:root{--bg:#f6f8fb;--surface:#fff;--surface-2:#eef3fa;--line:#e4e9f0;--ink:#16202e;--muted:#5f6b7a;--primary:#2f6fed;--primary-soft:#e8f0ff;--lane:#f2b705;--go:#1f9d57;--stop:#e23b41;--sky:#4a9bd6;--focus:#2f6fed;--shadow:0 6px 24px rgba(24,42,74,.08);--shadow-lg:0 14px 40px rgba(24,42,74,.12);--asphalt:var(--bg);--asphalt-2:var(--surface);--radius:12px;--maxw:1080px}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:Inter,Helvetica Neue,Arial,system-ui,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.5}a{color:inherit;text-decoration:none}.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}.lane-rule{height:4px;background:repeating-linear-gradient(90deg,var(--lane) 0 40px,transparent 40px 72px);opacity:.9;border:none;margin:0}.site-header{display:flex;align-items:center;justify-content:space-between;padding:18px 0;border-bottom:1px solid 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var(--line);border-radius:18px;padding:32px;box-shadow:var(--shadow-lg)}.scenario-image{width:100%;max-height:420px;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line);margin-bottom:20px;display:block}.scenario-text{font-size:20px;font-weight:700;margin:0 0 24px}.subq{border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:14px}.subq .q{margin-bottom:12px}.tf-row{display:flex;gap:10px}.tf-btn{flex:1 1;padding:12px;border-radius:9px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;font-weight:700;transition:background .12s,border-color .12s}.tf-btn:hover{background:var(--surface-2)}.tf-btn.chosen{border-color:var(--primary);background:var(--primary-soft)}.tf-btn.correct{border-color:var(--go);background:#eafaf1;color:var(--go)}.tf-btn.wrong{border-color:var(--stop);background:#fdecec;color:var(--stop)}.explanation{margin-top:12px;font-size:14px;color:var(--muted);border-left:3px solid 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36px}.hero-stats{gap:24px}.price-card,.result-card,.scenario-card{padding:24px}}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;grid-gap:44px;gap:44px;align-items:center}.hero-scene{background:linear-gradient(180deg,#eaf2ff,#f6f8fb);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-lg);overflow:hidden;aspect-ratio:16/12}.hero-scene svg{width:100%;height:100%;display:block}.hero-car{animation:heroDrift 6s ease-in-out infinite}@keyframes heroDrift{0%,to{transform:translateX(-7px)}50%{transform:translateX(7px)}}.hero-lane rect{animation:heroDash 1.5s linear infinite}@keyframes heroDash{0%{transform:translateX(0)}to{transform:translateX(-70px)}}.hero-badge{animation:heroPop 3.2s ease-in-out infinite;transform-origin:center}@keyframes heroPop{0%,82%,to{transform:scale(1)}90%{transform:scale(1.12)}}@media (max-width:760px){.hero-grid{grid-template-columns:1fr}.hero-scene{order:-1}}