*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}ul,ol{list-style:none;margin:0;padding:0}img,picture,video,canvas,svg{display:block;max-width:100%}input,button,textarea,select{font:inherit}button{border:none;background:none;cursor:pointer}a{text-decoration:none;color:inherit}:root{--primary: #2563eb;--primary-dark: #1d4ed8;--bg: #f8fafc;--surface: #ffffff;--text: #1e293b;--text-muted: #64748b;--border: #e2e8f0;--amazon-orange: #ff9900;--amazon-hover: #e68a00}body{font-family:Noto Sans JP,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-width:320px}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:960px;margin:0 auto;padding:0 16px}.header{background:var(--surface);border-bottom:1px solid var(--border);padding:12px 0;position:sticky;top:0;z-index:100}.l-header__inner{padding:12px 0;display:flex;flex-direction:column;align-items:flex-start;gap:.5rem}@media(max-width:767px){.l-header__inner{padding:8px 0}}.site-title{font-size:1.5rem;font-weight:700;color:var(--text);display:block}@media(max-width:767px){.site-title{font-size:1.25rem}}.site-title:hover{text-decoration:none;color:var(--primary)}.p-header__title--sub{font-size:.75rem;word-break:break-word;overflow-wrap:break-word}.nav{display:flex;gap:20px}.nav a{color:var(--text-muted);font-size:.9rem;font-weight:500}.nav a:hover{color:var(--primary);text-decoration:none}.main{padding:24px 16px 48px}.summary-stats{display:flex;gap:16px;margin-bottom:16px;font-size:.9rem;color:var(--text-muted)}.summary-stats strong{color:var(--text)}.subtitle{color:var(--text-muted);margin-bottom:24px;font-size:.9rem}.search-form{display:flex;gap:8px;margin-bottom:16px;align-items:center}.search-input{flex:1;max-width:400px;padding:10px 14px;border:1px solid var(--border);border-radius:6px;font-size:.9rem;font-family:inherit}.search-input:focus{outline:none;border-color:var(--primary)}.search-btn{padding:10px 20px;background:var(--primary);color:#fff;border:none;border-radius:6px;font-size:.9rem;font-family:inherit;cursor:pointer;transition:background .2s}.search-btn:hover{background:var(--primary-dark)}.search-clear{padding:8px 12px;background:transparent;border:1px solid var(--border);border-radius:6px;cursor:pointer;font-size:.9rem;color:var(--text-muted)}.search-clear:hover{background:var(--bg)}.search-result{margin-bottom:16px;color:var(--text-muted);font-size:.9rem}.filter-row{display:flex;flex-direction:column;margin-bottom:24px;gap:16px}.filter-group{display:flex;flex-direction:column;gap:6px}.filter-label{font-size:.8rem;font-weight:600;color:#666}.sort-tabs{display:flex;gap:8px;flex-wrap:wrap}.sort-tab{padding:8px 16px;border:1px solid var(--border);background:var(--surface);border-radius:6px;cursor:pointer;font-size:.85rem;font-family:inherit;color:var(--text-muted);transition:all .2s}.sort-tab:hover{border-color:var(--primary);color:var(--primary)}.sort-tab.active{background:var(--primary);border-color:var(--primary);color:#fff}.filter-selects{display:flex;align-items:center;gap:8px;flex-wrap:wrap}@media(max-width:600px){.filter-selects{flex-direction:column;align-items:stretch}.filter-select{max-width:100%;width:100%}}.filter-select{padding:8px 32px 8px 16px;border:1px solid var(--border);background:var(--surface);border-radius:6px;font-size:.85rem;font-family:inherit;color:var(--text-muted);cursor:pointer;max-width:200px;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M3 4.5L6 7.5L9 4.5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;transition:all .2s}.filter-select:hover{border-color:var(--primary);color:var(--primary)}.filter-select:focus{outline:none;border-color:var(--primary)}.filter-result{display:flex;align-items:center;gap:12px;margin:-16px 0 16px;font-size:.9rem;color:var(--text-muted)}.filter-clear{padding:5px 14px;background:#ef4444;border:none;border-radius:4px;font-size:.8rem;font-family:inherit;font-weight:600;color:#fff;cursor:pointer;transition:background .2s}.filter-clear:hover{background:#dc2626}.ranking-list{display:flex;flex-direction:column;gap:8px}.ranking-card{display:flex;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:12px 16px;transition:box-shadow .2s}.ranking-card:hover{box-shadow:0 2px 8px #00000014}.ranking-card:nth-child(1) .rank{color:#fbbf24;font-size:1.4rem}.ranking-card:nth-child(2) .rank{color:#94a3b8;font-size:1.3rem}.ranking-card:nth-child(3) .rank{color:#d97706;font-size:1.3rem}.rank{font-size:1.2rem;font-weight:700;color:var(--text-muted);min-width:36px;text-align:center}.book-cover{width:180px;height:270px;object-fit:cover;border-radius:4px;flex-shrink:0;box-shadow:0 2px 4px #0000001a}.book-info{flex:1;min-width:0}.book-title{font-weight:600;font-size:.95rem;color:var(--text);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.book-title:hover{color:var(--primary);text-decoration:none}.book-author{font-size:.8rem;color:var(--text-muted);display:block;margin-top:6px}.book-publisher,.book-pubdate,.book-category{font-size:.75rem;color:var(--text-muted);display:block;margin-top:4px}.book-stats{display:flex;gap:12px;margin-top:8px;font-size:.75rem;color:var(--text-muted)}.book-stats .stat-value{font-weight:600;color:var(--text)}.amazon-btn{display:inline-block;padding:6px 14px;background:var(--amazon-orange);color:#fff;border-radius:4px;font-size:.8rem;font-weight:600;white-space:nowrap;transition:background .2s}.amazon-btn:hover{background:var(--amazon-hover);text-decoration:none}.more-link{text-align:center;margin-top:24px}.more-link a{font-weight:600}.back-link{display:inline-block;margin-bottom:16px;font-size:.9rem}.detail-header{display:flex;gap:20px;margin-bottom:24px}.detail-cover{width:280px;height:420px;object-fit:cover;border-radius:6px;flex-shrink:0;box-shadow:0 4px 8px #00000026}.detail-info{flex:1;min-width:0}.detail-title{font-size:1.6rem;margin-bottom:12px}.detail-meta{color:var(--text-muted);margin-bottom:20px;font-size:.9rem}.detail-meta p{margin-bottom:4px}.detail-stats{display:flex;gap:16px;margin-bottom:20px}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:16px 20px;text-align:center;flex:1}.stat-card .stat-value{display:block;font-size:1.4rem;font-weight:700;color:var(--primary)}.stat-label{font-size:.75rem;color:var(--text-muted)}.amazon-btn-large{display:inline-block;padding:10px 24px;background:var(--amazon-orange);color:#fff;border-radius:6px;font-size:1rem;font-weight:600;margin-bottom:32px;transition:background .2s}.amazon-btn-large:hover{background:var(--amazon-hover);text-decoration:none}.video-list{display:flex;flex-direction:column;gap:12px}.video-card{display:flex;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:12px}.video-thumb{width:160px;height:90px;object-fit:cover;border-radius:4px;flex-shrink:0}.video-info{flex:1;min-width:0}.video-title{font-weight:600;font-size:.9rem;display:block;margin-bottom:4px;color:var(--text)}.video-title:hover{color:var(--primary)}.video-channel{font-size:.8rem;color:var(--text-muted);display:block;margin-bottom:4px}.video-stats{display:flex;gap:12px;font-size:.75rem;color:var(--text-muted)}.pagination{display:flex;justify-content:center;align-items:center;gap:4px;margin-top:24px;flex-wrap:wrap}.page-btn{min-width:36px;height:36px;padding:0 8px;border:1px solid var(--border);background:var(--surface);border-radius:6px;cursor:pointer;font-size:.9rem;font-family:inherit;color:var(--text);transition:all .2s}.page-btn:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}.page-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}.page-btn:disabled{opacity:.4;cursor:not-allowed}.page-ellipsis{padding:0 8px;color:var(--text-muted)}.page-heading{font-size:1.4rem;font-weight:700;margin-bottom:8px}.channel-list{display:flex;flex-direction:column;gap:8px}.channel-card{display:flex;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:16px;transition:box-shadow .2s}.channel-card:hover{box-shadow:0 2px 8px #00000014}.channel-info{flex:1;min-width:0}.channel-name{font-weight:600;font-size:1rem;color:var(--text);margin-bottom:4px}.channel-subscribers{font-size:.85rem;color:var(--text-muted);margin-bottom:2px}.channel-note{font-size:.8rem;color:var(--text-muted);margin-bottom:4px}.channel-stats{display:flex;gap:16px;font-size:.8rem;color:var(--text-muted);margin-top:4px}.channel-stats strong{color:var(--text)}.youtube-btn{display:inline-block;padding:6px 14px;background:red;color:#fff;border-radius:4px;font-size:.8rem;font-weight:600;white-space:nowrap;transition:background .2s}.youtube-btn:hover{background:#c00;text-decoration:none}.asin-form{display:flex;gap:8px;margin-bottom:24px}.asin-result{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:16px}.asin-label{font-size:.9rem;color:var(--text-muted);margin-bottom:8px}.asin-output{background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:12px;margin-bottom:12px;word-break:break-all}.asin-output a{font-size:.9rem}.footer{border-top:1px solid var(--border);padding:20px 0;text-align:center;color:var(--text-muted);font-size:.8rem}@media(max-width:600px){.ranking-card{flex-direction:column;align-items:center;overflow:hidden}.rank{min-width:28px}.book-cover{width:160px;height:240px}.book-info{width:100%;overflow:hidden}.book-title{white-space:normal;word-break:break-word}.book-description-excerpt{word-break:break-word}.book-keywords{max-width:100%}.book-stats{flex-wrap:wrap;gap:8px}.amazon-btn{width:100%;text-align:center}.detail-header{flex-direction:column;align-items:center}.detail-cover{width:200px;height:300px}.amazon-btn-large{width:100%;text-align:center;box-sizing:border-box}.detail-stats,.video-card{flex-direction:column}.video-thumb{width:100%;height:auto;aspect-ratio:16/9}.channel-card{flex-wrap:wrap}.channel-stats{flex-wrap:wrap;gap:8px}}.search-section{margin-bottom:24px}.search-results{margin-top:12px;border:1px solid var(--border);border-radius:8px;max-height:300px;overflow-y:auto}.search-result-item{display:flex;align-items:center;gap:12px;padding:12px;cursor:pointer;border-bottom:1px solid var(--border);transition:background .2s}.search-result-item:last-child{border-bottom:none}.search-result-item:hover{background:var(--surface)}.result-thumb{width:40px;height:60px;object-fit:cover;border-radius:4px}.result-info{flex:1;min-width:0}.result-info strong{display:block;font-size:.9rem;margin-bottom:4px}.result-author{font-size:.8rem;color:var(--text-muted)}.selected-book{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:20px;margin-bottom:24px}.selected-book h3{margin-bottom:16px;font-size:1.1rem}.book-detail{display:flex;gap:16px;margin-bottom:20px}.selected-thumb{width:80px;height:120px;object-fit:cover;border-radius:4px}.selected-info{flex:1}.selected-info .selected-title{font-weight:600;font-size:1rem;margin-bottom:8px}.selected-info p{font-size:.85rem;color:var(--text-muted);margin-bottom:4px}.description-input label{display:block;font-weight:600;margin-bottom:8px}.description-input textarea{width:100%;padding:12px;border:1px solid var(--border);border-radius:8px;font-size:.95rem;line-height:1.6;resize:vertical;font-family:inherit}.description-input textarea:focus{outline:none;border-color:var(--primary)}.description-input .char-count{text-align:right;font-size:.8rem;color:var(--text-muted);margin-top:4px}.save-btn{margin-top:12px;padding:10px 24px;background:var(--primary);color:#fff;border:none;border-radius:6px;font-size:.95rem;font-weight:600;cursor:pointer;transition:opacity .2s}.save-btn:hover{opacity:.9}.message{padding:12px 16px;background:#d4edda;color:#155724;border-radius:6px;margin-bottom:20px}.saved-section{margin-top:32px}.saved-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.saved-header h3{font-size:1.1rem}.export-btn{padding:8px 16px;background:#28a745;color:#fff;border:none;border-radius:6px;font-size:.85rem;cursor:pointer}.export-btn:hover{background:#218838}.saved-list{display:flex;flex-direction:column;gap:12px}.saved-item{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:16px}.saved-title{font-weight:600;margin-bottom:8px}.saved-description{font-size:.9rem;color:var(--text-muted);line-height:1.5;margin-bottom:12px;white-space:pre-wrap}.saved-actions{display:flex;gap:8px}.edit-btn,.delete-btn{padding:6px 12px;border:none;border-radius:4px;font-size:.8rem;cursor:pointer}.edit-btn{background:var(--primary);color:#fff}.delete-btn{background:#dc3545;color:#fff}.book-description-excerpt{font-size:.8rem;color:var(--text-muted);line-height:1.5;margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.book-keywords{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.keyword-tag{display:inline-block;padding:2px 10px;border:1px solid #22c55e;border-radius:12px;font-size:.75rem;color:#fff;background:#22c55e;cursor:pointer;transition:all .2s;text-decoration:none;font-family:inherit}.keyword-tag:hover{background:#16a34a;border-color:#16a34a;color:#fff;text-decoration:none}.book-keywords-section{margin:24px 0;padding:20px;background:var(--surface);border:1px solid var(--border);border-radius:8px}.book-keywords-section h2{font-size:1.1rem;margin-bottom:12px}.book-description{margin:24px 0;padding:20px;background:var(--surface);border:1px solid var(--border);border-radius:8px}.book-description h2{font-size:1.1rem;margin-bottom:12px}.book-description p{font-size:.95rem;line-height:1.8;color:var(--text);white-space:pre-wrap}