:root{--bg: #171717;--surface: #262626;--primary: #9E7FFF;--secondary: #38bdf8;--accent: #f472b6;--text: #FFFFFF;--muted: #A3A3A3;--border: #2F2F2F;--success: #10b981;--warning: #f59e0b;--error: #ef4444;--radius: 16px;--gap: 16px;--elev: 8px;font-family:"sans-serif";color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%;background:var(--bg);margin:0}.app{min-height:100%;display:flex;flex-direction:column}.hero{position:relative;height:220px;display:flex;align-items:flex-end;padding:24px;overflow:hidden;border-bottom:1px solid rgba(255,255,255,.04)}.hero-image{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:cover;filter:blur(4px) brightness(.45) saturate(.9);transform:scale(1.05);pointer-events:none}.hero-layer{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,#9e7fff2e,#38bdf814,#f472b60a);mix-blend-mode:overlay;pointer-events:none}.hero-content{position:relative;z-index:2;color:var(--text);max-width:1100px}.hero h1{margin:0 0 6px;font-size:clamp(20px,4vw,40px);line-height:1;letter-spacing:-.02em;text-shadow:0 6px 18px rgba(0,0,0,.6)}.hero p{margin:0;color:var(--muted)}.container{width:100%;max-width:1100px;margin:24px auto;padding:0 20px;flex:1}.card{background:linear-gradient(180deg,#ffffff05,#ffffff03);border:1px solid var(--border);padding:20px;border-radius:var(--radius);box-shadow:0 6px 18px #0009;color:var(--text)}.progress{height:8px;background:#ffffff08;border-radius:999px;overflow:hidden;margin-bottom:12px}.progress-inner{height:100%;background:linear-gradient(90deg,var(--primary),var(--secondary));width:0%;transition:width .3s ease}.question-header{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px}.difficulty{color:var(--muted);font-size:13px;margin:4px 0 0}.score{color:var(--muted);font-weight:600;font-size:14px}.qtext{font-size:18px;margin:12px 0}.choices{list-style:none;padding:0;margin:0;display:grid;gap:10px;grid-template-columns:1fr}.choice{display:flex;align-items:center;gap:12px;background:linear-gradient(180deg,#ffffff03,#ffffff05);border:1px solid rgba(255,255,255,.04);padding:12px;border-radius:12px;color:var(--text);cursor:pointer;transition:transform .16s ease,box-shadow .16s ease;text-align:left}.choice:hover{transform:translateY(-4px);box-shadow:0 12px 30px #0009}.choice:active{transform:translateY(-1px)}.choice-index{width:34px;height:34px;display:inline-grid;place-items:center;border-radius:10px;background:#ffffff05;color:var(--muted);font-weight:700}.btn{padding:10px 14px;border-radius:12px;border:1px solid rgba(255,255,255,.04);background:transparent;color:var(--text);cursor:pointer}.btn.primary{background:linear-gradient(90deg,var(--primary),var(--secondary));color:#0b0b0b;font-weight:700;border:none}.btn.ghost{background:transparent;color:var(--muted);border:1px dashed rgba(255,255,255,.03)}.row{display:flex;gap:12px;margin-top:12px;align-items:center}.text-input{width:100%;padding:12px;border-radius:10px;border:1px solid rgba(255,255,255,.04);background:transparent;color:var(--text);outline:none}.text-input:focus{box-shadow:0 0 0 4px #9e7fff1f;border-color:var(--primary)}.answer{margin-top:18px}.result{padding:12px;border-radius:12px;border:1px solid rgba(255,255,255,.04);background:linear-gradient(180deg,#0003,#ffffff05)}.result.correct{border-left:4px solid var(--success)}.result.wrong{border-left:4px solid var(--error)}.result.neutral{border-left:4px solid rgba(255,255,255,.04)}.explain{color:var(--muted);margin-top:8px}.nav{display:flex;gap:12px;margin-top:16px;justify-content:space-between;align-items:center}.footer{padding:18px;text-align:center;color:var(--muted);font-size:13px;border-top:1px solid rgba(255,255,255,.03)}.result{max-width:900px;margin:0 auto}.large{font-size:26px;margin:8px 0 16px;color:var(--primary);font-weight:700}.breakdown{margin-top:18px}.qa{margin-bottom:12px}.qa.ok{border-left:4px solid var(--success);padding-left:12px}.qa.fail{border-left:4px solid var(--error);padding-left:12px}.meta{color:var(--muted);font-size:13px;margin-top:6px}.sr-only{border:0!important;clip:rect(1px,1px,1px,1px)!important;-webkit-clip-path:inset(50%)!important;clip-path:inset(50%)!important;height:1px!important;margin:-1px!important;overflow:hidden!important;padding:0!important;position:absolute!important;width:1px!important;white-space:nowrap!important}button:focus,.choice:focus,.text-input:focus{outline:none;box-shadow:0 0 0 4px #9e7fff1f;border-color:var(--primary)}@media (min-width:720px){.choices{grid-template-columns:1fr 1fr}.hero{height:280px;padding:36px}}