:root {
  color-scheme: dark;
  --ink: #e8f0f7;
  --muted: #91a4b7;
  --panel: #111d2c;
  --panel-2: #162638;
  --line: #2a3a4d;
  --accent: #56d6c9;
  --accent-dark: #0b4d49;
  --blue: #74a9ff;
  --amber: #f1bd63;
  --unknown: #aab5c0;
  --bg: #08111c;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body { margin: 0; background: radial-gradient(circle at 78% -20%, #163752 0, transparent 38%), var(--bg); color: var(--ink); min-height: 100vh; }
button, input { font: inherit; }
a { color: inherit; }
.topbar { height: 74px; padding: 0 clamp(20px, 4vw, 64px); display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); background: rgba(8,17,28,.86); backdrop-filter: blur(16px); position: sticky; top: 0; z-index: 10; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; letter-spacing: .08em; }
.brand-mark { width: 34px; height: 34px; border: 1px solid var(--accent); color: var(--accent); display: grid; place-items: center; font-weight: 800; border-radius: 7px 1px 7px 1px; }
.brand strong { font-size: .93rem; display: block; }.brand small { display: block; color: var(--muted); letter-spacing: .04em; margin-top: 2px; }
.experiment-badge { color: var(--accent); border: 1px solid var(--accent-dark); background: rgba(21,107,100,.12); padding: 8px 11px; border-radius: 4px; font: 700 .72rem ui-monospace, monospace; letter-spacing: .05em; }
.shell { width: min(1220px, calc(100% - 40px)); margin: 0 auto; }
.intro { padding: 54px 0 34px; display: grid; grid-template-columns: 1.4fr .72fr; gap: 48px; align-items: end; }
.eyebrow { color: var(--accent); font: 700 .76rem ui-monospace, monospace; letter-spacing: .14em; margin: 0 0 14px; }
h1 { font-size: clamp(2.2rem, 4.5vw, 4.2rem); line-height: .99; letter-spacing: -.055em; margin: 0; max-width: 820px; }
.lede { color: #b5c4d2; font-size: 1.08rem; line-height: 1.65; max-width: 710px; margin: 24px 0 0; }
.boundary-card { border-left: 2px solid var(--accent); background: linear-gradient(100deg, rgba(28,67,78,.55), rgba(17,29,44,.5)); padding: 19px 20px; display: flex; gap: 13px; align-items: flex-start; }
.boundary-card p { margin: 6px 0 0; color: var(--muted); line-height: 1.5; font-size: .88rem; }.status-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); margin-top: 6px; box-shadow: 0 0 0 5px rgba(86,214,201,.11); flex: none; }
.workspace { display: grid; grid-template-columns: 290px 1fr; border: 1px solid var(--line); min-height: 560px; background: rgba(12,23,36,.82); box-shadow: 0 24px 80px rgba(0,0,0,.28); }
.progress-panel { padding: 28px; border-right: 1px solid var(--line); background: rgba(8,17,28,.56); }
.progress-copy { display: flex; justify-content: space-between; color: var(--muted); font: 700 .78rem ui-monospace, monospace; text-transform: uppercase; }.progress-track { height: 3px; background: #243548; margin: 12px 0 30px; }.progress-track span { display: block; height: 100%; background: var(--accent); transition: width .25s ease; }
.step-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }.step-list li { display: flex; align-items: center; gap: 13px; min-height: 43px; color: #778b9f; font-size: .9rem; }.step-list li span { width: 26px; height: 26px; display: grid; place-items: center; border: 1px solid #31465c; border-radius: 50%; font: 700 .72rem ui-monospace, monospace; }.step-list li.active { color: var(--ink); }.step-list li.active span { border-color: var(--accent); color: var(--accent); background: rgba(86,214,201,.08); }.step-list li.complete span { color: #07131c; background: var(--accent); border-color: var(--accent); }.step-list li.complete span { font-size: 0; }.step-list li.complete span::after { content: "✓"; font-size: .8rem; }
.privacy-note { margin-top: 34px; border-top: 1px solid var(--line); padding-top: 22px; }.privacy-note strong { color: var(--accent); font-size: .82rem; }.privacy-note p { color: var(--muted); font-size: .78rem; line-height: 1.55; }
.question-panel { padding: clamp(28px, 5vw, 64px); display: flex; }.question-panel form { display: flex; flex-direction: column; width: 100%; }fieldset { border: 0; padding: 0; margin: 0; }legend { font-size: clamp(1.55rem, 2.7vw, 2.35rem); line-height: 1.18; font-weight: 700; letter-spacing: -.03em; }.question-number { display: block; color: var(--accent); font: 600 .78rem ui-monospace, monospace; letter-spacing: .08em; margin-bottom: 10px; }.question-help { color: var(--muted); margin: 12px 0 28px; line-height: 1.5; }
.option-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }.option-card { min-height: 64px; border: 1px solid var(--line); background: #0d1927; padding: 14px 16px; display: flex; align-items: center; gap: 12px; cursor: pointer; transition: border-color .15s, background .15s, transform .15s; border-radius: 4px; }.option-card:hover { border-color: #4c647a; transform: translateY(-1px); }.option-card.selected { border-color: var(--accent); background: rgba(38,112,108,.2); }.option-card input { position: absolute; opacity: 0; }.radio-indicator { width: 18px; height: 18px; border: 1px solid #52677b; border-radius: 50%; flex: none; }.selected .radio-indicator { border: 5px solid var(--accent); background: #07131c; }
.form-actions { margin-top: auto; padding-top: 34px; display: flex; justify-content: space-between; gap: 12px; }.button { border: 1px solid transparent; min-height: 46px; padding: 0 20px; border-radius: 3px; font-weight: 750; cursor: pointer; }.button.primary { background: var(--accent); color: #06131a; min-width: 150px; }.button.primary:hover { background: #75e5da; }.button.secondary { background: transparent; color: var(--ink); border-color: var(--line); }.button:disabled { opacity: .35; cursor: not-allowed; }.validation { color: #ffb4a8; font-size: .85rem; }
.result-view { padding-top: 42px; }.result-header { display: flex; justify-content: space-between; align-items: end; gap: 20px; border-bottom: 1px solid var(--line); padding-bottom: 24px; }.result-header h2 { font-size: clamp(2rem, 4vw, 3.4rem); letter-spacing: -.04em; margin: 0; }.result-header p:not(.eyebrow) { color: var(--muted); }.signal-strip { margin: 20px 0; padding: 13px 16px; background: rgba(86,214,201,.1); border: 1px solid var(--accent-dark); display: flex; justify-content: space-between; gap: 12px; color: var(--accent); font: .8rem ui-monospace, monospace; }.regulatory-context { border: 1px solid #315581; background: rgba(35,67,104,.16); padding: 20px; }.regulatory-context li { list-style: none; }.legal-unknown { color: var(--muted); margin: 14px 0 0; }.buyer-state { display: grid; grid-template-columns: 1fr auto; gap: 5px 20px; padding: 18px 20px; margin: 12px 0 24px; border: 1px solid var(--line); }.buyer-state span { color: var(--muted); }.buyer-state strong { color: var(--accent); font: 700 .82rem ui-monospace, monospace; }.buyer-state small { grid-column: 2; color: var(--muted); text-align: right; }
.vendor-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; }.vendor-card { background: var(--panel); border: 1px solid var(--line); }.vendor-card header { padding: 22px 22px 17px; border-bottom: 1px solid var(--line); }.candidate-index { color: var(--muted); font: 700 .7rem ui-monospace, monospace; letter-spacing: .09em; }.vendor-card h3 { margin: 8px 0 4px; font-size: 1.45rem; }.vendor-card header p { margin: 0; color: var(--muted); font-size: .8rem; }.fact-list { list-style: none; margin: 0; padding: 0; }.fact-list li { padding: 17px 22px; border-bottom: 1px solid rgba(42,58,77,.72); }.fact-list li:last-child { border: 0; }.fact-list p { margin: 8px 0; color: #c3d0db; line-height: 1.52; font-size: .88rem; }.fact-list a, .regulatory-context a { color: var(--blue); font-size: .78rem; text-decoration: none; }.fact-label { display: inline-block; font: 750 .66rem ui-monospace, monospace; letter-spacing: .07em; padding: 4px 6px; border-radius: 2px; }.fact-label.regulatory { color: #9bc1ff; background: rgba(58,111,184,.2); }.fact-label.vendor { color: var(--accent); background: rgba(86,214,201,.1); }.fact-label.hypothesis { color: var(--amber); background: rgba(241,189,99,.1); }.fact-label.unknown { color: #c2cbd4; background: rgba(170,181,192,.1); }
.unknown-register, .separation-key, .commercial-independence, .source-register { margin-top: 28px; border-top: 1px solid var(--line); padding-top: 26px; }.unknown-register li { color: var(--muted); margin: 8px 0; }.key-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }.key-grid > div { background: var(--panel); border: 1px solid var(--line); padding: 16px; }.key-grid p, .commercial-independence p { color: var(--muted); font-size: .8rem; line-height: 1.6; margin-bottom: 0; }.commercial-independence { border: 1px solid var(--line); padding: 20px; background: rgba(17,29,44,.65); }.commercial-independence h3 { margin-top: 0; }.section-heading { display: flex; justify-content: space-between; align-items: baseline; }.section-heading span { color: var(--muted); font-size: .78rem; }#source-list { display: grid; }.source-register a { display: grid; grid-template-columns: 34px 150px 1fr 24px; gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--line); text-decoration: none; align-items: center; }.source-register a span { color: var(--muted); font: .72rem ui-monospace, monospace; }.source-register a small { color: var(--muted); overflow-wrap: anywhere; }.source-register a b { color: var(--blue); }
.telemetry { margin: 30px 0; border: 1px solid var(--line); padding: 14px 18px; color: var(--muted); font-size: .82rem; }.telemetry summary { cursor: pointer; color: var(--ink); font-weight: 700; }.telemetry ol { font-family: ui-monospace, monospace; line-height: 1.7; }
footer { width: min(1220px, calc(100% - 40px)); margin: 20px auto 0; padding: 24px 0 32px; border-top: 1px solid var(--line); color: var(--muted); display: flex; justify-content: space-between; gap: 20px; font-size: .75rem; }
@media (max-width: 800px) {
  .experiment-badge { display: none; }.shell { width: min(100% - 24px, 680px); }.intro { grid-template-columns: 1fr; gap: 22px; padding-top: 34px; }.workspace { grid-template-columns: 1fr; }.progress-panel { border-right: 0; border-bottom: 1px solid var(--line); padding: 18px; }.step-list { grid-template-columns: repeat(7, 1fr); gap: 4px; }.step-list li { display: block; min-height: 0; }.step-list li strong { display: none; }.step-list li span { width: 100%; border-radius: 2px; }.privacy-note { display: none; }.question-panel { min-height: 520px; padding: 25px 18px; }.option-grid, .vendor-grid, .key-grid { grid-template-columns: 1fr; }.option-card { min-height: 58px; }.result-header { align-items: flex-start; flex-direction: column; }.signal-strip { flex-direction: column; }.buyer-state { grid-template-columns: 1fr; }.buyer-state small { grid-column: 1; text-align: left; }.source-register a { grid-template-columns: 28px 1fr 22px; }.source-register a small { grid-column: 2 / 4; }.section-heading, footer { flex-direction: column; }.topbar { height: 64px; padding: 0 16px; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }