:root {
  --bg: #f6f7f8;
  --card: #ffffff;
  --ink: #1d2327;
  --muted: #5d6970;
  --line: #dde2e5;
  --brand: #174862;
  --accent: #2f8f82;
  --focus: rgba(47, 143, 130, 0.28);
  --b1: #c2553d;
  --b2: #c8902b;
  --b3: #3f8fb0;
  --b4: #2f8f72;
  --radius: 12px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12171a;
    --card: #1a2125;
    --ink: #e6ebee;
    --muted: #9aa8b0;
    --line: #2c363c;
    --brand: #9fd0e4;
    --accent: #5cc0b1;
    --focus: rgba(92, 192, 177, 0.3);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 var(--font); }
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.01em; margin: 0 0 0.5em; }
h1 { font-size: clamp(1.9rem, 4vw, 2.7rem); }
h2 { font-size: 1.45rem; margin-top: 2.2em; }
h3 { font-size: 1.1rem; margin: 0; }
p { margin: 0 0 1em; }
.wrap { max-width: 820px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.small { font-size: 0.9rem; }
.eyebrow { font-size: 0.85rem; font-weight: 600; color: var(--accent); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.4em; }
main:focus { outline: none; }

/* header */
.top { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top__inner { display: flex; align-items: center; gap: 24px; height: 60px; }
.logo { font-weight: 700; color: var(--brand); text-decoration: none; white-space: nowrap; }
.logo span { color: var(--accent); }
.progress { flex: 1; height: 6px; background: var(--line); border-radius: 99px; overflow: hidden; }
.progress__bar { height: 100%; width: 0; background: var(--accent); transition: width 0.25s ease; }

/* buttons */
.btn { font: 600 1rem var(--font); border-radius: 8px; padding: 12px 20px; cursor: pointer; border: 1px solid transparent; }
.btn--primary { background: var(--brand); color: #fff; }
@media (prefers-color-scheme: dark) { .btn--primary { color: #0f1a20; } }
.btn--primary:hover { filter: brightness(1.1); }
.btn--ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn--ghost:hover { border-color: var(--muted); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

/* intro */
.intro { padding: clamp(48px, 9vw, 96px) 0 40px; }
.lede { font-size: 1.2rem; color: var(--muted); max-width: 40em; }
.facts { list-style: none; padding: 0; margin: 28px 0 36px; display: grid; gap: 10px; }
.facts li { display: flex; gap: 14px; align-items: baseline; }
.facts b { font-size: 1.6rem; color: var(--accent); min-width: 2ch; }

/* steps */
.step { padding: 40px 0; }
.field { display: grid; gap: 8px; margin: 24px 0; border: 0; padding: 0; font-weight: 600; }
.field legend { margin-bottom: 8px; }
select { font: 1rem var(--font); padding: 10px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--ink); max-width: 360px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip input { position: absolute; opacity: 0; }
.chip span { display: inline-block; padding: 8px 14px; border: 1px solid var(--line); border-radius: 99px; background: var(--card); font-weight: 500; cursor: pointer; }
.chip input:checked + span { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, var(--card)); }
.chip input:focus-visible + span { outline: 3px solid var(--focus); }

.question { border: 0; padding: 0; margin: 32px 0; }
.question legend { font-weight: 600; font-size: 1.08rem; margin-bottom: 12px; display: flex; gap: 10px; }
.qn { flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--brand); color: var(--bg); display: grid; place-items: center; font-size: 0.85rem; margin-top: 1px; }
.options { display: grid; gap: 8px; }
.option { display: flex; gap: 12px; align-items: flex-start; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 13px 16px; cursor: pointer; }
.option:hover { border-color: var(--muted); }
.option input { margin-top: 4px; accent-color: var(--accent); }
.option:has(input:checked) { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.nav { display: flex; justify-content: space-between; margin-top: 36px; }
.hint { color: var(--b1); margin-top: 12px; }

/* results */
.results { padding: 40px 0 24px; }
.score-card { display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 28px; }
.dial { --c: var(--b3); width: 140px; height: 140px; border-radius: 50%; display: grid; place-content: center; text-align: center; background: radial-gradient(closest-side, var(--card) 78%, transparent 79%), conic-gradient(var(--c) calc(var(--v) * 1%), var(--line) 0); }
.dial.b1 { --c: var(--b1); } .dial.b2 { --c: var(--b2); } .dial.b3 { --c: var(--b3); } .dial.b4 { --c: var(--b4); }
.dial__num { font-size: 2.6rem; font-weight: 700; line-height: 1; }
.dial__of { color: var(--muted); font-size: 0.9rem; }
@media (max-width: 560px) { .score-card { grid-template-columns: 1fr; justify-items: start; } }

.bars { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.bars li { display: grid; grid-template-columns: minmax(150px, 220px) 1fr 3ch; gap: 14px; align-items: center; }
.bars__track { height: 10px; background: var(--line); border-radius: 99px; overflow: hidden; }
.bars__fill { display: block; height: 100%; border-radius: 99px; }
.bars__fill.b1 { background: var(--b1); } .bars__fill.b2 { background: var(--b2); } .bars__fill.b3 { background: var(--b3); } .bars__fill.b4 { background: var(--b4); }
.bars__val { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
@media (max-width: 560px) { .bars li { grid-template-columns: 1fr 3ch; } .bars__track { grid-column: 1 / -1; grid-row: 2; } }

.cases { padding: 0; margin: 0; list-style: none; counter-reset: c; display: grid; gap: 12px; }
.case { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px 18px 56px; position: relative; counter-increment: c; }
.case::before { content: counter(c); position: absolute; left: 18px; top: 17px; font-weight: 700; color: var(--accent); font-size: 1.2rem; }
.case__head { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; flex-wrap: wrap; margin-bottom: 6px; }
.case p { margin: 0 0 6px; color: var(--muted); }
.case .first { color: var(--ink); margin: 0; }
.blockers { color: var(--b2) !important; font-size: 0.95rem; }
.fit { font-size: 0.8rem; font-weight: 600; padding: 2px 10px; border-radius: 99px; white-space: nowrap; }
.fit--good { background: color-mix(in srgb, var(--b4) 16%, transparent); color: var(--b4); }
.fit--ok { background: color-mix(in srgb, var(--b3) 16%, transparent); color: var(--b3); }
.fit--low { background: color-mix(in srgb, var(--b2) 18%, transparent); color: var(--b2); }

.steps { padding: 0; list-style: none; display: grid; gap: 14px; }
.steps li { border-left: 3px solid var(--accent); padding: 2px 0 2px 16px; }
.steps p { margin: 4px 0 0; }

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; }

.foot { padding: 48px 20px 40px; color: var(--muted); font-size: 0.9rem; border-top: 1px solid var(--line); margin-top: 48px; }
.foot p { margin: 0 0 6px; }

@media print {
  .top, .actions, .foot, #copied { display: none; }
  body { background: #fff; color: #000; }
  .case, .score-card { break-inside: avoid; }
}