:root {
  --bg: #f7f6f2;
  --surface: #ffffff;
  --surface-2: #f0eee7;
  --ink: #17181c;
  --ink-2: #4a4d57;
  --ink-3: #7a7d88;
  --line: #e2dfd5;
  --accent: #2f4ce0;
  --accent-ink: #ffffff;
  --accent-soft: #e6eaff;
  --good: #1f8a5b;
  --good-soft: #dff3e8;
  --warn: #b7791f;
  --warn-soft: #fbefd9;
  --bad: #c2412d;
  --bad-soft: #fbe3de;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(20, 20, 30, .04), 0 6px 24px rgba(20, 20, 30, .05);
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111215; --surface: #191b20; --surface-2: #22252c; --ink: #eceef3; --ink-2: #b4b8c4; --ink-3: #868a97;
    --line: #2c3038; --accent: #7d93ff; --accent-ink: #0d1020; --accent-soft: #232a4a;
    --good: #4cc38a; --good-soft: #17312a; --warn: #e3a64a; --warn-soft: #33291a; --bad: #f07a65; --bad-soft: #3a1f1b;
    --shadow: none; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #111215; --surface: #191b20; --surface-2: #22252c; --ink: #eceef3; --ink-2: #b4b8c4; --ink-3: #868a97;
  --line: #2c3038; --accent: #7d93ff; --accent-ink: #0d1020; --accent-soft: #232a4a;
  --good: #4cc38a; --good-soft: #17312a; --warn: #e3a64a; --warn-soft: #33291a; --bad: #f07a65; --bad-soft: #3a1f1b;
  --shadow: none; color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 var(--sans); }
a { color: var(--accent); }
img, svg { max-width: 100%; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 760px; }

/* nav */
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 0; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -.01em; color: var(--ink); text-decoration: none; }
.brand-mark { width: 26px; height: 26px; border-radius: 7px; background: var(--ink); display: grid; place-items: center; }
.brand-mark span { width: 12px; height: 12px; border: 2.5px solid var(--bg); border-radius: 50%; }
.nav-links { display: flex; gap: 18px; font-size: 14px; flex-wrap: wrap; }
.nav-links a { color: var(--ink-2); text-decoration: none; }
.nav-links a:hover, .nav-links a[aria-current] { color: var(--ink); }

/* hero */
.hero { padding: 40px 0 28px; }
.eyebrow { font: 600 12px/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
h1 { font: 600 clamp(32px, 5.4vw, 56px)/1.05 var(--serif); letter-spacing: -.02em; margin: 14px 0 16px; max-width: 18ch; }
h2 { font: 600 clamp(22px, 3vw, 30px)/1.15 var(--serif); letter-spacing: -.01em; margin: 0 0 8px; }
h3 { font-size: 16px; margin: 0 0 6px; }
.lede { font-size: 18px; color: var(--ink-2); max-width: 60ch; margin: 0 0 24px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.btn { appearance: none; border: 1px solid var(--line); background: var(--surface); color: var(--ink); font: 600 15px/1 var(--sans); padding: 13px 18px; border-radius: 10px; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.btn:hover { border-color: var(--ink-3); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.06); }
.btn.small { padding: 8px 12px; font-size: 13px; }
.btn:disabled { opacity: .55; cursor: progress; }
.privacy { display: flex; gap: 8px; align-items: flex-start; font-size: 14px; color: var(--ink-2); margin-top: 16px; max-width: 62ch; }
.privacy svg { flex: none; margin-top: 2px; color: var(--good); }

.facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 34px 0 8px; }
.fact { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.fact b { display: block; font: 600 30px/1.1 var(--serif); margin-bottom: 4px; }
.fact p { margin: 0 0 8px; font-size: 14px; color: var(--ink-2); }
.fact cite { font-size: 12px; font-style: normal; color: var(--ink-3); }
.fact cite a { color: inherit; }

/* drop zone */
.drop { margin-top: 26px; border: 2px dashed var(--line); border-radius: var(--radius); padding: 26px; text-align: center; background: var(--surface); transition: border-color .15s, background .15s; }
.drop.over { border-color: var(--accent); background: var(--accent-soft); }
.drop p { margin: 6px 0 0; color: var(--ink-3); font-size: 14px; }
details.howto { margin-top: 14px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 0 18px; }
details.howto summary { cursor: pointer; padding: 14px 0; font-weight: 600; }
details.howto ol { margin: 0 0 16px; padding-left: 20px; color: var(--ink-2); }
details.howto li { margin: 4px 0; }
code, .mono { font-family: var(--mono); font-size: .9em; }
.chips-inline code { background: var(--surface-2); padding: 1px 6px; border-radius: 5px; }

/* panels */
.section { padding: 28px 0; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.panel + .panel { margin-top: 16px; }
.panel-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.muted { color: var(--ink-3); }
.small { font-size: 13px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }

/* status banner */
.notice { border-radius: 10px; padding: 12px 14px; font-size: 14px; margin: 12px 0; }
.notice.warn { background: var(--warn-soft); color: var(--ink); border: 1px solid color-mix(in srgb, var(--warn) 40%, transparent); }
.notice.info { background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); }
.notice.bad { background: var(--bad-soft); border: 1px solid color-mix(in srgb, var(--bad) 40%, transparent); }
.demo-flag { display: inline-flex; gap: 6px; align-items: center; background: var(--warn-soft); color: var(--warn); font: 600 12px/1 var(--sans); padding: 6px 10px; border-radius: 999px; letter-spacing: .02em; }

/* setup */
.setup { display: grid; grid-template-columns: 1.3fr 1fr; gap: 16px; }
.map-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.map-table td { padding: 6px 0; border-bottom: 1px solid var(--line); vertical-align: middle; }
.map-table td:first-child { color: var(--ink-2); padding-right: 10px; }
.map-table .req { color: var(--bad); }
select, input[type="date"], input[type="number"] { font: 14px var(--sans); color: var(--ink); background: var(--surface-2); border: 1px solid var(--line); border-radius: 8px; padding: 7px 8px; width: 100%; max-width: 100%; }
label.field { display: block; font-size: 13px; color: var(--ink-2); margin-bottom: 12px; }
label.field span { display: block; margin-bottom: 4px; }
.stage-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-size: 13px; border: 1px solid var(--line); background: var(--surface-2); color: var(--ink-2); border-radius: 999px; padding: 5px 10px; cursor: pointer; }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }

/* results */
.score-row { display: grid; grid-template-columns: 280px 1fr; gap: 16px; }
.score-card { text-align: center; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.gauge { position: relative; width: 190px; height: 190px; }
.gauge svg { transform: rotate(-90deg); }
.gauge .num { position: absolute; inset: 0; display: grid; place-items: center; font: 600 52px/1 var(--serif); }
.gauge .num small { display: block; font: 500 13px var(--sans); color: var(--ink-3); margin-top: 6px; text-align: center; }
.grade { margin-top: 10px; font-weight: 700; padding: 6px 12px; border-radius: 999px; font-size: 13px; }
.grade.good { background: var(--good-soft); color: var(--good); }
.grade.warn { background: var(--warn-soft); color: var(--warn); }
.grade.bad { background: var(--bad-soft); color: var(--bad); }
.kpis { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.kpi { background: var(--surface-2); border-radius: 12px; padding: 14px 16px; }
.kpi b { display: block; font: 600 26px/1.15 var(--serif); }
.kpi span { font-size: 13px; color: var(--ink-2); }

.bars { display: grid; gap: 10px; }
.bar-row { display: grid; grid-template-columns: minmax(150px, 230px) 1fr 120px; gap: 12px; align-items: center; font-size: 14px; }
.bar-track { height: 12px; background: var(--surface-2); border-radius: 999px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--bad); border-radius: 999px; }
.bar-fill.mid { background: var(--warn); }
.bar-fill.accent { background: var(--accent); }
.bar-val { text-align: right; font-variant-numeric: tabular-nums; color: var(--ink-2); }
.bar-row.off { color: var(--ink-3); }
.bar-row.off .bar-val { font-size: 12px; }

.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.data { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 560px; }
table.data th { text-align: left; font: 600 12px/1.2 var(--sans); text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); padding: 8px 10px; border-bottom: 1px solid var(--line); }
table.data td { padding: 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.data td.num, table.data th.num { text-align: right; font-variant-numeric: tabular-nums; }
.flag { display: inline-block; font-size: 11.5px; padding: 2px 8px; border-radius: 999px; background: var(--bad-soft); color: var(--bad); margin: 1px 3px 1px 0; white-space: nowrap; }
.pct-pill { font-variant-numeric: tabular-nums; font-weight: 600; }
.pct-pill.bad { color: var(--bad); } .pct-pill.warn { color: var(--warn); } .pct-pill.good { color: var(--good); }

.ai-box { white-space: normal; }
.ai-box p { margin: 0 0 10px; }
.ai-box ul { margin: 0 0 10px; padding-left: 20px; }
details.payload { margin-top: 10px; font-size: 13px; }
details.payload pre { background: var(--surface-2); padding: 12px; border-radius: 8px; overflow: auto; max-height: 280px; font: 12px/1.45 var(--mono); }

/* article (build page) */
.article h2 { margin-top: 44px; }
.article p, .article li { color: var(--ink-2); }
.article .card-list { display: grid; gap: 12px; margin: 16px 0; }
.story { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.story h3 { font-size: 15px; }
.story p { margin: 0 0 8px; }
.story ul { margin: 0; padding-left: 20px; font-size: 14px; }
.decision { border-left: 3px solid var(--accent); padding: 4px 0 4px 16px; margin: 18px 0; }
.decision h3 { margin-bottom: 4px; }
.decision p { margin: 0 0 6px; }
.tag { display: inline-block; font: 600 11px/1 var(--sans); padding: 4px 8px; border-radius: 6px; letter-spacing: .04em; text-transform: uppercase; }
.tag.yes { background: var(--good-soft); color: var(--good); }
.tag.no { background: var(--bad-soft); color: var(--bad); }
.tag.later { background: var(--warn-soft); color: var(--warn); }
table.plain { width: 100%; border-collapse: collapse; font-size: 14px; }
table.plain th, table.plain td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.plain th { color: var(--ink-3); font-size: 12px; text-transform: uppercase; letter-spacing: .06em; }
.sources li { font-size: 14px; margin-bottom: 6px; }
.toc { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; }
.toc a { font-size: 13px; text-decoration: none; background: var(--surface); border: 1px solid var(--line); padding: 6px 10px; border-radius: 999px; color: var(--ink-2); }

footer { border-top: 1px solid var(--line); margin-top: 56px; padding: 24px 0 40px; font-size: 13px; color: var(--ink-3); }
footer p { margin: 4px 0; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

@media (max-width: 860px) {
  .facts, .grid-3 { grid-template-columns: 1fr; }
  .grid-2, .setup, .score-row { grid-template-columns: 1fr; }
  .bar-row { grid-template-columns: 1fr 90px; }
  .bar-row .bar-label { grid-column: 1 / -1; }
}
@media (max-width: 480px) {
  .kpis { grid-template-columns: 1fr; }
  .nav { flex-wrap: wrap; }
  .drop { padding: 18px; }
}