:root{color:#0f172a;background:#f8fafc;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{min-width:320px;margin:0}button{font:inherit;cursor:pointer}.page{min-height:100vh;padding:24px 16px;background:radial-gradient(circle at top left,rgba(56,189,248,.16),transparent 34rem),linear-gradient(180deg,#f8fafc,#eef2f7)}.shell{width:min(100%,860px);margin:0 auto}.hero{margin-bottom:24px}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border:1px solid #e2e8f0;border-radius:999px;background:#fff;box-shadow:0 8px 24px #0f172a0f;color:#334155;font-size:14px}h2,p{margin:0}.panel{margin-top:18px;border:1px solid #e2e8f0;border-radius:22px;padding:24px;background:#ffffffeb;box-shadow:0 12px 36px #0f172a12}.test-panel h2{font-size:clamp(24px,3vw,32px);line-height:1.35}.question-progress{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.badge{display:inline-flex;align-items:center;min-height:28px;border-radius:999px;padding:4px 10px;background:#e2e8f0;color:#334155;font-size:13px;font-weight:700}.question-card{border:1px solid #e2e8f0;border-radius:18px;padding:20px;background:#fff}.option-list{display:grid;gap:10px;margin-top:16px}.option-card{display:flex;align-items:flex-start;gap:12px;width:100%;border:1px solid #cbd5e1;border-radius:16px;padding:14px 16px;background:#f8fafc;color:#0f172a;text-align:left;transition:border-color .16s ease,background-color .16s ease,transform .16s ease}.option-card:hover,.option-card.selected{border-color:#0f172a;background:#eef2ff;transform:translateY(-1px)}.option-card.locked{cursor:default}.option-key{display:inline-flex;align-items:center;justify-content:center;flex:0 0 28px;height:28px;border-radius:999px;background:#0f172a;color:#fff;font-size:13px;font-weight:800}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;gap:8px;border:0;border-radius:14px;padding:10px 18px;font-weight:700;transition:transform .16s ease,background-color .16s ease,box-shadow .16s ease}.button:hover{transform:translateY(-1px)}.button-primary{background:#0f172a;color:#fff;box-shadow:0 10px 24px #0f172a2e}.button-primary:hover{background:#1e293b}.button-secondary{background:#e2e8f0;color:#0f172a}.button-secondary:hover{background:#cbd5e1}.actions{display:flex;align-items:center;justify-content:flex-start;gap:16px;margin-top:20px;flex-wrap:wrap}.score{font-size:18px;font-weight:800;color:#0f172a}.result{display:flex;align-items:flex-start;gap:12px;margin-top:18px;border-radius:16px;padding:16px}.result.success{background:#dcfce7}.result.error{background:#fee2e2}.result-icon{flex:0 0 auto;font-size:20px;font-weight:900;line-height:1}.result-title{font-weight:800}.result-text{margin-top:4px;color:#334155;font-size:15px;line-height:1.5}@media(max-width:760px){.page{padding:18px 12px}.panel{border-radius:18px;padding:18px}.actions{flex-direction:column;align-items:stretch}}