:root{--bg:#f6f7f9;--card:#ffffff;--text:#1f2430;--muted:#6b7280;--line:#e5e7eb;--accent:#e8930c;--accent-dark:#c97b06;--accent-soft:#fdf3e3;--ok:#2e9e5b;--ok-soft:#e6f5ec;--warn:#e0a80c;--warn-soft:#fdf6e0;--danger:#d64545;--danger-soft:#fbeaea;--radius:12px;--shadow:0 1px 3px rgb(16 24 40 / 0.08), 0 1px 2px rgb(16 24 40 / 0.04);--shadow-lg:0 8px 24px rgb(16 24 40 / 0.14)}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}body{background:var(--bg);color:var(--text);font-family:"Segoe UI",system-ui,-apple-system,sans-serif;font-size:15px;line-height:1.5;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;gap:24px;padding:12px 28px;background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.topbar-logo{height:36px}.topbar-title{font-weight:600;color:var(--muted);flex:0 0 auto}.nav{display:flex;gap:6px;margin-left:auto}.nav a{padding:8px 16px;border-radius:999px;text-decoration:none;color:var(--text);font-weight:500}.nav a:hover{background:var(--accent-soft)}.nav a.active{background:var(--accent);color:#fff}.nav-external{color:var(--muted)}.view{max-width:1400px;width:100%;margin:0 auto;padding:28px;flex:1;min-height:0;overflow-y:auto;scrollbar-gutter:stable}.view.view-fill{overflow:hidden;display:flex;flex-direction:column}.view-fill .guide-editor{flex:1;min-height:0;align-items:stretch}.view-fill .guide-editor .panel{display:flex;flex-direction:column;min-height:0}.panel-scroll{overflow-y:auto;flex:1;min-height:0;scrollbar-gutter:stable;padding-right:4px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.page-head{display:flex;align-items:center;gap:16px;margin-bottom:20px;flex-wrap:wrap}.page-head h1{font-size:22px;margin:0;flex:1 1 auto}button,.btn{font:inherit;border:none;border-radius:8px;padding:9px 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li.done{color:var(--ok)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.tile{padding:0;overflow:hidden;display:flex;flex-direction:column}.tile-media{height:150px;background:#eef0f3;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px;overflow:hidden;position:relative}.tile-media img,.tile-media video{width:100%;height:100%;object-fit:cover}.tile-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:6px;flex:1}.tile-title{font-weight:600;display:flex;align-items:center;gap:8px}.tile-sub{color:var(--muted);font-size:13px;min-height:18px}.tile-foot{display:flex;gap:8px;margin-top:auto;padding-top:10px;align-items:center}.filterbar{display:flex;gap:10px;align-items:center;margin-bottom:18px;flex-wrap:wrap}.filterbar input[type="search"]{max-width:260px}.chip{padding:6px 14px;border-radius:999px;border:1px solid var(--line);background:var(--card);cursor:pointer;font-size:13px;font-weight:600;color:var(--text)}.chip:hover{background:var(--accent-soft)}.chip.active{background:var(--text);color:#fff;border-color:var(--text)}.guide-editor{display:grid;grid-template-columns:1fr 1.2fr;gap:20px;align-items:start}.panel{padding:18px}.panel h2{font-size:15px;margin:0 0 12px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}.pool-item{display:flex;gap:10px;align-items:center;padding:10px 12px;border:1px solid var(--line);border-radius:8px;margin-bottom:8px;background:var(--card);cursor:grab}.pool-item:active{cursor:grabbing}.pool-item .drag-handle{color:var(--muted);font-size:16px}.pool-item.in-guide{opacity:.45}.guide-list{min-height:200px;border-radius:8px}.guide-list.drag-over{outline:2px dashed var(--accent);outline-offset:4px}.chapter-divider{padding:6px 12px;border-radius:6px;font-size:12px;font-weight:700;letter-spacing:.08em;margin:14px 0 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td{border-bottom:none}.color-swatch{width:42px;height:28px;border:1px solid var(--line);border-radius:6px;padding:0;background:none;cursor:pointer}.toast-container{position:fixed;bottom:20px;right:20px;display:flex;flex-direction:column;gap:8px;z-index:100}.toast{background:var(--text);color:#fff;padding:12px 18px;border-radius:10px;box-shadow:var(--shadow-lg);max-width:360px;font-size:14px;animation:toast-in 0.25s ease}.toast.error{background:var(--danger)}.toast.success{background:var(--ok)}@keyframes toast-in{from{transform:translateY(8px);opacity:0}to{transform:none;opacity:1}}.modal-overlay{position:fixed;inset:0;background:rgb(16 24 40 / .4);display:flex;align-items:flex-start;justify-content:center;padding:6vh 16px;z-index:50}.modal{background:var(--card);border-radius:14px;box-shadow:var(--shadow-lg);width:100%;max-width:720px;max-height:88vh;overflow:auto;padding:24px}.modal h2{margin:0 0 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