:root{font-family:'DM Sans',system-ui,sans-serif;color:#14233c;background:#f6f8fc;font-synthesis:none;--bg:#f6f8fc;--panel:#fff;--ink:#14233c;--muted:#66748a;--line:#e7ebf2;--nav:#111d32;--accent:#395be6;--accent-soft:#eaf0ff;--green:#168463;--orange:#ae741e;--shadow:0 8px 32px rgba(34,52,82,.045)}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button{cursor:pointer}a{color:var(--accent)}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #87a7ff;outline-offset:2px}.shell{display:flex;min-height:100vh}.sidebar{width:272px;flex-shrink:0;background:var(--nav);color:#e9eefb;min-height:100vh;padding:29px 17px;position:sticky;top:0;height:100vh;overflow:auto;scrollbar-width:thin}.brand{display:flex;gap:12px;align-items:center;padding:0 12px 32px}.brand-icon{background:#5268ed;color:white;width:40px;height:40px;border-radius:13px;display:grid;place-items:center;font-weight:800;font-size:22px}.brand strong{display:block;letter-spacing:-.6px;font-size:17px}.brand small{display:block;color:#9cacc5;font-size:11px;margin-top:3px}.side-caption{font-size:10px;letter-spacing:1.6px;color:#8293ae;padding:0 14px;margin:14px 0 13px;font-weight:800}.cat-label{margin-top:33px}.nav,.category{display:flex;align-items:center;gap:12px;width:100%;border:0;background:transparent;color:#abb9d0;text-align:left;padding:12px 14px;border-radius:10px;font-size:13px;margin:3px 0}.nav:hover,.category:hover{background:#213049;color:#fff}.nav.active,.category.selected{background:#2b3b60;color:#fff;font-weight:700}.category{justify-content:space-between;padding:9px 11px;gap:8px}.category .cat-text{display:flex;align-items:center;gap:8px;min-width:0}.category .cat-name{white-space:nowrap;text-overflow:ellipsis;overflow:hidden;font-size:12px}.category .pill{font-size:10px;background:#32435f;color:#c6d1e4;padding:3px 7px;border-radius:8px}.side-foot{border-top:1px solid #2b3850;margin-top:30px;padding:24px 13px;color:#a4b3cb;font-size:11px;line-height:1.6}.side-foot a{color:#c6d3ff;text-decoration:none}.tiny-label{font-size:10px;letter-spacing:1px;font-weight:800;margin-bottom:8px}.main{flex:1;min-width:0;display:flex;flex-direction:column}.topbar{height:74px;background:var(--panel);border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:0 38px}.breadcrumb{font-size:11px;font-weight:800;letter-spacing:1.2px;color:#9ca8b8}.breadcrumb span{margin:0 12px;color:#c5ccd8}.breadcrumb b{color:var(--ink)}.top-actions{display:flex;align-items:center;gap:18px}.status{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:8px}.status i{display:block;width:7px;height:7px;border-radius:50%;background:#32b48e}.iconbtn{border:1px solid var(--line);background:var(--panel);border-radius:10px;padding:9px 12px;color:var(--ink)}main{padding:35px 38px 60px;max-width:1560px;width:100%;margin:0 auto;flex:1}footer{text-align:center;padding:18px;font-size:11px;color:var(--muted)}h1,h2,h3{font-family:Manrope,system-ui,sans-serif;letter-spacing:-.8px;margin:0}h1{font-size:29px}h2{font-size:21px}h3{font-size:15px}p{line-height:1.55}.eyebrow{font-weight:800;letter-spacing:1.8px;font-size:10px;color:var(--accent);margin-bottom:11px}.intro{color:var(--muted);margin:10px 0 25px;font-size:14px}.heading-row{display:flex;justify-content:space-between;align-items:flex-start;gap:15px}.btn{padding:11px 17px;background:var(--accent);border:1px solid var(--accent);color:white;border-radius:10px;font-weight:700;font-size:12px;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn.secondary{background:var(--panel);color:var(--ink);border-color:var(--line)}.btn:disabled{opacity:.45;cursor:not-allowed}.summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:27px 0}.stat,.card,.panel{background:var(--panel);border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow)}.stat{padding:21px 23px}.stat small{font-size:11px;color:var(--muted);font-weight:700}.stat strong{display:block;font-size:27px;margin-top:8px;letter-spacing:-.6px}.stat span{font-size:11px;color:var(--muted)}.stat em{font-style:normal;color:var(--accent)}.warning{background:#fff8ed;border:1px solid #f2dfc1;color:#805f24;border-radius:12px;padding:13px 17px;font-size:12px;line-height:1.6;margin:18px 0}.controlbar{display:flex;gap:11px;margin:22px 0;flex-wrap:wrap}.controlbar input,.controlbar select{padding:11px 13px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--ink);font-size:12px}.controlbar input{flex:1;min-width:170px}.section-title{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:26px 0 15px}.section-title small{color:var(--muted);font-size:12px}.question-list{display:grid;gap:10px}.list-item{border:1px solid var(--line);border-radius:13px;background:var(--panel);padding:17px 19px;display:flex;align-items:center;text-align:left;gap:15px;color:var(--ink);width:100%}.list-item:hover{border-color:#9fb4fa}.number{width:39px;height:39px;flex-shrink:0;border-radius:11px;background:#edf1fb;color:#4761ae;display:grid;place-items:center;font-weight:800;font-size:12px}.list-body{flex:1;min-width:0}.list-body strong{display:block;font-size:13px;line-height:1.45}.list-body small{display:block;color:var(--muted);font-size:11px;margin-top:6px}.chip{display:inline-flex;align-items:center;border-radius:50px;padding:5px 9px;font-size:10px;font-weight:800;letter-spacing:.2px;background:#eef1f6;color:#718095;white-space:nowrap}.chip.good{background:#e6f7ef;color:#17855e}.chip.warn{background:#fff0db;color:#9f6d19}.chip.blue{background:var(--accent-soft);color:#4861ba}.viewer-head{display:flex;align-items:center;gap:11px;margin-bottom:17px}.back{border:none;background:none;color:var(--accent);font-size:12px;font-weight:800;padding:8px 0}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.panel{padding:22px}.panel-label{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:11px;letter-spacing:1px;font-weight:800;margin-bottom:20px}.question-text{font-size:18px;line-height:1.52;font-weight:750;min-height:82px}.option{padding:13px 14px;border:1px solid var(--line);border-radius:10px;margin-top:9px;display:flex;align-items:flex-start;gap:11px;font-size:13px;line-height:1.5}.option b{color:var(--accent)}.option.selectable{cursor:pointer}.option.selectable:hover{border-color:#9fb4fa}.option.picked{border-color:var(--accent);background:var(--accent-soft)}.option button{margin-left:auto}.audio{border:0;background:#edf1fb;color:#3754b7;padding:7px 10px;border-radius:9px;white-space:nowrap;font-size:12px}.actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:18px 0}.note{background:#f6f8fd;padding:18px;border-radius:12px;color:#637088;font-size:13px;line-height:1.65}.note strong{color:#253755}.note p{margin:5px 0 0}.no-data{color:var(--muted);font-size:13px;line-height:1.55}.exam-box{max-width:850px}.exam-head{display:flex;gap:14px;align-items:center;justify-content:space-between}.exam-options{margin:25px 0}.exam-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.progress-bar{background:#e8ecf4;border-radius:100px;height:8px;overflow:hidden;margin-top:12px}.progress-bar>div{height:100%;background:#4d68ed}.empty{padding:35px;text-align:center;color:var(--muted);border:1px dashed #cbd5e6;border-radius:14px}.mobile-only{display:none}.toast{position:fixed;right:22px;bottom:22px;background:#1a2943;color:white;padding:13px 18px;border-radius:12px;font-size:12px;box-shadow:0 15px 30px #0003;opacity:0;pointer-events:none;transition:opacity .2s}.toast.show{opacity:1}.pagination{display:flex;gap:8px;justify-content:center;margin-top:18px}.pagination button{padding:9px 14px;background:var(--panel);border:1px solid var(--line);border-radius:9px}.dark{--bg:#0e1625;--panel:#182336;--ink:#f0f4fc;--muted:#abb8cb;--line:#2d3c53;--accent-soft:#293963;--shadow:none;background:var(--bg);color:var(--ink)}.dark .note{background:#22334a;color:#bac7dc}.dark .note strong{color:#fff}.dark .number,.dark .audio{background:#273a59;color:#b4c5ff}.dark .warning{background:#352d24;border-color:#68543d;color:#f1d0a0}.dark .option.picked{background:#293963}.dark .progress-bar{background:#34445c}
@media(max-width:1050px){.sidebar{width:235px}.topbar{padding:0 23px}main{padding:25px}.detail-grid{grid-template-columns:1fr}}@media(max-width:760px){.sidebar{position:fixed;z-index:20;left:-285px;transition:left .2s;width:275px;box-shadow:10px 0 30px #0002}.sidebar.open{left:0}.mobile-only{display:block}.topbar{height:64px;padding:0 15px}.breadcrumb{font-size:9px}.breadcrumb span{margin:0 5px}.status{display:none}main{padding:24px 15px 35px}.summary{grid-template-columns:1fr 1fr}.summary .stat:last-child{grid-column:span 2}.heading-row{align-items:flex-start}h1{font-size:24px}.question-text{font-size:17px;min-height:0}.panel{padding:16px}.chip{white-space:normal}.list-item{padding:13px;gap:9px}.list-item .chip{display:none}.list-body strong{font-size:12px}.controlbar{display:grid;grid-template-columns:1fr 1fr}.controlbar input{grid-column:span 2}.controlbar select{min-width:0}.exam-head{align-items:flex-start}.btn{padding:10px 12px}}
.pdf-modal{border:0;border-radius:17px;padding:18px;width:min(1000px,96vw);height:min(92vh,1000px);background:var(--panel);color:var(--ink);box-shadow:0 30px 90px #0006}.pdf-modal::backdrop{background:#071225b8}.pdf-modal .modal-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.pdf-modal iframe{border:1px solid var(--line);width:100%;height:calc(100% - 92px);border-radius:9px}.pdf-modal p{font-size:11px;color:var(--muted)}.category .cat-name{font-size:11px;white-space:normal;line-height:1.35}

.fold-panel{padding:0;overflow:hidden}.fold-summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:22px;cursor:pointer;font-size:11px;letter-spacing:.8px;font-weight:800;color:var(--muted)}.fold-summary::-webkit-details-marker{display:none}.fold-summary::after{content:"⌄";font-size:20px;line-height:1;color:var(--accent);margin-left:auto}.fold-panel details[open]>.fold-summary::after{content:"⌃"}.fold-summary:hover{background:var(--accent-soft)}.fold-cue{font-size:10px;letter-spacing:0;color:var(--accent);white-space:nowrap;font-weight:700}.fold-body{padding:0 22px 22px}.fold-body h2{margin-bottom:12px}.fold-summary:focus-visible{outline:3px solid #87a7ff;outline-offset:-3px}@media(max-width:760px){.fold-summary{padding:18px}.fold-body{padding:0 18px 18px}}

/* Keep independently collapsible note and answer cards from stretching to equal height */
.detail-grid:has(> .fold-panel){align-items:start}
.detail-grid:has(> .fold-panel) > .fold-panel{align-self:start;height:auto}

.question-toolbar{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin:12px 0 17px}.question-toolbar-main,.question-toolbar-progress{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.question-toolbar .btn{padding:10px 13px}.question-toolbar .chip{padding:9px 12px}@media(max-width:760px){.question-toolbar{gap:9px;margin:8px 0 13px}.question-toolbar-main,.question-toolbar-progress{gap:6px}.question-toolbar .btn{padding:9px 11px;font-size:11px}.question-toolbar-progress{width:100%}}

.audio-diagnostics{font-size:11px;color:var(--muted);padding:8px 2px;line-height:1.5}

.audio-status{background:var(--accent-soft);border:1px solid var(--line);border-radius:10px;color:var(--ink);font-size:12px;line-height:1.45;padding:11px 14px;margin-bottom:12px;overflow-wrap:anywhere}

.audio-settings{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:9px;padding:9px 3px;font-size:12px;color:var(--muted)}.audio-settings label{display:flex;align-items:center;gap:10px;font-weight:700}.audio-settings select{background:var(--panel);border:1px solid var(--line);border-radius:9px;padding:8px;color:var(--ink)}

.question-image{margin:16px 0 8px}.image-zoom-trigger{display:flex;flex-direction:column;align-items:center;gap:7px;max-width:100%;padding:10px;background:var(--panel);border:1px solid var(--line);border-radius:12px;color:var(--accent)}.image-zoom-trigger img{display:block;max-width:100%;height:auto;object-fit:contain}.zoom-hint{font-size:11px;font-weight:700}.image-modal{background:var(--panel);color:var(--ink);border:0;border-radius:15px;width:min(94vw,1100px);max-height:94vh;padding:18px;box-shadow:0 25px 80px #0008}.image-modal::backdrop{background:#0b1322c9}.image-modal .modal-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:15px}.image-modal img{display:block;max-width:100%;height:auto;max-height:calc(90vh - 120px);object-fit:contain;margin:auto}.image-modal p{text-align:center;color:var(--muted);font-size:11px}

.quiz-choice{display:flex;align-items:center;gap:13px;width:100%;text-align:left;border:1px solid var(--line);background:var(--panel);color:var(--ink);padding:15px 17px;border-radius:10px;margin:9px 0;line-height:1.55}.quiz-choice b{color:var(--accent)}.quiz-choice:hover:not(:disabled){border-color:var(--accent)}.quiz-choice.quiz-picked{border-color:var(--accent);background:var(--accent-soft)}.quiz-choice:disabled{cursor:default}.practice-result{padding:15px;border-radius:10px;background:var(--accent-soft);margin:16px 0;color:var(--ink)}.practice-result.correct{border-left:4px solid #149764}.practice-result.incorrect{border-left:4px solid #bb6945}.practice-result p{margin:7px 0}

.listen-controls{margin:22px 0 12px}.listen-controls .btn{min-height:43px}.listen-options{display:flex;align-items:flex-start;flex-wrap:wrap;gap:12px 25px;margin:22px 0}.listen-options label{display:flex;gap:8px;align-items:center;color:var(--ink);font-size:13px}.listen-options input{accent-color:var(--accent);width:16px;height:16px}.listen-controls .btn:focus-visible{outline:3px solid var(--accent)}@media(max-width:760px){.listen-controls{display:grid;grid-template-columns:1fr 1fr}.listen-options{flex-direction:column}}

/* Enlarge rendered view without touching original 278×184 PNG bytes or aspect ratio. */
.image-modal img{width:556px;max-width:100%;height:auto;max-height:calc(90vh - 120px);object-fit:contain}
@media(max-width:760px){.image-modal img{width:100%;max-width:100%}}

/* Approved study concept: white, navy and cobalt. Shared final UI components. */
:root{--bg:#fff;--panel:#fff;--ink:#0c1b38;--nav:#10243c;--muted:#607087;--accent:#0863f7;--line:#dde4ef;--accent-soft:#eef4ff;--shadow:none;font-family:'DM Sans',Arial,sans-serif;background:#fff}body{background:var(--bg)}.sidebar{width:224px;padding:30px 14px}.brand{padding:0 12px 35px}.brand strong{font-size:21px;font-weight:600}.brand small{margin-top:7px}.side-caption{display:none}.nav{font-size:15px;padding:15px 12px;margin:5px 0;border-radius:7px;color:#d1dce9}.nav.active{background:#173e6a}.category-disclosure{margin-top:35px;padding:0 10px;color:#b4c3d8;font-size:13px}.category-disclosure>summary{cursor:pointer;padding:12px 0}.side-foot{margin-top:30px}.topbar{height:68px;padding:0 36px}.breadcrumb{letter-spacing:.3px;font-size:12px}.status i{display:none}main{padding:34px 36px 60px;max-width:1440px}.eyebrow{display:none}h1{font-size:28px}h2{font-size:21px}.btn{font-size:14px;min-height:44px;border-radius:6px;font-weight:600}.iconbtn{min-width:44px;min-height:44px;border-radius:6px;display:inline-flex;align-items:center;justify-content:center}.panel,.stat{border-radius:8px;box-shadow:none}.summary{gap:0;border-block:1px solid var(--line);margin:25px 0}.stat{border:0;border-radius:0;border-right:1px solid var(--line);padding:20px}.stat:last-child{border:0}.stat strong{font-size:26px}.warning{background:#f8fafc;color:var(--muted);border-color:var(--line);border-radius:6px}.list-item{border-radius:6px;padding:19px 15px}.list-body strong{font-size:15px}.list-body small{font-size:12px}.number{background:transparent;color:var(--muted);border-radius:0}.intro{font-size:15px}.question-text{font-family:'DM Sans',Arial,sans-serif;font-size:22px;line-height:1.5;font-weight:700;min-height:0;letter-spacing:-.4px;margin-bottom:18px}.viewer-head{font-size:13px;color:var(--muted);gap:20px;align-items:center;margin:0 0 23px;padding-bottom:18px;border-bottom:1px solid var(--line)}.viewer-actions{display:flex;gap:10px;margin-left:auto;align-items:center}.study-layout{display:grid;grid-template-columns:minmax(0,1fr) 225px;gap:32px}.study-main{min-width:0}.language-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.language-tabs{display:flex;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:#f8fafc}.language-tabs button{border:0;border-bottom:2px solid transparent;padding:13px 24px;font-size:14px;background:transparent;color:var(--muted);min-height:44px}.language-tabs button.selected{background:var(--panel);color:var(--accent);border-bottom-color:var(--accent)}.audio{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;min-width:44px;border:1px solid var(--line);background:var(--panel);border-radius:6px;color:var(--accent);padding:9px 12px;font-size:13px;cursor:pointer}.study-options .audio span{display:none}.option{padding:17px 14px;align-items:center;border-radius:6px;gap:15px;margin:12px 0;font-size:16px;min-height:68px}.option>b{border:1px solid var(--line);border-radius:50%;width:32px;height:32px;display:grid;place-items:center;flex-shrink:0;font-weight:500;color:var(--ink)}.option>span{flex:1}.option>.audio{flex-shrink:0;margin-left:auto}.question-image{margin:16px 0 22px}.image-zoom-trigger{padding:0;border:0;border-radius:6px;overflow:hidden;position:relative;width:100%;background:transparent}.image-zoom-trigger img{width:100%;max-width:556px;height:auto;max-height:none;object-fit:contain;align-self:flex-start}.zoom-hint{position:absolute;right:12px;bottom:12px;background:#10243ce8;color:white;padding:7px;border-radius:4px;font-size:11px}.answer-reveal{margin:22px 0;border:1px solid var(--line);border-radius:6px}.answer-reveal>summary{padding:15px;text-align:center;font-size:14px;cursor:pointer;list-style:none}.answer-reveal .fold-body{padding:20px}.question-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:20px;margin-top:28px;font-size:13px;color:var(--muted)}.question-bottom .btn{min-width:130px}.study-inspector{padding:8px 0 0 22px;border-left:1px solid var(--line);font-size:13px}.study-inspector h3{font-size:15px;margin:0 0 20px}.study-inspector h3:not(:first-child){margin-top:36px}.study-inspector>.btn,.study-inspector>.audio{width:100%;justify-content:flex-start;margin:8px 0}.study-inspector label{display:flex;justify-content:space-between;align-items:center;gap:8px;line-height:1.6;margin:20px 0}.study-inspector select,.menu-content select{border:1px solid var(--line);padding:8px;border-radius:5px;color:var(--ink);background:var(--panel)}.study-inspector details{margin-top:25px;line-height:1.7}.study-inspector summary{cursor:pointer}.status-selected{border-color:var(--accent)!important;background:var(--accent-soft)!important}.tools-menu{position:relative}.tools-menu>summary{display:flex;align-items:center;justify-content:center;list-style:none;width:44px;height:44px;border:1px solid var(--line);border-radius:6px;cursor:pointer;color:var(--ink)}.tools-menu>summary::-webkit-details-marker{display:none}.menu-content{position:absolute;right:0;top:52px;z-index:10;width:270px;background:var(--panel);border:1px solid var(--line);border-radius:8px;box-shadow:0 12px 40px #0c1b3825;padding:18px;color:var(--ink)}.menu-content>strong{display:block;margin-bottom:15px}.menu-content button{width:100%;display:flex;align-items:center;gap:10px;padding:12px 6px;border:0;background:transparent;text-align:left;font-size:14px;color:var(--ink);border-radius:5px}.menu-content button:hover{background:var(--accent-soft)}.menu-content label{display:flex;align-items:center;justify-content:space-between;margin:12px 0;font-size:13px}.quiz-choice{font-size:16px;border-radius:6px;min-height:64px}.exam-box{max-width:900px}.listen-options{padding-block:15px;border-top:1px solid var(--line)}.note{background:#f8fafc;border-radius:6px}.dark .note{background:#22334a}.dark .language-tabs{background:#182336}.dark .warning{background:#22334a;color:var(--muted)}.dark .stat{background:transparent}.dark .quiz-choice{background:var(--panel)}footer{font-size:11px;line-height:1.8}footer strong{font-weight:500;color:var(--accent)}
@media(max-width:1150px){.sidebar{width:210px}main{padding:28px}.study-layout{grid-template-columns:minmax(0,1fr) 190px;gap:24px}.study-inspector{padding-left:16px}.language-tabs button{padding:12px 20px}}
@media(max-width:950px){.study-layout{display:block}.study-inspector{display:none}.study-main{max-width:700px;margin:auto}.viewer-head{max-width:700px;margin-inline:auto}.topbar{padding-inline:22px}}
@media(max-width:760px){.sidebar{width:280px;left:-300px;padding-top:24px}.sidebar.open{left:0}.topbar{height:64px;padding:0 16px;position:sticky;top:0;z-index:12}.breadcrumb{font-size:10px}.breadcrumb>b,.breadcrumb>span{display:none}.top-actions{gap:0}.main{width:100%}main{padding:22px 18px 36px}.viewer-head{gap:8px;font-size:11px;padding-bottom:12px;margin-bottom:20px}.viewer-actions{gap:3px}.viewer-actions .iconbtn,.tools-menu>summary{width:40px;min-width:40px;height:40px;min-height:40px}.back{font-size:13px;white-space:nowrap}.language-row{gap:15px;margin-bottom:21px}.language-tabs{flex:1;max-width:260px}.language-tabs button{flex:1;padding:11px 15px;font-size:14px}.language-row>.audio span{display:none}.question-text{font-size:21px;line-height:1.45}.option{font-size:15px;gap:10px;padding:13px 12px;min-height:65px}.option>b{width:28px;height:28px}.option>.audio{padding:8px;min-width:42px}.question-image img{max-width:100%;width:100%}.question-bottom{position:sticky;bottom:0;background:var(--panel);padding:15px 0 calc(15px + env(safe-area-inset-bottom));margin:25px -1px 0;z-index:5;gap:12px}.question-bottom .btn{min-width:0;font-size:13px;padding:11px 16px}.question-bottom>span{font-size:12px;white-space:nowrap}.summary{grid-template-columns:repeat(3,minmax(0,1fr))}.summary .stat:last-child{grid-column:auto}.stat{padding:15px 8px}.stat small{font-size:9px}.stat strong{font-size:23px}.stat span{font-size:10px}.heading-row>.btn{font-size:11px;padding:10px}.menu-content{width:260px}.panel{padding:18px}.list-item{padding:15px 10px}.list-body strong{font-size:14px}.list-body small{font-size:11px}.number{width:27px}.exam-head h1{font-size:23px}.controlbar{display:flex}.controlbar input{width:100%;min-width:0}.controlbar select{flex:1}.listen-controls{gap:10px}.listen-controls .btn{font-size:13px}h1{font-size:26px}.answer-reveal .fold-body h2{font-size:19px}}
.mobile-only{display:none}.image-zoom-trigger{max-width:480px}.image-zoom-trigger img{width:100%;max-width:100%}@media(max-width:760px){.mobile-only{display:inline-flex}.image-zoom-trigger{max-width:100%}}

.quiz-option-row{display:flex;align-items:center;gap:10px}.quiz-option-row>.quiz-choice{flex:1;min-width:0}.quiz-option-row>.audio{flex-shrink:0}.quiz-option-row>.audio span{display:none}.exam-map{display:flex;flex-wrap:wrap;gap:7px;margin:20px 0}.exam-map button{border:1px solid var(--line);border-radius:5px;width:40px;height:40px;background:var(--panel);color:var(--ink);font-size:13px}.exam-map button.current{background:var(--accent);color:white;border-color:var(--accent)}.exam-map button.answered{background:var(--accent-soft);border-color:#83a9ff}.category-disclosure summary:focus-visible,.tools-menu summary:focus-visible,.answer-reveal summary:focus-visible{outline:3px solid #87a7ff;outline-offset:2px}
@media(max-width:760px){.breadcrumb{font-size:14px;color:var(--ink);font-weight:600;letter-spacing:0}.sidebar-close{position:absolute;right:14px;top:12px;color:#fff;background:transparent;border:1px solid #39506a;border-radius:5px;width:40px;height:40px}.sidebar .brand{padding-top:38px}}@media(min-width:761px){.sidebar-close{display:none}}

/* iOS-informed learning surfaces: system typography, comfortable text and safe areas. */
:root{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}h1,h2,h3,.question-text{font-family:inherit}body{font-size:17px}button,input,select{font-family:inherit}.answer-translation{border-top:1px solid var(--line);margin:20px 0 0;padding-top:16px}.answer-translation>summary{font-size:17px;color:var(--accent);cursor:pointer;min-height:44px;padding:10px 0}.answer-translation>div{padding-top:12px}.answer-translation p{font-size:17px}.answer-translation .audio{font-size:15px}.listening-page{max-width:880px;margin:auto}.listening-page>h1{font-size:34px;letter-spacing:-.6px}.listening-subtitle{color:var(--muted);font-size:17px;margin:8px 0 28px;line-height:1.5}.session-selector{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}.session-selector label{font-size:15px;font-weight:600}.session-selector select{min-height:48px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--ink);font-size:17px;max-width:65%}.player-surface{border:1px solid var(--line);border-radius:16px;padding:28px;background:var(--panel)}.player-heading{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:15px;margin-bottom:20px}.player-heading strong{color:var(--ink);font-weight:600}.player-stage{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--accent);margin:20px 0 14px}.player-stage:before{content:'';width:8px;height:8px;border-radius:50%;background:currentColor}.player-question{font-size:24px;font-weight:650;line-height:1.4;letter-spacing:-.3px;margin:0 0 24px}.player-option{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-top:1px solid var(--line);font-size:17px;line-height:1.5}.player-option>b{width:30px;flex-shrink:0;color:var(--muted);font-size:16px}.player-option.active{color:var(--accent);font-weight:600}.player-option.revealed{color:var(--green);font-weight:600}.recall-box{margin-top:22px;padding:20px;background:var(--accent-soft);border-radius:12px;font-size:17px;line-height:1.6}.recall-box p{margin:8px 0}.recall-box:empty{display:none}.player-transport{display:flex;gap:14px;justify-content:center;align-items:center;padding-top:26px;margin-top:25px;border-top:1px solid var(--line)}.player-transport button{min-height:52px;border-radius:12px;font-size:17px;padding:12px 18px}.player-transport .play-main{min-width:150px}.player-transport .transport-skip{width:52px;padding:10px}.player-stop{display:block;margin:12px auto 0;color:var(--muted);background:transparent;border:0;min-height:44px;font-size:15px}.player-settings{margin-top:26px;border:1px solid var(--line);border-radius:14px;padding:20px}.player-settings>summary{font-size:17px;font-weight:600;cursor:pointer;min-height:44px;padding:8px 0}.player-settings label{display:flex;justify-content:space-between;align-items:center;gap:20px;border-top:1px solid var(--line);padding:17px 0;font-size:17px;line-height:1.4}.player-settings input[type=checkbox]{width:24px;height:24px;accent-color:var(--accent);flex-shrink:0}.player-settings select{font-size:17px;padding:10px;border:1px solid var(--line);border-radius:8px;color:var(--ink);background:var(--panel);min-height:44px}.device-note{margin-top:25px;font-size:14px;color:var(--muted);line-height:1.5}.session-path{color:var(--muted);font-size:15px;line-height:1.6;margin-top:25px}.player-status{font-size:15px;color:var(--muted);margin-top:15px;text-align:center}.btn,.audio,.iconbtn{touch-action:manipulation}.answer-reveal .fold-body p{font-size:17px;line-height:1.6}
@media(max-width:760px){main{padding:24px 20px calc(30px + env(safe-area-inset-bottom))}.topbar{padding-inline:max(16px,env(safe-area-inset-left))}.breadcrumb{font-size:17px;text-transform:none}.iconbtn,.tools-menu>summary,.viewer-actions .iconbtn{min-height:44px;min-width:44px;height:44px}.viewer-head{font-size:13px;line-height:1.5;gap:10px}.viewer-head>span{max-width:145px}.back{font-size:15px}.language-tabs button{font-size:17px}.question-text{font-size:24px;line-height:1.38;font-weight:650;margin-bottom:24px}.option{font-size:17px;line-height:1.5;padding:17px 12px;margin:14px 0;gap:12px}.option>.audio{min-width:44px;min-height:44px}.answer-reveal>summary{font-size:17px;min-height:50px;text-align:left;padding:16px}.answer-reveal .fold-body{padding:20px}.question-bottom .btn{font-size:15px;min-height:48px}.question-bottom{padding-inline:0}.player-surface{padding:22px 18px;border-radius:16px}.player-question{font-size:23px}.listening-page>h1{font-size:34px}.session-selector{display:block}.session-selector label{display:block;margin-bottom:10px}.session-selector select{max-width:100%;width:100%}.player-heading{font-size:15px;align-items:flex-start;gap:14px}.player-heading>span{white-space:nowrap}.player-transport{gap:12px}.player-settings{padding:18px}.intro{font-size:17px;line-height:1.5}.panel-label{letter-spacing:0;font-size:14px}.quiz-choice{font-size:17px}.listen-options label{font-size:17px}.no-data{font-size:15px}.list-body strong{font-size:17px}.btn{font-size:16px}.controlbar input,.controlbar select{font-size:17px}footer{font-size:12px}}

#playerCategoryTotal{margin:0 0 12px}.player-heading{margin-bottom:10px}@media(max-width:760px){.player-transport{position:sticky;bottom:0;z-index:6;background:var(--panel);padding:16px 0 calc(16px + env(safe-area-inset-bottom));margin-inline:-5px}.player-transport .play-main{min-width:155px}.player-status{line-height:1.5}.player-question{margin-bottom:18px}.player-stop{margin-top:0}}
@media(max-width:760px){.topbar{height:calc(64px + env(safe-area-inset-top));padding-top:env(safe-area-inset-top)}.option,.intro,.language-tabs button,.player-option,.answer-reveal .fold-body p,.answer-translation p,.player-settings label,.session-selector select{font-size:1.0625rem}.listening-page .player-settings input:focus-visible{outline:3px solid #87a7ff;outline-offset:3px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* Compact revision: 16px body, 19px question, flat full-width answer rows. */
.practice-category{display:block;color:var(--muted);font-size:13px;margin-bottom:5px}.exam-head{margin-bottom:20px;align-items:center}.exam-head h1{font-size:24px}.practice-question-row{display:flex;align-items:flex-start;gap:12px}.practice-question-row>.question-text{flex:1;margin:0}.practice-question-row>.audio{flex-shrink:0}.practice-question-row>.audio span{display:none}.quiz-option-row{position:relative;display:block;margin:10px 0}.quiz-option-row>.quiz-choice{margin:0;width:100%;padding:14px 58px 14px 14px;min-height:58px;gap:12px;font-size:16px;line-height:1.45}.quiz-option-row>.audio{position:absolute;right:7px;top:50%;transform:translateY(-50%);border:0;background:transparent;padding:8px}.exam-options{margin:20px 0}.player-surface{border-radius:10px;padding:20px}.player-question{font-size:20px;line-height:1.4}.player-option{padding:12px 0;font-size:16px;line-height:1.45}.player-settings{border-radius:10px;padding:16px}.listening-page>h1{font-size:28px}.listening-subtitle{font-size:16px;margin:8px 0 20px}.recall-box{padding:15px;border-radius:8px;font-size:16px}
@media(max-width:760px){body{font-size:16px}main{padding:18px 16px calc(24px + env(safe-area-inset-bottom))}.topbar{height:calc(56px + env(safe-area-inset-top))}.breadcrumb{font-size:15px}.question-text{font-size:19px;line-height:1.4;letter-spacing:-.2px;font-weight:600;margin-bottom:16px}.exam-head{gap:16px;margin-bottom:18px}.exam-head h1{font-size:21px}.exam-head>.btn{font-size:13px;white-space:nowrap;padding:9px 12px}.exam-box{padding:0;border:0;border-radius:0}.exam-options{margin:18px 0}.quiz-option-row{margin:9px 0}.quiz-option-row>.quiz-choice{font-size:16px;padding:13px 55px 13px 12px;min-height:56px}.option{font-size:16px;line-height:1.45;padding:12px;margin:10px 0;gap:10px}.option>b{width:26px;height:26px}.panel{border-radius:8px}.language-tabs button{font-size:15px;padding:10px 15px}.language-row{margin-bottom:18px}.viewer-head{margin-bottom:16px;gap:8px;font-size:12px}.intro{font-size:15px;margin:8px 0 18px}.answer-reveal .fold-body p,.answer-translation p{font-size:16px;line-height:1.5}.answer-reveal>summary,.answer-translation>summary{font-size:15px}.answer-reveal .fold-body{padding:16px}.question-bottom .btn{font-size:14px;min-height:44px}.listening-page>h1{font-size:27px}.listening-subtitle{font-size:15px;line-height:1.5;margin-bottom:20px}.session-selector{margin-bottom:18px}.session-selector label{font-size:13px;margin-bottom:7px}.session-selector select{font-size:16px;min-height:44px;padding:8px 10px}.player-surface{padding:16px;border-radius:10px}.player-heading{font-size:14px}.player-question{font-size:19px;line-height:1.4;margin-bottom:16px}.player-option{font-size:16px;line-height:1.45;padding:12px 0;gap:10px}.player-option>b{width:20px;font-size:14px}.player-stage{font-size:13px;margin:14px 0 12px}.player-settings{margin-top:18px;padding:14px}.player-settings>summary{font-size:15px}.player-settings label{font-size:15px;padding:12px 0}.player-settings select{font-size:16px;padding:8px}.player-settings input[type=checkbox]{width:20px;height:20px}.player-transport{margin-top:18px;padding:12px 0 calc(12px + env(safe-area-inset-bottom))}.player-transport button{min-height:44px;border-radius:8px;font-size:15px;padding:10px 14px}.player-transport .play-main{min-width:140px}.player-transport .transport-skip{width:44px}.player-status{font-size:13px}.recall-box{font-size:15px}.no-data{font-size:13px}.list-body strong{font-size:15px}.btn{font-size:14px}.session-path,.device-note{font-size:13px;margin-top:18px}.controlbar input,.controlbar select{font-size:16px}}

.library-home{max-width:1000px;margin:auto}.home-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.home-heading h1{font-size:28px}.home-heading>span{font-size:14px;color:var(--muted)}.home-progress{display:flex;gap:24px;font-size:14px;color:var(--muted);margin:16px 0 22px}.home-shortcuts{display:flex;gap:10px;margin:0 0 26px}.library-filters{display:grid;grid-template-columns:1fr 2fr 1fr;gap:12px;margin-bottom:24px}.library-filters label{display:none}.library-filters input,.library-filters select{width:100%;min-width:0;min-height:44px;padding:11px;border:1px solid var(--line);background:var(--panel);border-radius:7px;color:var(--ink);font-size:14px}.library-section-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:0 0 10px}.library-section-head h2{font-size:20px}.library-section-head>span{font-size:13px;color:var(--muted)}.library-home .question-list{gap:0;border-top:1px solid var(--line)}.library-home .list-item{border:0;border-bottom:1px solid var(--line);border-radius:0;padding:17px 0;gap:14px}.library-home .list-body strong{font-size:16px;font-weight:500}.library-home .list-body small{font-size:12px;margin-top:5px}.library-home .number{font-weight:500;font-size:12px;width:32px}.list-chevron{font-size:24px;color:var(--muted)}.source-disclosure{margin-top:32px;border-top:1px solid var(--line);padding-top:15px;font-size:14px;color:var(--muted)}.source-disclosure>summary{cursor:pointer;min-height:44px;padding:10px 0}.pagination{align-items:center;font-size:13px;color:var(--muted);gap:18px}.practice-position{font-size:12px;color:var(--muted);display:inline-block;margin-top:4px}.practice-next{justify-content:flex-end}.practice-next .btn{min-width:145px}
@media(max-width:760px){.home-heading{display:block}.home-heading h1{font-size:25px}.home-heading>span{display:block;margin-top:6px;font-size:13px}.home-progress{gap:18px;font-size:12px;margin:16px 0 20px}.home-shortcuts{gap:8px;margin-bottom:22px}.home-shortcuts .btn{font-size:13px;flex:1;padding:10px 8px;white-space:nowrap}.library-filters{grid-template-columns:1fr 1fr;gap:10px;margin-bottom:22px}.library-filters #homeCategory{grid-column:1/-1}.library-filters #search{grid-column:1/-1;grid-row:2}.library-filters #filter{grid-column:1/-1}.library-filters input,.library-filters select{font-size:16px}.library-section-head h2{font-size:18px}.library-home .list-item{padding:14px 0;gap:10px}.library-home .list-body strong{font-size:15px;line-height:1.45}.library-home .number{width:28px;font-size:11px}.library-home .list-body small{font-size:12px}.practice-next{position:sticky;bottom:0;background:var(--panel);padding:12px 0 calc(12px + env(safe-area-inset-bottom));margin-top:12px;z-index:5}}

/* Locked baseline: targeted study header and exam toolbar changes only. */
.study-location{display:flex;gap:8px;align-items:center;min-width:0;flex:1}.study-category{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}.study-id{white-space:nowrap;flex-shrink:0}.exam-question-list{margin:18px 0;font-size:14px;color:var(--muted)}.exam-question-list>summary{cursor:pointer;min-height:44px;padding:12px 0}.exam-action-bar{display:flex;align-items:center;gap:12px;margin-top:18px;justify-content:space-between}.exam-action-bar .btn{white-space:nowrap}.player-heading #playerCount{font-size:12px;text-align:right}
@media(max-width:760px){.viewer-head>.study-location{max-width:none;line-height:1;gap:6px;font-size:12px}.viewer-head .back{font-size:13px}.viewer-actions{gap:4px}.study-main>.question-text{font-size:17px;line-height:1.45;font-weight:600}.active-exam{padding-bottom:90px}.exam-action-bar{position:fixed;left:0;right:0;bottom:0;z-index:14;display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));margin:0;border-top:1px solid var(--line);background:var(--panel)}.exam-action-bar .btn{min-width:0;min-height:44px;font-size:13px;padding:10px 8px}.exam-question-list{margin-bottom:20px}.player-heading{gap:8px}.player-heading #playerCount{font-size:12px;white-space:nowrap}}

/* Targeted behaviour fixes and the requested compact progress surface. */
#practiceCat{width:100%;max-width:100%;min-width:0}.controlbar:has(#practiceCat){display:block}.practice-next{justify-content:space-between}.practice-next .btn{min-width:0}.exam-session-tools{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:12px 0 20px;font-size:12px;color:var(--muted)}.exam-session-tools details{position:relative}.exam-session-tools summary{cursor:pointer;padding:10px 0;min-height:44px}.exam-session-tools details>div{position:absolute;right:0;top:44px;width:190px;background:var(--panel);border:1px solid var(--line);border-radius:7px;padding:8px;z-index:9;box-shadow:0 8px 30px #0002}.exam-session-tools button{display:block;width:100%;border:0;background:transparent;color:var(--ink);font-size:14px;text-align:left;padding:12px 8px}.result-counts{font-size:14px;color:var(--muted);line-height:1.6}.session-dialog{border:1px solid var(--line);border-radius:12px;max-width:440px;width:calc(100vw - 32px);padding:22px;background:var(--panel);color:var(--ink)}.session-dialog::backdrop{background:#10243c88}.session-dialog h2{font-size:21px}.session-dialog p{font-size:15px}.session-dialog-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end;margin-top:22px}.session-dialog-actions .btn{font-size:14px}.listening-page{overflow-anchor:none}.progress-overview{display:flex;gap:20px;padding:14px 0 20px;margin-bottom:8px;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}.progress-category-panel{border:0;padding:0;border-radius:0}.progress-category-panel h2{font-size:19px;margin:18px 0 6px}.progress-category-panel .heading-row strong{font-size:15px;font-weight:500}.progress-category-panel .heading-row small{font-size:12px;color:var(--muted)}.progress-category-panel .progress-bar{height:5px;margin-top:9px}
@media(max-width:760px){.progress-overview{font-size:12px;gap:18px}.progress-category-panel h2{font-size:18px}.progress-category-panel .heading-row strong{font-size:14px}.listening-page #playerOptions,.listening-page #playerRecall{overflow-anchor:none}.player-settings{padding:12px}.session-path{font-size:12px;line-height:1.5}.device-note{font-size:12px;line-height:1.5}.player-stop{font-size:13px;min-height:36px}.player-status{font-size:12px}.player-question{font-size:17px}.player-option{font-size:15px;padding:10px 0}.player-surface{padding:14px}.listening-page>h1{font-size:24px}.listening-subtitle{font-size:14px}.player-settings label{font-size:14px;padding:10px 0}.player-settings>summary{font-size:14px}}

.toast{z-index:80;max-width:calc(100vw - 32px);line-height:1.5}.study-id{font-weight:500}@media(max-width:760px){.toast{left:16px;right:16px;width:auto;font-size:13px;padding:12px 14px}}

/* Version info and passive update status */
.settings-page{max-width:760px;margin:auto}.settings-page .panel{margin-top:18px}.settings-version{font-size:22px;font-weight:700;font-variant-numeric:tabular-nums}.settings-page .no-data{line-height:1.6}


/* v1.1.1: light sidebar only in light appearance; preserve dark appearance. */
body:not(.dark) .sidebar{background:#f7f9fd;color:#14233c;border-right:1px solid #dce4f0}
body:not(.dark) .sidebar .brand strong{color:#14233c}
body:not(.dark) .sidebar .brand small{color:#64748b}
body:not(.dark) .sidebar .side-caption,body:not(.dark) .sidebar .tiny-label{color:#66748a}
body:not(.dark) .sidebar .nav,body:not(.dark) .sidebar .category{color:#34465f}
body:not(.dark) .sidebar .nav:hover,body:not(.dark) .sidebar .category:hover{background:#e6eefb;color:#12243d}
body:not(.dark) .sidebar .nav.active,body:not(.dark) .sidebar .category.selected{background:#dce9ff;color:#173f78}
body:not(.dark) .sidebar .category .pill{background:#e4ebf6;color:#34465f}
body:not(.dark) .sidebar .side-foot{border-color:#dce4f0;color:#66748a}
body:not(.dark) .sidebar .side-foot a{color:#2455a6}
body:not(.dark) .sidebar .sidebar-close{color:#14233c;border-color:#cbd7e8}