:root{--navy:#0b3a6e;--navy2:#0f4c8f;--bg:#e9edf2;--line:#c9d1db;--txt:#1d2733;--mut:#5d6b7c;--green:#2e9d4f;--yellow:#f2b705;--red:#d23b3b}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--txt);min-height:100vh;font:15px/1.5 Arial,Helvetica,sans-serif}a{color:var(--navy2)}header.top{background:var(--navy);color:#fff;border-bottom:4px solid var(--yellow);justify-content:space-between;align-items:center;gap:10px;padding:10px 16px;display:flex}.brand{color:#fff;font-size:17px;font-weight:700;text-decoration:none}.brand small{opacity:.8;font-size:11px;font-weight:400;display:block}.who{text-align:right;font-size:12px}.clock{color:var(--navy);white-space:nowrap;background:#fff;border-radius:4px;padding:4px 10px;font-family:Courier New,monospace;font-size:20px;font-weight:700}.clock.warn{background:var(--red);color:#fff;animation:1s infinite blink}@keyframes blink{50%{opacity:.6}}.box{border:1px solid var(--line);background:#fff;border-radius:4px}.center{max-width:480px;margin:32px auto;padding:0 16px}.center .box{padding:22px}.wide{max-width:760px;margin:24px auto;padding:0 16px}h2{color:var(--navy);border-bottom:2px solid var(--navy);margin-bottom:14px;padding-bottom:6px;font-size:17px}label.f{color:var(--mut);margin:10px 0 4px;font-size:13px;display:block}input.f{border:1px solid var(--line);border-radius:3px;width:100%;padding:10px;font-size:15px}.btn{cursor:pointer;background:var(--navy2);color:#fff;text-align:center;border:1px solid #0000;border-radius:3px;padding:10px 16px;font-size:14px;font-weight:700;text-decoration:none;display:inline-block}.btn:disabled{opacity:.5;cursor:default}.btn.full{width:100%;margin-top:14px}.btn.yel{background:var(--yellow);color:#222}.btn.grn{background:var(--green)}.btn.red{background:var(--red)}.btn.ghost{color:var(--navy);border-color:var(--navy);background:#fff}table{border-collapse:collapse;width:100%;font-size:14px}td,th{border:1px solid var(--line);text-align:left;padding:7px 9px}th{background:#f2f5f8}ol.rules{padding-left:18px;font-size:14px}ol.rules li{margin:5px 0}.err{color:var(--red);margin-top:8px;font-size:13px}.mut{color:var(--mut);font-size:13px}.exam{grid-template-columns:1fr 290px;gap:12px;max-width:1150px;margin:0 auto;padding:12px;display:grid}.qhead{background:var(--navy2);color:#fff;border-radius:4px 4px 0 0;justify-content:space-between;align-items:center;padding:8px 14px;font-weight:700;display:flex}.sub{color:var(--navy);background:#fff;border-radius:3px;padding:2px 8px;font-size:12px}.qbody{min-height:300px;padding:18px 16px}.qtext{white-space:pre-wrap;margin-bottom:18px;font-size:16px}.opt{cursor:pointer;border:1px solid #0000;border-radius:3px;align-items:flex-start;gap:10px;margin-bottom:4px;padding:9px 10px;font-size:15px;display:flex}.opt:hover{background:#f2f6fb}.opt.sel{background:#e3eefb;border-color:#9dbbe0}.opt input{margin-top:4px}.opt b{min-width:18px}.nav{border-top:1px solid var(--line);background:#f7f9fb;justify-content:space-between;gap:8px;padding:12px 16px;display:flex}.ttl{background:var(--navy2);color:#fff;border-radius:4px 4px 0 0;padding:8px 12px;font-size:14px;font-weight:700}.grid{grid-template-columns:repeat(5,1fr);gap:6px;padding:12px;display:grid}.n{border:1px solid var(--line);text-align:center;cursor:pointer;background:#fff;border-radius:3px;padding:7px 0;font-size:13px;font-weight:700}.n.ans{background:var(--green);color:#fff;border-color:var(--green)}.n.rag{background:var(--yellow);color:#222;border-color:var(--yellow)}.n.cur{outline:3px solid var(--navy);outline-offset:1px}.legend{color:var(--mut);flex-wrap:wrap;gap:10px;padding:0 12px 10px;font-size:12px;display:flex}.legend i{border:1px solid var(--line);vertical-align:-2px;width:12px;height:12px;margin-right:4px;display:inline-block}.stat{padding:0 12px 12px;font-size:13px}.side .btn{width:calc(100% - 24px);margin:0 12px 12px}@media (max-width:820px){.exam{grid-template-columns:1fr}.grid{grid-template-columns:repeat(10,1fr)}.n{padding:6px 0;font-size:12px}}.modal{z-index:9;background:#00000080;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal .box{width:100%;max-width:420px}.mh{background:var(--navy);color:#fff;padding:10px 14px;font-weight:700}.mb{padding:16px 14px}.mf{border-top:1px solid var(--line);justify-content:flex-end;gap:8px;padding:10px 14px;display:flex}.verdict{text-align:center;color:#fff;border-radius:4px;margin:14px 0;padding:14px;font-size:20px;font-weight:700}.ok{color:var(--green);font-weight:700}.no{color:var(--red);font-weight:700}.big{color:var(--navy);white-space:nowrap;font-size:22px;font-weight:700}.rv{border-bottom:1px solid var(--line);padding:14px 16px}.rv .o{border-radius:3px;padding:3px 6px;font-size:14px}.rv .o.c{background:#dff3e5}.rv .o.w{background:#fbe1e1}.rv .bh{border-left:3px solid var(--navy2);background:#f4f7fb;margin-top:8px;padding:8px 10px;font-size:13px}.cta{border:2px solid var(--yellow);text-align:center;background:#fffbea;border-radius:4px;margin:18px 0;padding:18px}.pkg{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;padding:14px;display:flex}.hero{max-width:760px;margin:0 auto;padding:40px 16px 20px}.hero h1{color:var(--navy);margin-bottom:12px;font-size:32px;line-height:1.15}.hero p{color:var(--mut);margin-bottom:20px;font-size:17px}.feat{grid-template-columns:1fr 1fr;gap:10px;max-width:760px;margin:0 auto;padding:0 16px 30px;display:grid}.feat .box{padding:14px;font-size:14px}.feat b{color:var(--navy);display:block}.foot{color:var(--mut);text-align:center;padding:16px;font-size:11px}