:root{--bg:#EDF0FA;--surface:#fff;--sunk:#E2E6F5;--ink:#141838;--muted:#5B6188;--line:#D5DAEE;--accent:#3340E0;--hl:#FFD23F}
@media (prefers-color-scheme:dark){:root{--bg:#0C0F24;--surface:#161A38;--sunk:#1E2348;--ink:#ECEEFB;--muted:#A2A8CF;--line:#2A3062;--accent:#8C96FF}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 "Noto Sans JP",system-ui,-apple-system,"Segoe UI",sans-serif}
main{max-width:680px;margin:0 auto;padding:20px 16px 64px}a{color:var(--accent)}
.brand{font:800 20px/1 "Noto Sans JP",system-ui,sans-serif;color:var(--ink);text-decoration:none}.brand mark{background:var(--hl);color:#141838;padding:0 4px;border-radius:4px}
h1{font:800 clamp(28px,6vw,38px)/1.12 "Noto Sans JP",system-ui,sans-serif;margin:22px 0 10px;overflow-wrap:break-word}
h2{font:700 21px/1.3 "Noto Sans JP",system-ui,sans-serif;margin:28px 0 8px}
.meta{color:var(--muted);font-size:15px;display:flex;flex-wrap:wrap;gap:4px 12px;align-items:center}
.chip{font-weight:700;color:var(--ink);text-decoration:underline;text-decoration-color:var(--cat,var(--accent));text-decoration-thickness:3px;text-underline-offset:6px;text-decoration-skip-ink:none}
.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px 20px;margin:18px 0}
.answer{font-size:20px;font-weight:600;margin:0}
.bubble{background:var(--hl);color:#1D1A08;border-radius:18px;padding:14px 18px;margin:18px 0}.bubble b{display:block;font-size:13px;text-transform:uppercase;letter-spacing:.08em;opacity:.75}
.ad{margin:22px 0;border:1px solid var(--line);border-radius:12px;padding:10px 12px;min-height:120px}.ad span{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.1em;font-weight:700;color:var(--muted)}
.choices{display:flex;flex-wrap:wrap;gap:8px;padding:0;list-style:none;margin:12px 0 0}.choices li{background:var(--sunk);border-radius:999px;padding:6px 14px;font-weight:600}
.cta{display:block;text-align:center;background:var(--accent);color:#fff;text-decoration:none;font-weight:700;border-radius:14px;padding:15px 18px;margin:26px 0 8px}
@media (prefers-color-scheme:dark){.cta{color:#0C0F24}}
.src{font-size:15px;color:var(--muted);overflow-wrap:anywhere}ul.list{padding-left:20px}ul.list li{margin:6px 0}
footer{margin-top:40px;font-size:14px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px 16px}footer a{color:var(--muted)}