:root{font-family:'Segoe UI',system-ui,sans-serif;color:#172941;background:#f2f5fa;font-size:16px;--blue:#2167eb;--navy:#102747;--muted:#64748b;--line:#dce4ef}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button{cursor:pointer;border:0;border-radius:8px;padding:11px 16px;background:var(--blue);color:white;font-weight:600}button:hover{filter:brightness(.94)}button:disabled{opacity:.5;cursor:not-allowed}button.secondary{background:#e9eff8;color:#214065}button.danger{background:#fff0ef;color:#ac2222}input,select,textarea{width:100%;border:1px solid #b9c7da;border-radius:7px;background:white;padding:11px;color:#172941}textarea{min-height:110px;resize:vertical}input[type=checkbox],input[type=radio]{width:19px;height:19px;accent-color:var(--blue)}label{display:block;font-size:14px;font-weight:600;margin:17px 0 7px}label.check{display:flex;gap:10px;align-items:center;font-weight:400}a{color:var(--blue)}h1{font-size:28px;letter-spacing:-.7px;margin:0 0 9px}h2{font-size:19px;margin:0 0 12px}p{line-height:1.6}.muted{color:var(--muted)}.small{font-size:13px}.shell{display:grid;grid-template-columns:230px 1fr;min-height:100vh}aside{background:var(--navy);color:white;padding:30px 18px;display:flex;flex-direction:column;gap:9px;position:sticky;top:0;height:100vh}.brand{font-size:25px;font-weight:750;letter-spacing:-1px;margin:0 12px 35px}.brand span{color:#78a9ff}aside button{text-align:left;background:transparent;font-weight:400;padding:13px 15px;color:#c7d6eb}aside button.active{background:#2461a8;color:white}aside .bottom{margin-top:auto}.top{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:18px 32px;background:white;gap:15px}.top strong{font-size:14px}.top small{display:block;color:var(--muted)}main{padding:32px;max-width:1400px;margin:auto}.card{background:white;border:1px solid var(--line);border-radius:12px;padding:24px;margin-bottom:18px}.toolbar,.actions{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.actions{justify-content:flex-start;margin-top:22px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin:24px 0}.metric{padding:20px;border:1px solid var(--line);background:white;border-radius:10px}.metric strong{font-size:30px;display:block;margin-top:8px}.metric span{color:var(--muted);font-size:14px}.badge{display:inline-block;background:#eaf1ff;color:#1a57b7;padding:5px 10px;border-radius:20px;font-size:13px}.badge.green{background:#e5f6ef;color:#187448}.badge.amber{background:#fff3d9;color:#835d08}.empty{padding:40px;text-align:center;color:var(--muted)}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:15px 12px;border-bottom:1px solid var(--line)}th{color:var(--muted);font-weight:600;background:#f6f8fc}.scroll{overflow:auto}.auth{display:grid;grid-template-columns:1fr 1fr;min-height:100vh}.auth-brand{background:linear-gradient(145deg,#1e4c8c,#0c2342);color:white;padding:12vw 8vw;display:flex;flex-direction:column;justify-content:center}.auth-brand h1{font-size:48px}.auth-brand p{font-size:20px;color:#c8dbf8}.auth-form{padding:60px 8vw;display:flex;justify-content:center;flex-direction:column}.auth-form form{width:100%;max-width:470px}#notice{position:fixed;bottom:25px;right:25px;background:#102747;color:white;max-width:450px;padding:0;border-radius:9px;z-index:10}#notice:not(:empty){padding:15px 20px}.question{padding:16px 0;border-bottom:1px solid var(--line)}.option{display:flex;align-items:center;gap:12px;border:1px solid var(--line);padding:16px;border-radius:8px;margin:10px 0;cursor:pointer;font-weight:400;font-size:16px}.option:has(input:checked){background:#eaf1ff;border-color:var(--blue)}.exam-layout{display:grid;grid-template-columns:200px minmax(0,1fr);gap:22px}.question-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin:15px 0}.question-nav button{padding:10px;background:#edf1f7;color:#1c395b}.question-nav button.answered{background:#d9f4e6;color:#167249}.question-nav button.current{background:var(--blue);color:white}.question-nav button.flag{outline:2px solid #f0b33e}.timer{font-size:24px;font-variant-numeric:tabular-nums;font-weight:700}.media{max-width:100%;max-height:330px;display:block;margin:20px 0}.rule{padding:15px;background:#f5f8fc;border:1px solid var(--line);border-radius:8px;margin:15px 0}.notice{padding:16px;background:#fff6df;border:1px solid #f5dfaa;border-radius:9px;line-height:1.6;margin:15px 0}.loading{padding:40px}.error{color:#b62626}.pill{background:#eff4ff;border-radius:6px;padding:5px 8px}fieldset{border:1px solid var(--line);border-radius:8px;padding:20px}legend{font-weight:600}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #79aafa;outline-offset:3px}
@media(max-width:900px){.shell{grid-template-columns:180px 1fr}main{padding:22px}.metrics{grid-template-columns:repeat(2,1fr)}.grid{grid-template-columns:1fr}.auth-form{padding:35px}.auth-brand{padding:40px}.exam-layout{grid-template-columns:1fr}.question-nav{grid-template-columns:repeat(8,1fr)}}@media(max-width:600px){.shell{display:block}aside{position:static;height:auto;padding:16px;display:flex;flex-direction:row;flex-wrap:wrap;gap:5px}.brand{width:100%;margin:0 5px 12px}aside button{padding:9px;font-size:14px}aside .bottom{margin:0}.top{padding:13px 20px}main{padding:20px 14px}.card{padding:18px}.auth{display:block}.auth-brand{padding:28px}.auth-brand h1{font-size:34px}.auth-brand p{font-size:16px}.auth-form{padding:28px}.question-nav{grid-template-columns:repeat(5,1fr)}h1{font-size:25px}}
.top-user{display:flex;align-items:center;justify-content:flex-end;gap:14px;text-align:right}.top-user #account-mode{width:auto;min-width:190px;margin-top:4px;padding:5px 28px 5px 8px;border-color:#b9cbed;background-color:#edf4ff;color:#174b98;font-size:12px;font-weight:650}@media(max-width:600px){.top-user{gap:7px}.top-user #account-mode{min-width:150px;max-width:190px;font-size:11px}}
.auth-divider{display:flex;align-items:center;gap:12px;margin:26px 0;color:var(--muted)}.auth-divider:before,.auth-divider:after{content:"";height:1px;background:var(--line);flex:1}.cashier-ticket{border:2px solid var(--blue);background:#f5f9ff;text-align:center}.cashier-ticket strong{display:block;font-size:34px;letter-spacing:4px;color:var(--navy);margin:12px 0;font-variant-numeric:tabular-nums}
.kid-audio{margin:28px auto 34px;max-width:520px;text-align:center}.kid-audio audio{display:none}.kid-audio-button{width:100%;min-height:150px;padding:22px 28px;border-radius:28px;display:flex;align-items:center;justify-content:center;gap:24px;background:linear-gradient(145deg,#347cf4,#1857d2);border:5px solid #dce9ff;box-shadow:0 15px 34px rgba(33,103,235,.24),inset 0 1px 0 rgba(255,255,255,.3);transition:transform .15s ease,box-shadow .15s ease}.kid-audio-button:hover{transform:translateY(-2px);box-shadow:0 19px 38px rgba(33,103,235,.3),inset 0 1px 0 rgba(255,255,255,.3)}.kid-audio-button:active{transform:scale(.98)}.kid-audio-icon{width:86px;height:86px;flex:0 0 86px;border-radius:50%;display:grid;place-items:center;background:white;color:#2167eb;font-size:38px;line-height:1;padding-left:5px;box-shadow:0 8px 20px rgba(13,49,113,.22)}.kid-audio-copy{text-align:left}.kid-audio-copy strong{display:block;font-size:27px;line-height:1.15}.kid-audio-copy small{display:block;margin-top:9px;color:#dce9ff;font-size:16px}.kid-audio-button.is-playing{background:linear-gradient(145deg,#16a776,#087957);border-color:#c9f5e4}.kid-audio-button.is-playing .kid-audio-icon{color:#087957;padding-left:0;font-size:30px}.delivery-media{margin-left:0}.exam-confirm-overlay{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;padding:24px;background:rgba(7,22,45,.68);backdrop-filter:blur(7px);animation:exam-fade .16s ease-out}.exam-confirm{width:min(540px,100%);padding:38px;border-radius:24px;background:white;text-align:center;box-shadow:0 28px 80px rgba(3,18,43,.38);animation:exam-rise .2s ease-out}.exam-confirm-mark{width:72px;height:72px;margin:0 auto 19px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(145deg,#367ef2,#1b60df);color:white;font-size:38px;font-weight:800;box-shadow:0 10px 24px rgba(33,103,235,.28)}.exam-confirm h2{font-size:30px;margin-bottom:10px;color:#102747}.exam-confirm>p{max-width:430px;margin:0 auto;color:#5b6c82}.exam-confirm-summary{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:25px 0 12px}.exam-confirm-summary span{padding:15px;border-radius:13px;background:#eef8f3;color:#1a6d4a}.exam-confirm-summary span.has-missing{background:#fff4dc;color:#855c08}.exam-confirm-summary strong{display:block;font-size:27px}.exam-confirm .exam-confirm-warning{color:#9a6410;font-weight:650}.exam-confirm .exam-confirm-ready{color:#15724a;font-weight:650}.exam-confirm-actions{display:grid;grid-template-columns:1fr 1.15fr;gap:12px;margin-top:26px}.exam-confirm-actions button{min-height:50px;font-size:16px}@keyframes exam-fade{from{opacity:0}}@keyframes exam-rise{from{opacity:0;transform:translateY(12px) scale(.98)}}
@media(max-width:600px){.kid-audio-button{min-height:132px;padding:18px;gap:16px;border-radius:22px}.kid-audio-icon{width:72px;height:72px;flex-basis:72px;font-size:32px}.kid-audio-copy strong{font-size:22px}.kid-audio-copy small{font-size:14px}.exam-confirm{padding:28px 20px;border-radius:20px}.exam-confirm h2{font-size:26px}.exam-confirm-actions{grid-template-columns:1fr}.exam-confirm-actions [data-confirm="submit"]{order:-1}}
.mobile-top,.mobile-drawer-close,.mobile-menu-label,.mobile-nav-backdrop{display:none}
@media(max-width:760px){
 body{background:#f3f6fb}.shell{display:block;min-height:100dvh}.shell>section{min-width:0}.mobile-top{display:flex;align-items:center;gap:11px}.mobile-brand{font-size:21px;font-weight:800;letter-spacing:-.8px;color:#102747}.mobile-brand span{color:#397af0}.mobile-nav-toggle{width:43px;height:43px;padding:10px;display:grid;align-content:center;gap:5px;border-radius:12px;background:#edf3ff}.mobile-nav-toggle span{display:block;width:22px;height:2px;margin:auto;border-radius:5px;background:#174d99}.mobile-nav-backdrop{display:block;position:fixed;inset:0;z-index:90;padding:0;border-radius:0;background:rgba(7,22,45,.58);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s ease}.shell.mobile-nav-open .mobile-nav-backdrop{opacity:1;visibility:visible;pointer-events:auto}
 aside{position:fixed;inset:0 auto 0 0;z-index:100;width:min(86vw,340px);height:100dvh;padding:20px 16px calc(22px + env(safe-area-inset-bottom));display:flex;flex-direction:column;align-items:stretch;gap:7px;overflow-y:auto;transform:translateX(-105%);transition:transform .23s ease;box-shadow:18px 0 55px rgba(4,19,42,.25)}.shell.mobile-nav-open aside{transform:translateX(0)}.mobile-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:15px}.mobile-drawer-head .brand{margin:0 8px;font-size:25px}.mobile-drawer-close{display:grid;place-items:center;width:42px;height:42px;padding:0;border-radius:50%;background:#203b60;color:white;font-size:30px;font-weight:300}.mobile-menu-label{display:block;margin:0 13px 5px;color:#7891b2;font-size:11px;font-weight:700;letter-spacing:1.3px}aside button:not(.mobile-drawer-close){width:100%;min-height:48px;padding:13px 15px;border-radius:10px;font-size:16px}aside .bottom{width:100%;margin-top:auto;padding-top:18px;border-top:1px solid rgba(255,255,255,.12)}
 .top{position:sticky;top:0;z-index:40;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:7px 12px;padding:10px 14px 9px;background:rgba(255,255,255,.96);box-shadow:0 3px 16px rgba(16,39,71,.08);backdrop-filter:blur(12px)}.top>.top-center{grid-column:1/-1;grid-row:2;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#60728c}.top-user{grid-column:2;grid-row:1;min-width:0}.top-user>div>strong{display:block;max-width:140px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px}.top-user #account-mode{min-width:0;width:150px;max-width:150px;margin-top:2px;padding:5px 24px 5px 7px;font-size:11px}.top-user small{font-size:10px;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
 main{width:100%;max-width:none;padding:20px 14px calc(96px + env(safe-area-inset-bottom))}.toolbar{align-items:flex-start}.toolbar>div{min-width:0}.toolbar h1{overflow-wrap:anywhere}.toolbar:has(>div>h1)>button{width:100%;min-height:49px;margin-top:8px}.card{padding:19px 17px;border-radius:16px}.card>.toolbar{gap:13px}.card>.toolbar>div{width:100%}.card>.actions{display:grid;grid-template-columns:1fr 1fr;width:100%;gap:10px}.card>.actions button{width:100%;min-width:0;min-height:48px;padding:11px 9px}.card>.actions button:first-child:last-child{grid-column:1/-1}.metrics{grid-template-columns:1fr 1fr;gap:10px}.metric{padding:15px}.metric strong{font-size:25px}.scroll{margin-left:-4px;margin-right:-4px}.question{font-size:22px;line-height:1.4}.option{min-height:58px;padding:15px;font-size:17px}.exam-layout{grid-template-columns:1fr;gap:14px}.exam-layout>.card:first-child{order:2}.question-nav{grid-template-columns:repeat(5,1fr)}#notice{left:14px;right:14px;bottom:calc(18px + env(safe-area-inset-bottom));max-width:none;text-align:center}.qe-top{margin-bottom:18px}.qe-local-status{display:none}.qe-heading{margin-bottom:20px}.qe-heading h1{font-size:28px}.qe-layout{gap:18px}.qe-preview{display:none}.qe-savebar .toolbar>.actions{display:grid;grid-template-columns:1fr;width:100%;margin:8px 0 0}.qe-savebar .toolbar>.actions button{width:100%;min-height:48px}.qe-bank-heading>.actions{display:grid;grid-template-columns:1fr;width:100%}.qe-bank-heading>.actions button{width:100%;min-height:47px}.bank-folder{min-height:0}.mg-actions{display:grid;grid-template-columns:1fr 1fr}.mg-actions button{width:100%;min-height:44px}
}