:root {
  --bg: #0b0e14;
  --bg-raise: #121722;
  --panel: #161d2c;
  --panel-edge: #232d42;
  --ink: #e8ecf4;
  --ink-dim: #93a0b8;
  --amber: #ffb300;
  --amber-deep: #cc8400;
  --green: #3ddc84;
  --red: #ff5d5d;
  --magenta: #e858a1;
  --blue: #4da3ff;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --disp: "Barlow Condensed", sans-serif;
  --body: "Barlow", sans-serif;
  --radius: 10px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--body);
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
  line-height: 1.5;
  background-image:
    radial-gradient(1200px 500px at 80% -10%, rgba(77,163,255,.07), transparent 60%),
    radial-gradient(900px 400px at 10% 110%, rgba(255,179,0,.05), transparent 60%);
}
/* fine grid like a chart */
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(147,160,184,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(147,160,184,.045) 1px, transparent 1px);
  background-size: 44px 44px;
}
#app { position: relative; z-index: 1; max-width: 680px; margin: 0 auto; padding: 0 18px 90px; }

/* ---------- top strip ---------- */
.strip {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .08em;
  color: var(--amber); background: #0d1119;
  border-bottom: 1px solid var(--panel-edge);
  padding: 8px 18px; display: flex; gap: 14px; justify-content: space-between;
  position: sticky; top: 0; z-index: 10; white-space: nowrap; overflow-x: auto;
}
.strip b { color: var(--ink); font-weight: 500; }
.strip::-webkit-scrollbar { display: none; }

/* ---------- header ---------- */
header.site { padding: 34px 0 10px; }
.logo { font-family: var(--disp); font-weight: 700; font-size: 34px; letter-spacing: .02em; text-transform: uppercase; }
.logo em { font-style: normal; color: var(--amber); }
.logo .beacon { display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: var(--green); margin-left: 8px; box-shadow: 0 0 12px var(--green); animation: blink 2.4s infinite; vertical-align: middle; }
@keyframes blink { 0%,92%,100% { opacity: 1 } 96% { opacity: .15 } }
.tagline { color: var(--ink-dim); font-size: 15px; max-width: 46ch; }

/* ---------- cards / panels ---------- */
.panel {
  background: var(--panel); border: 1px solid var(--panel-edge);
  border-radius: var(--radius); padding: 20px; margin-top: 16px;
  box-shadow: 0 8px 30px rgba(0,0,0,.35);
}
.panel h2 {
  font-family: var(--disp); text-transform: uppercase; letter-spacing: .06em;
  font-size: 20px; font-weight: 600; margin-bottom: 6px;
}
.kicker { font-family: var(--mono); font-size: 11px; letter-spacing: .18em; color: var(--amber); text-transform: uppercase; }

.catrow { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px dashed var(--panel-edge); cursor: pointer; }
.catrow:last-child { border-bottom: 0; }
.catrow:hover .catname { color: var(--amber); }
.catname { font-weight: 600; flex: 1; transition: color .15s; }
.catmeta { font-family: var(--mono); font-size: 11.5px; color: var(--ink-dim); }
.bar { height: 5px; background: #0d1119; border-radius: 3px; overflow: hidden; margin-top: 5px; }
.bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--amber-deep), var(--amber)); border-radius: 3px; transition: width .6s cubic-bezier(.2,.8,.2,1); }
.bar.green i { background: linear-gradient(90deg, #1d9e5b, var(--green)); }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; font-family: var(--disp); text-transform: uppercase; letter-spacing: .08em;
  font-size: 17px; font-weight: 600; padding: 13px 22px; border-radius: 8px;
  border: 1px solid var(--panel-edge); background: var(--bg-raise); color: var(--ink);
  cursor: pointer; transition: transform .12s, box-shadow .12s, background .12s;
  width: 100%; text-align: center; margin-top: 10px;
}
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--amber); border-color: var(--amber); color: #14100a; box-shadow: 0 6px 22px rgba(255,179,0,.25); }
.btn.primary:hover { background: #ffc233; }
.btn.ghost:hover { border-color: var(--amber); color: var(--amber); }
.btn.small { width: auto; font-size: 14px; padding: 8px 14px; margin: 0; }
.btnrow { display: flex; gap: 10px; }
.btnrow .btn { margin-top: 10px; }

/* ---------- quiz ---------- */
.q-count { font-family: var(--mono); font-size: 12px; color: var(--ink-dim); letter-spacing: .1em; }
.q-text { font-size: 19px; font-weight: 600; margin: 12px 0 18px; line-height: 1.45; }
.opt {
  display: flex; gap: 12px; align-items: flex-start; width: 100%; text-align: left;
  background: var(--bg-raise); border: 1px solid var(--panel-edge); border-radius: 8px;
  padding: 13px 14px; margin-bottom: 10px; color: var(--ink); font-family: var(--body);
  font-size: 15.5px; cursor: pointer; transition: border-color .12s, background .12s; line-height: 1.4;
}
.opt:hover { border-color: var(--blue); }
.opt .key {
  font-family: var(--mono); font-size: 12px; color: var(--ink-dim);
  border: 1px solid var(--panel-edge); border-radius: 4px; padding: 1px 7px; margin-top: 1px; flex-shrink: 0;
}
.opt.correct { border-color: var(--green); background: rgba(61,220,132,.09); }
.opt.correct .key { color: var(--green); border-color: var(--green); }
.opt.wrong { border-color: var(--red); background: rgba(255,93,93,.09); }
.opt.wrong .key { color: var(--red); border-color: var(--red); }
.opt.picked { border-color: var(--amber); background: rgba(255,179,0,.08); }
.opt:disabled { cursor: default; opacity: .95; }
.explain {
  border-left: 3px solid var(--amber); background: rgba(255,179,0,.06);
  padding: 12px 14px; border-radius: 0 8px 8px 0; font-size: 14.5px; color: #d6dcea; margin: 6px 0 14px;
  animation: rise .25s ease;
}
.explain b { color: var(--amber); font-family: var(--mono); font-size: 11px; letter-spacing: .15em; display: block; margin-bottom: 4px; }
@keyframes rise { from { opacity: 0; transform: translateY(6px) } to { opacity: 1 } }

/* ---------- results ---------- */
.score-big { font-family: var(--disp); font-size: 74px; font-weight: 700; line-height: 1; }
.score-big.pass { color: var(--green); text-shadow: 0 0 34px rgba(61,220,132,.35); }
.score-big.fail { color: var(--red); }
.verdict { font-family: var(--mono); letter-spacing: .2em; font-size: 13px; text-transform: uppercase; margin-top: 4px; }
.rescat { margin-top: 14px; }
.rescat .lbl { display: flex; justify-content: space-between; font-size: 13.5px; color: var(--ink-dim); margin-bottom: 3px; }

/* ---------- paywall ---------- */
.lock { text-align: center; padding: 30px 20px; }
.lock .padlock { font-size: 40px; }
.price { font-family: var(--disp); font-size: 56px; font-weight: 700; color: var(--amber); }
.price small { font-size: 20px; color: var(--ink-dim); font-weight: 400; }
.feat { text-align: left; margin: 14px auto 4px; max-width: 340px; font-size: 15px; }
.feat li { list-style: none; padding: 6px 0 6px 26px; position: relative; }
.feat li::before { content: "✓"; position: absolute; left: 2px; color: var(--green); font-weight: 700; }

/* ---------- misc ---------- */
.back { background: none; border: 0; color: var(--ink-dim); font-family: var(--mono); font-size: 12px; letter-spacing: .12em; cursor: pointer; padding: 14px 0 2px; }
.back:hover { color: var(--amber); }
.timer { font-family: var(--mono); color: var(--green); }
.timer.low { color: var(--red); animation: blink 1s infinite; }
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--panel); border: 1px solid var(--amber); color: var(--ink);
  padding: 12px 20px; border-radius: 8px; font-size: 14px; z-index: 50; animation: rise .3s ease;
}
.faq { margin-top: 26px; }
.faq h3 { font-family: var(--disp); font-size: 17px; text-transform: uppercase; letter-spacing: .05em; margin: 16px 0 4px; color: var(--ink); }
.faq p { font-size: 14.5px; color: var(--ink-dim); }
footer { margin-top: 44px; font-family: var(--mono); font-size: 11px; color: #5b6778; line-height: 1.8; }
footer a { color: var(--ink-dim); }
@media (min-width: 560px) { .q-text { font-size: 21px; } }