bottom: 4px;
  background: transparent; border: 1px solid transparent; border-radius: 7px;
  color: var(--fg2); cursor: pointer; font-size: 12.5px; text-align: left;
}
.lg.on { color: var(--fg); background: #151d27; border-color: var(--line); }
.lgdot { width: 9px; height: 9px; border-radius: 50%; opacity: .35; }
.lg.on .lgdot { opacity: 1; }
.lgnum { margin-left: auto; font-size: 11px; opacity: .6; }
.rl { display: inline-flex; align-items: center; gap: 6px; font-size: 11.5px; color: var(--fg2); margin: 0 10px 6px 0; }
.rl i { width: 14px; height: 2px; border-radius: 2px; display: inline-block; }
.tools { display: flex; gap: 6px; margin-top: 14px; }
.tools button {
  flex: 1; background: #151d27; border: 1px solid var(--line); color: var(--fg2);
  padding: 6px; border-radius: 7px; cursor: pointer; font-size: 12px;
}
.tools button:hover { color: var(--fg); border-color: #33475e; }

.stage { flex: 1; position: relative; min-width: 0; background:
  radial-gradient(900px 520px at 50% 42%, #141b25 0%, #0b0e13 72%); }
#graph { width: 100%; height: 100%; display: block; cursor: grab; }
.node { cursor: pointer; }
.node text { pointer-events: none; user-select: none; }
.node.dim text { opacity: .25; }
#tip {
  position: absolute; left: 14px; bottom: 12px; font-size: 12px; color: var(--accent);
  background: rgba(11,14,19,.8); padding: 4px 10px; border-radius: 6px; pointer-events: none;
}

/* ---------- 面板 ---------- */
#panel {
  width: 360px; flex: 0 0 360px; border-left: 1px solid var(--line);
  background: #0d1117; padding: 16px; overflow: auto;
}
.pnl-head { display: flex; gap: 10px; align-items: flex-start; }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; margin-top: 6px; flex: 0 0 10px; }
.pnl-title { font-size: 16px; font-weight: 700; }
.pnl-sub { font-size: 11.5px; color: var(--fg2); margin-top: 2px; }
.pnl-desc { margin: 12px 0; font-size: 13px; line-height: 1.7; color: #cdd7e4; }
.facts { margin-bottom: 12px; }
.fact { display: flex; gap: 10px; padding: 6px 0; border-bottom: 1px dashed #1d242e; font-size: 12.5px; }
.fk { color: var(--fg2); flex: 0 0 110px; }
.fv { color: var(--fg); }
.src { display: inline-block; font-size: 11.5px; color: var(--accent); text-decoration: none; margin-bottom: 14px; }
.src:hover { text-decoration: underline; }
.rel-group { margin-bottom: 12px; }
.rel-label { font-size: 11.5px; color: var(--fg2); margin-bottom: 6px; }
.rel {
  display: flex; align-items: center; gap: 8px; width: 100%; text-align: left;
  background: #121821; border: 1px solid var(--line); border-radius: 8px;
  padding: 7px 9px; margin-bottom: 5px; cursor: pointer; color: var(--fg); font-size: 12.5px;
}
.rel:hover { border-color: #3d5a78; }
.rel-rel { flex: 0 0 52px; font-size: 11px; }
.rel-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rel-cat { font-size: 10.5px; padding: 1px 6px; border-radius: 999px; }
.empty { color: var(--fg2); font-size: 12.5px; line-height: 1.8; }

/* ---------- 视图 ---------- */
.view { display: none; height: 100%; overflow: auto; }
.view.on { display: block; }
#v-graph { overflow: hidden; }
#v-graph svg { height: 100%; }

/* 时间线 */
#timeline { padding: 20px 28px; max-width: 900px; }
.tl-item { display: flex; gap: 16px; padding: 12px 0; border-left: 2px solid var(--line); position: relative; }
.tl-item::before {
  content: ''; position: absolute; left: -6px; top: 18px; width: 10px; height: 10px;
  border-radius: 50%; background: var(--accent);
}
.tl-item { padding-left: 20px; }
.tl-date { flex: 0 0 100px; font-size: 12.5px; color: var(--accent); }
.tl-t { font-size: 14.5px; font-weight: 600; cursor: pointer; }
.tl-t:hover { color: var(--accent); }
.tl-s { font-size: 12.5px; color: var(--fg2); line-height: 1.7; margin-top: 3px; }

/* 指标 */
#metrics { padding: 18px 22px; display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 14px; }
.m-card { background: linear-gradient(160deg, #141b25, #0f141c); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.m-head { font-size: 14.5px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.m-head .dot { margin-top: 0; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: #232a35; border-radius: 8px; }
::-webkit-scrollbar-track { background: transparent; }

@media (max-width: 1100px) {
  .side { width: 160px; flex-basis: 160px; }
  #panel { width: 300px; flex-basis: 300px; }
  .search-wrap input { width: 170px; }
}