:root{--navy:#102e45;--navy2:#1c4961;--gold:#d9ad59;--bg:#f3f6fa;--ink:#133047;--muted:#688093;--line:#e2e9f0;--red:#9f3232}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--bg);font:15px/1.7 system-ui,-apple-system,"Segoe UI",Tahoma,sans-serif}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button{cursor:pointer}h1{font-size:25px;line-height:1.35}h2{font-size:19px}h3{font-size:16px}.shell{display:grid;grid-template-columns:248px minmax(0,1fr);min-height:100vh}.side{background:var(--navy);color:#c8d8e4;display:flex;flex-direction:column;min-height:100vh;position:sticky;top:0;height:100vh;padding:22px 13px}.brand{display:flex;gap:12px;align-items:center;color:#fff;padding:8px 12px 24px;border-bottom:1px solid #29475a}.brand b{font-size:28px;display:block;line-height:1.2}.brand 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var(--line);border-radius:16px;margin-bottom:20px;padding:24px;min-width:0}.panel h2:first-child{margin-top:0}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:16px 0 22px}.btn{display:inline-flex;justify-content:center;align-items:center;gap:7px;border:1px solid var(--line);padding:9px 18px;border-radius:9px;font-weight:650;font-size:14px;background:#fff;color:var(--navy)}.btn:hover{filter:brightness(.97)}.btn.gold{background:var(--gold);color:var(--navy);border-color:var(--gold)}.btn.light{background:#f7fafc}.btn.small{padding:5px 10px;font-size:12px}.btn.full{width:100%}.btn:disabled{opacity:.45;cursor:not-allowed}label{display:block;font-weight:620;margin:14px 0 7px}label.inline{display:flex;align-items:center;gap:9px;font-weight:450;margin:10px 0}.inline input{width:auto}input:not([type=checkbox]):not([type=radio]):not([type=file]),textarea,select{display:block;width:100%;border:1px 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.btn{margin-right:auto}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;text-align:right}th,td{border-bottom:1px solid var(--line);padding:12px 10px;white-space:nowrap}th{font-size:13px;background:#f6f9fb;color:#687f93}.empty{color:var(--muted);padding:25px;text-align:center}.auth-main{min-height:100vh;display:grid;place-items:center;background:linear-gradient(130deg,var(--navy),#27556d)}.auth-main>.content{width:100%;max-width:500px;padding:20px}.auth-card{background:#fff;border-radius:18px;padding:32px;box-shadow:0 20px 70px #05182550}.auth-card h1{margin-bottom:4px}.auth-logo{color:var(--navy);font-size:30px}.auth-logo:first-letter{color:var(--gold)}.auth-card .btn{margin-top:22px}.exam-question{padding:0 0 6px}.question-meta{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:15px}.question-meta span{font-size:12px;color:var(--muted)}.rich{white-space:normal;overflow-wrap:anywhere}.rich img{max-width:100%;height:auto;object-fit:contain;max-height:410px}.rich table{max-width:100%}.choices{display:grid;gap:8px;margin-top:18px}.choice{display:flex;align-items:flex-start;gap:11px;padding:13px;border:1px solid #dbe4eb;border-radius:10px;margin:0;cursor:pointer}.choice:has(input:checked){border-color:#c59a4e;background:#fffaf0}.choice input{margin-top:6px}.choice b{background:#eef3f7;width:28px;min-width:28px;text-align:center;border-radius:6px}.choice.correct{border:1px solid #b8e1c4;background:#f0faf2}.choice.chosen:not(.correct){border:1px solid #e9c1c1}.exam-timer{position:sticky;top:8px;z-index:2;width:max-content;max-width:100%;background:var(--navy);color:white;font-weight:700;border-radius:10px;padding:9px 19px;margin:14px 0}.option-edit{background:#f6f9fa;border:1px solid var(--line);padding:15px;border-radius:9px;margin:12px 0}.option-edit label{font-size:13px}.preview-panel{margin-bottom:14px}.student-review{margin:14px 0;padding:15px;border:1px solid #e0e9ef;border-radius:8px}.correct{color:#196a32}.success{border-top:4px solid #25805a}@media(max-width:1100px){.stats{grid-template-columns:repeat(2,1fr)}.shortcuts{grid-template-columns:repeat(2,1fr)}}@media(max-width:780px){.shell{display:block}.side{position:relative;height:auto;min-height:0;padding:10px}.brand{padding:6px 10px 9px}.brand b{font-size:21px}.side nav{margin:9px 0;display:flex;overflow-x:auto;gap:6px}.side-foot{display:none}.nav-link{white-space:nowrap;padding:6px 10px;font-size:12px}.top{padding:10px 14px;height:auto;flex-wrap:wrap;gap:7px}.account{font-size:11px}.content{padding:18px 13px 60px}.grid2{grid-template-columns:1fr}.stats{gap:9px}.stats>div{padding:13px}.shortcuts{gap:9px}.shortcut{padding:15px}.panel{padding:15px}.hero{padding:22px;min-height:110px}.hero h1{font-size:20px}.hero p{font-size:12px}.gold-emblem{font-size:40px}}