:root{--bg-app:#f8f9fb;--bg-card:#fff;--bg-soft:#f1f3f5;--primary:#4c6ef5;--primary-hover:#3b5bdb;--success:#2f9e44;--danger:#e03131;--warning:#f08c00;--text-main:#212529;--text-muted:#6c757d;--radius-sm:6px;--radius-md:12px;--radius-lg:18px;--shadow-soft:0 6px 20px #0000000f;--shadow-hover:0 10px 30px #00000014;--ease:cubic-bezier(0.4,0,0.2,1)}*{box-sizing:border-box}#root{min-height:100vh}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--bg-app);color:var(--text-main);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;margin:0}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}button{font-family:inherit;outline:none}html{scroll-behavior:smooth}.navbar{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:24px}.nav-btn{align-items:center;background:#faf7fc;border:1px solid #e2d7ee;border-radius:999px;cursor:pointer;display:flex;font-size:14px;font-weight:600;gap:6px;padding:8px 16px;transition:all .2s ease}.nav-btn:hover{background:#f1eaff;transform:translateY(-2px) scale(1.05)}.nav-btn.active{background:#ede7f6;border-color:#c9b6ff}.nav-btn span{display:inline-block;transition:transform .2s ease}.nav-btn:hover span{transform:scale(1.2)}.pi-container{animation:fadeIn .5s ease;background:#faf7ff;border-radius:16px;box-shadow:0 0 25px #8c4dff26;margin:40px auto;max-width:700px;padding:20px}.pi-title{color:#6b2cff;font-size:32px;font-weight:900;margin-bottom:10px;text-align:center}.pi-desc{color:#5b4a8f;font-size:16px;margin-bottom:25px;text-align:center}.pi-box{background:#fff;border-radius:14px;box-shadow:0 4px 15px #693cdc1f;margin-bottom:20px;padding:20px;transition:.2s ease}.pi-box:hover{box-shadow:0 6px 22px 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#d3befc;border-radius:10px;color:#6b2cff;font-weight:700;margin-top:15px;padding:10px;text-align:center}.logo-wrap{display:flex;justify-content:center;margin-bottom:15px}.pi-logo{animation:fadePulse 2.8s ease-in-out infinite;cursor:pointer;filter:drop-shadow(0 0 8px rgba(130,75,255,.5));transition:.3s ease;width:80px}.pi-logo:hover{filter:drop-shadow(0 0 14px rgba(150,95,255,.9));transform:scale(1.08) rotate(3deg)}@keyframes fadePulse{0%{opacity:.75;transform:scale(1)}50%{opacity:1;transform:scale(1.07)}to{opacity:.75;transform:scale(1)}}:root{--vocab-bg:#f3f5fb;--vocab-card:#fff;--vocab-card-soft:#f8faff;--vocab-border:#dde3ef;--vocab-text:#182033;--vocab-muted:#657089;--vocab-accent:#5661f6}.vocab-page{animation:fadeIn .5s ease;background:#f3f5fb;background:var(--vocab-bg);border-radius:18px;margin:0 auto;max-width:920px;min-height:calc(100vh - 40px);padding:22px 16px 60px}.vocab-page h1{color:#182033;color:var(--vocab-text);font-size:30px;font-weight:800;margin-bottom:8px;text-align:center}.vocab-subtitle{color:#657089;color:var(--vocab-muted);margin:0 auto 24px;max-width:520px;text-align:center}.vocab-hero{display:flex;justify-content:center;margin-top:24px}.main-card{background:linear-gradient(135deg,#fff,#f6f8ff);border:1px solid #dde3ef;border:1px solid var(--vocab-border);border-radius:20px;box-shadow:0 10px 30px #1f293714;cursor:pointer;padding:28px;text-align:center;width:min(100%,580px)}.main-card h2{color:#182033;color:var(--vocab-text);margin:0}.main-card p{color:#657089;color:var(--vocab-muted);margin:8px 0 0}.vocab-menu-grid{grid-gap:16px;display:grid;gap:16px;grid-template-columns:repeat(2,1fr);margin-top:20px}.menu-card{background:#fff;background:var(--vocab-card);border:1px solid #dde3ef;border:1px solid var(--vocab-border);border-radius:18px;box-shadow:0 6px 18px #0000000a;cursor:pointer;padding:20px;text-align:left;transition:all .25s ease}.menu-card h2{color:#182033;color:var(--vocab-text);font-size:18px;margin:0 0 6px}.menu-card p{color:#657089;color:var(--vocab-muted);font-size:14px;margin:0}.menu-card:hover{box-shadow:0 12px 25px #0000000f;transform:translateY(-3px)}.vocab-back-btn{background:#fff;border:1px solid #dde3ef;border:1px solid var(--vocab-border);border-radius:10px;color:#182033;color:var(--vocab-text);cursor:pointer;margin-top:14px;padding:8px 12px}.vocab-panel{background:#fff;border:1px solid #dde3ef;border:1px solid var(--vocab-border);border-radius:16px;margin-top:18px;padding:18px}.vocab-panel-header{align-items:center;display:flex;gap:10px;justify-content:space-between;margin-bottom:12px}.vocab-panel-header h2{font-size:20px;margin:0}.vocab-search-input{border:1px solid #dde3ef;border:1px solid var(--vocab-border);border-radius:12px;font-size:15px;outline:none;padding:12px 14px;width:100%}.vocab-search-input:focus{border-color:#5661f6;border-color:var(--vocab-accent);box-shadow:0 0 0 3px #5661f626}.vocab-result-list{grid-gap:10px;display:grid;gap:10px;grid-template-columns:1fr;margin-top:14px}.vocab-result-card{background:#f8faff;background:var(--vocab-card-soft);border:1px solid #dde3ef;border:1px solid var(--vocab-border);border-radius:12px;display:flex;gap:14px;justify-content:space-between;padding:12px}.vocab-result-card p{color:#657089;color:var(--vocab-muted);font-size:14px;margin:4px 0 0}.vocab-result-card span{color:#657089;color:var(--vocab-muted);font-size:12px;white-space:nowrap}.vocab-result-actions{align-items:flex-end;display:flex;flex-direction:column;gap:8px}.vocab-save-btn{background:#fff;border:1px solid #dde3ef;border:1px solid var(--vocab-border);border-radius:8px;color:#182033;color:var(--vocab-text);cursor:pointer;font-size:12px;padding:6px 10px}.vocab-save-btn:hover{border-color:#5661f6;border-color:var(--vocab-accent)}.vocab-mark{background:#fff4a3;border-radius:4px;padding:0 2px}.vocab-empty{color:#657089;color:var(--vocab-muted);margin-top:12px}.vocab-saved-actions{margin-bottom:12px}.vocab-level-header{color:#182033;color:var(--vocab-text);font-size:18px;font-weight:700;margin-bottom:12px}.vocab-units{display:flex;flex-direction:column;gap:12px}.vocab-card{animation:slideUp .4s ease;background:#fff;background:var(--vocab-card);border:1px solid #dde3ef;border:1px solid var(--vocab-border);border-radius:20px;color:#182033;color:var(--vocab-text);font-size:15px;font-weight:600;padding:16px;transition:all .25s ease}.vocab-card:hover{background:#f8faff;background:var(--vocab-card-soft);border-color:#5661f6;border-color:var(--vocab-accent);transform:translateY(-3px)}.vocab-card.locked{background:#e5e7eb;color:#657089;color:var(--vocab-muted);opacity:.8}.vocab-progress{background:#e5e7eb;border-radius:10px;height:6px;margin:10px 0 18px}.vocab-progress-fill{background:linear-gradient(90deg,#6366f1,#a855f7);height:100%}.vocab-item-card{background:#fff;background:var(--vocab-card);border:1px solid #dde3ef;border:1px solid var(--vocab-border);border-radius:16px;padding:14px}.vocab-item-word{color:#5661f6;color:var(--vocab-accent);font-size:16px;font-weight:700}.vocab-item-meaning{color:#182033;color:var(--vocab-text);margin-top:6px}.vocab-options{align-items:center;display:flex;flex-direction:column;gap:10px}.vocab-options>*{max-width:400px;width:100%}.vocab-btn{border:none;border-radius:14px;font-weight:600;padding:12px;width:100%}.vocab-btn.primary{background:#5661f6;background:var(--vocab-accent);color:#fff}.vocab-btn.success{background:#22c55e;color:#fff}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width:768px){.vocab-page{border-radius:12px;padding:16px 12px 48px}.vocab-page h1{font-size:26px}.vocab-menu-grid{gap:12px;grid-template-columns:1fr}.main-card{padding:20px}.vocab-result-card{flex-direction:column}.vocab-result-card span{white-space:normal}.vocab-result-actions{align-items:flex-start}}.answer-option{background:var(--bg-soft);border:1px solid #00000040;border-radius:var(--radius-md);box-shadow:var(--shadow-soft);color:var(--text-main);cursor:pointer;font-size:.95rem;font-weight:600;margin:8px;min-width:140px;padding:14px 18px;transition:transform .15s var(--ease),box-shadow .15s var(--ease),background-color .15s var(--ease),border-color .15s var(--ease)}.answer-option:hover:not(.disabled){border-color:#00000073;box-shadow:var(--shadow-hover);transform:translateY(-2px)}.answer-option.selected{background:var(--primary);border-color:#00000073;color:#fff}.answer-option.correct{background:var(--success);border-color:#0000008c;color:#fff}.answer-option.wrong{background:var(--danger);border-color:#0000008c;color:#fff}.answer-option.disabled{cursor:not-allowed;opacity:.85}
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