:root{--bg:#f5f6f8;--panel:#fff;--text:#172033;--muted:#6b7280;--border:#e5e7eb;--primary:#2956a6;--danger:#dc2626;--ok:#16a34a;--warn:#f59e0b}
*{box-sizing:border-box}body{margin:0;font-family:Arial,sans-serif;background:var(--bg);color:var(--text)}
header{display:flex;gap:10px;align-items:center;padding:14px 18px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}
h1{font-size:19px;margin:0;white-space:nowrap}.search{flex:1}.search input{width:100%}
input,textarea,select{border:1px solid var(--border);border-radius:10px;padding:10px 12px;font-size:14px;outline:none;width:100%}
textarea{min-height:150px;resize:vertical;font-family:Consolas,monospace}input:focus,textarea:focus,select:focus{border-color:var(--primary)}
button{border:1px solid var(--border);background:#fff;padding:10px 12px;border-radius:10px;cursor:pointer;font-weight:600;white-space:nowrap}
button:hover{border-color:var(--primary)}button.primary{background:var(--primary);color:#fff;border-color:var(--primary)}button.danger{color:var(--danger);border-color:#fecaca}
main{display:grid;grid-template-columns:380px 1fr;gap:18px;padding:18px;max-width:1600px;margin:0 auto}
.card{background:#fff;border:1px solid var(--border);border-radius:14px;overflow:hidden}.card-title{padding:14px 16px;border-bottom:1px solid var(--border);font-weight:700;display:flex;justify-content:space-between;align-items:center;gap:10px}
.tree{padding:10px;max-height:calc(100vh - 128px);overflow:auto}.node{margin:2px 0}.node-row{display:flex;align-items:center;gap:7px;padding:8px;border-radius:8px;cursor:pointer;user-select:none}.node-row:hover{background:#f1f5ff}.node-row.active{background:#eaf0ff;color:var(--primary);font-weight:700}
.toggle{width:18px;color:var(--muted);text-align:center;font-size:12px}.level{font-size:12px;color:var(--muted);min-width:28px}.children{margin-left:18px;display:none}.node.open>.children{display:block}.leaf .toggle{color:transparent}
.panel{padding:16px}.panel h2{margin:0 0 8px;font-size:22px}.meta{color:var(--muted);font-size:13px;margin-bottom:12px}.path{font-size:13px;padding:10px;background:#f8fafc;border:1px solid var(--border);border-radius:10px;word-break:break-word;margin-bottom:14px}
.tabs{display:flex;gap:8px;border-bottom:1px solid var(--border);padding:0 16px;background:#fff}.tab{padding:13px 10px;cursor:pointer;border-bottom:3px solid transparent;font-weight:700;color:var(--muted)}.tab.active{color:var(--primary);border-bottom-color:var(--primary)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}.row{display:flex;gap:8px;flex-wrap:wrap}.label{font-size:13px;font-weight:700;color:#374151;margin:8px 0 6px}.stats{color:var(--muted);font-size:13px;font-weight:400}
table{width:100%;border-collapse:collapse;margin-top:12px;font-size:14px}th,td{border-bottom:1px solid var(--border);padding:9px;text-align:left;vertical-align:top}th{background:#f8fafc;font-size:12px;color:#374151}
.badge{display:inline-block;font-size:12px;padding:3px 8px;border-radius:999px;background:#f3f4f6;color:#374151}.low{background:#ecfdf5;color:#15803d}.medium{background:#fff7ed;color:#c2410c}.high{background:#fef2f2;color:#b91c1c}
.notice{font-size:13px;color:var(--muted);background:#f8fafc;border:1px solid var(--border);border-radius:10px;padding:10px;margin:12px 0}.hidden{display:none}mark{background:#fff3bf;padding:0 2px;border-radius:3px}
@media(max-width:980px){header{flex-direction:column;align-items:stretch}main{grid-template-columns:1fr}.tree{max-height:none}.grid2,.grid3{grid-template-columns:1fr}}
.state-dot{font-size:12px;line-height:1;display:inline-flex;align-items:center;justify-content:center;min-width:16px}
textarea.small-area{min-height:70px}
hr{border:0;border-top:1px solid var(--border);margin:16px 0}
.suggest-list{border:1px solid var(--border);border-radius:10px;background:#f8fafc;padding:8px;display:grid;gap:6px}
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:12px 0}
.check-row{display:flex;align-items:center;gap:8px;padding:9px 10px;border:1px solid var(--border);border-radius:10px;background:#fff;font-size:14px;cursor:pointer}
.check-row input{width:auto;min-width:16px}
.check-row span{line-height:1.3}
@media(max-width:980px){.check-grid{grid-template-columns:1fr}}
.tool-row{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 12px}
.tool-link{display:inline-flex;align-items:center;gap:6px;text-decoration:none;border:1px solid var(--border);border-radius:10px;background:#fff;padding:9px 11px;font-weight:700;color:var(--text);font-size:14px}
.tool-link:hover{border-color:var(--primary);color:var(--primary)}
.seed-stats .path{margin-bottom:0;font-weight:700}
.keyword-toolbar{display:grid;grid-template-columns:minmax(220px,1fr) auto;gap:10px;align-items:center;margin:8px 0}
.sort-group{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}
.sort-btn{padding:8px 10px;font-size:12px}
.keyword-row{cursor:pointer}
.keyword-row:hover{background:#f8fafc}
.keyword-row.active-row{background:#eaf0ff}
.keyword-delete-col,.keyword-delete-cell{width:40px;min-width:40px;max-width:44px;text-align:center;padding:6px 4px;vertical-align:middle}
.keyword-delete-btn{width:28px;height:28px;padding:0;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;border-color:#e5e7eb;color:#9ca3af;background:#fff;font-size:12px;line-height:1}
.keyword-delete-btn:hover{border-color:#fecaca;background:#fef2f2;color:var(--danger)}
.checklist-actions{margin:6px 0 8px}
@media(max-width:980px){.keyword-toolbar{grid-template-columns:1fr}.sort-group{justify-content:flex-start}}
.seed-edit{align-items:end;margin:10px 0 12px}
.seed-save{display:flex;align-items:end}
.seed-save button{width:auto}
.manage-box{border:1px solid var(--border);border-radius:10px;background:#f8fafc;padding:12px;margin:12px 0}
.manage-box h3{margin:0 0 8px;font-size:16px}
.manage-row{display:grid;grid-template-columns:minmax(200px,1fr) auto;gap:8px;align-items:end}
.compact-manage{margin-top:12px}
@media(max-width:980px){.manage-row{grid-template-columns:1fr}}
.cluster-list{display:grid;gap:10px;margin:10px 0 16px}
.cluster-card{border:1px solid var(--border);border-radius:10px;background:#fff;padding:12px}
.cluster-card h3{margin:0 0 8px;font-size:16px}
.cluster-keywords{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.rich-check{align-items:flex-start}
.rich-check span{display:block}
.rich-check .meta{margin:4px 0 0;padding:0;border:0;background:transparent}
.video-topic-card{border:1px solid var(--border);border-radius:10px;background:#fff;padding:10px;display:grid;gap:8px}
.video-topic-card .check-row{border:0;padding:0}
.topic-card-grid{display:grid;grid-template-columns:repeat(5,minmax(120px,1fr));gap:6px;margin-top:6px;color:var(--muted);font-size:12px}
.video-topic-detail{border-top:1px solid var(--border);padding-top:8px}
.video-topic-detail summary{cursor:pointer;font-weight:700;color:var(--primary);font-size:13px}
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.copy-box{border:1px solid var(--border);border-radius:8px;background:#f8fafc;padding:9px;font-size:13px;line-height:1.45;word-break:break-word}
.tag-copy-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;align-items:start}
.modal-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.45);display:flex;align-items:center;justify-content:center;z-index:1000;padding:18px}
.modal-box{background:#fff;border-radius:10px;border:1px solid var(--border);box-shadow:0 20px 60px rgba(15,23,42,.25);max-width:760px;width:100%;padding:18px}
.modal-box h2{margin:0 0 10px;font-size:20px}
.modal-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:10px 0}
.modal-grid ul{margin:6px 0 0;padding-left:20px}
.modal-actions{justify-content:flex-end;margin-top:12px}
.csv-preview{max-height:280px;overflow:auto;border:1px solid var(--border);border-radius:10px;background:#fff;margin-top:8px}
.csv-preview table{margin-top:0}
.csv-map-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:10px 0}
.csv-map-grid label{font-size:13px;font-weight:700;color:#374151}
.csv-map-grid select{margin-top:6px}
.topic-sort{justify-content:flex-start;margin:8px 0 12px}
.ranking-list,.backlog-list{display:grid;gap:10px;margin-top:10px}
.ranking-card{display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:12px;align-items:start;border:1px solid var(--border);border-radius:10px;background:#fff;padding:12px}
.rank-num{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:#eaf0ff;color:var(--primary);font-weight:800}
.rank-main h3{margin:0 0 6px;font-size:17px}
.rank-meta{font-size:13px;color:#374151;line-height:1.6}
.inline-number{display:inline-block;width:66px;padding:5px 7px;border-radius:8px;font-weight:700}
.backlog-row{display:grid;grid-template-columns:minmax(0,1fr) 150px auto;gap:8px;align-items:center;border:1px solid var(--border);border-radius:10px;background:#fff;padding:10px}
.backlog-row.doing{border-color:#93c5fd;background:#eff6ff}
.backlog-row.done{border-color:#86efac;background:#f0fdf4}
.backlog-row.skip{opacity:.68}
.backlog-row .check-row{margin:0}
.backlog-row .meta{display:block;margin:4px 0 0}
.recommend-card{border:1px solid var(--border);border-radius:10px;background:#fff;padding:14px;margin:10px 0 12px;display:grid;gap:12px}
.recommend-topline{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.recommend-topline h3{margin:0;font-size:20px;line-height:1.25}
.focus-line{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:14px;color:var(--muted)}
.focus-line b{color:var(--text)}
.recommend-badges{display:flex;gap:7px;flex-wrap:wrap}
.rec-badge{display:inline-flex;align-items:center;border:1px solid var(--border);border-radius:999px;background:#f8fafc;color:#374151;font-size:12px;font-weight:700;padding:5px 9px}
.recommend-section{border-top:1px solid var(--border);padding-top:10px}
.compact-list{margin:0;padding-left:18px;line-height:1.65}
.next-topic-list{margin:0;padding-left:24px;display:grid;gap:7px}
.next-topic-list li{padding-left:4px}
.next-topic-list span{display:inline-block;margin-right:8px}
.next-topic-list b{font-size:12px;color:var(--primary)}
.technical-report{border:1px solid var(--border);border-radius:10px;background:#f8fafc;padding:10px;margin:12px 0}
.technical-report summary{cursor:pointer;font-weight:700;color:var(--primary)}
.recommend-empty{font-size:14px;color:var(--muted);background:#f8fafc;border:1px solid var(--border);border-radius:10px;padding:12px;margin:10px 0}
.icon-btn{width:32px;height:32px;padding:0;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;font-size:12px}
.excluded-keywords{border:1px solid var(--border);border-radius:10px;background:#f8fafc;padding:10px;margin:8px 0 16px}
.excluded-keywords summary{cursor:pointer;font-weight:700;color:var(--primary)}
.toast{position:fixed;right:18px;bottom:18px;z-index:1100;display:flex;gap:10px;align-items:center;background:#172033;color:#fff;border-radius:10px;padding:10px 12px;box-shadow:0 12px 34px rgba(15,23,42,.25);font-size:14px}
.toast button{padding:6px 9px;border-radius:8px;background:#fff;color:#172033}
@media(max-width:980px){.modal-grid{grid-template-columns:1fr}}
@media(max-width:980px){.topic-card-grid,.detail-grid,.tag-copy-row{grid-template-columns:1fr}}
@media(max-width:980px){.csv-map-grid{grid-template-columns:1fr}}
@media(max-width:980px){.ranking-card,.backlog-row{grid-template-columns:1fr}.rank-num{width:30px;height:30px}}