:root{
      --blue-900:#0b3c7a;--blue-800:#0e4a93;--blue-700:#145fb8;--blue-600:#2b74cc;--blue-500:#3b88e6;
      --sky-100:#eaf2ff;--bg:#f1f5fb;--card:#ffffff;--text:#1b2a3a;--muted:#6b7b8e;--line:#d9e2ef;
      --shadow: 0 10px 22px rgba(10, 35, 70, .12);--shadow-soft: 0 6px 14px rgba(10, 35, 70, .10);
      --radius: 14px;--radius-lg: 18px;--container: 1180px;
    }
    *{box-sizing:border-box;margin:0;padding:0;}
    body{font-family:"Segoe UI",Tahoma,Arial,sans-serif;background:radial-gradient(1200px 420px at 50% 0%,#dcecff 0%,#f5f8ff 40%,var(--bg) 100%);color:var(--text);line-height:1.5;}
    a{text-decoration:none;}button{cursor:pointer;font-family:inherit;}
    .wrap{max-width:var(--container);margin:0 auto;padding:0 18px;}
    .topbar{height:64px;background:linear-gradient(180deg,#0c4fa3 0%,#0a3f86 100%);color:#fff;border-bottom:1px solid rgba(255,255,255,.12);box-shadow:0 8px 18px rgba(0,0,0,.18);position:sticky;top:0;z-index:100;}
    .topbar .wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;}
    .brand{display:flex;align-items:center;}
    .logo{width:36px;height:36px;border-radius:8px;background:rgba(255,255,255,.16);display:grid;place-items:center;box-shadow:inset 0 0 0 1px rgba(255,255,255,.18);}
    .nav{display:flex;gap:18px;flex:1;justify-content:center;white-space:nowrap;overflow:auto;scrollbar-width:none;}
    .nav::-webkit-scrollbar{display:none;}
    .nav a{color:rgba(255,255,255,.9);font-size:13px;font-weight:600;padding:8px 10px;border-radius:10px;transition:.15s;}
    .nav a:hover{background:rgba(255,255,255,.10);}
    .nav a.active{background:rgba(255,255,255,.16);box-shadow:inset 0 0 0 1px rgba(255,255,255,.22);}
    .user{display:flex;align-items:center;gap:10px;justify-content:flex-end;}
    .avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(180deg,#ffd3a6,#ffb36b);box-shadow:inset 0 0 0 2px rgba(255,255,255,.35);}
    .name{font-size:13px;font-weight:700;opacity:.95;display:flex;align-items:center;gap:6px;}
    .caret{width:0;height:0;border-left:5px solid transparent;border-right:5px solid transparent;border-top:6px solid rgba(255,255,255,.92);margin-top:2px;}
    .page-hero{margin-top:18px;border-radius:16px;overflow:hidden;box-shadow:var(--shadow);border:1px solid rgba(20,80,160,.20);background:linear-gradient(180deg,rgba(255,255,255,.08) 0%,transparent 35%),linear-gradient(90deg,#0f5fb8 0%,#1a7ad6 45%,#0f5fb8 100%);position:relative;}
    .page-hero::before{content:"";position:absolute;inset:-20px -30px auto -30px;height:150px;background:radial-gradient(260px 90px at 18% 70%,rgba(255,255,255,.18),transparent 60%),radial-gradient(320px 120px at 85% 40%,rgba(255,255,255,.16),transparent 62%);opacity:.9;pointer-events:none;}
    .page-hero .inner{padding:18px 22px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
    .page-hero .title{color:#fff;display:flex;align-items:center;gap:14px;}
    .page-hero .title h2{margin:0;font-size:28px;font-weight:900;letter-spacing:.6px;text-transform:uppercase;text-shadow:0 10px 18px rgba(0,0,0,.18);}
    .page-hero .title p{margin:6px 0 0;font-size:13px;font-weight:800;opacity:.95;}
    .crumbs{display:flex;gap:10px;align-items:center;color:rgba(255,255,255,.92);font-size:12px;font-weight:800;}
    .page{ margin-top:14px; padding-bottom:28px; }
    .page-top{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:16px;}
    .tabs{display:flex;gap:8px;flex-wrap:wrap;}
    .tab{padding:8px 16px;border-radius:12px;background:transparent;border:1px solid rgba(10,35,70,.12);font-weight:700;font-size:13px;transition:.2s;color:var(--text);}
    .tab.active{background:#0e4a93;color:#fff;border-color:transparent;}
    .search{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:12px;border:1px solid rgba(10,35,70,.12);background:#fff;min-width:260px;}
    .search input{border:0;outline:none;width:100%;font-size:13px;font-family:inherit;}
    .page-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start;}
    .table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border-radius:14px;border:1px solid rgba(10,35,70,.10);background:#fff;}
    .table th,.table td{text-align:left;padding:11px 12px;font-size:13px;}
    .table th{background:#f0f6ff;color:#1a3554;font-weight:900;border-bottom:1px solid rgba(10,35,70,.10);}
    .table td{background:#fff;border-bottom:1px solid rgba(10,35,70,.08);}
    .table tr:last-child td{border-bottom:0;}
    .pill{display:inline-block;padding:4px 10px;border-radius:999px;font-size:11px;font-weight:900;white-space:nowrap;background:#f0f6ff;color:#15406e;border:1px solid rgba(20,90,190,.16);}
    .pill.ok{background:#effaf3;color:#1e6a3d;border-color:rgba(20,130,70,.20);}
    .pill.warn{background:#fff6e9;color:#6b2f00;border-color:rgba(220,120,40,.22);}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 14px;border-radius:12px;font-weight:800;font-size:13px;background:linear-gradient(180deg,#1b73d2 0%,#145fb8 100%);color:#fff;border:none;box-shadow:0 10px 18px rgba(20,90,190,.20);transition:.15s;}
    .btn:hover{transform:translateY(-1px);}
    .btn.secondary{background:#f0f6ff;color:#15406e;box-shadow:none;border:1px solid rgba(20,90,190,.16);}
    .btn:disabled{opacity:0.6;cursor:not-allowed;transform:none;}
    .card{background:var(--card);border:1px solid rgba(10,35,70,.10);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);overflow:hidden;}
    .card .head{padding:14px 16px 10px;font-weight:900;color:#1a3554;font-size:16px;}
    .card .body{padding:0 16px 16px;}
    .kv{display:grid;gap:8px;font-size:13px;}
    .kv .k{color:var(--muted);}
    .kv .v{font-weight:900;color:#1a3554;}
    .panel{background:var(--card);border:1px solid rgba(10,35,70,.10);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);overflow:hidden;}
    .panel .head{padding:16px 18px 10px;font-weight:900;color:#1a3554;font-size:18px;}
    .panel .body{padding:0 18px 18px;}
    .muted{color:var(--muted);font-size:13px;}
    .footerbar{margin-top:22px;padding:14px 0 18px;border-top:1px solid rgba(10,35,70,.10);color:var(--muted);font-size:12px;}
    .footerbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;}
    .foot-links{display:flex;gap:18px;flex-wrap:wrap;}
    .foot-links a{color:var(--muted);font-weight:700;}
    .stats{display:flex;align-items:center;gap:12px;font-weight:800;color:#4b5f77;}
    .bar{width:110px;height:10px;border-radius:999px;background:#dfe9f7;overflow:hidden;border:1px solid rgba(20,90,190,.10);}
    .bar > i{display:block;height:100%;width:45%;background:linear-gradient(90deg,#3b88e6,#2b74cc);}
    .modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.5);z-index:1000;opacity:0;visibility:hidden;transition:.3s ease;}
    .modal.open{opacity:1;visibility:visible;}
    .overlay{position:absolute;inset:0;}
    .dialog{background:#fff;border-radius:16px;max-width:900px;width:95%;box-shadow:0 20px 40px rgba(0,0,0,.3);position:relative;overflow:hidden;max-height:90vh;overflow-y:auto;}
    .dhead{padding:16px 18px;background:#0e4a93;color:#fff;font-weight:900;display:flex;align-items:center;justify-content:space-between;}
    .x{width:32px;height:32px;border-radius:50%;background:rgba(255,255,255,.15);border:none;color:#fff;font-size:20px;display:grid;place-items:center;}
    .dbody{padding:18px;}
    .quiz-container{max-width:800px;margin:0 auto;}
    .question{margin-bottom:30px;}
    .question h3{margin-bottom:15px;font-size:18px;font-weight:700;}
    .options label{display:block;margin:10px 0;padding:12px;border-radius:12px;border:1px solid rgba(10,35,70,.12);cursor:pointer;transition:.2s;background:#f8fbff;}
    .options label:hover{background:#e8f2ff;}
    .options input[type="radio"]{margin-right:10px;}
    #timer{font-size:24px;font-weight:bold;text-align:center;margin-bottom:30px;color:#d32b2b;}
    #result{text-align:center;font-size:20px;margin-top:30px;padding:20px;background:#f0f6ff;border-radius:12px;}
    @media (max-width:1100px){.page-grid{grid-template-columns:1fr;}.search{min-width:100%;}}
    @media (max-width:640px){.page-top{flex-direction:column;align-items:stretch;}.tabs{justify-content:center;}}