:root{font-family:Inter,PingFang SC,Microsoft YaHei,Arial,sans-serif;color:#1e293b;background:#eef2f3}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button{border:0;background:#246b5d;color:#fff;border-radius:6px;padding:10px 14px;cursor:pointer}input,select,textarea{width:100%;border:1px solid #cbd5d9;border-radius:6px;padding:10px;background:#fff}textarea{min-height:92px}.login{min-height:100vh;background:linear-gradient(120deg,#246b5dd1,#1e293bb8),url(/campus.webp);background-size:cover;display:grid;place-items:center;padding:22px}.loginPanel{width:min(520px,100%);background:#fff;border-radius:8px;padding:30px;box-shadow:0 20px 50px #0000002e}.brand{display:flex;gap:12px;align-items:center;font-size:24px;font-weight:800}.login form{display:grid;gap:14px;margin:24px 0}.demo,.error,.ok{padding:10px;border-radius:6px;background:#eef7f4}.error{background:#fff1f2;color:#be123c}.ok{color:#047857}.shell{min-height:100vh;display:grid;grid-template-columns:250px 1fr}aside{background:#143832;color:#fff;padding:18px;display:flex;flex-direction:column;gap:8px}aside button{display:flex;align-items:center;gap:10px;text-align:left;background:transparent;color:#dce8e5}aside button.active,aside button:hover{background:#246b5d}.logo{display:flex;align-items:center;gap:10px;font-weight:800;margin-bottom:18px}main{padding:22px;overflow:auto}header{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:20px}header div{display:flex;gap:12px;align-items:center}header span{background:#dbeafe;color:#1d4ed8;padding:4px 8px;border-radius:6px}header small{max-width:760px;color:#64748b}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.forms{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.list{display:grid;gap:14px}.panel,.metric{background:#fff;border:1px solid #d9e2e1;border-radius:8px;padding:18px}.wide{grid-column:span 2}.panel h1,.panel h2{margin:0 0 12px;font-size:22px}.panel p{line-height:1.7}.metric span{color:#64748b}.metric strong{display:block;font-size:34px;margin-top:10px}.actions{display:flex;gap:12px;flex-wrap:wrap}.chart{grid-column:span 2;height:320px;background:#fff;border:1px solid #d9e2e1;border-radius:8px;padding:18px}form.panel{display:grid;gap:12px}svg{width:20px;height:20px;flex:0 0 auto}.simpleChart{display:grid;align-content:center;gap:12px}.barRow{display:grid;grid-template-columns:80px 1fr 44px;align-items:center;gap:10px}.barRow span{color:#64748b;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.barRow div{height:14px;background:#e2e8f0;border-radius:999px;overflow:hidden}.barRow i{display:block;height:100%;background:#246b5d;border-radius:999px}.barRow b{text-align:right}.lineChart{width:100%;height:100%}.lineChart polyline{fill:none;stroke:#246b5d;stroke-width:4;vector-effect:non-scaling-stroke}.muted{color:#64748b;place-self:center}@media(max-width:900px){.shell{grid-template-columns:1fr}aside{position:sticky;top:0;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:6px}.logo{grid-column:1/-1}.grid,.forms{grid-template-columns:1fr}.wide,.chart{grid-column:auto}header{display:block}main{padding:14px}.loginPanel{padding:22px}.brand{font-size:20px}}@media(max-width:640px){.login{background:linear-gradient(135deg,#246b5d,#1e293b)}}.mobileNav,.mobileMore{display:none}.articleTitle,.articleMeta{display:flex;justify-content:space-between;align-items:center;gap:12px}.articleTitle h2{margin-bottom:5px}.articleMeta{color:#64748b;font-size:13px;margin-top:12px}.iconButton{width:40px;height:40px;padding:8px;display:grid;place-items:center;background:#eef7f4;color:#246b5d}.iconButton svg{width:20px;height:20px}.articleMedia{display:block;width:100%;max-height:360px;margin:14px 0;border-radius:8px;background:#0f2521}.notification{cursor:pointer}.notification.read{opacity:.72}.notification h2{margin-bottom:5px}.recoveryLink{width:100%;color:#246b5d;background:transparent;padding:6px}.recoveryForm{display:grid;gap:10px;margin:12px 0;padding-top:12px;border-top:1px solid #d9e2e1}.courseProgressPanel{display:flex;align-items:center;gap:12px}.courseProgressPanel strong{font-size:30px;color:#246b5d}.courseProgressPanel span{color:#64748b}.dateFilterInputs{display:flex;align-items:end;gap:12px;flex-wrap:wrap}.dateFilterInputs label{flex:1;min-width:150px}.aiResult{white-space:pre-wrap}.dateFilterForm{grid-column:span 2}@media(max-width:900px){body{background:#f4f7f6}.shell:has(.studentMain)>aside{display:none}.studentMain{padding:14px 14px calc(82px + env(safe-area-inset-bottom))}.studentMain header{padding:4px 2px 8px;margin-bottom:10px}.studentMain header small{display:none}.studentMain header div{width:100%;justify-content:space-between}.studentMain .panel,.studentMain .metric,.studentMain .chart{border-radius:12px;padding:16px;box-shadow:0 2px 10px #1438320d}.studentMain .panel h1,.studentMain .panel h2{font-size:18px}.studentMain .grid,.studentMain .forms{gap:12px}.mobileNav{position:fixed;display:flex;z-index:20;left:0;right:0;bottom:0;padding:8px 6px calc(8px + env(safe-area-inset-bottom));background:#fffffff7;border-top:1px solid #d9e2e1;box-shadow:0 -4px 18px #1438321a;justify-content:space-around}.mobileNav button{background:transparent;color:#64748b;padding:4px 5px;display:flex;flex:1;min-width:0;flex-direction:column;align-items:center;gap:3px;font-size:11px}.mobileNav button svg{width:20px;height:20px}.mobileNav button.active{color:#246b5d;font-weight:700}.mobileMore{position:fixed;display:grid;grid-template-columns:repeat(4,1fr);z-index:19;left:10px;right:10px;bottom:76px;padding:10px;background:#fff;border:1px solid #d9e2e1;border-radius:12px;box-shadow:0 8px 24px #14383229}.mobileMore button{background:transparent;color:#475569;padding:9px 4px;display:flex;flex-direction:column;align-items:center;gap:4px;font-size:12px}.mobileMore button.active{color:#246b5d;font-weight:700}}button.ghost{background:#e2e8f0;color:#1e293b}button.small{padding:4px 8px;font-size:13px;margin-left:8px}.consent .loginPanel{max-width:680px}