.notebooklm-guide{--bg-color: #ffffff;--text-color: #0a0a0a;--accent-green: #10b981;--accent-blue: #3b82f6;--bg-light: #f0fdf4;--border-light: #bbf7d0;--gradient: linear-gradient(135deg, #10b981, #3b82f6);--gradient-border: linear-gradient(90deg, #10b981, #3b82f6);font-family:Noto Sans JP,sans-serif;color:var(--text-color);background-color:var(--bg-color);margin:0;padding:0;line-height:1.8;font-weight:400}.notebooklm-guide .back-link{display:inline-block;padding:16px 24px;font-size:.9rem;color:#666;transition:color .2s}.notebooklm-guide .back-link:hover{color:var(--accent-green)}.notebooklm-guide .container{max-width:900px;margin:0 auto;padding:60px 24px 120px}.notebooklm-guide h1{font-size:3rem;font-weight:900;text-align:center;margin-bottom:1rem;letter-spacing:-.05em}.notebooklm-guide .hero-desc{text-align:center;font-size:1.2rem;font-weight:700;margin-bottom:4rem;color:var(--accent-green)}.notebooklm-guide h2{font-size:1.8rem;font-weight:900;margin-top:4rem;margin-bottom:2rem;padding-bottom:.5rem;border-bottom:3px solid var(--accent-green);display:flex;align-items:baseline}.notebooklm-guide .section-num{font-size:2.5rem;margin-right:1rem;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-weight:900;line-height:1}.notebooklm-guide h3{font-size:1.4rem;font-weight:700;margin-top:2rem;margin-bottom:1rem}.notebooklm-guide h4{margin-top:0;margin-bottom:.8rem;font-size:1.1rem;font-weight:700;color:var(--text-color)}.notebooklm-guide p{margin-bottom:1.5rem}.notebooklm-guide .overview-section h2{margin-top:0}.notebooklm-guide section:first-of-type+section h2{margin-top:0}.notebooklm-guide .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-bottom:2rem}.notebooklm-guide .grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.notebooklm-guide .card{background-color:var(--bg-light);border:1px solid var(--border-light);padding:24px;border-radius:8px}.notebooklm-guide .card p{margin-bottom:0;font-size:.95rem}.notebooklm-guide .card p+p{margin-top:.5rem}.notebooklm-guide .card-muted{border-color:#e5e5e5;background-color:#fafafa}.notebooklm-guide .card-muted h4,.notebooklm-guide .card-muted ul{color:#666}.notebooklm-guide ul{list-style-type:disc;padding-left:1.5rem;margin-bottom:1.5rem}.notebooklm-guide .card ul{margin-bottom:0}.notebooklm-guide li{margin-bottom:.5rem}.notebooklm-guide table{width:100%;border-collapse:collapse;margin-bottom:1.5rem;font-size:.95rem}.notebooklm-guide th,.notebooklm-guide td{border:1px solid #e5e5e5;padding:16px;text-align:left}.notebooklm-guide th{background-color:#f9f9f9;font-weight:700;white-space:nowrap}.notebooklm-guide .table-note{font-size:.9rem;color:#666;margin-bottom:2rem}.notebooklm-guide .step-list{list-style:none;padding:0;margin:0}.notebooklm-guide .step-item{display:flex;align-items:flex-start;margin-bottom:1.5rem}.notebooklm-guide .step-num{flex-shrink:0;width:36px;height:36px;border-radius:50%;background:var(--gradient);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;margin-right:16px;margin-top:-4px}.notebooklm-guide .step-content{flex-grow:1}.notebooklm-guide .btn{display:inline-block;background-color:var(--text-color);color:#fff;padding:16px 48px;border-radius:50px;text-decoration:none;font-weight:700;font-size:1.1rem;transition:all .3s ease;text-align:center;margin-top:1rem}.notebooklm-guide .btn:hover{background:var(--gradient);box-shadow:0 4px 12px #10b9814d;transform:translateY(-2px)}.notebooklm-guide .center-btn{display:flex;justify-content:center}.notebooklm-guide .code-block{background-color:var(--bg-light);border:1px solid var(--border-light);padding:24px;border-radius:8px;font-family:monospace;white-space:pre-wrap;margin-bottom:2rem;line-height:1.6;font-size:.9rem}.notebooklm-guide .example-group{margin-bottom:3rem;padding-bottom:2rem;border-bottom:1px solid #eee}.notebooklm-guide .example-group:last-child{border-bottom:none}.notebooklm-guide .label{display:inline-block;padding:4px 12px;border-radius:4px;color:#fff;font-weight:700;font-size:.85rem;margin-bottom:8px;margin-right:8px}.notebooklm-guide .label-good{background:var(--gradient)}.notebooklm-guide .label-bad{background-color:var(--text-color)}.notebooklm-guide .compare-row{margin-bottom:1.5rem}.notebooklm-guide .risk-list{list-style:disc;padding-left:1.5rem;margin:0}.notebooklm-guide .risk-list li{margin-bottom:1rem;padding-left:.5rem}.notebooklm-guide .risk-list strong{color:var(--text-color)}.notebooklm-guide .fail-card{margin-bottom:2rem;background-color:var(--bg-light);border:1px solid var(--border-light);padding:24px;border-radius:8px}.notebooklm-guide .fail-card h4{color:var(--text-color);margin-bottom:1rem}.notebooklm-guide .fail-content{margin-left:1rem;border-left:3px solid #ddd;padding-left:1rem}.notebooklm-guide .fail-content p{margin-bottom:.5rem}.notebooklm-guide .fail-content p:last-child{margin-bottom:0}.notebooklm-guide .guide-footer{text-align:center;padding-top:2rem;margin-top:4rem;border-top:1px solid #e5e5e5}.notebooklm-guide .footer-disclaimer{font-size:.85rem;color:#666;margin-bottom:1.5rem}@media (max-width: 768px){.notebooklm-guide .container{padding:40px 20px 100px}.notebooklm-guide h1{font-size:2rem}.notebooklm-guide h2{font-size:1.5rem;flex-direction:column;align-items:flex-start}.notebooklm-guide .section-num{font-size:2rem;margin-bottom:.5rem}.notebooklm-guide table{display:block;overflow-x:auto}}