:root {
  --bg: #10151c; --panel: #172029; --panel-2: #1e2a35; --line: #2b3947;
  --ink: #e6edf3; --ink-dim: #8fa3b5; --accent: #4bb3fd; --warn: #f0a04b;
  --good: #58c98a;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font); }

header {
  max-width: 720px; margin: 0 auto; padding: 26px 20px 10px;
}
header .back { color: var(--ink-dim); text-decoration: none; font-size: 13px; }
header .back:hover { color: var(--accent); }
header h1 { margin: 14px 0 6px; font-size: 26px; letter-spacing: .2px; }
header .tag { color: var(--ink-dim); font-size: 14px; line-height: 1.5; margin: 0; }

#quiz { max-width: 720px; margin: 0 auto; padding: 10px 20px 140px; }

.question {
  display: flex; gap: 14px; padding: 20px 0; border-bottom: 1px solid var(--line);
}
.qnum {
  flex: none; width: 26px; height: 26px; border-radius: 50%;
  background: var(--panel-2); color: var(--ink-dim); font-family: var(--mono);
  font-size: 13px; display: flex; align-items: center; justify-content: center;
  margin-top: 2px;
}
.qbody { flex: 1; }
.qbody h2 { font-size: 16px; font-weight: 600; margin: 2px 0 12px; line-height: 1.4; }
.options { display: flex; flex-direction: column; gap: 8px; }

.opt {
  display: flex; align-items: center; gap: 11px; width: 100%; text-align: left;
  background: var(--panel); color: var(--ink); border: 1px solid var(--line);
  border-radius: 9px; padding: 12px 14px; font-size: 14px; cursor: pointer;
  font-family: var(--font); line-height: 1.35; transition: border-color .12s, background .12s;
}
.opt:hover { border-color: var(--accent); }
.opt .dot {
  flex: none; width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid var(--line); transition: border-color .12s, background .12s;
}
.opt.on { border-color: var(--accent); background: rgba(75,179,253,.10); }
.opt.on .dot { border-color: var(--accent); background: var(--accent); box-shadow: inset 0 0 0 3px var(--panel); }

#finish-bar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 10;
  background: rgba(16,21,28,.94); border-top: 1px solid var(--line);
  backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 12px 20px;
}
#finish-bar .hint { margin: 0; color: var(--ink-dim); font-size: 13px; }
#finish-bar > * { max-width: 720px; }
#finish-bar { }
#btn-finish {
  background: var(--accent); color: #06222f; border: 0; border-radius: 8px;
  padding: 11px 20px; font-weight: 700; font-size: 14px; cursor: pointer;
  font-family: var(--font);
}
#btn-finish:disabled { background: var(--panel-2); color: var(--ink-dim); cursor: not-allowed; }

.hidden { display: none; }

/* ---- result ---- */
#result {
  margin-top: 30px; padding: 22px; background: var(--panel);
  border: 1px solid var(--line); border-radius: 14px;
}
#result h2 { font-size: 20px; margin: 0 0 6px; }
#result .lead { color: var(--ink-dim); font-size: 14px; line-height: 1.5; margin: 0 0 18px; }
#result .hint { color: var(--ink-dim); font-size: 13.5px; line-height: 1.5; }

.rec-domain { margin-bottom: 18px; }
.rec-domain h3 {
  font-size: 11px; text-transform: uppercase; letter-spacing: .8px;
  color: var(--accent); margin: 0 0 8px; padding-bottom: 4px;
  border-bottom: 1px solid var(--line);
}
.rec-row { margin-bottom: 11px; }
.rec-top { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.rec-name { font-size: 13.5px; }
.rec-val { font-family: var(--mono); font-size: 12px; color: var(--accent); font-weight: 700; }
.wbar { display: flex; gap: 3px; margin: 5px 0 3px; }
.wbar .seg { flex: 1; height: 5px; border-radius: 2px; background: var(--panel-2); }
.wbar .seg.on { background: var(--accent); }
.rec-why { font-size: 11.5px; color: var(--ink-dim); font-style: italic; }

.rec-note {
  font-size: 12.5px; color: var(--warn); line-height: 1.5;
  background: rgba(240,160,75,.08); border: 1px solid rgba(240,160,75,.25);
  border-radius: 8px; padding: 9px 11px; margin: 10px 0 0;
}

.actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 22px 0 0; }
.actions button {
  border-radius: 9px; padding: 12px 18px; font-size: 14px; font-weight: 600;
  cursor: pointer; font-family: var(--font); border: 1px solid var(--line);
}
.actions .primary { background: var(--accent); color: #06222f; border-color: var(--accent); font-weight: 700; }
.actions .ghost { background: transparent; color: var(--ink-dim); }
.actions .ghost:hover { color: var(--ink); border-color: var(--accent); }
.fineprint { color: var(--ink-dim); font-size: 12px; margin: 12px 0 0; }

@media (max-width: 560px) {
  .actions button { flex: 1; }
}