:root{--bg:#05070f;--bg-2:#0a0f1f;--surface:#0f1530;--surface-2:#151c3d;--surface-3:#1c2451;--border:#1f2937;--border-soft:rgba(255,255,255,.06);--border-strong:rgba(169,177,255,.22);--fg:#eef0ff;--fg-2:#aab0d4;--fg-2b:#8891b8;--fg-3:#767da8;--accent:#8a9eff;--accent-line:rgba(138,158,255,.22);--accent-soft:rgba(138,158,255,.12);--ok:#34d399;--warn:#fbbf24;--danger:#f87171;--gold:#d4a853;--c-wa:#25D366;--c-live:#ff4d4f;--c-email:#5b8cff;--font-display:"Geist",system-ui,sans-serif;--font-body:"DM Sans",system-ui,sans-serif;--r-sm:8px;--r-md:10px;--r-lg:14px;--r-xl:16px;--r-pill:999px}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:var(--font-body);font-size:14px}h1,h2,h3,h4{font-family:var(--font-display);margin:0;letter-spacing:-.01em}.hidden{display:none!important}button{font-family:inherit;cursor:pointer}.gate{position:fixed;inset:0;z-index:50;background:radial-gradient(1200px 600px at 50% 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var(--border-soft)}.q:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.q .qt{font-size:14px;font-weight:600;margin-bottom:4px;display:flex;gap:8px;align-items:baseline}.q .qtag{font-size:9px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;padding:1px 6px;border-radius:999px;background:#8a9eff24;color:var(--accent);flex:none}.q .qtag.perfil{background:#c084fc29;color:#c084fc}.opt{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--border);border-radius:var(--r-md);margin-top:8px;background:var(--bg-2)}.opt:hover{border-color:var(--accent-line)}.opt input{accent-color:var(--accent);width:16px;height:16px}.opt label{flex:1;font-size:13px;cursor:pointer}.opt.correct{border-color:var(--ok);background:#34d39914}.opt.wrong{border-color:var(--danger);background:#f8717114}.exam-result{margin-bottom:18px;padding:16px 18px;border-radius:var(--r-md);border:1px solid 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.offer-txt{font-size:13.5px;font-weight:700;color:#fff;font-family:var(--font-display);line-height:1.4}.btn-offer{display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:var(--r-md);border:none;background:var(--accent);color:#0a0f1f;font-weight:800;font-size:13.5px;font-family:var(--font-display);box-shadow:0 0 0 3px var(--accent-soft),0 8px 22px #8a9eff40}.btn-offer:hover{filter:brightness(1.1);transform:translateY(-1px)}.chat-offer{display:flex;align-items:center;justify-content:center;gap:8px;margin:0 12px 10px;padding:11px 14px;border-radius:var(--r-md);background:var(--accent);color:#0a0f1f;font-weight:800;font-size:12.5px;font-family:var(--font-display);text-align:center}.chat-offer:hover{filter:brightness(1.1)}.offer-banner,.chat-offer{animation:offer-in .5s cubic-bezier(.2,.8,.3,1) both}@keyframes offer-in{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}@media(prefers-reduced-motion:reduce){.offer-banner,.chat-offer{animation:none}}@media(max-width:640px){.wrap{padding:14px}.exam-card{flex-wrap:wrap}.exam-card .ec-action,.exam-card .ec-action .btn-exam{width:100%}.class-grid{gap:10px}.thumb-img .thumb-num{font-size:34px}.thumb-meta .tt{font-size:12px}.live-popup{padding:0;align-items:stretch}.live-sheet{max-width:100%;border-radius:0;border:none;height:100vh;max-height:100vh;height:100dvh;max-height:100dvh;padding-top:env(safe-area-inset-top)}.live-sheet .chat-input{padding-bottom:calc(11px + env(safe-area-inset-bottom))}.offer-banner{align-items:stretch}.offer-banner .btn-offer{width:100%;justify-content:center}}.exam-cta{margin-top:10px}.btn-exam-cta{width:100%;display:block;padding:12px 16px;border:none;border-radius:10px;background:var(--accent);color:#0b0f1e;font-weight:700;font-size:15px;cursor:pointer;transition:filter 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