:root{--gold: #ffd24a;--gold-deep: #c8920f;--blue: #5fd0ff;--bg: #02040e;--panel: rgba(8, 12, 28, .72);--panel-border: rgba(95, 208, 255, .28);--text: #eaf2ff;--muted: #93a4c4;--good: #4ade80;--bad: #ff5d6c;--font: "Trebuchet MS", "Segoe UI", system-ui, sans-serif}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:var(--font);overflow:hidden}body{cursor:none}.no-saber body,.no-saber *{cursor:auto}#hyperspace{position:fixed;inset:0;z-index:0;display:block;background:radial-gradient(circle at center,#0a1230,#02040e 70%)}#saber{position:fixed;top:0;left:0;z-index:9999;width:0;height:0;pointer-events:none;opacity:0;transform:translate(-100px,-100px) rotate(-35deg);transform-origin:0 0;will-change:transform}.no-saber #saber{display:none}.saber-hilt{position:absolute;top:-4px;left:-6px;width:24px;height:8px;border-radius:2px;background:linear-gradient(180deg,#d7d7d7,#6b6b6b 55%,#2d2d2d);box-shadow:0 0 2px #000}.saber-blade{position:absolute;top:-2px;left:18px;width:120px;height:4px;border-radius:3px;background:linear-gradient(90deg,#bfeaff,#fff 8%,#7fd4ff 60%,#5fd0ffd9);box-shadow:0 0 8px 2px #5fd0ffe6,0 0 18px 6px #5fd0ff8c;transition:width .08s ease-out}#saber.ignite .saber-blade{width:138px;box-shadow:0 0 12px 3px #78dcff,0 0 26px 10px #5fd0ffb3}#streak-frame{position:fixed;inset:0;z-index:50;pointer-events:none;opacity:0;transition:opacity .5s ease;border:0 solid transparent;box-shadow:none}body.streak-active #streak-frame{opacity:1;border:14px solid var(--gold);border-image:linear-gradient(135deg,var(--gold-deep),var(--gold) 50%,#fff6cf 60%,var(--gold-deep)) 1;box-shadow:inset 0 0 60px 12px #ffd24a73,inset 0 0 140px 40px #ffd24a2e;animation:goldPulse 1.8s ease-in-out infinite}@keyframes goldPulse{0%,to{box-shadow:inset 0 0 50px 10px #ffd24a66,inset 0 0 120px 36px #ffd24a29}50%{box-shadow:inset 0 0 80px 18px #ffd24a99,inset 0 0 170px 54px #ffd24a42}}#app{position:relative;z-index:10;height:100%;display:flex;align-items:center;justify-content:center;padding:24px}.screen{width:min(720px,100%);text-align:center}.hidden{display:none!important}.logo{font-size:clamp(2.4rem,8vw,5rem);letter-spacing:.14em;margin:0;color:var(--gold);text-shadow:0 0 24px rgba(255,210,74,.5);font-weight:900}.subtitle{margin:0 0 18px;font-size:clamp(1.2rem,4vw,2rem);letter-spacing:.5em;color:var(--text)}.subtitle .ai{color:var(--blue);text-shadow:0 0 18px rgba(95,208,255,.7)}.tagline{color:var(--muted);max-width:520px;margin:0 auto 28px;line-height:1.6}.hint{margin-top:18px;color:var(--muted);font-size:.85rem;letter-spacing:.05em}.btn-primary{font-family:var(--font);font-weight:800;letter-spacing:.18em;font-size:1rem;color:#1a1300;background:linear-gradient(180deg,#ffe27a,var(--gold) 55%,var(--gold-deep));border:none;border-radius:999px;padding:14px 38px;cursor:none;box-shadow:0 0 24px #ffd24a73;transition:transform .12s ease,box-shadow .2s ease}.btn-primary:hover{transform:translateY(-2px) scale(1.03);box-shadow:0 0 34px #ffd24ab3}.hud{display:flex;justify-content:space-between;gap:12px;margin-bottom:14px}.hud-item{display:flex;flex-direction:column;align-items:center;flex:1;background:var(--panel);border:1px solid var(--panel-border);border-radius:10px;padding:8px 6px}.hud-label{font-size:.62rem;letter-spacing:.16em;color:var(--muted)}.hud-value{font-size:1.05rem;font-weight:800;color:var(--gold)}.progress-track{height:6px;background:#5fd0ff24;border-radius:999px;overflow:hidden;margin-bottom:20px}.progress-bar{height:100%;width:0%;background:linear-gradient(90deg,var(--blue),#b9ecff);transition:width .3s ease}.question-card{background:var(--panel);border:1px solid var(--panel-border);border-radius:16px;padding:26px 24px 30px;backdrop-filter:blur(6px);box-shadow:0 12px 40px #00000073}.question-category{margin:0 0 8px;font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--blue)}.question-text{margin:0 0 22px;font-size:clamp(1.1rem,3vw,1.5rem);line-height:1.4}.choices{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media(max-width:540px){.choices{grid-template-columns:1fr}}.choice{font-family:var(--font);font-size:.98rem;color:var(--text);background:#101832d9;border:1px solid var(--panel-border);border-radius:10px;padding:14px 16px;cursor:none;text-align:left;transition:transform .1s ease,border-color .2s ease,background .2s ease}.choice:hover:not(:disabled){border-color:var(--blue);background:#1e305ce6;transform:translateY(-1px)}.choice:disabled{cursor:none;opacity:.85}.choice.correct{border-color:var(--good);background:#226e4080;box-shadow:0 0 16px #4ade8066}.choice.wrong{border-color:var(--bad);background:#781e2a80}.feedback{min-height:1.4em;margin:18px 0 0;font-weight:700;letter-spacing:.04em}.feedback.good{color:var(--good)}.feedback.bad{color:var(--bad)}.summary-title{font-size:clamp(1.8rem,6vw,3rem);color:var(--gold);margin:0 0 10px;text-shadow:0 0 22px rgba(255,210,74,.5)}.summary-score{font-size:1.2rem;margin:0 0 6px}.summary-verdict{color:var(--muted);margin:0 0 28px;font-size:1.05rem}