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#f59e0b66}.btn-lifetime:disabled{opacity:.6;cursor:not-allowed;transform:none}.ielts-page{max-width:1000px;margin:0 auto}.ielts-header{text-align:center;margin-bottom:2rem}.ielts-header h1{margin-bottom:.5rem;font-size:2rem}.ielts-header p{color:var(--text-muted)}.ielts-layout{grid-template-columns:200px 1fr;gap:24px;display:grid}@media (width<=640px){.ielts-layout{grid-template-columns:1fr}}.ielts-sidebar{flex-direction:column;gap:8px;display:flex}.ielts-nav-btn{border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;text-align:start;border-radius:10px;align-items:center;gap:10px;padding:12px 16px;font-size:.9rem;transition:all .15s;display:flex}.ielts-nav-btn:hover{border-color:var(--accent);color:var(--accent)}.ielts-nav-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.ielts-content{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:24px}.ielts-section-header{border-bottom:1px solid var(--border);align-items:center;gap:16px;margin-bottom:1.5rem;padding-bottom:1rem;display:flex}.ielts-icon-lg{font-size:2.5rem}.ielts-section-header h2{margin:0 0 4px;font-size:1.4rem}.ielts-section-header p{color:var(--text-muted);margin:0;font-size:.9rem}.ielts-tip{background:var(--accent-light);border-right:4px solid var(--accent);border-radius:8px;margin:1rem 0;padding:12px 16px;font-size:.95rem}[dir=ltr] .ielts-tip{border-right:none;border-left:4px solid var(--accent)}.ielts-tips-box{background:var(--bg);border:1px solid var(--border);border-radius:10px;margin:1rem 0;padding:16px}.ielts-tips-box h4{color:var(--accent);margin:0 0 10px}.ielts-tips-box ul{margin:0;padding-right:20px}[dir=ltr] .ielts-tips-box ul{padding-left:20px;padding-right:0}.ielts-tips-box li{margin-bottom:6px;font-size:.9rem;line-height:1.5}.ielts-phrases{margin:1rem 0}.ielts-phrases h4{color:var(--accent);margin-bottom:10px}.ielts-compare{border:1px solid var(--border);border-radius:10px;margin:1rem 0;overflow:hidden}.compare-header{background:var(--accent);color:#fff;grid-template-columns:1fr 2fr 2fr;padding:10px 16px;font-size:.85rem;font-weight:600;display:grid}.compare-row{border-bottom:1px solid var(--border);grid-template-columns:1fr 2fr 2fr;padding:10px 16px;font-size:.85rem;display:grid}.compare-row:last-child{border-bottom:none}.compare-label{color:var(--accent);font-weight:600}.bands-table{border:1px solid var(--border);border-radius:10px;margin:1rem 0;overflow:hidden}.bands-header{background:var(--accent);color:#fff;grid-template-columns:80px 100px 120px 1fr;padding:10px 16px;font-size:.85rem;font-weight:600;display:grid}.band-row{border-bottom:1px solid var(--border);grid-template-columns:80px 100px 120px 1fr;align-items:center;padding:10px 16px;font-size:.85rem;display:grid}.band-num{font-size:1.3rem;font-weight:800}.band-9{background:#fef9c3}[data-theme=dark] .band-9{background:#2d2a0a}.band-8{background:#dcfce7}[data-theme=dark] .band-8{background:#0a2d15}.band-7{background:#dbeafe}[data-theme=dark] .band-7{background:#0a1a2d}.band-6{background:#f3f4f6}[data-theme=dark] .band-6{background:#1a1a1a}.band-5{background:#fce7f3}[data-theme=dark] .band-5{background:#2d0a1a}.ielts-practice{margin:1.5rem 0}.ielts-practice h4{color:var(--accent);margin-bottom:1rem}.practice-q{background:var(--bg);border:1px solid var(--border);border-radius:10px;margin-bottom:12px;padding:16px}.practice-question{margin-bottom:10px;font-weight:600}.practice-options{flex-direction:column;gap:8px;display:flex}.practice-opt{border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;text-align:start;border-radius:8px;padding:10px 16px;transition:all .15s}.practice-opt:hover{border-color:var(--accent)}.practice-opt.correct{color:#15803d;background:#dcfce7;border-color:#16a34a}.practice-opt.wrong{color:#dc2626;background:#fee2e2;border-color:#dc2626}.practice-explain{background:var(--accent-light);border-radius:8px;margin-top:10px;padding:10px;font-size:.9rem}