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#0000000a}.progress-bar{background:#e5e7eb;border-radius:99px;height:7px;overflow:hidden;margin-top:6px}.progress-fill{height:100%;border-radius:99px;transition:width .3s}.question-card{background:#fff;border-radius:18px;padding:18px;box-shadow:0 4px 18px #0000000d;margin-bottom:12px}.opt-btn{width:100%;text-align:left;background:#f8fafc;border:2.5px solid #e2e8f0;border-radius:12px;padding:12px 14px;cursor:pointer;font-size:15px;font-weight:600;display:flex;align-items:center;gap:10px;transition:all .15s;margin-bottom:8px}.opt-btn.sel,.opt-btn:hover{border-color:#54a0ff}.opt-btn.sel{background:#eff6ff;color:#1d4ed8}.opt-btn.ok{background:#f0fdf4;border-color:#16a34a;color:#15803d}.opt-btn.no{background:#fff1f2;border-color:#dc2626;color:#991b1b}.opt-key{width:28px;height:28px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-weight:800;font-size:12px;background:#e2e8f0;color:#64748b;transition:all .15s}.ok .opt-key{background:#16a34a;color:#fff}.no .opt-key{background:#dc2626;color:#fff}.sel .opt-key{background:#54a0ff;color:#fff}.hint-box{background:#fefce8;border:1.5px solid #fde047;border-radius:10px;padding:9px 13px;font-size:13px;color:#713f12;margin-top:8px}.explain-box{border-radius:13px;padding:11px 15px;margin-bottom:12px;font-size:14px;line-height:1.6}.nav-btns{display:flex;gap:8px}.nav-btn{flex:1 1;border:none;border-radius:12px;padding:13px;font-weight:800;font-size:14px;cursor:pointer;transition:all .15s}.nav-btn:disabled{opacity:.4;cursor:not-allowed}.dots{gap:4px;flex-wrap:wrap;margin-top:12px}.dot,.dots{display:flex;justify-content:center}.dot{width:26px;height:26px;border-radius:7px;border:2px solid #e2e8f0;background:#fff;cursor:pointer;font-weight:700;transition:all .15s;align-items:center}.badge,.dot{font-size:11px}.badge{display:inline-block;padding:3px 10px;border-radius:99px;font-weight:800}.badge-cb{background:#f0fdf4;color:#16a34a}.badge-nc{background:#fff1f2;color:#dc2626}.badge-tn{background:#fef3c7;color:#92400e}.badge-tl{background:#ede9fe;color:#6d28d9}.badge-m1{background:#f0fdf4;color:#16a34a}.badge-m2{background:#f0f9ff;color:#0284c7}.badge-m3{background:#fff1f2;color:#dc2626}.result-card{background:#fff;border-radius:22px;padding:24px;box-shadow:0 4px 20px #0000000d;text-align:center}.score-big{font-size:56px;font-weight:900;line-height:1}.review-item{border-radius:12px;padding:11px 14px;margin-bottom:8px;text-align:left;font-size:13px}.de-list{display:flex;flex-direction:column;gap:10px}.de-card{background:#fff;border-radius:18px;padding:18px;box-shadow:0 2px 10px #0000000a;border:2px solid #e2e8f0}.matran-grid{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}.matran-item{flex:1 1;min-width:70px;border-radius:8px;padding:7px 9px}.timer{font-weight:900;font-size:16px}.timer.warn{color:#dc2626}textarea{width:100%;min-height:110px;border-radius:10px;border:2px solid #e2e8f0;padding:10px;font-size:14px;line-height:1.7;resize:vertical;outline:none;font-family:inherit}textarea:focus{border-color:#54a0ff}.back-btn{background:none;font-size:20px;padding:4px;color:#64748b}.back-btn,.btn{border:none;cursor:pointer}.btn{border-radius:12px;padding:11px 20px;font-weight:800;font-size:14px;transition:all .15s}.btn:hover{opacity:.9;transform:translateY(-1px)}@media(max-width:480px){.grade-grid{grid-template-columns:1fr}.tab-btn{font-size:11px;padding:9px 4px}}.input-card{background:var(--white);border-radius:20px;padding:36px 32px;box-shadow:0 8px 40px rgba(26,39,68,.12);border:1px solid var(--gray2);max-width:500px;margin:0 auto}.input-card h2{font-size:22px;margin-bottom:6px;color:var(--navy)}.input-card p{color:var(--gray4);font-size:13px;margin-bottom:24px;line-height:1.6}.grade-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(80px,1fr));grid-gap:10px;gap:10px;margin-top:8px}.grade-btn{padding:12px 8px;border-radius:12px;border:2px solid var(--gray2);background:#fff;cursor:pointer;text-align:center;transition:all .18s}.grade-btn:hover{border-color:var(--amber);transform:translateY(-1px)}.grade-btn.selected{border-color:var(--amber);background:var(--amber3);font-weight:700}.grade-btn .grade-emoji{font-size:20px;display:block;margin-bottom:4px}.grade-btn .grade-label{font-size:11px;font-weight:600;color:var(--navy)}.roadmap-card{background:#fff;border-radius:14px;padding:16px 18px;border:1.5px solid var(--gray2);margin-bottom:10px;display:flex;gap:14px;align-items:flex-start;cursor:pointer;transition:all .18s}.roadmap-card:hover{border-color:var(--amber);transform:translateX(3px)}.roadmap-card.recommended{border-color:#27a869;background:var(--green-light)}.roadmap-week-badge{min-width:70px;text-align:center}.roadmap-week-badge .week-icon{font-size:24px}.roadmap-week-badge .week-label{font-size:10px;font-weight:800;color:var(--amber);text-transform:uppercase;letter-spacing:.5px;display:block;margin-top:2px}.roadmap-card.recommended .week-label{color:var(--green)}.roadmap-task{font-size:13px;color:var(--text);line-height:1.6;flex:1 1}.roadmap-badge{font-size:10px;font-weight:700;padding:2px 8px;border-radius:20px;background:var(--amber3);color:#92400e;margin-top:6px;display:inline-block}.roadmap-card.recommended .roadmap-badge{background:var(--green-light);color:var(--green)}.topic-picker{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));grid-gap:10px;gap:10px;margin-top:16px}.topic-pick-btn{padding:14px 12px;border-radius:12px;border:2px solid var(--gray2);background:#fff;cursor:pointer;text-align:left;transition:all .18s}.topic-pick-btn:hover{border-color:var(--navy);transform:translateY(-2px);box-shadow:var(--shadow-sm)}.topic-pick-btn.weak{border-color:#fecdd3;background:var(--red-light)}.topic-pick-btn.pass{border-color:#a7f3d0;background:var(--green-light)}.topic-pick-btn .t-icon{font-size:22px;margin-bottom:6px;display:block}.topic-pick-btn .t-name{font-size:13px;font-weight:600;color:var(--navy)}.topic-pick-btn .t-score{font-size:11px;margin-top:3px}.topic-pick-btn.weak .t-score{color:var(--red)}.topic-pick-btn.pass .t-score{color:var(--green)}@media(max-width:480px){.input-card{padding:24px 18px}.grade-grid{grid-template-columns:repeat(3,1fr)}}@keyframes shake{0%,to{transform:translateX(0)}20%,60%{transform:translateX(-6px)}40%,80%{transform:translateX(6px)}}.explain-btn{background:none;border:1.5px solid #e2e8f0;color:#64748b;border-radius:8px;padding:3px 10px;font-size:11px;font-weight:600;cursor:pointer;margin-top:6px;transition:all .18s}.explain-btn:hover{border-color:#6366f1;color:#6366f1;background:#eef2ff}.explain-btn.loading{color:#94a3b8;border-color:#e2e8f0;cursor:not-allowed}.explain-box{margin-top:8px;border-radius:10px;overflow:hidden;border:1.5px solid #e0e7ff;animation:fadeIn .3s ease}.explain-box .ex-why-wrong{background:#fee2e2;padding:10px 12px;border-bottom:1px solid #fecdd3}.explain-box .ex-why-right{background:#e8f8f0;padding:10px 12px;border-bottom:1px solid #a7f3d0}.explain-box .ex-steps{background:#fff;padding:10px 12px;border-bottom:1px solid #e8ecf4}.explain-box .ex-note{background:#fefce8;padding:8px 12px}.explain-box .ex-label{font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}.explain-box .ex-content{font-size:12px;line-height:1.7;color:#334155}.explain-step{display:flex;gap:8px;margin-bottom:6px;align-items:flex-start}.explain-step-num{min-width:20px;height:20px;background:#6366f1;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;flex-shrink:0;margin-top:1px}@keyframes fadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}.explain-all-btn{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;border:none;border-radius:10px;padding:10px 18px;font-size:13px;font-weight:700;cursor:pointer;width:100%;margin-top:12px;display:flex;align-items:center;justify-content:center;gap:8px}.explain-all-btn:disabled{background:#e2e8f0;color:#94a3b8;cursor:not-allowed}@keyframes slideUp{0%{opacity:0;transform:translateY(20px) translateX(-50%)}to{opacity:1;transform:translateY(0) translateX(-50%)}}#welcome-back-overlay [style*="animation:slideUp"]{animation:wbSlide .35s cubic-bezier(.34,1.56,.64,1)}@keyframes wbSlide{0%{opacity:0;transform:scale(.92) translateY(30px)}to{opacity:1;transform:scale(1) translateY(0)}}