*{box-sizing:border-box}body{margin:0;background:#f5f7fb;color:#172033;font:15px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:inherit}.top{position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;align-items:center;padding:16px 5vw;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid #e5e9f2}.brand{font-weight:800;text-decoration:none}.top nav{display:flex;gap:18px;align-items:center;flex-wrap:wrap}.top nav a{text-decoration:none;color:#536078}.container{max-width:1280px;margin:0 auto;padding:42px 24px}.hero{padding:72px 56px;background:linear-gradient(135deg,#fff,#eef3ff);border:1px solid #e1e7f2;border-radius:28px;box-shadow:0 18px 50px rgba(32,55,95,.08)}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:#5b67d8}.hero h1{max-width:820px;font-size:clamp(34px,5vw,62px);line-height:1.05;margin:14px 0}.hero p{max-width:760px;font-size:18px;color:#5d6779}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid #d7ddea;background:#fff;color:#1b2537;text-decoration:none;border-radius:11px;padding:10px 15px;cursor:pointer;font:inherit}.btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(30,50,90,.08)}.btn.primary{background:#3e4fd0;color:#fff;border-color:#3e4fd0}.btn.ghost{background:transparent}.btn.small{padding:7px 10px;font-size:13px}.grid3,.statgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:18px}.statgrid{grid-template-columns:repeat(5,1fr)}.card{background:#fff;border:1px solid #e2e7f0;border-radius:18px;padding:22px;box-shadow:0 8px 28px rgba(35,50,80,.05)}.grid3 .card span{display:block;color:#667085;margin-top:7px}.stat{padding:18px;border:1px solid #e2e7f0;background:#fff;border-radius:16px}.stat span{display:block;color:#6a7385;font-size:13px}.stat b{font-size:28px}.form{display:grid;gap:14px;max-width:760px}.form label{display:grid;gap:6px;font-weight:700}.form small{font-weight:400;color:#697386}.form input,.form select,.form textarea,.filters input,.filters select,.inline input{width:100%;padding:11px 12px;border:1px solid #d7ddea;border-radius:10px;background:#fff;font:inherit;color:inherit}.form textarea{resize:vertical}.narrow{max-width:520px;margin:auto}.alert{padding:12px 14px;border-radius:10px;margin:12px 0}.danger{background:#fff0f0;border:1px solid #f2bcbc;color:#8f1d1d}.success{max-width:700px;margin:auto;text-align:center}.code{font:800 30px ui-monospace,monospace;letter-spacing:.08em;padding:18px;border:2px dashed #aeb8d6;border-radius:14px;background:#f8f9ff;margin:18px 0}.muted{color:#6b7280}.section-head{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:16px}.section-head h1,.section-head h2{margin:0}.table-wrap{overflow:auto}.table-wrap table{width:100%;border-collapse:collapse}.table-wrap th,.table-wrap td{text-align:left;padding:12px;border-bottom:1px solid #edf0f5;vertical-align:top}.table-wrap th{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:#778196}.table-wrap small{display:block;color:#788196}.badge{display:inline-block;padding:4px 8px;border-radius:999px;background:#edf0ff;color:#3d4ebd;font-size:11px;font-weight:800}.badge.high{background:#fff0dd;color:#9a5b00}.overdue{color:#b42318;font-weight:800}.filters{display:grid;grid-template-columns:2fr 1fr 1fr auto;gap:10px;margin-bottom:18px}.inline{display:flex;gap:8px}.workspace .split{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(320px,.8fr);gap:18px}.workspace .split.wide{grid-template-columns:minmax(0,1.35fr) minmax(360px,.85fr)}.messages{height:52vh;min-height:380px;overflow:auto;padding:12px;background:#f7f8fc;border:1px solid #e6eaf2;border-radius:14px;display:flex;flex-direction:column;gap:10px}.msg{display:flex;justify-content:flex-start}.msg.mine{justify-content:flex-end}.msgbody{max-width:78%;background:#fff;border:1px solid #e1e5ee;border-radius:14px;padding:10px 12px}.mine .msgbody{background:#edf1ff;border-color:#d7ddff}.msgbody b{font-size:12px}.msgbody small{display:block;color:#7c8595;margin-top:5px}.composer{display:grid;grid-template-columns:1fr auto;gap:10px;margin-top:12px}.composer textarea{min-height:52px;padding:11px;border:1px solid #d7ddea;border-radius:11px;resize:vertical;font:inherit}.composer input[type=file]{grid-column:1/-1}.ticketmeta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.workspace-side{position:sticky;top:86px;height:max-content}.workspace-side hr{border:0;border-top:1px solid #e8ebf2;margin:22px 0}.dochead{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:10px}.docviewer{border:1px solid #e1e5ee;border-radius:12px;overflow:auto;background:#fbfcfe;max-height:56vh}.docviewer pre{white-space:pre-wrap;margin:0;padding:18px;font:14px/1.7 ui-monospace,SFMono-Regular,Menlo,monospace;user-select:text}.annotationbar{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}.annotationbar button{border:1px solid #d7ddea;background:#fff;border-radius:9px;padding:7px 9px;cursor:pointer}.annotation-list{display:grid;gap:8px}.annotation-item{padding:10px;border:1px solid #e2e6ef;border-radius:10px;background:#fff}.annotation-item .type{font-size:11px;font-weight:800;color:#5865d6}.info{margin-top:18px;padding:12px;background:#f7f8fc;border-radius:10px;color:#5f6879}.compact{margin-top:14px}.progress{height:9px;background:#e9edf5;border-radius:99px;overflow:hidden}.progress i{display:block;height:100%;background:#5665d9}.bars{display:grid;gap:10px}.barrow{display:grid;grid-template-columns:180px 1fr 40px;gap:10px;align-items:center}.barrow>div{height:10px;background:#edf0f5;border-radius:99px;overflow:hidden}.barrow i{display:block;height:100%;background:#5d6ad8}.notice{padding:14px;border:1px solid #e2e6ef;border-radius:12px;margin-bottom:8px}.notice.unread{background:#f4f6ff;border-color:#cdd4ff}.empty{text-align:center;padding:40px;color:#7a8496}footer{text-align:center;color:#8790a0;padding:30px}.student .messages{height:58vh}@media(max-width:900px){.grid3,.statgrid{grid-template-columns:1fr 1fr}.workspace .split,.workspace .split.wide{grid-template-columns:1fr}.workspace-side{position:static}.filters{grid-template-columns:1fr 1fr}.hero{padding:40px 24px}}@media(max-width:600px){.top{align-items:flex-start;gap:12px;flex-direction:column}.top nav{gap:10px}.container{padding:22px 14px}.grid3,.statgrid,.filters{grid-template-columns:1fr}.composer{grid-template-columns:1fr}.barrow{grid-template-columns:1fr}.msgbody{max-width:90%}}