:root{--nav:#14283e;--blue:#2867e8;--text:#172d46;--muted:#657b91;--line:#dde6ef;--bg:#f3f6fa;--green:#10725b;--orange:#985b0a}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 "Microsoft YaHei","Segoe UI",sans-serif}button,input,select,textarea{font:inherit}button,.button{cursor:pointer;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:8px;padding:9px 15px;text-decoration:none;display:inline-block}button:hover,.button:hover{border-color:var(--blue)}button:disabled{opacity:.45;cursor:default}button.primary,.button.primary{background:var(--blue);color:#fff;border-color:var(--blue)}button.danger{color:#ad3540}button.small{padding:5px 10px}input,select,textarea{width:100%;padding:10px 12px;border:1px solid #cbd7e2;border-radius:8px;background:#fff;color:var(--text)}input:focus,select:focus,textarea:focus{outline:2px solid #bdd1ff;border-color:var(--blue)}textarea{min-height:90px;resize:vertical}label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}a{color:var(--blue)}h1,h2,h3,p{margin-top:0}h1{font-size:27px;margin-bottom:8px}h2{font-size:20px;margin-bottom:16px}h3{font-size:17px}p{margin-bottom:12px}.muted,small{color:var(--muted)}.login{width:min(450px,calc(100% - 32px));margin:9vh auto;padding:34px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 15px 50px #14283e0b}.eyebrow{letter-spacing:2px;font-size:12px;color:var(--blue);font-weight:700}.field{margin-bottom:17px}.login button{width:100%}.shell{display:grid;grid-template-columns:220px minmax(0,1fr);min-height:100vh}.nav{background:var(--nav);color:#fff;padding:27px 18px;position:sticky;top:0;height:100vh}.brand{font-size:20px;font-weight:700;padding:0 8px 24px}.brand small{display:block;color:#91a8c0;font-size:12px;font-weight:400}.nav button{width:100%;border:0;text-align:left;background:transparent;color:#b7cada;margin:4px 0;padding:12px 14px}.nav button.active{color:#fff;background:#294561}.nav .identity{margin-top:40px;padding:15px 10px;color:#b7cada;font-size:13px}.main{padding:30px 34px;min-width:0;max-width:1700px;width:100%;margin:0 auto}.page-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:22px}.actions{display:flex;gap:9px;flex-wrap:wrap;align-items:center}.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;margin-bottom:20px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px;margin:18px 0}.stat{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px}.stat strong{font-size:28px;display:block;margin-top:6px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.table-wrap{overflow:auto;max-width:100%}table{border-collapse:collapse;width:100%;font-size:14px}th,td{padding:13px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle;white-space:nowrap}th{color:var(--muted);font-weight:600;background:#f7f9fc}td.wrap{white-space:normal;min-width:150px}.pill{display:inline-block;border-radius:30px;padding:3px 10px;font-size:12px;background:#edf3fd;color:#305e9d}.pill.good{background:#e8f6ef;color:var(--green)}.pill.warn{background:#fff2df;color:var(--orange)}.empty{padding:30px;text-align:center;color:var(--muted)}#notice{position:fixed;bottom:24px;right:24px;max-width:min(600px,calc(100% - 48px));background:#14283e;color:#fff;padding:14px 22px;border-radius:10px;z-index:10000;box-shadow:0 8px 24px #0002}.error{color:#ab303b;background:#fff1f2;padding:12px;border-radius:8px}.loading{text-align:center;padding:80px}.class-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.class-card{margin:0;display:flex;flex-direction:column;gap:12px}.class-card .actions{margin-top:auto}.divider{border:0;border-top:1px solid var(--line);margin:22px 0}details summary{cursor:pointer;color:var(--blue);padding:10px 0}.radar{display:flex;align-items:center;justify-content:center;background:#f8faff;border-radius:10px}.radar svg{width:100%;max-width:380px;height:auto}.suggestions li{margin:9px 0}.dialogue{white-space:pre-wrap;overflow-wrap:anywhere;background:#f7f9fc;padding:14px;border-radius:8px;max-height:350px;overflow:auto}.credential{font-family:Consolas,monospace;min-height:180px}.hint{padding:12px 16px;border-radius:8px;background:#edf3fd;color:#375773}.link-row{display:flex;justify-content:space-between;gap:12px;align-items:center}.subhead{color:var(--muted);font-size:14px}.report-meta{display:flex;gap:20px;flex-wrap:wrap}.inline-error{color:#b02c39;min-height:24px;margin-top:12px}@media(max-width:1100px){.main{padding:24px 20px}.shell{grid-template-columns:180px minmax(0,1fr)}.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.grid{grid-template-columns:1fr}}@media(max-width:760px){.shell{display:block}.nav{height:auto;position:static;padding:15px}.brand{padding-bottom:8px}.nav nav{display:flex;flex-wrap:wrap}.nav nav button{width:auto}.nav .identity{margin:8px 0 0;padding:5px}.class-list,.form-grid{grid-template-columns:1fr}.main{padding:20px 14px}.page-head{display:block}.card{padding:17px}.login{margin:6vh auto}}

@media print{body{background:white}.nav,#notice,.page-head button,.page-head .button,form{display:none!important}.shell{display:block}.main{max-width:none;padding:0}.stats{grid-template-columns:repeat(4,1fr)}.card{box-shadow:none}.grid{grid-template-columns:1fr 1fr}.radar svg{max-width:290px}}

[hidden]{display:none!important}

/* Public entry is isolated from the teaching and operations dashboards. */
.public-login{min-height:100vh;background:#070c11;color:#f1f5f9;display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,520px);align-items:center;gap:clamp(40px,8vw,150px);padding:clamp(32px,6vw,100px);margin:0 auto}
.login-intro{max-width:680px}.login-intro h1{font-size:clamp(32px,3.6vw,56px);line-height:1.25;letter-spacing:-1px;margin:26px 0}.login-intro>p:not(.eyebrow){color:#aabfce;font-size:19px;line-height:1.9;margin-bottom:42px}.login-intro .eyebrow{color:#8edaff;letter-spacing:3px;margin-top:72px}.login-back{color:#8edaff;text-decoration:none;font-size:14px}.login-back:hover{text-decoration:underline}
.public-login-card.login{width:100%;margin:0;padding:clamp(26px,3vw,48px);background:#0d151e;border:1px solid #27343f;border-radius:14px;box-shadow:0 24px 80px #0003}.public-login-card h2{font-size:30px;font-weight:600;margin:26px 0 14px}.public-login-card .muted,.public-login-card small{color:#a6b9c9}.public-login-card label{color:#c5d6e2;font-weight:400}.public-login-card input{background:#090f16;border-color:#2e3d4b;color:#f1f5f9;min-height:50px}.public-login-card input:focus{outline:2px solid #4387af;border-color:#85d5ff}.public-login-card .field{margin-bottom:22px}.public-login-card button.primary{background:#24475d;border-color:#3d6177;min-height:50px}.public-login-card button.primary:hover{background:#2d566f}.public-login-card .inline-error{color:#ffb9b9;overflow-wrap:anywhere}.public-login-card .login-password{margin-top:14px;background:transparent;color:#a9d8ef;border-color:#334b5e}
.login-tabs{display:flex;gap:8px;padding:5px;background:#090f16;border:1px solid #2e3d4b;border-radius:10px}.login-tabs button{flex:1;background:transparent;border:1px solid transparent;color:#aabfce;padding:10px 8px}.login-tabs button[aria-pressed=true]{background:#233b4c;border-color:#436780;color:#f1f5f9}.login-tabs button:focus-visible,.login-back:focus-visible{outline:2px solid #85d5ff;outline-offset:3px}
@media(max-width:800px){.public-login{grid-template-columns:1fr;gap:28px;padding:28px 20px}.login-intro{max-width:none}.login-intro .eyebrow{margin-top:30px}.login-intro h1{font-size:32px;margin:18px 0}.login-intro>p:not(.eyebrow){font-size:16px;margin-bottom:16px}.public-login-card.login{max-width:560px;justify-self:center}.login-intro .login-back:last-child{display:none}}