:root{--b:#1769ff;--line:#e6eaf0;--muted:#7b8698}*{box-sizing:border-box}body{margin:0;font:14px Arial,"Microsoft YaHei";color:#172033;background:#f6f8fb}button,input,select{font:inherit}#login{min-height:100vh;display:grid;place-items:center}#login form{width:400px;background:#fff;padding:38px;border:1px solid var(--line);border-radius:16px;box-shadow:0 20px 60px #17407b15;text-align:center}#login input{width:100%;height:44px;margin:7px 0;padding:0 12px;border:1px solid var(--line);border-radius:8px}#login button,.head button,#send{background:var(--b);color:#fff;border:0;border-radius:8px;padding:12px 20px}.mark{display:grid;place-items:center;margin:auto;background:var(--b);color:#fff;width:38px;height:38px;border-radius:9px}#login p,#login small,.head p{color:var(--muted)}#app{display:grid;grid-template-columns:240px 1fr;min-height:100vh}aside{background:#fff;border-right:1px solid var(--line);padding:24px 14px}aside h2{padding:0 14px;margin:0 0 38px}aside h2 i{background:var(--b);color:#fff;padding:7px;border-radius:8px;font-style:normal}aside h2 small{display:block;color:var(--muted);font-size:11px;margin:8px 0 0 42px}nav button{width:100%;height:42px;border:0;background:none;text-align:left;padding:0 16px;margin:3px 0;border-radius:8px}nav button.active{background:var(--b);color:#fff}main header{height:72px;background:#fff;border-bottom:1px solid var(--line);padding:26px 30px;color:var(--muted)}#who{float:right}main section{padding:28px 30px}.head{display:flex;align-items:end;margin-bottom:22px}.head h1{margin:0 0 7px}.head p{margin:0}.head button{margin-left:auto}.tools{background:#fff;border:1px solid var(--line);border-radius:11px;padding:13px;display:flex;gap:9px;margin-bottom:17px}.tools input{width:280px}.tools input,.tools select{height:38px;border:1px solid var(--line);border-radius:8px;padding:0 12px}.tools button{border:0;background:#f1f4f8;border-radius:7px;width:38px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px}.card{background:#fff;border:1px solid var(--line);border-radius:11px;padding:10px}.preview{height:155px;background:#f2f4f7;border-radius:8px;display:grid;place-items:center;overflow:hidden;font-size:38px;color:#7790b4}.preview img{width:100%;height:100%;object-fit:cover}.meta{padding:12px 2px}.meta b{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.meta small{color:var(--muted)}.actions{display:flex;border-top:1px solid #eef0f3}.actions button{flex:1;border:0;background:none;padding:9px 2px;color:#657186}.list{background:#fff;border:1px solid var(--line);border-radius:11px}.row{display:grid;grid-template-columns:1fr 120px 150px 240px;align-items:center;padding:14px 18px;border-top:1px solid var(--line)}.empty{text-align:center;background:#fff;border:1px dashed #ccd4df;border-radius:12px;padding:80px;color:var(--muted)}dialog{border:0;border-radius:14px;padding:25px;width:520px}dialog::backdrop{background:#10182866}dialog label{height:170px;border:1px dashed #aac0df;display:grid;place-items:center;margin:20px 0;background:#f8fbff}dialog label input{max-width:250px}@media(max-width:800px){#app{grid-template-columns:76px 1fr}aside h2{font-size:0}aside h2 small{display:none}nav button{font-size:0;text-align:center}nav button:first-letter{font-size:18px}.grid{grid-template-columns:1fr 1fr}}