:root {
  color-scheme: light;
  --bg: #f6f6f4;
  --surface: #fcfcfb;
  --surface-2: #efefec;
  --border: #dcdbd6;
  --text: #0b0b0b;
  --text-2: #52514e;
  --muted: #6b6a66;
  --accent: #2a78d6;
  --series-1: #2a78d6;
  --good: #0ca30c;
  --good-ink: #0a7a0a;
  --bad: #d03b3b;
  --bad-ink: #b42f2f;
  --add-bg: #e6f4e6;
  --del-bg: #fbe7e7;
  --hunk: #6b6a66;
  --grid: #e4e3de;
  --focus: #2a78d6;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #121211;
    --surface: #1a1a19;
    --surface-2: #232321;
    --border: #34332f;
    --text: #ffffff;
    --text-2: #c3c2b7;
    --muted: #9c9b93;
    --accent: #3987e5;
    --series-1: #3987e5;
    --good-ink: #4cc94c;
    --bad-ink: #ef7a7a;
    --add-bg: #173217;
    --del-bg: #3a1a1a;
    --hunk: #9c9b93;
    --grid: #2c2c29;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121211; --surface: #1a1a19; --surface-2: #232321; --border: #34332f; --text: #ffffff;
  --text-2: #c3c2b7; --muted: #9c9b93; --accent: #3987e5; --series-1: #3987e5; --good-ink: #4cc94c;
  --bad-ink: #ef7a7a; --add-bg: #173217; --del-bg: #3a1a1a; --hunk: #9c9b93; --grid: #2c2c29;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; overflow-x: hidden; background: var(--bg); color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
a { color: var(--accent); }
code, .mono, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.86em; }
.small { font-size: 0.85rem; }
.muted { color: var(--muted); }
h1 { margin: 0 0 4px; font-size: 1.6rem; }
h2 { margin: 28px 0 8px; font-size: 1.25rem; }
h3 { margin: 0 0 8px; font-size: 1rem; }

.top { background: var(--surface); border-bottom: 1px solid var(--border); padding: 20px 0 14px; }
.pitch { margin: 0 0 10px; color: var(--text-2); max-width: 760px; }
.links { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; }
.cmd { display: flex; gap: 6px; align-items: center; min-width: 0; flex: 0 1 auto; max-width: 100%; }
.cmd code { background: var(--surface-2); padding: 3px 6px; border-radius: 4px; overflow-x: auto; white-space: nowrap;
  display: block; min-width: 0; flex: 1 1 auto; }

button, select, input { font: inherit; color: inherit; }
button, select {
  background: var(--surface); border: 1px solid var(--border); border-radius: 6px; padding: 4px 10px; cursor: pointer;
}
button:hover { background: var(--surface-2); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; min-width: 64px; }
button.ghost { padding: 2px 8px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; margin: 12px 0; }
.table-scroll { overflow-x: auto; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
th, td { padding: 6px 10px; text-align: left; border-bottom: 1px solid var(--grid); white-space: nowrap; }
th { color: var(--text-2); font-weight: 600; background: var(--surface-2); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr:last-child td { border-bottom: 0; }
.bar { display: inline-block; height: 6px; border-radius: 3px; background: var(--series-1); vertical-align: middle;
  margin-right: 6px; }
.tag { display: inline-block; font-size: 0.75rem; padding: 0 6px; border-radius: 10px; border: 1px solid var(--border);
  color: var(--text-2); }

.pickers { display: flex; flex-wrap: wrap; gap: 10px 18px; }
.pickers label { display: flex; gap: 6px; align-items: center; min-width: 0; max-width: 100%; }
.pickers select { max-width: calc(100vw - 90px); }
.run-meta { margin: 10px 0 0; color: var(--text-2); }
.run-meta b { color: var(--text); }
.note { font-size: 0.85rem; color: var(--muted); margin-top: 4px; }

.controls { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.controls input[type=range] { flex: 1 1 160px; min-width: 120px; accent-color: var(--accent); }
.curve { margin: 10px 0 0; position: relative; }
.curve svg { display: block; width: 100%; height: auto; }
.legend { margin-left: 10px; }
.tri.up { color: var(--good-ink); }
.tri.down { color: var(--bad-ink); }
.tip { position: absolute; pointer-events: none; background: var(--surface); border: 1px solid var(--border);
  border-radius: 6px; padding: 4px 8px; font-size: 0.8rem; box-shadow: 0 2px 8px rgba(0,0,0,.15); max-width: 260px; }

.grid2 { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 0 16px; }
@media (max-width: 860px) { .grid2 { grid-template-columns: minmax(0, 1fr); } }

.timeline { list-style: none; margin: 0; padding: 0; max-height: 420px; overflow-y: auto; }
.timeline li { display: flex; gap: 8px; align-items: baseline; padding: 3px 6px; border-radius: 4px; cursor: pointer;
  font-size: 0.85rem; }
.timeline li:hover { background: var(--surface-2); }
.timeline li.cur { background: var(--surface-2); outline: 1px solid var(--accent); }
.timeline li.future { opacity: 0.55; }
.timeline .idx { color: var(--muted); min-width: 2.2em; text-align: right; font-variant-numeric: tabular-nums; }
.timeline .kind { min-width: 5.6em; color: var(--text-2); }
.timeline .what { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.timeline .dr { font-variant-numeric: tabular-nums; }
.up { color: var(--good-ink); }
.down { color: var(--bad-ink); }

.step-head { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: baseline; margin-bottom: 6px; }
.step-head .tool { font-weight: 600; }
pre { background: var(--surface-2); border-radius: 6px; padding: 8px 10px; margin: 6px 0; overflow: auto;
  max-height: 360px; white-space: pre; }
pre.wrap-text { white-space: pre-wrap; word-break: break-word; }
.diff .add { background: var(--add-bg); display: block; }
.diff .del { background: var(--del-bg); display: block; }
.diff .hunk { color: var(--hunk); display: block; }
.think { white-space: pre-wrap; font-style: italic; color: var(--text-2); margin: 0; }

.check-group { margin: 10px 0; }
.check-group > summary { cursor: pointer; font-weight: 600; text-transform: capitalize; }
.req { margin: 6px 0 4px 4px; }
.req-title { font-size: 0.85rem; color: var(--text-2); margin: 6px 0 2px; }
.checks-list { list-style: none; margin: 0; padding: 0 0 0 4px; }
.checks-list li { display: flex; gap: 6px; font-size: 0.84rem; padding: 1px 0; }
.checks-list .mark { width: 1.1em; flex: none; font-weight: 700; }
.checks-list .pass .mark { color: var(--good-ink); }
.checks-list .fail .mark { color: var(--bad-ink); }
.checks-list .unk .mark { color: var(--muted); }
.checks-list li.changed { background: var(--surface-2); border-radius: 3px; }
.checks-list .lbl { min-width: 0; overflow-wrap: anywhere; }
.checks-list .nt { color: var(--muted); font-size: 0.78rem; }
.count { font-weight: 400; color: var(--muted); font-size: 0.85rem; text-transform: none; }

.md h1, .md h2, .md h3 { font-size: 1rem; margin: 10px 0 4px; }
.md ul { padding-left: 20px; margin: 4px 0; }
.md p { margin: 6px 0; }
footer { padding: 24px 16px 32px; }