:root {
  --bg: #0f1420;
  --panel: #1a2130;
  --panel2: #222b3d;
  --text: #e8ecf3;
  --muted: #93a0b4;
  --accent: #4f8ef7;
  --green: #34c98e;
  --red: #ef5f6f;
  --border: #2c3648;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}
header {
  padding: 28px 32px 0;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #131a29, var(--bg));
}
h1 { font-size: 26px; font-weight: 700; }
.sub { color: var(--muted); font-size: 13px; margin: 4px 0 18px; }
nav { display: flex; gap: 4px; }
.tab {
  background: none; border: none; color: var(--muted);
  font-size: 14px; font-weight: 600; padding: 10px 18px; cursor: pointer;
  border-bottom: 2px solid transparent;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
main { max-width: 1200px; margin: 0 auto; padding: 28px 32px 60px; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
h2 { font-size: 20px; margin-bottom: 16px; }
h3 { font-size: 16px; margin: 28px 0 10px; }
.hint { color: var(--muted); font-size: 12px; margin-bottom: 10px; }
.badge {
  background: var(--panel2); color: var(--accent); font-size: 12px;
  padding: 3px 10px; border-radius: 12px; vertical-align: middle; font-weight: 600;
}
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin-bottom: 10px; }
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px 18px;
}
.card .model { font-size: 14px; font-weight: 700; margin-bottom: 6px; }
.card .big { font-size: 30px; font-weight: 800; }
.card .delta { font-size: 12px; font-weight: 600; margin-left: 8px; }
.card .delta.up { color: var(--green); }
.card .delta.down { color: var(--red); }
.card .meta { color: var(--muted); font-size: 12px; margin-top: 6px; }
.chart-box {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px; height: 320px; position: relative;
}
.chart-box.tall { height: 420px; }
.controls { display: flex; gap: 20px; flex-wrap: wrap; margin-bottom: 16px; align-items: center; }
.controls label { color: var(--muted); font-size: 13px; }
select {
  background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 10px; font-size: 13px; margin-left: 6px;
}
.table-wrap { overflow-x: auto; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; }
tr:last-child td { border-bottom: none; }
td.ok { color: var(--green); }
td.bad { color: var(--red); }
td.pre { font-family: ui-monospace, monospace; font-size: 12px; max-width: 380px; overflow: hidden; text-overflow: ellipsis; }
.bench-item {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px 18px; margin-bottom: 10px;
}
.bench-q { font-size: 14px; margin-bottom: 8px; white-space: pre-wrap; }
.bench-choices { color: var(--muted); font-size: 13px; margin: 6px 0; }
.bench-choices .bench-correct { color: var(--green); font-weight: 600; }
.bench-a { color: var(--muted); font-size: 13px; margin-top: 6px; }
.bench-a b { color: var(--green); }
.bench-a code { background: var(--panel2); padding: 1px 6px; border-radius: 4px; font-size: 12px; }
.bench-code {
  background: #0b0f18; border: 1px solid var(--border); border-radius: 8px;
  padding: 12px; font-size: 12px; overflow-x: auto; white-space: pre;
  font-family: ui-monospace, monospace; color: #c9d4e3;
}
footer { color: var(--muted); font-size: 12px; text-align: center; padding: 24px; border-top: 1px solid var(--border); }
@media (max-width: 700px) { main, header { padding-left: 14px; padding-right: 14px; } }