[hidden]{display:none!important}
:root{--ink:#26362e;--muted:#718077;--paper:#f6f5f0;--card:#fffdfa;--line:#d8ded8;--green:#236247;--red:#aa463e}*{box-sizing:border-box}body{margin:0;color:var(--ink);font:14px -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--paper)}button,input,select,textarea{font:inherit}button{cursor:pointer}.login{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at 15% 15%,#d9e9df,transparent 32%),var(--paper)}.login-box{width:min(390px,90vw);background:var(--card);border:1px solid var(--line);padding:34px;border-radius:18px;box-shadow:0 18px 56px #1b352014}.eyebrow{font-size:11px;letter-spacing:.12em;color:var(--green);font-weight:700}.login h1,header h1,h2{font-family:Georgia,"Songti SC",serif}.login h1{margin:9px 0;font-size:29px}.login p{color:var(--muted);margin:0 0 20px}.login input,.login button{width:100%;padding:11px 12px;border-radius:8px}.login input{border:1px solid var(--line);margin-bottom:9px}.login button,.add{border:0;background:var(--green);color:white;font-weight:700}.error{min-height:18px;color:var(--red);margin-top:10px;font-size:12px}header{padding:18px max(24px,calc((100vw - 1240px)/2));display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:#fffdfa}header h1{margin:4px 0 0;font-size:24px}nav{display:flex;gap:7px;align-items:center}.nav,.plain{padding:8px 10px;border-radius:7px;border:1px solid transparent;background:transparent;color:var(--muted)}.nav.active{background:#e4f0e8;color:var(--green);font-weight:700}.plain{border-color:var(--line);color:var(--ink)}main{max-width:1240px;margin:26px auto;padding:0 24px}.controls{display:flex;align-items:center;gap:12px;margin-bottom:18px}.controls input{width:min(400px,100%);padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:white}.controls span{color:var(--muted);margin-left:auto}.controls .add{padding:10px 13px;border-radius:8px}.direction{margin:0 0 26px}.direction-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}.badge{border-radius:999px;padding:5px 10px;background:#e4f0e8;color:var(--green);font-weight:700}.direction-head small{color:var(--muted)}.teacher-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}.teacher{border:1px solid var(--line);border-radius:12px;background:var(--card);overflow:hidden}.advisor{padding:13px 14px;background:#f0f5ef;border-bottom:1px solid var(--line)}.role{font-size:11px;color:var(--muted)}.advisor strong{display:block;margin-top:3px;font-size:16px}.student{padding:11px 14px;border-bottom:1px solid #eef1ed;cursor:pointer}.student:last-child{border:0}.student:hover,.card:hover{background:#f5faf6}.student .name{font-weight:700}.meta,.note{font-size:12px;color:var(--muted);margin-top:3px}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(235px,1fr));gap:12px}.card{min-height:125px;padding:16px;background:var(--card);border:1px solid var(--line);border-radius:12px;cursor:pointer}.card .name{font-size:17px;font-weight:700}.card .major{color:var(--green);font-weight:700;margin-top:7px}dialog{border:0;border-radius:14px;padding:0;width:min(470px,92vw);box-shadow:0 22px 70px #0004}dialog::backdrop{background:#18312570}dialog form{padding:22px;background:var(--card)}.dialog-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.dialog-head h2{margin:0}.icon{border:0;background:transparent;font-size:28px;color:var(--muted)}label{display:block;color:var(--muted);font-size:12px;margin-top:11px}label input,label select,label textarea{display:block;width:100%;margin-top:4px;padding:9px 10px;border:1px solid var(--line);border-radius:7px;color:var(--ink);background:#fff}textarea{min-height:76px;resize:vertical}.actions{margin-top:20px;display:flex;justify-content:flex-end;gap:8px}.actions button{padding:9px 14px;border-radius:7px}.delete{margin-right:auto;color:var(--red);border:1px solid #e6b8b4;background:white}@media(max-width:720px){header{align-items:flex-start;gap:14px;flex-direction:column}nav{flex-wrap:wrap}.controls{flex-wrap:wrap}.controls span{margin-left:0}.controls input{width:100%}main{padding:0 15px}}