:root{--ink:#18243a;--muted:#53627a;--line:#e3e9f1;--blue:#315fe8;--bg:#f5f7fb}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 "Segoe UI","Microsoft YaHei",sans-serif}
button,input,textarea{font:inherit}
button{cursor:pointer;white-space:nowrap}
button:focus-visible,input:focus-visible,textarea:focus-visible,.content:focus-visible{outline:3px solid #94b3f5;outline-offset:2px}
button:disabled{opacity:.6;cursor:wait}
.shell{max-width:1460px;margin:0 auto;padding:32px 40px}
.top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.brand{display:flex;align-items:center;gap:12px}
.icon{background:var(--blue);color:#fff;width:42px;height:42px;display:grid;place-items:center;border-radius:10px;font-size:27px;flex-shrink:0}
h1{margin:0;font-size:26px;font-weight:650;letter-spacing:-.5px}
.top-right{display:flex;align-items:center;gap:18px;color:var(--muted)}
.subtle{border:0;background:transparent;color:var(--muted);padding:7px 10px}
.subtle:hover{color:var(--blue)}
.btn{border:1px solid var(--line);border-radius:7px;background:#fff;padding:9px 16px;color:var(--ink)}
.primary{color:#fff;background:var(--blue);border-color:var(--blue)}
.primary:hover:enabled{background:#214dce}
.workspace{display:grid;gap:24px}
.composer{background:#fff;border:1px solid var(--line);border-radius:11px;padding:24px}
.compose-title{margin-bottom:16px}
.compose-title h2{margin:0;font-size:17px}
.compose-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px}
textarea{display:block;resize:vertical;width:100%;min-height:112px;border:1px solid #d8e1ed;border-radius:7px;padding:13px 14px;background:#fcfdff;color:var(--ink)}
textarea::placeholder{color:var(--muted)}
.compose-bottom{display:flex;justify-content:flex-end;align-items:center;gap:12px;margin-top:12px}
.drop{border:1px dashed #afc0df;border-radius:7px;min-height:112px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;background:#f9fbff;padding:14px;text-align:center}
.drop.drag{border-color:var(--blue);background:#edf3ff}
.drop svg{color:var(--blue)}
.drop button{color:var(--blue);background:transparent;border:0;padding:0}
.muted{color:var(--muted)}
.panel{background:#fff;border:1px solid var(--line);border-radius:11px;overflow:hidden;min-width:0}
.listbar{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--line);min-height:76px}
.list-title{display:flex;align-items:center;gap:12px}
.list-title h2{font-size:18px;font-weight:600;margin:0}
.count{font-size:14px;background:#eef2f8;border-radius:5px;color:var(--muted);padding:2px 8px}
.tools{display:flex;align-items:center;gap:12px}
.search{width:220px;padding:9px 12px;border:1px solid var(--line);border-radius:7px;color:var(--ink);background:#fcfdff}
.table-wrap{overflow:auto}
table{border-collapse:collapse;width:100%;table-layout:fixed;min-width:760px}
th{font-weight:500;text-align:left;color:var(--muted);background:#fafbfe;height:45px;border-bottom:1px solid var(--line)}
th,td{padding:16px 24px}
td{border-bottom:1px solid #edf0f5;vertical-align:middle;height:84px}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:#fbfcff}
.type-cell{width:110px}
.date-cell{width:235px}
.ops-cell{width:160px}
.file-size{color:var(--muted);margin-top:4px;font-size:14px}
.badge{display:inline-flex;align-items:center;border-radius:5px;padding:4px 9px;color:#315fe8;background:#eef3ff;font-size:14px}
.badge.file{background:#e9f6f2;color:#147a62}
.content{overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;word-break:break-word;white-space:pre-wrap}
.content[role="button"]{cursor:pointer}
.date{color:#53627a;font-variant-numeric:tabular-nums;white-space:nowrap}
.ops{display:flex;gap:14px;align-items:center}
.action{color:var(--blue);border:0;background:none;padding:4px 0}
.delete{border:0;background:none;color:#53627a;padding:4px}
.delete:hover{color:#ba2630}
.foot{display:flex;justify-content:space-between;padding:15px 24px;background:#fcfdff;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
.empty{text-align:center;padding:60px 20px;color:var(--muted)}
.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);background:#18243a;color:#fff;padding:12px 24px;border-radius:9px;box-shadow:0 10px 30px rgba(0,0,0,.12);z-index:20;display:none;max-width:90vw}
.toast.show{display:block}
dialog{border:1px solid var(--line);border-radius:12px;width:660px;max-width:90vw;padding:0;box-shadow:0 20px 80px rgba(0,0,0,.20)}
dialog::backdrop{background:#16253b55}
.dialog-head{padding:20px 24px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);font-size:18px;font-weight:600}
.dialog-text{white-space:pre-wrap;word-break:break-word;max-height:55vh;overflow:auto;padding:24px;margin:0;user-select:text}
.dialog-foot{padding:16px 24px;display:flex;justify-content:flex-end;gap:12px;border-top:1px solid var(--line)}
.login-shell{width:420px;max-width:90vw;margin:15vh auto;padding:32px;background:#fff;border:1px solid var(--line);border-radius:11px}
.login-form{margin-top:30px;display:grid;gap:12px}
.login-form label{font-weight:600}
.login-form input{border:1px solid #d8e1ed;border-radius:7px;padding:11px 12px;width:100%}
.login-form .btn{width:100%;margin-top:4px}
.error{color:#b32130;margin:0;overflow-wrap:anywhere}
.error:empty{display:none}
.copy-helper{position:fixed;left:-9999px;top:0}