:root{color-scheme:light dark;--bg: #f6f7f9;--surface: #ffffff;--border: #dfe3e8;--text: #1c2024;--muted: #6b7280;--accent: #1f6feb;--accent-soft: #eaf2ff;--surface-subtle: #f8fafc;--danger: #c62828;--radius: 12px;--shadow: 0 16px 40px rgb(30 64 175 / 8%);font-family:system-ui,-apple-system,Segoe UI,Microsoft YaHei,sans-serif}@media(prefers-color-scheme:dark){:root{--bg: #14161a;--surface: #1c1f24;--border: #2b3038;--text: #e8eaed;--muted: #9aa2ad;--accent-soft: #162b4d;--surface-subtle: #171b21;--shadow: 0 16px 40px rgb(0 0 0 / 28%)}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}a{color:var(--accent);text-decoration:none}.app-shell{display:flex;flex-direction:column;min-height:100vh}.app-header{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;justify-content:space-between;padding:.75rem 1rem;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:5}.brand{font-weight:700;color:var(--text)}.app-nav{display:flex;flex-wrap:wrap;gap:.5rem}.app-nav a{padding:.35rem .6rem;border-radius:var(--radius);color:var(--text)}.app-nav a.active,.admin-nav a.active{background:var(--accent);color:#fff}.app-main{flex:1;padding:1rem;max-width:1200px;width:100%;margin:0 auto}.app-footer{padding:1rem;text-align:center;color:var(--muted);font-size:.85rem}.page{display:flex;flex-direction:column;gap:1rem}.page.narrow{max-width:640px;margin:0 auto}.hero h1{margin:0 0 .25rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem}.eyebrow{margin:0 0 .35rem;color:var(--accent);font-size:.72rem;font-weight:750;letter-spacing:.12em}.page-intro h1,.library-header h1{margin:0;font-size:clamp(1.75rem,4vw,2.45rem);line-height:1.15}.page-intro p:last-child,.library-header p:last-child{margin:.55rem 0 0;color:var(--muted)}.card-header{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;justify-content:space-between}.card-grid{display:grid;gap:.75rem;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.tile{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;color:var(--text)}.toolbar{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;margin:.5rem 0}input,select,textarea{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:.45rem .6rem;font:inherit;min-width:0}textarea{width:100%;min-height:90px}button{background:transparent;border:1px solid var(--border);border-radius:8px;padding:.4rem .7rem;color:var(--text);cursor:pointer;font:inherit}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.danger{color:var(--danger);border-color:var(--danger)}button:disabled{opacity:.5;cursor:not-allowed}.field{display:flex;flex-direction:column;gap:.25rem;margin-bottom:.6rem}.checkbox{display:flex;align-items:center;gap:.3rem}.dropzone{display:flex;align-items:center;justify-content:center;gap:.85rem;border:2px dashed var(--border);border-radius:var(--radius);padding:1rem 1.2rem;cursor:pointer;min-height:94px;background:linear-gradient(135deg,var(--surface),var(--accent-soft));transition:border-color .16s ease,transform .16s ease,box-shadow .16s ease}.dropzone:hover,.dropzone:focus-within{border-color:var(--accent);transform:translateY(-1px);box-shadow:var(--shadow)}.dropzone input{display:none}.dropzone-mark{display:grid;place-items:center;width:42px;height:42px;flex:0 0 auto;border-radius:50%;background:var(--accent);color:#fff;font-size:1.35rem;font-weight:700}.dropzone-copy{display:flex;flex-direction:column;gap:.2rem;text-align:left}.dropzone-copy small{color:var(--muted)}.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}.data-table{width:100%;border-collapse:collapse;font-size:.92rem}.data-table th,.data-table td{text-align:left;padding:.5rem;border-bottom:1px solid var(--border);vertical-align:middle}.row-actions{display:flex;gap:.35rem;flex-wrap:wrap}.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:.35rem;font-size:.9rem}.breadcrumbs button{background:none;border:none;padding:.15rem .25rem;color:var(--accent);cursor:pointer;font:inherit}.breadcrumbs button:hover{text-decoration:underline}.breadcrumb-item{display:inline-flex;align-items:center;gap:.35rem;color:var(--muted)}.bulk-actions{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;margin-bottom:.5rem}.folder-panel .folder-panel-header{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:.5rem}.folder-panel h2{margin:0;font-size:1rem}.folder-grid{list-style:none;margin:.75rem 0 0;padding:0;display:grid;gap:.5rem;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}.folder-card{display:flex;align-items:center;justify-content:space-between;gap:.5rem;border:1px solid var(--border);border-radius:var(--radius);padding:.5rem .6rem;background:var(--bg)}.folder-open{display:flex;flex-direction:column;align-items:flex-start;gap:.15rem;background:none;border:none;padding:0;color:var(--text);cursor:pointer;text-align:left;font:inherit;min-width:0}.folder-name{font-weight:600;overflow-wrap:anywhere}.folder-meta{color:var(--muted);font-size:.78rem}.folder-actions{display:flex;gap:.25rem;flex-shrink:0}.upload-page,.library-page{gap:1.15rem}.upload-composer{padding:1.1rem;box-shadow:var(--shadow)}.upload-composer-row{display:grid;grid-template-columns:minmax(260px,.8fr) minmax(340px,1.2fr);gap:.85rem}.upload-source-actions{display:grid;grid-template-columns:1fr 1fr;gap:.65rem}.upload-source-actions .dropzone,.folder-picker{min-width:0;min-height:94px}.folder-picker{display:flex;align-items:center;justify-content:center;gap:.75rem;padding:1rem;border:2px dashed var(--border);border-radius:var(--radius);background:linear-gradient(135deg,var(--surface),var(--surface-subtle));cursor:pointer;transition:border-color .16s ease,transform .16s ease,box-shadow .16s ease}.folder-picker:hover,.folder-picker:focus-within{border-color:var(--accent);transform:translateY(-1px);box-shadow:var(--shadow)}.folder-picker.disabled{opacity:.65;cursor:wait;transform:none}.folder-picker input{display:none}.destination-picker{display:grid;grid-template-columns:auto 1fr;gap:.75rem;align-items:center;min-height:94px;padding:.9rem 1rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-subtle)}.destination-picker select{grid-column:1 / -1;width:100%}.destination-icon,.folder-picker-icon,.folder-icon,.empty-folder-mark{position:relative;display:inline-block;width:38px;height:27px;flex:0 0 auto;border-radius:5px;background:linear-gradient(145deg,#f8c24f,#efa72c);box-shadow:inset 0 -2px #6f450024}.destination-icon:before,.folder-picker-icon:before,.folder-icon:before,.empty-folder-mark:before{content:"";position:absolute;top:-7px;left:3px;width:18px;height:9px;border-radius:5px 5px 0 0;background:#f8c24f}.destination-copy{display:flex;flex-direction:column;gap:.15rem}.destination-copy small{color:var(--muted)}.upload-trust-row{display:grid;grid-template-columns:repeat(4,1fr);gap:.55rem;margin-top:.9rem}.upload-trust-row span{padding:.55rem .65rem;border-radius:9px;background:var(--surface-subtle);color:var(--muted);font-size:.8rem;text-align:center}.upload-trust-row span:before{content:"✓";margin-right:.35rem;color:#238636;font-weight:700}.queue-card{padding:1.1rem}.section-heading h2,.file-list-header h2,.folder-panel-header h2{margin:0}.library-header{display:flex;align-items:end;justify-content:space-between;gap:1rem;padding:1.35rem;border:1px solid var(--border);border-radius:calc(var(--radius) + 2px);background:radial-gradient(circle at 92% 8%,rgb(31 111 235 / 16%),transparent 34%),var(--surface);box-shadow:var(--shadow)}.library-tools{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:.55rem}.library-tools input[type=search]{min-width:min(290px,100%)}.file-explorer-shell{display:grid;grid-template-columns:minmax(220px,260px) minmax(0,1fr);gap:1rem;align-items:start}.directory-sidebar{position:sticky;top:76px;display:flex;flex-direction:column;max-height:calc(100vh - 96px);padding:0;overflow:hidden;box-shadow:var(--shadow)}.directory-sidebar-header{display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding:.9rem 1rem;border-bottom:1px solid var(--border)}.directory-sidebar-header div{display:flex;flex-direction:column;gap:.12rem}.directory-sidebar-header strong{font-size:1rem}.directory-sidebar-header span,.directory-sidebar-footer{color:var(--muted);font-size:.75rem}.directory-sidebar-header button{display:grid;place-items:center;width:32px;height:32px;padding:0;border-color:transparent;background:var(--accent-soft);color:var(--accent);font-size:1.2rem;font-weight:700}.directory-sidebar-header button:hover{border-color:var(--accent)}.directory-tree{flex:1;min-height:150px;padding:.55rem;overflow-y:auto;overscroll-behavior:contain}.directory-tree-list,.directory-tree-children{list-style:none;margin:0;padding:0}.directory-tree-children{margin-left:.78rem;padding-left:.55rem;border-left:1px solid var(--border)}.directory-tree li{margin:.12rem 0}.directory-tree-row{display:grid;grid-template-columns:24px minmax(0,1fr);gap:.1rem;align-items:center;width:100%}.directory-root-row{margin-bottom:.2rem}.directory-tree button{border-color:transparent}.tree-toggle{display:grid;place-items:center;width:24px;min-height:38px;padding:0;border-radius:6px;color:var(--muted)}.tree-toggle span{display:inline-block;font-size:1.15rem;line-height:1;transition:transform .14s ease}.tree-toggle.expanded span{transform:rotate(90deg)}.tree-toggle-spacer{width:24px;min-height:38px}.tree-entry{display:grid;grid-template-columns:20px minmax(0,1fr) auto;gap:.45rem;align-items:center;width:100%;min-height:38px;padding:.42rem .5rem;border-radius:8px;text-align:left}.tree-toggle:hover,.tree-entry:hover{background:var(--surface-subtle)}.tree-entry.active{background:var(--accent-soft);color:var(--accent);font-weight:650}.tree-folder-icon{position:relative;display:inline-block;width:18px;height:14px;border-radius:3px;background:linear-gradient(145deg,#f8c24f,#efa72c)}.tree-folder-icon:before{content:"";position:absolute;top:-4px;left:2px;width:8px;height:5px;border-radius:3px 3px 0 0;background:#f8c24f}.tree-root-icon{display:grid;place-items:center;width:20px;color:var(--accent);font-size:1rem}.tree-folder-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tree-folder-count{min-width:1.5rem;padding:.08rem .35rem;border-radius:999px;background:var(--surface-subtle);color:var(--muted);font-size:.7rem;text-align:center}.tree-entry.active .tree-folder-count{background:var(--surface);color:var(--accent)}.directory-tree .spinner{padding:.75rem .5rem;font-size:.8rem}.directory-tree-empty{margin:.55rem .5rem;color:var(--muted);font-size:.78rem}.directory-sidebar-footer{padding:.7rem 1rem;border-top:1px solid var(--border);background:var(--surface-subtle)}.explorer-content{display:flex;min-width:0;flex-direction:column;gap:1rem}.path-bar{display:flex;flex-wrap:wrap;align-items:center;gap:.2rem;padding:.55rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}.path-label{margin:0 .35rem 0 .2rem;color:var(--muted);font-size:.78rem;font-weight:600}.path-bar button{border:0;padding:.42rem .58rem;color:var(--muted)}.path-bar button:hover,.path-bar button.current{background:var(--accent-soft);color:var(--accent)}.home-mark{margin-right:.3rem}.path-separator{color:var(--muted)}.directory-section,.file-list-card{padding:1.15rem}.folder-panel .folder-panel-header,.file-list-header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.75rem}.directory-location,.access-note,.admin-only-note{padding:.3rem .55rem;border-radius:999px;background:var(--surface-subtle);color:var(--muted);font-size:.78rem}.section-subtitle{margin:.3rem 0 0;color:var(--muted);font-size:.82rem}.admin-only-note{background:#c6282817;color:var(--danger)}.count-pill{display:inline-grid;place-items:center;min-width:1.7rem;min-height:1.7rem;margin-left:.25rem;padding:0 .42rem;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-size:.75rem;vertical-align:middle}.folder-grid{gap:.75rem;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}.folder-card{flex-direction:column;align-items:stretch;padding:0;overflow:hidden;background:var(--surface-subtle);transition:border-color .16s ease,transform .16s ease,box-shadow .16s ease}.folder-card:hover{border-color:#1f6feb7a;transform:translateY(-2px);box-shadow:var(--shadow)}.folder-open{flex:1;flex-direction:row;align-items:center;gap:.75rem;width:100%;min-height:104px;padding:1rem}.folder-copy{display:flex;min-width:0;flex:1;flex-direction:column;gap:.18rem}.folder-name{display:-webkit-box;overflow:hidden;font-size:.95rem;line-height:1.35;overflow-wrap:anywhere;-webkit-box-orient:vertical;-webkit-line-clamp:2}.folder-meta{white-space:nowrap}.folder-arrow{color:var(--muted);font-size:1.5rem}.folder-actions{align-items:center;justify-content:flex-end;padding:.48rem .7rem;border-top:1px solid var(--border);border-left:0;background:var(--surface)}.folder-actions button{border-color:transparent;padding:.32rem .55rem;font-size:.78rem}.folder-actions button:hover{border-color:var(--border);background:var(--surface-subtle)}.file-list-header{padding-bottom:.85rem;border-bottom:1px solid var(--border)}.bulk-actions{margin:0;padding:.65rem 0;color:var(--muted);font-size:.86rem}.data-table tbody tr{transition:background .12s ease}.data-table tbody tr:hover{background:var(--surface-subtle)}.data-table td:nth-child(2) a{font-weight:620}.empty-state{display:flex;align-items:center;justify-content:center;gap:1rem;min-height:120px;padding:1rem;color:var(--muted);text-align:left}.empty-state.compact{min-height:92px}.empty-state strong{color:var(--text)}.empty-state p{margin:.2rem 0 0}.empty-file-mark{position:relative;width:34px;height:42px;flex:0 0 auto;border:2px solid var(--border);border-radius:5px}.empty-file-mark:after{content:"";position:absolute;left:7px;right:7px;bottom:10px;height:2px;background:var(--border);box-shadow:0 -7px 0 var(--border)}.badge{display:inline-block;padding:.1rem .45rem;border-radius:999px;border:1px solid var(--border);font-size:.75rem;margin-right:.25rem}.badge-active,.badge-ready,.badge-file{border-color:#2e7d32;color:#2e7d32}.badge-failed,.badge-revoked,.badge-limit_reached{border-color:var(--danger);color:var(--danger)}.muted{color:var(--muted)}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.85em}.simple-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}.simple-list li{display:flex;gap:.75rem;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);padding-bottom:.4rem}.details{display:grid;gap:.5rem;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));margin:0 0 .75rem}.details dt{color:var(--muted);font-size:.8rem}.details dd{margin:0}.stat-grid{display:grid;gap:.6rem;grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}.stat-card{border:1px solid var(--border);border-radius:var(--radius);padding:.75rem}.stat-label,.stat-hint{margin:0;color:var(--muted);font-size:.8rem}.stat-value{margin:.2rem 0;font-size:1.4rem;font-weight:600}.upload-queue-header,.upload-queue-actions{display:flex;align-items:center;gap:.55rem}.upload-queue-header{justify-content:space-between;flex-wrap:wrap;margin-bottom:.8rem}.upload-queue-header h2,.upload-group-note{margin:0}.upload-group-note{margin-top:.2rem;color:var(--muted);font-size:.78rem}.upload-queue-actions{flex-wrap:wrap}.upload-queue ul,.comment-list{list-style:none;margin:0;padding:0}.upload-item{display:flex;gap:.5rem;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);padding:.5rem 0}.upload-item-main{flex:1 1 auto;min-width:0}.upload-progress-bar{display:block;width:100%;height:.72rem;margin-top:.42rem;overflow:hidden;border:0;border-radius:999px;background:#e7edf6;accent-color:var(--primary)}.upload-progress-bar::-webkit-progress-bar{border-radius:999px;background:#e7edf6}.upload-progress-bar::-webkit-progress-value{border-radius:999px;background:linear-gradient(90deg,#1677ff,#4ca4ff)}.upload-progress-bar::-moz-progress-bar{border-radius:999px;background:linear-gradient(90deg,#1677ff,#4ca4ff)}.folder-preparation-progress{margin-bottom:.75rem;padding:.8rem;border:1px solid #b9d4ff;border-radius:var(--radius);background:#f4f8ff}.folder-preparation-progress.has-error{border-color:#efb2b2;background:#fff7f7}.folder-preparation-heading,.folder-preparation-heading>div{display:flex;align-items:center;gap:.6rem}.folder-preparation-heading{justify-content:space-between}.folder-preparation-heading>div{min-width:0;flex-wrap:wrap}.folder-preparation-heading span{color:var(--muted);font-size:.82rem}.upload-name{display:block;font-weight:600;max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.upload-meta,.upload-error{display:block;color:var(--muted);font-size:.82rem}.upload-status-text{display:block;margin-top:.2rem;color:var(--muted);font-size:.78rem}.upload-error{color:var(--danger)}.comment-list li{border-bottom:1px solid var(--border);padding:.5rem 0}.comment-list header{display:flex;gap:.5rem;justify-content:space-between;color:var(--muted);font-size:.8rem}.comment-list p{white-space:pre-wrap;word-break:break-word;margin:.3rem 0 0}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;padding:1rem;z-index:20}.modal{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);max-width:520px;width:100%;max-height:90vh;overflow:auto;padding:1rem}.modal header{display:flex;align-items:center;justify-content:space-between}.modal-actions{display:flex;gap:.5rem;justify-content:flex-end}.toasts{position:fixed;right:1rem;bottom:1rem;display:flex;flex-direction:column;gap:.4rem;z-index:30;max-width:min(90vw,360px)}.toast{display:flex;gap:.5rem;align-items:center;justify-content:space-between;background:var(--surface);border:1px solid var(--border);border-left-width:4px;border-radius:8px;padding:.5rem .6rem;box-shadow:0 6px 18px #0000002e}.toast-success{border-left-color:#2e7d32}.toast-error{border-left-color:var(--danger)}.toast-warning{border-left-color:#ed6c02}.banner{border-radius:8px;padding:.6rem .75rem;display:flex;gap:.5rem;align-items:center;justify-content:space-between;margin:.5rem 0}.banner-error{background:#c628281f;border:1px solid var(--danger)}.spinner{display:flex;align-items:center;gap:.4rem;color:var(--muted)}.spinner-dot{width:10px;height:10px;border-radius:50%;background:var(--accent);animation:pulse 1s infinite ease-in-out}@keyframes pulse{0%,to{opacity:.3}50%{opacity:1}}.boot{padding:2rem;text-align:center;color:var(--muted)}.admin-nav{display:flex;flex-wrap:wrap;gap:.4rem}.admin-nav a{padding:.3rem .6rem;border:1px solid var(--border);border-radius:999px;color:var(--text);font-size:.9rem}.admin-section-header{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-bottom:.8rem;border-bottom:1px solid var(--border)}.admin-section-header h2{margin:0}.admin-section-header p{margin:.3rem 0 0;color:var(--muted);font-size:.85rem}.admin-files-card .toolbar{margin:.8rem 0}.admin-files-card .toolbar input[type=search]{min-width:min(340px,100%)}pre{overflow:auto;max-height:320px;background:#0000000f;padding:.6rem;border-radius:8px;font-size:.8rem}@media(max-width:640px){.app-main{padding:.6rem}.library-header{align-items:stretch;flex-direction:column;padding:1rem}.library-tools{justify-content:stretch}.library-tools>*{flex:1 1 100%}.file-explorer-shell{grid-template-columns:1fr}.directory-sidebar{position:static;max-height:320px}.upload-composer-row,.upload-source-actions{grid-template-columns:1fr}.upload-trust-row{grid-template-columns:1fr 1fr}.folder-panel .folder-panel-header,.file-list-header{align-items:flex-start;flex-direction:column}.directory-location{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.folder-card{flex-direction:column}.folder-actions{justify-content:flex-end;border-top:1px solid var(--border);border-left:0}.upload-item{flex-direction:column;align-items:stretch}.dropzone{padding:1.1rem}.details,.stat-grid{grid-template-columns:1fr 1fr}}@media(min-width:641px)and (max-width:900px){.upload-composer-row{grid-template-columns:1fr}.upload-trust-row{grid-template-columns:1fr 1fr}.library-header{align-items:stretch;flex-direction:column}.library-tools{justify-content:flex-start}.file-explorer-shell{grid-template-columns:210px minmax(0,1fr)}}