:root{--nav:#071b43;--blue:#1767d8;--cyan:#42b7ff;--bg:#f2f6fc;--ink:#14213d;--muted:#71809b;--line:#dfe7f2;--card:#fff;--success:#13996c;--warning:#e79b23;--danger:#dc4c64}
*{box-sizing:border-box}body{margin:0;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;color:var(--ink);background:var(--bg)}a{text-decoration:none;color:inherit}button,input,textarea,select{font:inherit}.layout{min-height:100vh;display:grid;grid-template-columns:248px 1fr}.sidebar{position:sticky;top:0;height:100vh;background:linear-gradient(180deg,#071a42,#0b2c64);color:#dfeaff;padding:26px 18px}.brand{display:flex;gap:12px;align-items:center;padding:4px 10px 28px}.brand-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,#5bc6ff,#1767d8);display:grid;place-items:center;font-weight:800}.brand strong{display:block;color:white}.brand small{color:#86a9dc}.nav a{display:flex;gap:12px;padding:12px 14px;margin:5px 0;border-radius:10px;color:#afc4e5}.nav a:hover,.nav a.active{background:#ffffff18;color:white}.sidebar-foot{position:absolute;bottom:22px;left:18px;right:18px}.main{min-width:0}.topbar{height:72px;padding:0 34px;background:white;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.content{padding:30px 34px 60px;max-width:1500px}.page-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:24px}.page-head h1{margin:0;font-size:27px}.page-head p{margin:7px 0 0;color:var(--muted)}.grid{display:grid;gap:20px}.stats{grid-template-columns:repeat(4,1fr)}.stat,.card{background:var(--card);border:1px solid #e7edf6;border-radius:16px;box-shadow:0 7px 24px #174f9410}.stat{padding:22px}.stat .value{font-size:30px;font-weight:800;color:var(--blue);margin:9px 0 2px}.stat small,.muted{color:var(--muted)}.two{grid-template-columns:1.3fr 1fr}.card{padding:24px}.card h2{font-size:18px;margin:0 0 18px}.btn{border:0;border-radius:9px;padding:10px 17px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:7px;background:#e9f1fc;color:#1655a9;font-weight:600}.btn.primary{background:linear-gradient(135deg,#1b75e8,#1756bc);color:white}.btn.success{background:var(--success);color:white}.btn.danger{background:#fff0f2;color:var(--danger)}.btn.light{background:white;border:1px solid var(--line)}.btn:disabled{opacity:.5;cursor:not-allowed}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse;white-space:nowrap}.table th{font-size:13px;color:var(--muted);font-weight:600;background:#f7f9fc}.table th,.table td{text-align:left;padding:13px 12px;border-bottom:1px solid #edf1f6}.badge{display:inline-block;border-radius:999px;padding:5px 10px;font-size:12px;background:#eaf2ff;color:#1767d8}.badge.success{background:#e5f8f0;color:#13805d}.badge.warn{background:#fff5df;color:#9b6819}.badge.danger{background:#ffecee;color:#bd3e54}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px}.field label{display:block;font-size:13px;font-weight:650;margin-bottom:7px}.field input,.field textarea,.field select{width:100%;border:1px solid #d9e2ef;border-radius:9px;padding:11px 12px;background:white;outline:none}.field input:focus,.field textarea:focus,.field select:focus{border-color:#4a95ee;box-shadow:0 0 0 3px #2781e51c}.field.full{grid-column:1/-1}.flash{padding:13px 16px;border-radius:10px;margin-bottom:18px}.flash.success{background:#e6f7f1;color:#117553}.flash.error{background:#ffedf0;color:#ad344b}.chart{min-height:250px}.bars .bar-row{display:grid;grid-template-columns:100px 1fr 62px;align-items:center;gap:12px;margin:15px 0}.track{height:9px;background:#eaf0f7;border-radius:9px;overflow:hidden}.fill{height:100%;border-radius:9px}.radar-wrap{display:grid;grid-template-columns:280px 1fr;align-items:center}.radar{width:270px;height:250px}.score-big{font-size:52px;font-weight:800;color:var(--blue)}.file-box{border:1.5px dashed #b8cae2;border-radius:12px;padding:18px;background:#f9fbfe}.file-list{display:grid;gap:9px;margin-top:12px}.file-item{display:flex;justify-content:space-between;align-items:center;background:white;border:1px solid var(--line);padding:10px 12px;border-radius:9px}.progress-check{padding:12px 14px;border-left:3px solid var(--blue);background:#f5f9ff;margin:8px 0}.login-page{min-height:100vh;background:radial-gradient(circle at 15% 20%,#1c75e855,transparent 33%),radial-gradient(circle at 85% 80%,#24c5ea33,transparent 27%),linear-gradient(135deg,#041632,#0a3471);display:grid;place-items:center;padding:24px}.login-shell{width:min(1000px,100%);min-height:590px;background:#ffffff0c;border:1px solid #ffffff25;border-radius:24px;display:grid;grid-template-columns:1.15fr .85fr;overflow:hidden;box-shadow:0 30px 80px #0005;backdrop-filter:blur(15px)}.login-hero{color:white;padding:68px;display:flex;flex-direction:column;justify-content:center}.login-hero h1{font-size:42px;margin:14px 0}.login-hero p{color:#bad4f9;line-height:1.9}.login-panel{background:white;padding:58px 50px;display:flex;flex-direction:column;justify-content:center}.role-switch{display:grid;grid-template-columns:1fr 1fr;background:#edf3fa;border-radius:10px;padding:4px;margin-bottom:26px}.role-switch label{text-align:center;padding:10px;border-radius:8px;cursor:pointer}.role-switch input{display:none}.role-switch label:has(input:checked){background:#1767d8;color:white;box-shadow:0 4px 12px #1767d844}.mobile-toggle{display:none}.empty{text-align:center;color:var(--muted);padding:46px 20px}.grade-card{background:linear-gradient(135deg,#0c3673,#1975df);color:white}.grade-card .muted{color:#c4d9f6}@media(max-width:900px){.layout{grid-template-columns:1fr}.sidebar{position:fixed;z-index:20;transform:translateX(-100%);transition:.25s;width:248px}.sidebar.open{transform:none}.mobile-toggle{display:inline-flex}.stats,.two{grid-template-columns:1fr 1fr}.radar-wrap{grid-template-columns:1fr}.content{padding:22px}.topbar{padding:0 20px}}@media(max-width:620px){.stats,.two,.form-grid{grid-template-columns:1fr}.login-shell{grid-template-columns:1fr}.login-hero{display:none}.login-panel{padding:42px 26px}.content{padding:18px}.page-head{align-items:flex-start;gap:12px}.radar{width:100%}}