:root{--bg: #f5f6f8;--surface: #ffffff;--border: #e4e7ec;--text: #1c1f24;--text-2: #6b7280;--text-3: #9aa1ab;--accent: #1e6fff;--accent-hover: #0f5fe0;--danger: #e5484d;--radius: 10px;--shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .1);--mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace}@media(prefers-color-scheme:dark){:root{--bg: #0f1115;--surface: #171a21;--border: #262b36;--text: #e8eaee;--text-2: #9aa3b2;--text-3: #6b7280;--accent: #3b82f6;--accent-hover: #5b93f7;--shadow: 0 1px 2px rgba(0, 0, 0, .4)}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:12px;padding:10px 16px;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow)}.nav-btns{display:flex;gap:4px;flex-shrink:0}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border:none;border-radius:8px;background:transparent;color:var(--text-2);font-size:18px;cursor:pointer;transition:background .15s,color .15s}.icon-btn:hover{background:var(--bg);color:var(--text)}.icon-btn:disabled{opacity:.4;cursor:default}.icon-btn.small{width:28px;height:28px;font-size:15px}.breadcrumbs{flex:1;min-width:0;display:flex;align-items:center;overflow-x:auto;white-space:nowrap}.crumb{border:none;background:none;color:var(--text-2);font-size:14px;padding:4px 2px;cursor:pointer;border-radius:6px;max-width:160px;overflow:hidden;text-overflow:ellipsis}.crumb:hover{color:var(--accent)}.crumb.active{color:var(--text);font-weight:600;cursor:default}.crumb-sep{color:var(--text-3);margin:0 4px;font-size:13px}.brand{flex-shrink:0;font-weight:700;font-size:16px;color:var(--accent);cursor:pointer;user-select:none}.app-body{display:flex;align-items:flex-start;justify-content:center;gap:16px;width:100%;max-width:1200px;margin:0 auto;padding:20px 16px 60px}.app-main{flex:1;min-width:0;max-width:960px}.content-wrap{position:relative}.content-wrap.is-loading .table-wrap{opacity:.6;pointer-events:none}.load-bar{position:sticky;top:64px;z-index:5;display:flex;align-items:center;justify-content:center;gap:10px;margin:10px 0;padding:10px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-2);font-size:13px}.load-bar .spin{width:16px;height:16px;border-width:2px}.dirtree{width:230px;flex-shrink:0;position:sticky;top:76px;max-height:calc(100vh - 100px);overflow:auto;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:10px 8px}.dirtree-title{font-size:12px;font-weight:600;color:var(--text-3);padding:4px 8px 8px}.tree-node{display:flex;align-items:center;min-width:0}.tree-children{margin-left:14px;border-left:1px solid var(--border);padding-left:4px}.tree-toggle{border:none;background:none;cursor:pointer;color:var(--text-3);width:20px;height:24px;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;border-radius:4px}.tree-toggle:hover{color:var(--text)}.tree-label{border:none;background:none;cursor:pointer;display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-2);padding:4px 6px;border-radius:6px;min-width:0;flex:1;text-align:left}.tree-label:hover{background:var(--bg);color:var(--text)}.tree-label.current{background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent);font-weight:600}.tree-label .tree-icon{color:var(--text-3);flex-shrink:0}.tree-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tree-lock{color:var(--text-3);flex-shrink:0;font-size:12px}.row-actions{display:inline-flex;gap:2px;opacity:0;transition:opacity .15s}.file-row:hover .row-actions{opacity:1}@media(hover:none){.row-actions{opacity:1}}.toast{position:fixed;left:50%;bottom:36px;transform:translate(-50%);background:#14181eeb;color:#fff;padding:9px 18px;border-radius:999px;font-size:13px;z-index:200;box-shadow:0 4px 16px #00000040;pointer-events:none}.toast-enter-active,.toast-leave-active{transition:opacity .2s,transform .2s}.toast-enter-from,.toast-leave-to{opacity:0;transform:translate(-50%) translateY(8px)}.error-bar{background:color-mix(in srgb,var(--danger) 10%,transparent);color:var(--danger);padding:10px 14px;border-radius:var(--radius);font-size:13px;margin:0 0 14px}.empty-hint,.lock-hint{text-align:center;color:var(--text-3);padding:60px 0;font-size:14px}.table-wrap{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.file-table{width:100%;border-collapse:collapse;table-layout:fixed}.file-table thead th{text-align:left;font-size:12px;font-weight:600;color:var(--text-3);padding:10px 14px;border-bottom:1px solid var(--border);background:var(--bg)}.col-name{width:55%}.col-time{width:25%}.col-size{width:14%;text-align:right}.col-action{width:6%}.th-btn{border:none;background:none;color:inherit;font-size:12px;font-weight:600;padding:0;cursor:pointer;display:inline-flex;align-items:center;gap:4px}.th-btn:hover{color:var(--accent)}.sort-mark{color:var(--accent);font-size:11px}.file-row{cursor:pointer;transition:background .12s}.file-row:hover{background:var(--bg)}.file-row td{padding:9px 14px;border-bottom:1px solid var(--border);font-size:14px}.file-row:last-child td{border-bottom:none}.col-name .cell{display:inline-flex;align-items:center;gap:10px;max-width:100%}.file-icon{display:inline-flex;color:var(--text-2);font-size:18px;flex-shrink:0}.file-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.col-size{text-align:right;color:var(--text-2);font-variant-numeric:tabular-nums}.col-time{color:var(--text-2);font-variant-numeric:tabular-nums}.col-action{text-align:right}.sentinel{text-align:center;padding:14px;color:var(--text-3);font-size:13px}.modal-mask{position:fixed;inset:0;z-index:100;background:#00000073;display:flex;align-items:center;justify-content:center;animation:fade-in .15s ease-out}.modal{background:var(--surface);border-radius:14px;padding:28px 26px;width:320px;max-width:90vw;text-align:center;box-shadow:0 12px 40px #00000040;animation:pop-in .18s ease-out}.modal-icon{font-size:34px;color:var(--accent);display:flex;justify-content:center}.modal h3{margin:12px 0 4px;font-size:17px}.modal-path{margin:0 0 16px;color:var(--text-3);font-size:12px;word-break:break-all}.modal-input{width:100%;padding:10px 12px;font-size:14px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text)}.modal-input:focus{outline:2px solid var(--accent);outline-offset:-1px}.modal-error{color:var(--danger);font-size:12px;margin:8px 0 0}.btn-primary{margin-top:14px;width:100%;padding:10px;font-size:14px;background:var(--accent);color:#fff;border:none;border-radius:8px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:6px;transition:background .15s}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:disabled{opacity:.5;cursor:default}.preview{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.preview-toolbar{display:flex;align-items:center;gap:8px;padding:8px 12px;border-bottom:1px solid var(--border);background:var(--bg)}.preview-name{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}.preview-actions{display:flex;align-items:center;gap:6px;flex-shrink:0}.btn-ghost{padding:6px 12px;font-size:13px;border:1px solid var(--border);background:var(--surface);color:var(--text-2);border-radius:8px;cursor:pointer;display:inline-flex;align-items:center;gap:5px;transition:all .15s}.btn-ghost:hover{color:var(--text);border-color:var(--text-3)}.btn-ghost.active{color:var(--accent);border-color:var(--accent)}.preview-actions .btn-primary{margin-top:0;width:auto;padding:6px 14px}.preview-body{padding:18px;min-height:200px}.preview-loading{color:var(--text-3);text-align:center;padding:40px 0}.pre{margin:0;padding:14px;overflow:auto;font-family:var(--mono);font-size:13px;line-height:1.6;background:var(--bg);border-radius:8px;white-space:pre-wrap;word-break:break-word}.truncated-note{color:var(--text-3)}.md-body{font-size:14px;line-height:1.75}.md-body h1,.md-body h2,.md-body h3{border-bottom:1px solid var(--border);padding-bottom:6px}.md-body code{font-family:var(--mono);font-size:.9em;background:var(--bg);padding:2px 5px;border-radius:4px}.md-body pre code{display:block;padding:12px;overflow:auto}.md-body img{max-width:100%}.md-body blockquote{margin:0;padding-left:12px;border-left:3px solid var(--border);color:var(--text-2)}.md-body table{border-collapse:collapse}.md-body th,.md-body td{border:1px solid var(--border);padding:6px 10px}@keyframes fade-in{0%{opacity:0}}@keyframes pop-in{0%{opacity:0;transform:scale(.96)}}@media(max-width:768px){.dirtree{display:none}.app-body{padding:12px 8px 40px}.app-main{max-width:none}}@media(max-width:640px){.app-header{padding:8px 10px}.col-time{display:none}.col-name{width:66%}.col-size{width:18%}.col-action{width:16%}.preview-body{padding:12px}.preview-actions .btn-ghost{padding:6px 8px}}