:root{
  --ts-navy:#071220;--ts-panel:#0F2034;--ts-panel2:#142A44;--ts-line:#294764;--ts-text:#F1F7FF;--ts-muted:#B8C8D8;
  --ts-gold:#D8B86F;--ts-turquoise:#17A7A0;--ts-danger:#FF9A9A;--ts-light-bg:#F8F4EB;--ts-light-panel:#FFFFFF;--ts-light-line:#D7C9B3;
  --bg:var(--ts-navy);--panel:var(--ts-panel);--active:var(--ts-panel2);--line:var(--ts-line);--text:var(--ts-text);--muted:var(--ts-muted);
  --gold:var(--ts-gold);--turquoise:var(--ts-turquoise);--danger:var(--ts-danger);--soft:color-mix(in srgb,var(--ts-navy) 78%,var(--ts-panel) 22%);
  --shadow:0 16px 44px rgba(0,0,0,.24);--radius:18px;
}
*{box-sizing:border-box}html{color-scheme:dark light}body{margin:0;font-family:Inter,"Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}button,summary{font:inherit}.hidden{display:none!important}
body[data-theme="light"]{--bg:var(--ts-light-bg);--panel:var(--ts-light-panel);--active:#F1F7FF;--line:var(--ts-light-line);--text:var(--ts-navy);--muted:#294764;--soft:#FBF8F1;--shadow:0 14px 34px rgba(7,18,32,.10)}
body[data-theme="light"] .topbar{background:var(--ts-navy);color:var(--ts-text);border-color:var(--ts-line)}body[data-theme="light"] .brandcopy small,body[data-theme="light"] .labpill{color:var(--ts-muted)}body[data-theme="light"] .brandmark{color:var(--ts-navy);background:var(--gold)}body[data-theme="light"] .themebtn{color:var(--ts-text);border-color:var(--ts-line);background:var(--ts-panel2)}
.shell{width:min(1280px,100%);margin:0 auto;padding:12px 14px 10px}.topbar{min-height:54px;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:8px 12px;margin-bottom:10px;border:1px solid var(--line);border-radius:16px;background:var(--panel);box-shadow:var(--shadow)}
.brand{display:inline-flex;align-items:center;gap:10px;color:inherit;text-decoration:none;min-width:0}.brandmark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:var(--gold);color:var(--ts-navy);font-weight:900;letter-spacing:-.03em}.brandcopy{display:grid;line-height:1.05}.brandcopy strong{font-size:18px}.brandcopy small{margin-top:4px;color:var(--muted);font-size:13px}.topmeta{display:flex;align-items:center;gap:8px}.labpill{font-size:13px;color:var(--muted);white-space:nowrap}.themebtn{border:1px solid var(--line);background:var(--active);color:var(--text);border-radius:999px;padding:9px 12px;cursor:pointer;min-height:44px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.workspace{padding:12px;display:grid;gap:9px}.modebar{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px}.mode{min-height:46px;border:1px solid var(--line);background:var(--active);color:var(--text);border-radius:12px;cursor:pointer;font-weight:750}.mode.active{border-color:var(--turquoise);box-shadow:inset 0 0 0 1px var(--turquoise);background:color-mix(in srgb,var(--active) 82%,var(--turquoise) 18%)}
.controlrow{display:flex;align-items:center;justify-content:space-between;gap:10px;min-width:0}.domains{display:flex;flex-wrap:wrap;gap:8px}.chip{border:1px solid var(--line);background:var(--soft);color:var(--text);padding:9px 13px;border-radius:999px;cursor:pointer;min-height:44px;font-size:15px}.chip.active{border-color:var(--turquoise);box-shadow:inset 0 0 0 1px var(--turquoise)}
.progressdetails{position:relative;flex:0 0 auto}.progressdetails>summary{list-style:none;cursor:pointer;border:1px solid var(--line);border-radius:999px;padding:10px 13px;color:var(--muted);background:var(--soft);font-size:13px;font-weight:750;min-height:44px;display:flex;align-items:center}.progressdetails>summary::-webkit-details-marker{display:none}.progressmenu{position:absolute;right:0;top:48px;z-index:20;width:min(420px,88vw);padding:12px;border:1px solid var(--line);border-radius:14px;background:var(--panel);box-shadow:var(--shadow)}.skillbox{display:grid;gap:4px;padding:10px;border:1px solid var(--line);border-radius:11px;background:var(--soft)}.skillbox span,.skillbox small{color:var(--muted);font-size:13px;line-height:1.4}.skillbox strong{color:var(--gold)}.dataactions{display:flex;gap:9px;margin-top:9px}.dataactions button{flex:1}.notice{padding:9px 11px;border:1px solid var(--turquoise);border-radius:10px;background:color-mix(in srgb,var(--active) 88%,var(--turquoise) 12%);font-size:14px;line-height:1.4}
.statsbar{display:grid;grid-template-columns:repeat(4,minmax(120px,1fr)) minmax(190px,1.35fr);gap:8px}.metric{display:flex;align-items:baseline;justify-content:space-between;gap:9px;padding:8px 10px;border:1px solid var(--line);background:var(--soft);border-radius:11px;min-height:44px;color:var(--text)}.metric span{font-size:13px;color:var(--muted);white-space:nowrap}.metric strong{font-size:17px}.metricbutton{cursor:pointer;text-align:left}.metricbutton:hover{border-color:var(--turquoise)}.metricbutton.has-errors{box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--gold) 70%,transparent)}.metric-wide{display:grid;grid-template-columns:auto auto;align-items:center}.bar{grid-column:1/-1;height:6px;background:color-mix(in srgb,var(--line) 55%,transparent);border-radius:999px;overflow:hidden}.bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--turquoise),var(--gold));width:0}
.trainer{border-top:1px solid var(--line);padding-top:9px;min-width:0}.modehead{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}.modecopy{display:flex;align-items:baseline;gap:10px;min-width:0}.eyebrow{font-size:15px;font-weight:850;color:var(--gold);white-space:nowrap}.modehint{font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;line-height:1.35}.sessionpill{border:1px solid var(--line);padding:6px 10px;border-radius:999px;font-size:12px;color:var(--muted);white-space:nowrap}
.qcard{background:var(--soft);border:1px solid var(--line);border-radius:15px;padding:14px}.qmeta{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:13px}.question{font-size:clamp(23px,2.55vw,31px);line-height:1.18;margin:12px 0 6px}.instruction{color:var(--gold);font-size:14px;line-height:1.35;margin-bottom:10px}.answers{display:grid;grid-template-columns:repeat(auto-fit,minmax(155px,1fr));column-gap:22px;row-gap:14px}.answer{padding:13px 14px;border:1px solid var(--line);background:var(--active);color:var(--text);border-radius:12px;text-align:left;cursor:pointer;min-height:54px;font-weight:700;font-size:17px;line-height:1.25}.answer:hover{border-color:var(--turquoise)}.answer.selected{outline:3px solid var(--gold);outline-offset:3px;border-color:transparent}.answer.correct{border:2px solid var(--turquoise);background:color-mix(in srgb,var(--active) 80%,var(--turquoise) 20%)}.answer.wrong{border:2px solid var(--danger);background:color-mix(in srgb,var(--active) 82%,var(--danger) 18%)}.answer.dim{opacity:.72}.answer:disabled{cursor:not-allowed;opacity:1}.answer.dim:disabled{opacity:.72}.feedback{margin-top:10px;padding:11px 13px;border-radius:10px;background:var(--active);display:none;line-height:1.45;font-size:15px}.feedback.show{display:block}.feedback.good{border-left:4px solid var(--turquoise)}.feedback.bad{border-left:4px solid var(--danger)}.feedback.examhold{border-left:4px solid var(--gold)}.feedback .detail{display:block;margin-top:5px;color:var(--muted)}
.notationVisual{margin:4px 0 10px;border:1px solid var(--line);border-radius:13px;background:color-mix(in srgb,var(--panel) 62%,var(--soft) 38%);padding:5px 10px;display:grid;place-items:center;min-height:92px}.notationVisual svg{width:min(420px,100%);height:82px;overflow:visible}.staff-line{stroke:currentColor;stroke-width:1.5}.note-head{fill:currentColor}.note-stem{stroke:currentColor;stroke-width:2}.music-clef{fill:currentColor}.ledger{stroke:currentColor;stroke-width:1.5}
.actionrow{display:flex;justify-content:space-between;gap:11px;align-items:center;margin-top:10px}.primaryactions{display:flex;gap:9px;margin-left:auto}.primary,.secondary,.dangerbtn{border-radius:11px;padding:10px 14px;cursor:pointer;min-height:44px;font-size:15px}.primary{border:0;background:var(--gold);color:var(--ts-navy);font-weight:850}.secondary{background:var(--active);color:var(--text);border:1px solid var(--line)}.dangerbtn{background:transparent;color:var(--text);border:1px solid var(--danger)}.smallbtn{font-size:13px;padding:9px 10px;min-height:44px}.empty,.examSummary{padding:18px;border:1px dashed var(--line);border-radius:13px;color:var(--muted);background:var(--soft);font-size:15px;line-height:1.5}.examSummary{border-style:solid;color:var(--text)}.examSummary h3{margin-top:0}.examgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:12px 0}.exammetric{padding:11px;border:1px solid var(--line);border-radius:10px;background:var(--active)}.exammetric strong{display:block;font-size:24px;color:var(--gold)}.reviewlist{display:grid;gap:12px;margin-top:14px}.reviewitem{padding:14px 15px;border-radius:11px;background:var(--active);border:1px solid var(--line);font-size:16px;line-height:1.55}.reviewitem.bad{border-left:4px solid var(--danger)}.reviewitem.good{border-left:4px solid var(--turquoise)}.footer{text-align:center;color:var(--muted);font-size:13px;line-height:1.35;padding-top:7px}
.mode:focus-visible,.chip:focus-visible,.answer:focus-visible,.primary:focus-visible,.secondary:focus-visible,.dangerbtn:focus-visible,.themebtn:focus-visible,.progressdetails>summary:focus-visible,.brand:focus-visible,.metricbutton:focus-visible,.iconbtn:focus-visible{outline:3px solid var(--turquoise);outline-offset:2px}button:disabled{cursor:not-allowed}
.modal{position:fixed;inset:0;z-index:99;display:grid;place-items:center;padding:18px;background:rgba(7,18,32,.72)}.modalcard{width:min(480px,100%);max-height:min(88vh,760px);overflow:auto;padding:18px;border-radius:16px;border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow)}.modalcard h2{font-size:21px;margin:0 0 8px}.modalcard p{line-height:1.5;color:var(--muted);font-size:14px}.modalactions{display:flex;justify-content:flex-end;gap:9px;margin-top:14px}.modalhead{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.modalhead p{margin:3px 0 0}.iconbtn{width:44px;height:44px;flex:0 0 44px;border:1px solid var(--line);border-radius:999px;background:var(--active);color:var(--text);font-size:27px;line-height:1;cursor:pointer}.examerrorscard{width:min(760px,100%);max-height:calc(100vh - 16px);overflow-y:auto}#examErrorsModal{padding-top:8px;padding-bottom:8px}.examErrorStats{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:14px 0}.examErrorStat{padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--soft)}.examErrorStat span{display:block;color:var(--muted);font-size:13px}.examErrorStat strong{display:block;margin-top:2px;font-size:22px;color:var(--gold)}.examErrorList{display:grid;gap:10px}.examErrorItem{padding:12px 13px;border:1px solid var(--line);border-radius:11px;background:var(--soft);font-size:15px;line-height:1.45}.examErrorItem.ready{border-left:4px solid var(--turquoise)}.examErrorItem.locked{border-left:4px solid var(--gold)}.examErrorItemHead{display:flex;justify-content:space-between;gap:12px}.examErrorItemHead span{font-weight:800}.examErrorStatus{margin-top:5px;color:var(--muted)}.examErrorActions{display:flex;justify-content:flex-end;gap:9px;margin-top:14px}
.examSetup{padding:15px;border:1px solid var(--line);border-radius:15px;background:var(--soft)}.examSetupHead h3{margin:0 0 5px;font-size:21px}.examSetupHead p{margin:0 0 12px;color:var(--muted);font-size:14px;line-height:1.45}.examOptions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.examOption{display:flex;align-items:flex-start;gap:9px;padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--active);cursor:pointer}.examOption:has(input:checked){border-color:var(--turquoise);box-shadow:inset 0 0 0 1px var(--turquoise)}.examOption input{margin-top:4px;accent-color:var(--turquoise)}.examOption span{display:grid;gap:4px}.examOption strong{font-size:15px}.examOption small{color:var(--muted);font-size:13px;line-height:1.4}.examStartRow{display:flex;justify-content:flex-end;margin-top:11px}.feedback .solution{display:block;margin-top:6px}.feedback:focus{outline:2px solid var(--turquoise);outline-offset:2px}.examIntro{font-size:16px;line-height:1.55;color:var(--muted)}.examActions{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0}.examPendingNote{display:grid;gap:4px;padding:12px 13px;border:1px solid var(--turquoise);border-radius:11px;background:color-mix(in srgb,var(--active) 88%,var(--turquoise) 12%);font-size:15px;line-height:1.5}.examPendingNote span{color:var(--muted)}.reviewhead{display:flex;justify-content:space-between;gap:14px;align-items:flex-start;font-size:16px}.reviewhead>span{white-space:nowrap;font-size:15px}.reviewline{margin-top:8px;color:var(--muted);font-size:15px}.reviewexplanation{margin-top:8px;line-height:1.6;font-size:16px}.examSummary h3{font-size:23px}.exammetric span{font-size:14px}.exammetric strong{font-size:25px}
@media (max-height:780px) and (min-width:801px){.shell{padding-top:5px}.topbar{min-height:47px;margin-bottom:6px;padding:5px 10px}.brandmark{width:34px;height:34px}.workspace{padding:8px;gap:6px}.modebar{gap:7px}.mode{min-height:44px}.chip{min-height:44px;padding:7px 11px}.progressdetails>summary{min-height:44px;padding:7px 11px}.statsbar{gap:5px}.metric{min-height:37px;padding:5px 8px}.metric span{font-size:12px}.trainer{padding-top:6px}.modehead{margin-bottom:5px}.qcard{padding:10px}.qmeta{font-size:12px}.question{margin:8px 0 4px;font-size:clamp(21px,2.2vw,27px)}.instruction{font-size:13px;margin-bottom:7px}.answers{column-gap:18px;row-gap:10px}.answer{min-height:48px;padding:10px 12px;font-size:16px}.notationVisual{min-height:78px;margin:2px 0 7px;padding:2px 8px}.notationVisual svg{height:70px}.actionrow{margin-top:7px}.feedback{margin-top:7px;padding:8px 10px;font-size:14px}.footer{padding-top:2px;font-size:12px}.examVault{min-height:46px;padding:5px 9px;gap:8px}.examVaultIcon{width:30px;height:30px}.examVaultCopy small{font-size:12px}.examVaultCounts span{padding:3px 6px;font-size:12px}.examSetup{padding:10px}.examSetupHead p{margin-bottom:8px}.examOption{padding:8px}.examStartRow{margin-top:8px}.feedback .solution,.feedback .detail{margin-top:3px}}
@media(max-width:800px){.shell{padding:9px}.topbar{align-items:flex-start}.labpill{display:none}.workspace{padding:10px}.modebar{grid-template-columns:repeat(2,1fr)}.controlrow{align-items:flex-start;flex-direction:column}.progressdetails{width:100%}.progressdetails>summary{display:inline-flex}.progressmenu{position:static;width:100%;margin-top:6px}.statsbar{grid-template-columns:repeat(2,1fr)}.metric-wide{grid-column:1/-1}.modecopy{display:grid;gap:2px}.modehint{white-space:normal}.answers{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:16px;row-gap:12px}.actionrow{align-items:stretch;flex-direction:column}.primaryactions{width:100%;margin-left:0}.primaryactions button,.actionrow>.secondary{flex:1}.footer{padding-bottom:5px}.examOptions{grid-template-columns:1fr}.examStartRow .primary{width:100%}.examActions{display:grid}.reviewhead{display:grid;gap:4px}.reviewhead>span{white-space:normal}.examErrorStats{grid-template-columns:1fr 1fr 1fr}}
@media(max-width:540px){.examErrorStats{grid-template-columns:1fr}.examErrorItemHead{display:grid;gap:3px}.examErrorActions{display:grid}.examErrorActions button{width:100%}}
@media(max-width:430px){.brandcopy strong{font-size:16px}.themebtn{padding:8px 10px}.domains{gap:6px}.chip{padding:8px 10px}.answers{grid-template-columns:1fr;row-gap:12px}.statsbar{grid-template-columns:1fr 1fr}.metric span{white-space:normal}.question{font-size:22px}.primaryactions{flex-direction:column}.mode span{font-size:13px}.answer{font-size:17px;min-height:54px}}

.reviewNotation{margin:8px 0;padding:4px 8px;border:1px solid var(--line);border-radius:10px;background:color-mix(in srgb,var(--panel) 62%,var(--soft) 38%);display:grid;place-items:center}.reviewNotation svg{width:min(330px,100%);height:66px}.reviewNotation .music-clef{fill:currentColor}

.metricbutton{min-height:44px}

.examVault{width:100%;display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;align-items:center;gap:12px;padding:11px 13px;border:1px solid var(--line);border-radius:13px;background:var(--soft);color:var(--text);text-align:left;cursor:pointer;min-height:58px}.examVault:hover,.examVault.has-open{border-color:var(--gold)}.examVaultIcon{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--active);color:var(--gold);font-size:22px;font-weight:900}.examVaultCopy{display:grid;gap:2px}.examVaultCopy strong{font-size:16px}.examVaultCopy small{font-size:14px;color:var(--muted);line-height:1.35}.examVaultCounts{display:flex;gap:7px;flex-wrap:wrap}.examVaultCounts span{padding:5px 8px;border:1px solid var(--line);border-radius:999px;background:var(--active);font-size:13px;color:var(--muted);white-space:nowrap}.examVaultCounts b{color:var(--text);font-size:15px}.examVaultArrow{font-size:28px;color:var(--gold)}.examRetryOne{margin-top:10px}.examErrorStatus{font-size:15px;line-height:1.45}.examErrorItem.ready .examErrorStatus{color:var(--text)}
@media(max-width:800px){.examVault{grid-template-columns:auto minmax(0,1fr) auto}.examVaultCounts{grid-column:2/-1}.examVaultArrow{grid-row:1;grid-column:3}}
@media(max-width:540px){.examVault{grid-template-columns:auto minmax(0,1fr)}.examVaultCounts{grid-column:1/-1}.examVaultArrow{display:none}}
@media (min-width:801px) and (min-height:700px){
  .examerrorscard{width:min(920px,100%);padding:14px 16px}
  .examErrorStats{margin:10px 0;gap:8px}
  .examErrorList{gap:7px}
  .examErrorItem{padding:9px 12px}
  .reviewNotation{margin:5px 0;padding:2px 8px}
  .reviewNotation svg{height:48px}
  .examErrorActions{margin-top:10px}
}