:root{
  --primary:#005ed3;
  --secondary:#fec000;
  --accent:#ff0335;
  --bg:#f5f6f8;
  --surface:#ffffff;
  --surface-2:#fafafa;
  --text:#1f2937;
  --muted:#6b7280;
  --line:#e5e7eb;
  --drawer:256px;
  --topbar:64px;
  --radius:12px;
  --shadow:0 4px 16px rgba(15,23,42,.08);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC","Microsoft YaHei",sans-serif}
a{color:inherit;text-decoration:none}
.app{min-height:100vh}
.sidebar{position:fixed;inset:0 auto 0 0;width:var(--drawer);background:var(--surface);border-right:1px solid var(--line);z-index:20;display:flex;flex-direction:column;transition:transform .2s ease}
.brand{height:64px;display:flex;align-items:center;gap:12px;padding:0 18px;border-bottom:1px solid var(--line)}
.logo{width:40px;height:40px;display:block;object-fit:contain;flex:0 0 auto}
.brand-title{font-size:20px;font-weight:600}
.nav-section{padding:10px 8px}
.nav-title{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:12px 12px 6px}
.nav-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:8px;color:#374151;cursor:pointer}
.nav-item:hover,.nav-item.active{background:#edf5ff;color:var(--primary)}
.nav-item .count{margin-left:auto;color:#64748b;font-size:12px;background:#f1f5f9;border-radius:99px;padding:2px 8px}
.topbar{position:fixed;left:var(--drawer);right:0;top:0;height:var(--topbar);background:var(--surface);border-bottom:1px solid var(--line);z-index:10;display:flex;align-items:center;padding:0 22px;gap:16px;transition:left .2s ease}
.menu-btn{width:40px;height:40px;border:0;background:transparent;border-radius:50%;font-size:24px;cursor:pointer;color:#4b5563}
.menu-btn:hover{background:#f3f4f6}
.search{flex:1;position:relative}
.search input{width:100%;height:44px;border:0;outline:0;background:#f1f3f5;border-radius:6px;padding:0 16px 0 44px;font-size:15px}
.search:before{content:"⌕";position:absolute;left:15px;top:8px;font-size:24px;color:#6b7280}
.toolbar-actions{display:flex;align-items:center;gap:10px;color:#6b7280}
.main{margin-left:var(--drawer);padding-top:var(--topbar);min-height:100vh;transition:margin-left .2s ease}
body.sidebar-collapsed .sidebar{transform:translateX(-100%)}
body.sidebar-collapsed .topbar{left:0}
body.sidebar-collapsed .main{margin-left:0}
.container{padding:24px 30px 64px}
.library-container{max-width:1320px;margin:0 auto}
.page-head{display:flex;align-items:flex-end;gap:16px;justify-content:space-between;margin-bottom:18px}
h1{font-size:32px;line-height:1.2;margin:0;font-weight:500}
.subtle{color:var(--muted)}
.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin:8px 0 16px}
.tab{padding:12px 14px;border-bottom:3px solid transparent;color:#4b5563;cursor:pointer}
.tab.active{border-color:var(--primary);color:var(--primary);font-weight:600}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 14px}
.chip{font:inherit;font-size:13px;padding:6px 12px;border-radius:999px;background:var(--surface);border:1px solid var(--line);color:#475569;cursor:pointer}
.chip:hover,.chip.active{border-color:var(--primary);background:#edf5ff;color:var(--primary)}
.chip.active{font-weight:600}
.chip[hidden]{display:none}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:18px;align-items:start}
.card{background:var(--surface);border-radius:10px;box-shadow:var(--shadow);border:1px solid rgba(15,23,42,.06);overflow:hidden;transition:transform .15s ease, box-shadow .15s ease}
.card:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(15,23,42,.14)}
.cover-wrap{position:relative;background:#e5e7eb}
.cover{width:100%;aspect-ratio:1/1.414;object-fit:cover;display:block}
.badge{position:absolute;left:8px;top:8px;background:rgba(0,0,0,.72);color:white;border-radius:999px;font-size:12px;padding:3px 7px}
.card-body{padding:10px 10px 12px}
.card-title{font-size:14px;line-height:1.35;font-weight:600;min-height:38px}
.card-meta{margin-top:6px;color:#6b7280;font-size:12px}
.placeholder{opacity:.62}
.series-layout{display:grid;grid-template-columns:minmax(180px,260px) 1fr;gap:28px;align-items:start}
.series-cover{width:100%;border-radius:12px;box-shadow:var(--shadow);background:white}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:var(--shadow)}
.series-info{max-width:860px}
.series-meta{margin-top:8px;color:var(--muted);font-size:14px}
.series-synopsis{margin-top:16px;padding:14px 16px;border:1px solid var(--line);border-radius:10px;background:#fafafa}
.series-synopsis h2{margin:0 0 8px;font-size:16px;line-height:1.3;font-weight:600}
.series-synopsis p{margin:0;color:#475569;font-size:14px;line-height:1.75;white-space:pre-line}
.series-synopsis p.empty{color:#94a3b8}
.volumes{display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));gap:16px;margin-top:18px}
.novel-volumes{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
.volume-card{display:block;min-width:0;border-radius:8px;overflow:hidden;background:#fff;border:1px solid rgba(15,23,42,.08);box-shadow:0 2px 10px rgba(15,23,42,.06);transition:transform .15s ease, box-shadow .15s ease, border-color .15s ease}
.volume-card:hover{transform:translateY(-2px);border-color:rgba(0,94,211,.35);box-shadow:0 8px 24px rgba(15,23,42,.14)}
.volume-cover-wrap{background:#e5e7eb}
.volume-cover{width:100%;aspect-ratio:1/1.414;object-fit:cover;display:block}
.volume-body{padding:10px}
.volume-body strong{display:block;font-size:14px;line-height:1.3;color:#111827;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.volume-body span{display:block;margin-top:4px;font-size:12px;line-height:1.35;color:var(--muted)}
.reader-shell{max-width:1280px;margin:auto}
.reader-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.reader-frame{background:#111827;border-radius:14px;padding:16px;box-shadow:var(--shadow);min-height:420px;display:grid;place-items:center}
.reader-shell:fullscreen{max-width:none;margin:0;background:var(--bg);padding:20px 24px;overflow:auto}
.reader-shell:fullscreen .reader-frame{min-height:calc(100vh - 150px)}
.reader-shell:fullscreen .reader-page{max-height:calc(100vh - 190px)}
.reader-spread{width:100%;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;align-items:center}
.reader-spread.single{display:flex;justify-content:center}
.reader-page{width:100%;max-height:78vh;object-fit:contain;border-radius:8px;background:white}
.reader-spread.single .reader-page{max-width:min(640px,100%)}
.reader-controls{display:flex;justify-content:center;align-items:center;gap:10px;margin:16px 0;flex-wrap:wrap}
.btn{border:0;background:var(--primary);color:#fff;border-radius:8px;padding:10px 16px;font-weight:600;cursor:pointer}
.btn.secondary{background:#f3f4f6;color:#111827;border:1px solid var(--line)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.modal{position:fixed;inset:0;background:rgba(15,23,42,.45);display:none;align-items:center;justify-content:center;z-index:50}
.modal.show{display:flex}
.modal-card{width:min(420px,90vw);background:white;border-radius:16px;padding:24px;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.modal-card h2{margin:0 0 8px;font-size:22px}
.novel-root .series-layout{margin-bottom:16px}
.novel-reader{width:min(1180px,100%);margin:0 auto;background:white;border:1px solid var(--line);border-radius:14px;padding:30px clamp(24px,4vw,56px);box-shadow:var(--shadow);font-size:18px;line-height:1.9;white-space:pre-wrap}
.novel-controls{margin-top:12px}
.notice{padding:12px 14px;border-radius:10px;background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;margin:12px 0}
@media (max-width: 900px){
  :root{--drawer:0px}
  .sidebar{transform:translateX(-100%);transition:.2s ease}
  .sidebar.open{transform:translateX(0)}
  .topbar{left:0}
  .main{margin-left:0}
  .series-layout{grid-template-columns:1fr}
  .reader-frame{padding:8px;border-radius:10px}
  .reader-spread{gap:6px}
}