:root {
  --bg: #f7f6f2;
  --surface: #ffffff;
  --surface-2: #f0eee8;
  --text: #1d1b18;
  --muted: #6b665e;
  --border: #e2ded5;
  --accent: #3b5bdb;
  --accent-soft: #e6ebfc;
  --good: #2b8a3e;
  --good-soft: #e3f4e6;
  --bad: #c92a2a;
  --bad-soft: #fde8e8;
  --warn: #b35c00;
  --warn-soft: #fff1dc;
  --code-bg: #f3f1ec;
  --shadow: 0 1px 2px rgba(20, 18, 14, .06), 0 4px 16px rgba(20, 18, 14, .05);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #141412;
    --surface: #1d1c1a;
    --surface-2: #262522;
    --text: #ecebe6;
    --muted: #a19c92;
    --border: #34322e;
    --accent: #8ea2ff;
    --accent-soft: #252c47;
    --good: #69db7c;
    --good-soft: #1d3322;
    --bad: #ff8787;
    --bad-soft: #3b2020;
    --warn: #ffb35c;
    --warn-soft: #3a2b17;
    --code-bg: #232220;
    --shadow: none;
  }
}
:root[data-theme="dark"] {
  --bg: #141412; --surface: #1d1c1a; --surface-2: #262522; --text: #ecebe6; --muted: #a19c92;
  --border: #34322e; --accent: #8ea2ff; --accent-soft: #252c47; --good: #69db7c; --good-soft: #1d3322;
  --bad: #ff8787; --bad-soft: #3b2020; --warn: #ffb35c; --warn-soft: #3a2b17; --code-bg: #232220; --shadow: none;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.6 Inter, system-ui, -apple-system, sans-serif;
}
a { color: var(--accent); }
code, .mono { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: .86em; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }

.hero { padding: 56px 0 28px; }
.eyebrow { color: var(--accent); font-weight: 600; font-size: 13px; letter-spacing: .04em; text-transform: uppercase; margin: 0 0 10px; }
.hero h1 { font-size: clamp(26px, 4.4vw, 40px); line-height: 1.15; margin: 0 0 14px; letter-spacing: -.02em; max-width: 820px; }
.lede { font-size: 17px; color: var(--muted); max-width: 760px; margin: 0 0 18px; }
.links { display: flex; gap: 10px; flex-wrap: wrap; }
.links a {
  text-decoration: none; padding: 6px 14px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); font-weight: 500; font-size: 14px;
}
.links a:hover { border-color: var(--accent); color: var(--accent); }

.how {
  display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center;
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 20px 24px; box-shadow: var(--shadow);
}
.how h2 { font-size: 16px; margin: 0 0 6px; }
.how ul { margin: 0; padding-left: 18px; color: var(--muted); }
.how li { margin: 2px 0; }
.how b { color: var(--text); font-weight: 600; }
.runbox { display: flex; flex-direction: column; gap: 10px; align-items: stretch; min-width: 220px; }
.status { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }
.status .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--warn); flex: none; }
.status.loading .dot { animation: pulse 1.2s infinite; }
.status.ready .dot { background: var(--good); }
.status.error .dot { background: var(--bad); }
@keyframes pulse { 50% { opacity: .3; } }

.btn {
  font: inherit; font-weight: 600; font-size: 14px; border-radius: 9px; padding: 9px 16px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
}
.btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover:not(:disabled) { filter: brightness(1.08); color: #fff; }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.steps { list-style: none; padding: 0; margin: 28px 0; display: flex; flex-direction: column; gap: 18px; }
.step {
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--shadow);
  overflow: hidden;
}
.step-head { display: grid; grid-template-columns: auto 1fr auto; gap: 16px; padding: 20px 24px; align-items: start; }
.num {
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; font-weight: 700;
  background: var(--surface-2); color: var(--muted); font-size: 14px;
}
.step.done .num { background: var(--good-soft); color: var(--good); }
.step.running .num { background: var(--accent-soft); color: var(--accent); }
.step h3 { margin: 3px 0 4px; font-size: 18px; letter-spacing: -.01em; }
.step .desc { margin: 0; color: var(--muted); max-width: 720px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.chip {
  font-family: "JetBrains Mono", monospace; font-size: 12px; padding: 2px 8px; border-radius: 6px;
  background: var(--code-bg); color: var(--text); text-decoration: none; border: 1px solid var(--border);
}
a.chip:hover { border-color: var(--accent); }
.chip.ai { background: var(--warn-soft); color: var(--warn); border-color: transparent; font-family: Inter, sans-serif; font-weight: 600; }
.chip.live { background: var(--good-soft); color: var(--good); border-color: transparent; font-family: Inter, sans-serif; font-weight: 600; }
.step-body { border-top: 1px solid var(--border); padding: 20px 24px; display: none; }
.step.has-output .step-body { display: block; }

.error { background: var(--bad-soft); color: var(--bad); padding: 12px; border-radius: 8px; white-space: pre-wrap; font-family: "JetBrains Mono", monospace; font-size: 12px; overflow-x: auto; }
.note { font-size: 13px; color: var(--muted); margin: 10px 0 0; }
.callout { background: var(--accent-soft); border-radius: 10px; padding: 12px 16px; margin: 0 0 16px; }
.callout.warn { background: var(--warn-soft); }
.kpi-row { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.kpi { background: var(--surface-2); border-radius: 10px; padding: 10px 14px; min-width: 140px; }
.kpi .v { font-size: 22px; font-weight: 700; }
.kpi .l { font-size: 12px; color: var(--muted); }

.case { border: 1px solid var(--border); border-radius: 12px; padding: 16px; background: var(--bg); }
.case .ctx { margin: 0 0 8px; }
.case .q { font-weight: 600; margin: 0 0 10px; }
.choices { display: flex; flex-direction: column; gap: 6px; }
.choice { display: flex; gap: 10px; align-items: center; padding: 6px 10px; border-radius: 8px; background: var(--surface); border: 1px solid var(--border); flex-wrap: wrap; }
.choice.gold { border-color: var(--good); }
.choice .letter { font-weight: 700; width: 18px; }
.choice .picks { margin-left: auto; display: flex; gap: 4px; flex-wrap: wrap; }
.pick { font-size: 11px; font-weight: 600; padding: 1px 6px; border-radius: 5px; }
.pick.ok { background: var(--good-soft); color: var(--good); }
.pick.no { background: var(--bad-soft); color: var(--bad); }

.table-wrap { overflow-x: auto; margin: 0 -4px; }
table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 12px; color: var(--muted); font-weight: 600; white-space: nowrap; }
td.num-cell, th.num-cell { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr.featured td { background: var(--accent-soft); }
.mark-ok { color: var(--good); font-weight: 700; }
.mark-no { color: var(--bad); font-weight: 700; }

.ent-block { margin-bottom: 20px; }
.ent-block h4 { margin: 0 0 8px; font-size: 15px; }
.tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag { background: var(--surface-2); border-radius: 999px; padding: 2px 10px; font-size: 13px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: 8px; }
.tile { position: relative; border-radius: 8px; overflow: hidden; background: var(--surface-2); aspect-ratio: 1; border: 2px solid transparent; }
.tile img { width: 100%; height: 100%; object-fit: cover; display: block; }
.tile .badge {
  position: absolute; left: 4px; bottom: 4px; font-size: 11px; font-weight: 700; padding: 1px 6px; border-radius: 5px;
  background: rgba(0, 0, 0, .66); color: #fff;
}
.tile .fname { position: absolute; right: 4px; top: 4px; font-size: 10px; padding: 0 5px; border-radius: 4px; background: rgba(0,0,0,.5); color: #fff; }
.tile.chosen { border-color: var(--good); }
.tile.chosen .badge { background: var(--good); }
.tile.skipped { opacity: .4; }
.trio { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; max-width: 560px; }
.trio figure { margin: 0; }
.trio img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 8px; display: block; }
.trio figcaption { font-size: 12px; color: var(--muted); text-align: center; margin-top: 4px; }
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.diff mark { background: var(--warn-soft); color: var(--warn); border-radius: 3px; padding: 0 2px; }

details { margin-top: 14px; }
summary { cursor: pointer; color: var(--muted); font-size: 13px; font-weight: 500; }
summary:hover { color: var(--accent); }
pre.console {
  background: var(--code-bg); border-radius: 8px; padding: 12px; font-size: 12px; max-height: 300px; overflow: auto;
  white-space: pre-wrap; word-break: break-word; margin: 8px 0 0; font-family: "JetBrains Mono", monospace;
}
.call { border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; margin-top: 8px; font-size: 13px; }
.call .hdr { font-weight: 600; margin-bottom: 4px; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.call .k { color: var(--muted); }
.call pre { margin: 4px 0 0; white-space: pre-wrap; word-break: break-word; font-size: 12px; background: var(--code-bg); padding: 8px; border-radius: 6px; max-height: 220px; overflow: auto; }
.tool { display: inline-block; font-family: "JetBrains Mono", monospace; font-size: 12px; background: var(--accent-soft); color: var(--accent); border-radius: 5px; padding: 1px 6px; margin: 1px 2px 1px 0; }
.icons span { display: inline-block; font-size: 11px; padding: 0 5px; border-radius: 4px; background: var(--surface-2); margin: 1px 2px 1px 0; color: var(--muted); }
.icons span.on { background: var(--accent-soft); color: var(--accent); }

.foot { color: var(--muted); font-size: 13px; padding-bottom: 40px; }

@media (max-width: 680px) {
  .hero { padding-top: 32px; }
  .how { grid-template-columns: 1fr; padding: 16px; }
  .step-head { grid-template-columns: auto 1fr; padding: 16px; }
  .step-head .btn { grid-column: 1 / -1; }
  .step-body { padding: 16px; }
  .trio { gap: 6px; }
}