:root {
  color-scheme: light;
  --bg: #eef3ff;
  --bg-2: #f8fbff;
  --panel: #fff;
  --panel-soft: #f6f8fc;
  --text: #152238;
  --muted: #5f6f86;
  --line: #d7deea;
  --accent: #1e40af;
  --accent-soft: #e3ebff;
  --code-bg: #0f1b2d;
  --shadow: 0 16px 40px rgba(30, 64, 175, 0.12);
}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;min-height:100vh;background:linear-gradient(180deg,var(--bg) 0%,var(--bg-2) 60%,#f5f8ff 100%);color:var(--text);font-family:"IBM Plex Sans","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif}
button,input{font:inherit}
.page-tabs-wrap{padding:14px 14px 0}
.page-tabs{display:flex;gap:10px;overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--panel);box-shadow:var(--shadow);padding:10px 12px}
.top-tab{flex:0 0 auto;border:1px solid var(--line);background:#fff;color:var(--muted);border-radius:999px;padding:7px 14px;font-size:14px;cursor:pointer;white-space:nowrap}
.top-tab.active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:600}
.app{display:grid;grid-template-columns:minmax(280px,360px) minmax(0,1fr);min-height:calc(100vh - 96px);gap:14px;padding:0 14px 14px}
.sidebar-open{display:none;position:fixed;z-index:20;left:16px;top:74px;height:38px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--text);box-shadow:var(--shadow);cursor:pointer;padding:0 12px;white-space:nowrap}
.sidebar{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:14px;background:var(--panel);box-shadow:var(--shadow);min-height:calc(100vh - 28px);overflow:hidden}
.sidebar-header{padding:16px 16px 12px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#fff 0%,#f8faff 100%)}
.title-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.sidebar-tools{display:flex;align-items:center;gap:8px}
.sidebar-toggle{height:30px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--muted);cursor:pointer;line-height:1;padding:0 10px;white-space:nowrap}
.sidebar-toggle:hover,.sidebar-open:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
h1{margin:0;font-size:20px;line-height:1.25}.count{color:var(--muted);font-size:13px}
.search{width:100%;height:40px;border:1px solid var(--line);border-radius:10px;padding:0 12px;color:var(--text);background:var(--panel-soft);outline:none}
.search:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.tree{flex:1;overflow:auto;padding:12px}.tree ul{list-style:none;margin:0;padding-left:15px}.tree>ul{padding-left:0}
.node{width:100%;min-height:34px;display:flex;align-items:center;gap:6px;border:0;border-radius:8px;padding:6px 9px;background:transparent;color:var(--text);text-align:left;cursor:pointer}
.node:hover{background:var(--panel-soft)}.node.active{background:var(--accent-soft);color:#0b4f49;font-weight:600}
.node-icon{width:18px;flex:0 0 18px;color:var(--muted);text-align:center}.node-label{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.main{min-width:0}.viewer{min-height:calc(100vh - 28px);background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);overflow:hidden}
.viewer-header{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:58px;padding:12px 18px;border-bottom:1px solid var(--line);background:var(--panel-soft)}
.file-title strong,.file-title span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-title strong{font-size:16px}.file-title span{margin-top:3px;color:var(--muted);font-size:13px}
.actions{display:flex;gap:8px;flex-wrap:wrap}.action-button{height:34px;border:1px solid var(--line);border-radius:6px;padding:0 11px;color:var(--text);background:var(--panel);cursor:pointer;white-space:nowrap}.action-button:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.content{max-width:980px;margin:0 auto;padding:32px 34px 52px;line-height:1.75;word-break:break-word}
.content h1{font-size:30px;border-bottom:1px solid var(--line)}
.content h2{font-size:24px;border-bottom:1px solid var(--line)}
.content h3{font-size:20px}
.content p,.content ul,.content ol,.content blockquote,.content pre,.content table{margin:0 0 16px}
.content table{width:100%;border-collapse:collapse;display:block;overflow:auto;background:#fff}
.content th,.content td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.content th{background:var(--panel-soft);font-weight:600}
.content code{border-radius:4px;padding:2px 5px;background:#eef2f6;font-family:Consolas,monospace;font-size:.92em}
.content pre{overflow:auto;border-radius:8px;padding:14px 16px;background:var(--code-bg);color:#ecfdf5}
.content pre code{padding:0;background:transparent;color:inherit}
.content a{color:var(--accent)}
.empty,.loading{color:var(--muted)}
body.sidebar-collapsed .app{grid-template-columns:minmax(0,1fr)}
body.sidebar-collapsed .sidebar{display:none}
body.sidebar-collapsed .sidebar-open{display:block}
body.reader-fullscreen{background:#fff}
body.reader-fullscreen .page-tabs-wrap,
body.reader-fullscreen .sidebar,
body.reader-fullscreen .sidebar-open{display:none}
body.reader-fullscreen .app{display:block;min-height:100vh;padding:0}
body.reader-fullscreen .viewer{min-height:100vh;border:0;border-radius:0;box-shadow:none}
.viewer:fullscreen{overflow:auto;background:var(--panel);border:0;border-radius:0}
.viewer:fullscreen .content,
body.reader-fullscreen .content{max-width:1100px;min-height:calc(100vh - 58px);padding:34px clamp(18px,5vw,72px) 56px}
body.fullscreen-view{background:#fff}
body.fullscreen-view .page-tabs-wrap,
body.fullscreen-view .sidebar,
body.fullscreen-view .sidebar-open,
body.fullscreen-view .viewer-header{display:none}
body.fullscreen-view .app{display:block;min-height:100vh;padding:0}
body.fullscreen-view .viewer{min-height:100vh;border:0;border-radius:0;box-shadow:none}
body.fullscreen-view .content{max-width:none;width:100%;min-height:100vh;padding:34px clamp(18px,5vw,72px) 56px}
@media (max-width:860px){.app{grid-template-columns:1fr;gap:10px;padding:0 10px 10px;min-height:calc(100vh - 80px)}.sidebar-open{left:12px;top:68px}.page-tabs-wrap{padding:10px 10px 0}.sidebar{min-height:40vh}.viewer{min-height:56vh}.viewer-header{align-items:flex-start;flex-direction:column}.content{padding:22px 18px 36px}}
.action-button.primary{border-color:var(--accent);background:var(--accent);color:#fff}
.action-button.primary:hover{background:#17358f;color:#fff}
.admin-page{min-height:100vh;padding:24px}
.admin-shell{max-width:1400px;margin:0 auto}
.admin-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:18px}
.admin-header-actions{display:flex;gap:8px;flex-wrap:wrap}
.admin-subtitle{margin:6px 0 0;color:var(--muted)}
.admin-login-card,.admin-card{border:1px solid var(--line);border-radius:16px;background:var(--panel);box-shadow:var(--shadow);padding:20px}
.admin-login-card{max-width:460px}
.admin-panel{display:grid;gap:16px}
.admin-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.admin-form{display:grid;gap:14px}
.admin-field{display:grid;gap:8px}
.admin-field span{font-size:14px;color:var(--muted)}
.admin-field input,.admin-select,.admin-input{height:40px;border:1px solid var(--line);border-radius:10px;padding:0 12px;background:#fff;color:var(--text);width:100%}
.admin-field input:focus,.admin-select:focus,.admin-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.admin-form-actions{display:flex;gap:10px;flex-wrap:wrap}
.admin-message{min-height:22px;margin:10px 0 0;color:var(--muted)}
.admin-message.error,.admin-row-message.error{color:#b42318}
.admin-tip{margin:10px 0 0;color:var(--muted);line-height:1.6}
.admin-table-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.admin-table-heading{display:grid;gap:10px;min-width:0}
.admin-tabs{box-shadow:none;padding:0;border:0;background:transparent}
.admin-table-wrap{overflow:auto}
.admin-table{width:100%;border-collapse:collapse}
.admin-table th,.admin-table td{border-top:1px solid var(--line);padding:12px 10px;text-align:left;vertical-align:top}
.admin-table th{font-size:13px;color:var(--muted);background:var(--panel-soft);position:sticky;top:0}
.admin-doc-path{font-weight:600;word-break:break-all}
.admin-doc-meta{margin-top:6px;font-size:12px;color:var(--muted)}
.admin-password-cell,.admin-share-cell{display:grid;gap:8px;min-width:220px}
.admin-inline-actions{display:flex;gap:8px;flex-wrap:wrap}
.admin-row-message{min-height:20px;margin-top:8px;font-size:13px;color:var(--muted)}
@media (max-width:980px){.admin-grid{grid-template-columns:1fr}.admin-page{padding:12px}.admin-header{flex-direction:column}.admin-table th,.admin-table td{min-width:160px}}