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.15s}.password-btn:hover{background:#e5e5e5}.password-btn:active{opacity:.85}.telegram-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:8000;background:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:20px;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.telegram-card{width:100%;max-width:380px;background:var(--surface);border:1px solid var(--border-light);border-radius:var(--radius);padding:32px 28px;text-align:center;animation:slideUp .3s ease}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.telegram-icon{width:64px;height:64px;border-radius:50%;background:var(--surface-3);border:1px solid var(--border-light);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:2rem}.telegram-title{font-size:1.1rem;font-weight:700;margin-bottom:8px}.telegram-desc{font-size:.85rem;color:var(--text-secondary);margin-bottom:24px;line-height:1.5}.telegram-btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:14px;background:var(--text);color:var(--inverse);border:none;border-radius:var(--radius-sm);font-weight:700;font-size:.9rem;cursor:pointer;transition:background .15s;text-decoration:none}.telegram-btn:hover{background:#e5e5e5}.telegram-close{width:100%;margin-top:10px;padding:12px;background:transparent;color:var(--text-secondary);border:1px solid var(--border);border-radius:var(--radius-sm);font-weight:600;font-size:.85rem;cursor:pointer;transition:background .15s}.telegram-close:hover{background:var(--accent-soft)}@media (min-width: 640px){.app-header{padding:14px 24px 12px}.app-main{padding:20px 24px 32px}.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.series-hero-banner{height:160px}.series-hero-banner-fallback{height:120px}.series-card-cover{height:150px}.exam-question{margin:20px 24px;font-size:.95rem}.exam-options{padding:0 24px}.exam-palette{padding:0 24px 4px}.exam-palette-label{padding-left:24px;padding-right:24px}.exam-footer{padding:16px 24px}}@media (min-width: 1024px){.app-shell{max-width:1200px;margin:0 auto;border-left:1px solid var(--border);border-right:1px solid var(--border)}.app-header{padding:16px 32px 14px}.header-row{max-width:100%}.search-box{max-width:480px}.app-main{padding:24px 32px 40px}.card-grid{grid-template-columns:repeat(3,1fr);gap:16px}.card-grid.grid-2{grid-template-columns:repeat(2,1fr)}.series-hero{display:flex;flex-direction:row;align-items:stretch}.series-hero-banner,.series-hero-banner-fallback{width:280px;height:auto;min-height:120px;flex-shrink:0}.series-hero-body{flex:1;padding:20px 24px}.series-hero-title{font-size:1.05rem}.exam-screen{max-width:960px;left:50%;transform:translate(-50%);border-left:1px solid var(--border);border-right:1px solid var(--border)}.result-grid{grid-template-columns:repeat(3,1fr)}.mock-card-actions{grid-template-columns:1fr 1fr}.exam-palette-panel{max-width:960px}}@media (min-width: 1280px){.app-shell{max-width:1280px}.card-grid{gap:18px}.exam-screen{max-width:1100px}}