/* Local SVGs and the established workspace backdrop. */
/* Workspace owns its airport artwork; quiz styles do not request a legacy background. */
#app{--color-primary:#206bc4;--color-primary-hover:#1a5aa8;--color-text:#182433;--color-muted:#52657a;--color-border:#e3e9f0;--color-bg:#f3f6fa;--radius-card:14px;--content-gap:22px;color:var(--color-text);font:14px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;min-width:0;width:100%;max-width:1680px;margin:auto}
#app *,#app button,#app select{font-family:inherit;box-sizing:border-box}
#app h1,#app h2,#app h3,#app p{margin:0}
#app button{cursor:pointer;transition:background-color .16s,border-color .16s;touch-action:manipulation;box-shadow:none}
#app button:disabled{cursor:not-allowed;opacity:.55}
#app button:focus-visible,#app summary:focus-visible,#app input:focus-visible{outline:3px solid #206bc4;outline-offset:3px}
#app .quiz-page-header{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:26px}
#app .quiz-heading-copy{min-width:0}#app .quiz-page-header h1{font-size:30px;line-height:1.3;font-weight:700;margin-bottom:8px;letter-spacing:-.02em}
#app .quiz-page-header p{color:var(--color-muted);font-size:14px;line-height:1.6}
#app .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;width:auto;margin:0;padding:10px 22px;border-radius:10px;font-size:14px;font-weight:600;white-space:nowrap;line-height:1.5;border:1px solid #d5dfea;box-shadow:none;flex:0 0 auto}
#app .btn-primary{background:var(--color-primary);border-color:var(--color-primary);color:#fff}#app .btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}
#app .btn-ghost{background:#fff;color:#40546b}#app .btn-ghost:hover{background:#f5f8fc}#app .quiz-back{flex-shrink:0;min-width:120px}
#app .quiz-modes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-bottom:22px}
#app .mode-btn{display:flex;flex-direction:row;align-items:center;justify-content:flex-start;gap:16px;min-height:112px;padding:24px;text-align:left;border:1px solid #d5dfea;background:#fff;border-radius:var(--radius-card);color:var(--color-text);position:relative;min-width:0}
#app .mode-btn:hover{border-color:#9ab8da;background:#f9fbfe}#app .mode-btn.active{background:#f0f6ff;border-color:var(--color-primary);box-shadow:inset 0 0 0 1px var(--color-primary)}
#app .mode-btn .workspace-svg{width:28px;height:28px;color:var(--color-primary);flex-shrink:0}#app .mode-copy{display:grid;gap:7px;min-width:0}
#app .mode-copy .t{font-size:18px;font-weight:700;line-height:1.4}#app .mode-copy .d{font-size:13px;color:var(--color-muted)}
#app .mode-indicator{margin-left:auto;font-size:12px;color:#40546b;white-space:nowrap}#app .active .mode-indicator{color:#185aa8;font-weight:600}
#app .mode-soon,#app .challenge-status{font-size:12px;color:#805100;background:#fff3dd;border-radius:6px;padding:3px 8px;white-space:nowrap;margin-left:auto}
#app .quiz-setup-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:var(--content-gap);align-items:start}
#app .card{border:1px solid var(--color-border);background:#fff;border-radius:var(--radius-card);box-shadow:0 2px 8px rgba(20,42,70,.05);padding:26px;margin:0 0 22px;text-align:left;min-width:0}
#app .quiz-configuration{padding:0 28px;margin:0}
#app .quiz-setting-group{padding:24px 0}#app .quiz-setting-group+.quiz-setting-group{border-top:1px solid var(--color-border)}
#app .quiz-section-label{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:18px}
#app h2{font-size:18px;line-height:1.4;font-weight:700;text-align:left}#app .quiz-section-label p{font-size:13px;color:var(--color-muted)}
#app .opt-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
#app .opt-btn{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:5px;min-height:72px;padding:14px 16px;border:1px solid #d5dfea;border-radius:10px;background:#fff;color:var(--color-text);text-align:left;white-space:normal;min-width:0}
#app .opt-btn strong{font-size:14px;font-weight:600}#app .opt-btn .label{display:block;font-size:12px;line-height:1.5;color:var(--color-muted);margin:0}
#app .opt-btn:hover{border-color:#8db0d8}#app .opt-btn.active{border-color:#206bc4;background:#f0f6ff;color:#185aa8}
#app .quiz-setting-rows{display:grid;gap:14px}
#app .check-row{display:flex;align-items:flex-start;justify-content:flex-start;gap:12px;margin:0;text-align:left;font-size:14px;cursor:pointer;min-height:44px}
#app .check-row input{width:18px;height:18px;flex:0 0 18px;margin:3px 0 0;accent-color:var(--color-primary)}
#app .setting-copy{display:grid;gap:3px}#app .setting-copy strong{font-size:14px;font-weight:500;color:var(--color-text)}#app .setting-copy small{font-size:13px;color:var(--color-muted);line-height:1.5}
#app .quiz-setup-aside{display:grid;gap:16px;position:sticky;top:22px;min-width:0}
#app .quiz-session-summary{margin:0;padding:24px}#app .quiz-session-summary .quiz-section-label{display:grid;gap:6px}
#app .session-facts{display:grid;grid-template-columns:44px minmax(0,1fr);gap:14px 12px;margin:24px 0}
#app .session-facts dt{font-size:13px;font-weight:400;color:var(--color-muted)}#app .session-facts dd{margin:0;font-size:14px;font-weight:600;text-align:right}
#app .quiz-start{width:100%;min-height:48px;margin-bottom:14px}#app .quiz-note,#app .quiz-guest-note{font-size:13px;line-height:1.7;color:var(--color-muted)}#app .quiz-guest-note{margin-top:14px}
#app .challenge-preview{background:transparent;border:1px solid #d5dfea;border-radius:10px;padding:18px}
#app .challenge-preview summary{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;cursor:pointer;min-height:24px;list-style:none}
#app .challenge-preview[open] .quiz-note{margin:16px 0}#app .challenge-fields{display:grid;gap:14px}
#app .challenge-fields label{display:grid;gap:7px;font-size:13px;color:var(--color-muted)}#app .challenge-fields select{height:44px;width:100%;font-size:14px;border:1px solid #cdd8e5;border-radius:8px;padding:8px;background:#f9fbfd;color:#52657a}
#app .quiz-header{margin:0 0 22px;border:1px solid var(--color-border);border-radius:14px;background:#fff;padding:16px 22px}
#app .progress-wrap{display:flex;align-items:center;gap:20px;width:100%;flex-wrap:nowrap}
#app .progress-text,#app .score-live{font-size:14px;font-weight:500;white-space:nowrap;color:#40546b}
#app .progress-bar{flex:1;height:6px;min-width:40px;background:#e3e9f0;border-radius:6px;overflow:hidden}#app .progress-fill{height:100%;background:var(--color-primary)}
#app .submit-quick{min-height:44px;padding:10px 20px;flex-shrink:0;border:1px solid #cbd9e9;border-radius:8px;color:#185aa8;background:#f6f9fd;font-size:14px;font-weight:600}
#app .timer-badge{font-size:14px;color:#40546b;white-space:nowrap}
#app .quiz-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:var(--content-gap);align-items:start}
#app .quiz-main{min-width:0}#app .quiz-main .card{padding:28px;margin:0}
#app .q-tag,#app .quiz-type-badge{display:inline-flex;align-self:flex-start;align-items:center;width:max-content;max-width:100%;padding:3px 10px;min-height:26px;border-radius:6px;background:#edf4ff;color:#185aa8;font-size:12px;line-height:1.5;font-weight:600}
#app .q-stem{font-size:21px;font-weight:500;line-height:1.75;margin:22px 0 24px;overflow-wrap:anywhere;max-width:75ch}
#app .option-list{display:grid;gap:12px;margin:0}#app .option-item{display:flex;align-items:center;gap:14px;position:relative;min-height:60px;border:1px solid #dbe3ec;border-radius:10px;background:#fff;padding:14px 18px;font-size:16px;line-height:1.7;color:#24364b;cursor:pointer}
#app .option-item:hover:not(.disabled){background:#f8fafc;border-color:#9cb7d6}#app .option-item .letter{display:grid;place-items:center;flex:0 0 30px;width:30px;height:30px;border:1px solid #d5dfea;border-radius:8px;color:#52657a;background:#f7f9fc;font-size:14px;font-weight:600}
#app .option-item .otext{flex:1;min-width:0;overflow-wrap:anywhere}#app .option-state{font-size:12px;white-space:nowrap;flex-shrink:0;color:#185aa8}
#app .option-item.selected{border-color:#206bc4;background:#f1f6fd}#app .option-item.selected .letter{background:#206bc4;border-color:#206bc4;color:#fff}
#app .option-item.correct{background:#f2f8f4;border-color:#98bda5;color:#24364b}#app .option-item.correct .letter{background:#e1eee6;border-color:#98bda5;color:#24643e}#app .option-item.correct .option-state{color:#24643e}
#app .option-item.wrong{background:#fcf4f5;border-color:#d6a2ad;color:#24364b}#app .option-item.wrong .letter{background:#f6e5e9;color:#a62b45;border-color:#d6a2ad}#app .option-item.wrong .option-state{color:#a62b45}
#app .option-item.is-confirmed{cursor:default;opacity:1}
#app .feedback.show{display:block;margin-top:22px;padding:18px 20px;border:0;border-radius:10px;background:#f2f7f4;color:#24643e;font-size:14px;text-align:left;line-height:1.7}
#app .feedback.show.no{background:#fbf4f5;color:#8f2f43}#app .feedback-title{display:block;font-size:14px;margin-bottom:8px}#app .ans-block{display:block}#app .ans-label{font-size:13px;font-weight:500}#app .ans-list{display:inline}#app .ans-line{font-size:14px}
#app .quiz-nav{display:flex;align-items:center;justify-content:flex-end;gap:12px;margin:20px 0 0;min-width:0}#app .quiz-nav .btn{flex:0 0 auto!important;min-width:112px;height:48px;margin:0!important}#app .quiz-nav .btn:first-child{margin-right:auto!important}#app .quiz-nav .confirm-answer{background:#206bc4;color:#fff}#app .quiz-nav .confirm-answer+.btn{background:white;color:#185aa8;border-color:#b9cde4}
#app .quiz-answer-map{background:#fff;border:1px solid var(--color-border);border-radius:14px;padding:22px;position:sticky;top:22px;min-width:0}
#app .quiz-answer-map summary{display:flex;align-items:center;justify-content:space-between;gap:10px;list-style:none;cursor:pointer;font-size:17px;font-weight:700;min-height:28px}#app .map-toggle{font-size:12px;font-weight:400;color:var(--color-muted)}#app .map-legend{font-size:12px;color:var(--color-muted);margin:12px 0 18px}
#app .question-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;max-height:min(520px,calc(100dvh - 330px));min-height:44px;overflow-y:auto;padding:3px;scrollbar-width:thin;scrollbar-color:#b3c4d7 #f4f7fb}
#app .question-number{border:1px solid #d5dfea;border-radius:6px;background:#fff;color:#52657a;min-height:40px;font-size:13px;padding:4px;line-height:1.5}
#app .question-number.answered{background:#ecf5ef;border-color:#abcdb7;color:#24643e}#app .question-number.current{border:2px solid #206bc4;color:#185aa8;font-weight:700}
#app .result-hero{background:#fff;border:1px solid var(--color-border);border-radius:14px;margin-bottom:22px;padding:28px;text-align:center}#app .result-detail{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:0 0 24px}
#app .rd-item{background:#f7f9fc;border-radius:10px;padding:18px}#app .rd-item .v{font-size:30px;font-weight:700;line-height:1.3}#app .rd-item .k{font-size:14px;color:#52657a;margin-top:6px}#app .rd-item.ok .v{color:#24643e}#app .rd-item.no .v{color:#a62b45}#app .rd-item.skip .v{color:#805100}
#app #home{min-width:120px;white-space:nowrap}#app #retry{margin-right:0!important}#app .filter-row{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0}
#app .filter-btn{font-size:14px;min-height:44px;padding:8px 18px;border-radius:8px;border:1px solid #d5dfea;background:#fff;color:#40546b}#app .filter-btn.active{background:#edf4ff;color:#185aa8;border-color:#206bc4}
#app .review-item{padding:20px;border:1px solid #e3e9f0;border-left:1px solid #e3e9f0;border-radius:10px;background:#fff;margin:12px 0;line-height:1.75;overflow-wrap:anywhere}#app .review-item .rs{font-size:16px;margin-bottom:12px}#app .review-item .ra{font-size:14px;color:#40546b}
#app .quiz-drawer-backdrop{position:fixed;inset:0;z-index:9999;background:rgba(20,38,61,.25);border:0;padding:0;width:100%;height:100%;border-radius:0}
#app .quiz-drawer-backdrop[hidden]{display:none}
#app .q-stem,#app .otext{text-wrap:pretty}
#app .quiz-answer-map[open]::before{display:none!important}
@media(max-width:767px){#app .challenge-preview summary{min-height:44px}}
body:has(#app[aria-hidden="false"]){background-image:none}.app-shell:has(#app[aria-hidden="false"]){min-height:100dvh}
@media(max-width:1250px){#app .mode-btn{padding:20px 16px;gap:12px}#app .mode-indicator{display:none}#app .quiz-setup-layout{grid-template-columns:minmax(0,1fr) 260px}#app .quiz-layout{grid-template-columns:minmax(0,1fr) 240px}#app .quiz-section-label{display:grid;gap:5px}}
@media(max-width:767px){body:has(#app[aria-hidden="false"]) .workspace-topbar{height:auto!important;min-height:142px;display:flex;flex-wrap:wrap;padding:12px 16px;gap:12px}body:has(#app[aria-hidden="false"]) .workspace-search{height:50px;min-width:0;width:100%;flex-basis:100%;order:2}body:has(#app[aria-hidden="false"]) .workspace-user{min-width:0;width:100%;height:56px}
#app .quiz-page-header{gap:12px;align-items:flex-start;margin-bottom:20px}#app .quiz-page-header h1{font-size:26px}#app .quiz-page-header p{font-size:13px}#app .quiz-back{min-width:112px;padding:10px 12px}
#app .quiz-modes{grid-template-columns:1fr;gap:10px}#app .mode-btn{min-height:84px;padding:16px}#app .mode-indicator{display:block}#app .mode-copy .t{font-size:16px}
#app .quiz-setup-layout{display:block}#app .quiz-configuration{padding:0 18px;margin-bottom:18px}#app .quiz-setting-group{padding:20px 0}#app .opt-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}#app .level-grid{grid-template-columns:repeat(3,minmax(0,1fr))}#app .opt-btn{padding:12px;min-height:70px}#app .opt-btn strong{font-size:14px}#app .opt-btn .label{font-size:12px}
#app .quiz-setup-aside{position:static}#app .quiz-session-summary{padding:20px}#app .quiz-start{width:100%;min-height:48px}
#app .quiz-header{padding:14px 16px}#app .progress-wrap{gap:12px;flex-wrap:wrap}#app .progress-bar{min-width:80px}#app .submit-quick{padding:10px 14px}#app .progress-text,#app .score-live{font-size:13px}
#app .quiz-layout{display:flex;flex-direction:column;gap:16px}#app .quiz-main{width:100%}#app .quiz-main .card{padding:20px 16px}#app .q-stem{font-size:18px;line-height:1.75;margin:18px 0 22px}#app .option-item{padding:13px 12px;gap:10px;font-size:15px;min-height:58px;flex-wrap:wrap}#app .option-item .otext{flex-basis:calc(100% - 42px)}#app .option-state{margin-left:40px}
#app .quiz-nav{gap:8px;flex-wrap:wrap}#app .quiz-nav .btn{min-width:96px;padding:10px 12px;font-size:14px;min-height:44px;height:auto}#app .quiz-nav .confirm-answer{order:3;flex:1 0 100%!important}#app .quiz-nav .btn:last-child{margin-left:auto!important}
#app .quiz-answer-map{order:-1;position:static;width:100%;padding:14px 18px}#app .quiz-answer-map summary{min-height:44px;font-size:16px}#app .quiz-answer-map[open]{position:fixed;left:12px;right:12px;bottom:12px;top:auto;width:auto;z-index:10000;box-shadow:0 12px 32px rgba(20,42,70,.2);max-height:70dvh;padding:16px 18px 20px}#app .quiz-answer-map[open]::before{content:"";position:fixed;inset:0;background:rgba(20,38,61,.25);z-index:-1;pointer-events:none}#app .question-grid{grid-template-columns:repeat(6,minmax(0,1fr));max-height:45dvh}#app .question-number{min-height:44px}
#app .card{padding:20px 16px}#app .result-detail{gap:8px}#app .rd-item{padding:14px 8px}#app .rd-item .v{font-size:28px}#app .filter-btn{padding:8px 14px}#app .review-item{padding:16px}#app .feedback.show{padding:16px;font-size:14px}}

/* Compact screens put the live session summary before configuration in DOM order. */
@media(max-width:900px){
  #app>.quiz-session-summary{margin:0 0 18px;padding:18px}
  #app>.quiz-session-summary .quiz-section-label{display:flex;align-items:center;margin-bottom:10px}
  #app>.quiz-session-summary .session-facts{grid-template-columns:34px minmax(0,1fr) 34px minmax(0,1fr);gap:8px;margin:12px 0}
  #app>.quiz-session-summary .session-facts dd{text-align:left;font-size:13px;overflow-wrap:anywhere}
  #app>.quiz-session-summary .quiz-note{margin-top:10px;font-size:12px}
  #app>.quiz-session-summary .quiz-guest-note{margin-top:6px;font-size:12px}
  #app .quiz-setup-layout{display:block}
  #app .quiz-setup-aside:empty{display:none}
  #app .quiz-configuration{margin:0}
}

#app .quiz-error{padding:16px;margin:0 0 18px;border:1px solid #edb5bf;border-radius:10px;background:#fff1f3;color:#9f2336}
#app .browse-toolbar{position:sticky;top:0;z-index:15;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;background:#fff;border:1px solid #dfe6ee;border-radius:10px;padding:14px 18px;margin-bottom:20px}
#app .browse-toolbar select{min-height:44px;border:1px solid #bacbde;border-radius:8px;background:#fff;color:#182433;font:inherit;padding:8px}#app .browse-pagination{display:flex;justify-content:space-between;gap:12px;margin-bottom:24px}
@media(max-width:900px){#app .browse-toolbar{top:66px;padding:12px}#app .browse-toolbar>span{flex-basis:100%}}