/* Unit workspace: established blue opening, visible completion and compact practice tools. */
body:has(.native-unit){overflow-x:clip}
.native-unit{padding-top:0}
.native-unit .unit-cover-large{position:relative;isolation:isolate;margin-top:0;margin-bottom:36px;padding:40px 0;gap:40px;border:0}
.unit-cover-large::before{content:"";position:absolute;z-index:-1;inset:0 auto 0 50%;width:var(--brv-viewport-width,100%);transform:translateX(-50%);background:var(--blue)}
.native-unit .unit-cover-large h1,.native-unit .unit-cover-large .unit-back,.native-unit .unit-cover-large .unit-meta,.native-unit .unit-cover-large .unit-cover-copy>p{color:#fff}
.native-unit .unit-cover-large .unit-back:hover{color:var(--yellow)}
.unit-cover-large .unit-meta .level-label{color:#fff}
.unit-cover-large .unit-meta .access-badge{background:#fff;color:var(--blue);border-color:transparent}
.unit-cover-large .unit-meta .is-free{background:#E8F0E9;color:#294D3E}
.native-unit .unit-cover-large .button{background:var(--yellow);color:var(--ink)}
.native-unit .unit-cover-large .button:hover{background:var(--accent-hover)}
.native-unit a,.native-unit a:hover,.native-unit .text-button,.native-unit .text-button:hover,.lesson-overview a:hover .route-title{text-decoration:none}
.native-unit :is(a,button,input,select,textarea):focus-visible{outline:3px solid var(--blue);outline-offset:3px}
.native-unit .unit-cover :is(a,button):focus-visible{outline-color:var(--yellow)}
.native-workbook ::selection{background:var(--yellow);color:var(--ink)}
.native-workbook input,.native-workbook textarea{caret-color:var(--blue)}
.lesson-overview .step-done .route-image{border:2px solid #315F49;background:#E8F0E9}
.lesson-overview .step-done .route-number{background:#315F49;color:#fff}
.lesson-overview .step-done .route-check{display:none}
.route-done-label{display:flex;align-items:center;gap:4px;width:fit-content;margin:7px 3px 0;padding:3px 7px;background:#315F49;color:#fff;border-radius:8px;font-size:11px;line-height:1.4;font-weight:700}
.route-done-label svg{width:14px;height:14px;flex-shrink:0}
.route-done-label[hidden]{display:none}
.activity-complete-badge{display:inline-flex;align-items:center;gap:8px;background:#E8F0E9;color:#294D3E;font-size:14px;font-weight:700;padding:9px 12px;border-radius:8px;margin:0 0 20px}
.activity-complete-badge svg{width:19px;height:19px}
.activity-complete-badge[hidden],.course-stage-status:empty{display:none}
.course-stage-status{display:none}
.progress-sync{display:flex;align-items:center;justify-content:flex-end;gap:10px;font-size:12px;color:var(--muted);margin:-8px 0 16px;min-height:0}
.progress-sync:has(span:empty){display:none}
.progress-sync.has-error{color:#92382F;justify-content:flex-start;background:#FFF3F0;padding:10px 12px;border-radius:8px}
.progress-sync button{font-size:12px;padding:7px;min-height:44px}
.native-workbook .exercise-actions{gap:8px;margin:14px 0 0;padding:0;border:0}
.exercise-tool{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:44px;padding:8px 13px;border:0;border-radius:8px;font:700 13px/1.3 'DM Sans',sans-serif;cursor:pointer;color:var(--blue);background:var(--soft)}
.exercise-tool svg{width:19px;height:19px;flex-shrink:0}
.exercise-tool.tool-check{background:var(--blue);color:#fff}
.exercise-tool.tool-bulb{background:var(--accent-soft);color:var(--ink)}
.exercise-tool.tool-repeat{background:#E8F0E9;color:#294D3E}
.exercise-tool:hover{filter:brightness(.94)}
.exercise-tool:disabled{opacity:.5;cursor:default}
.native-workbook .exercise-result:empty,.field-feedback:empty{display:none}
.native-workbook .exercise-result:not(:empty){margin:12px 0 0;padding:12px 16px;font-size:14px}
.native-unit .activity-navigation{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:10px;margin:28px 0 0;padding-top:20px}
.native-unit .activity-navigation button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:44px;font-size:13px;padding:10px 14px;width:fit-content}
.native-unit .activity-navigation button:last-child{background:var(--blue);color:#fff}
.repeat-activity svg{width:18px;height:18px}
.native-unit .repeat-activity{color:var(--muted)}
.native-unit .repeat-activity:hover{color:var(--blue);background:var(--soft)}
.course-reading{max-width:72ch;font-size:18px;line-height:1.85;margin:24px 0 28px;text-align:left;overflow-wrap:break-word}
.course-reading :is(p,div,span){font-size:inherit;line-height:inherit;text-align:left}
.course-reading p{margin:0 0 1em}
.course-reading :is(h2,h3,h4){display:block;font:650 26px/1.3 Jost,sans-serif;color:var(--blue);margin:28px 0 14px}
.course-reading :is(h2,h3,h4):first-child{margin-top:0}
.course-reading :is(h2,h3,h4) :is(em,strong){font-style:normal;font-weight:inherit}
.course-reading strong{font-weight:700}
.course-reading :is(ul,ol){padding-left:1.4em}
.course-quiz{margin:18px 0 22px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.course-question{border:0;padding:0;margin:0 0 12px}
.course-question:last-child{margin-bottom:0}
.course-question legend{font-size:22px;line-height:1.4;padding-bottom:10px}
.course-question .quiz-option{min-width:100px;min-height:44px;padding:8px 13px;margin-bottom:0}
.course-quiz .exercise-actions{margin-top:10px}
.native-unit .unit-completion{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;margin:42px 0 48px;padding:32px;background:var(--soft);border:0;border-radius:14px;align-items:center}
.unit-completion h2{font-size:clamp(28px,3vw,36px);max-width:23ch;margin-bottom:14px}
.completion-main>.panel-progress{font-size:14px;font-weight:700;color:var(--blue);font-variant-numeric:tabular-nums;margin:0 0 9px}
.completion-main progress{display:block;appearance:none;width:100%;height:9px;accent-color:var(--blue);border:0;border-radius:8px;overflow:hidden;margin-bottom:18px;background:var(--line)}
.completion-main progress::-webkit-progress-bar{background:var(--line)}
.completion-main progress::-webkit-progress-value{background:var(--blue)}
.completion-main progress::-moz-progress-bar{background:var(--blue)}
.unit-is-complete .completion-main progress::-webkit-progress-value{background:#315F49}
.unit-panel-actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px}
.unit-panel-actions button,.unit-panel-actions a{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:44px;font-size:13px;padding:10px 13px}
.unit-panel-actions svg{width:18px;height:18px}
.unit-panel-actions button:disabled{opacity:1;background:#E8F0E9;color:#294D3E;cursor:default}
.unit-completion .completion-next{border:0;padding:0}
.unit-completion .completion-next>a{display:flex;flex-direction:column;align-items:flex-start;gap:9px}
.unit-completion .completion-next img{width:100%;max-width:none;height:auto;aspect-ratio:16/9;border-radius:10px;margin:0 0 5px}
.completion-next strong{font-size:25px}
.completion-next .completion-books{height:150px;object-fit:contain}
.unit-completion .completion-next h3{font-size:26px;margin:10px 0}
.unit-completion .reset-confirm{padding-top:12px;margin-top:12px;border-top:1px solid var(--line)}
.unit-completion .reset-confirm button{min-height:44px;margin:0 5px 8px 0}
@media(max-width:900px){.native-unit .unit-cover-large{gap:24px}.native-unit .unit-completion{gap:28px;padding:26px}.unit-cover-large .unit-cover-copy>p{font-size:15px}}
@media(max-width:700px){.native-unit .unit-cover-large{padding:28px 0;gap:24px;margin-bottom:28px}.native-unit .unit-cover-large h1{font-size:36px;max-width:none}.unit-cover-large .unit-cover-copy>p{font-size:16px}.native-unit .unit-completion{grid-template-columns:1fr;padding:24px;gap:28px;margin:32px 0}.unit-completion h2{max-width:none}.unit-completion .completion-next{padding-top:24px;border-top:1px solid var(--line)}.unit-completion .completion-next>a{align-items:center;text-align:center}.unit-completion .completion-next img{width:100%;max-width:420px;grid-row:auto}.unit-completion .completion-next{text-align:center}.course-reading{font-size:17px;line-height:1.8;max-width:100%}.course-reading :is(h2,h3,h4){font-size:24px}.native-unit .activity-navigation{grid-template-columns:1fr 1fr;gap:8px}.native-unit .activity-navigation button{font-size:12px;padding:10px;width:100%}.native-unit .activity-navigation .repeat-activity{grid-column:1/-1;grid-row:2;justify-self:center;width:fit-content}.course-question .quiz-option{display:inline-flex;width:auto;margin-right:6px}.native-workbook .exercise-actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.exercise-tool{padding:8px 6px;font-size:12px;gap:5px}.exercise-tool svg{width:17px;height:17px}.native-unit .unit-panel-actions{display:grid;grid-template-columns:1fr}.unit-panel-actions button,.unit-panel-actions a{width:100%}.route-done-label{font-size:11px;padding:3px 5px}.activity-complete-badge{font-size:13px}.progress-sync{margin:0 0 12px}}
@media(prefers-reduced-motion:no-preference){.route-done-label{animation:brv-completed-in .24s ease-out both}@keyframes brv-completed-in{from{opacity:.5;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}}

.lesson-overview a.step-done[aria-current=step] .route-image{border-color:#315F49;background:#E8F0E9}
@media(max-width:600px){.lesson-overview .workbook-top h2{font-size:24px;white-space:nowrap;flex-shrink:0}.native-workbook .exercise-actions:has(>button:only-child){display:flex}.native-workbook .exercise-actions:has(>button:nth-child(2):last-child){grid-template-columns:repeat(2,minmax(0,1fr))}}

/* A compact action rail. Labels stay available to pointer, keyboard and assistive technology. */
.native-unit .native-workbook .exercise-actions{display:flex;justify-content:flex-end;flex-wrap:nowrap;gap:8px;margin:10px 0 0;padding:0}
.native-unit .exercise-tool{position:relative;flex:0 0 44px;width:44px;height:44px;min-width:44px;min-height:44px;padding:0;gap:0;overflow:visible}
.native-unit .exercise-tool>svg{width:21px;height:21px}
.exercise-tooltip{position:absolute;right:0;bottom:calc(100% + 8px);z-index:4;width:max-content;max-width:220px;padding:7px 10px;border-radius:8px;background:var(--ink);color:#fff;font:500 12px/1.4 'DM Sans',sans-serif;text-align:center;white-space:normal;pointer-events:none;visibility:hidden;opacity:0}
.exercise-tool:is(:hover,:focus)>.exercise-tooltip{visibility:visible;opacity:1}
.exercise-tool[data-tooltip-dismissed]>.exercise-tooltip{visibility:hidden;opacity:0}
.unit-completion .discovery-invitation{display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center}
.unit-completion .completion-next .discovery-illustration{display:block;width:min(100%,340px);height:auto;aspect-ratio:3/2;object-fit:contain;border-radius:0;margin:0}
.unit-completion .discovery-invitation h3{font-size:clamp(25px,2.4vw,30px);line-height:1.2;max-width:22ch;margin:0}
.unit-completion .discovery-link{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:44px;padding:10px 15px;border:1px solid var(--blue);border-radius:10px;color:var(--blue);font-size:14px;font-weight:700;line-height:1.4;text-decoration:none}
.unit-completion .discovery-link svg{display:block;width:20px;height:20px;flex:none}
.unit-completion .discovery-link:hover{background:var(--blue);color:#fff}
@media(min-width:701px){.quiz-inline-tools{display:grid;grid-template-columns:minmax(0,1fr) auto;column-gap:24px;align-items:end}.quiz-inline-tools>.course-question{grid-column:1;grid-row:1;margin:0}.native-unit .quiz-inline-tools>.exercise-actions{grid-column:2;grid-row:1;margin:0}.quiz-inline-tools>.exercise-result{grid-column:1/-1;grid-row:2}}
@media(max-width:700px){.unit-completion .completion-next.is-discovery{padding-top:20px}.unit-completion .completion-next .discovery-illustration{width:min(100%,290px)}.exercise-tooltip{max-width:190px}}

/* Answer choices must keep real space when they wrap to another row. */
.native-unit .quiz-options{display:flex;flex-wrap:wrap;align-items:stretch;gap:10px;margin:0}
.native-unit .quiz-options .quiz-option{display:flex;align-items:center;max-width:100%;min-height:44px;margin:0;padding:9px 13px;line-height:1.5}
.quiz-option span{min-width:0;overflow-wrap:anywhere}
.association-list{max-width:780px;display:grid;gap:0}
.association-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(180px,.8fr);gap:8px 24px;align-items:center;padding:15px 0;border-bottom:1px solid var(--line)}
.association-label{font-size:17px;color:var(--ink)}
.association-label{display:flex;align-items:center;gap:16px}.association-image{width:110px;height:100px;flex:none}.association-image img{width:100%;height:100%;object-fit:contain}
.association-row select{width:100%;min-height:46px;padding:10px 13px;border:1px solid #A6B3D0;border-radius:8px;background:#fff;color:var(--ink);font:400 16px/1.5 'DM Sans',sans-serif}
.association-row .field-feedback{grid-column:1/-1;margin:0}
@media(min-width:701px){.native-unit .course-figure{max-width:520px}.native-unit .course-figure img{max-height:420px}.native-unit .course-prompt-image{height:210px}}
@media(max-width:700px){.native-unit .quiz-options{gap:10px}.native-unit .quiz-options .quiz-option{min-width:0;flex:0 1 auto;width:auto;font-size:15px}.association-row{grid-template-columns:1fr;gap:8px;padding:14px 0}.association-label{font-size:16px}.association-row select{font-size:16px}.native-unit .course-figure{max-width:100%}}

.learning-document{max-width:900px;padding:28px;margin:24px 0;background:var(--soft);border-radius:14px;font-size:16px;line-height:1.75;color:var(--ink)}
.learning-document :is(h4,h5,h6){display:block;color:var(--blue);font-family:Jost,sans-serif;line-height:1.3;text-align:left}
.learning-document h4{font-size:30px;margin:0 0 16px}.learning-document h5{font-size:22px;margin:22px 0 12px}.learning-document h6{font-size:18px;margin:18px 0 8px}
.learning-document p{margin:0 0 16px}.learning-document ul{padding-left:20px;margin:0 0 20px}.learning-document li{margin:5px 0}
.learning-document header{padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:24px}.learning-document footer{font-size:14px;border-top:1px solid var(--line);padding-top:18px;margin-top:24px}
.document-columns{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.4fr);gap:32px}.document-columns>:first-child{min-width:0}.document-columns>:last-child{min-width:0}
.document-email{overflow-wrap:anywhere}.grammar-comparison{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 28px}.grammar-comparison section{border-bottom:1px solid var(--line);padding-bottom:12px}.grammar-comparison h5{margin-top:0}
.grammar-comparison-three{grid-template-columns:repeat(3,minmax(0,1fr))}
.learning-document .learning-document-logo{display:block;width:150px;height:auto;margin:24px 0 0 auto;max-height:none}
.native-unit .cloze-text{white-space:pre-line;line-height:2.5}.native-unit .cloze-text p{margin:0 0 16px}.native-unit .cloze-text h4{font-size:24px;line-height:1.35;white-space:normal}
.native-unit .course-video-link{display:flex;align-items:center;justify-content:center;gap:8px;min-height:44px;width:fit-content;margin:8px auto 0;font-size:14px}
.course-story-card{text-align:center;background:var(--soft);padding:24px;border-radius:14px;max-width:620px;margin:24px auto}.course-story-card h4{font:650 28px/1.25 Jost,sans-serif;color:var(--blue);margin:0 0 8px}.course-story-card>p{font-size:16px;margin:0 0 12px}.course-story-card .course-figure{margin:0 auto}
.course-mark .reading-text{max-width:72ch;padding:0;margin:20px 0;font-size:18px;line-height:2.15;background:transparent;border:0;border-radius:0;text-align:left}
.course-mark .reading-text p{margin:0 0 1.15em}
.course-mark .reading-text .word-token{display:inline;min-width:0;min-height:0;margin:0;padding:3px 2px;border:0;border-radius:3px;background:transparent;color:inherit;font:inherit;line-height:inherit;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.course-mark .reading-text .word-token:hover{background:var(--soft);color:var(--blue)}
.course-mark .reading-text .word-token[aria-pressed=true]{background:var(--blue);color:#fff}
.course-mark .reading-text .word-token.answer-correct{background:#E8F0E9;color:#294D3E}
.course-mark .reading-text .word-token.answer-wrong{background:#FFF3F0;color:#92382F}
@media(max-width:700px){.course-mark .reading-text{font-size:17px;line-height:2.15}}
@media(max-width:700px){.learning-document{padding:20px;font-size:16px;line-height:1.7}.learning-document h4{font-size:26px}.learning-document h5{font-size:22px}.document-columns,.grammar-comparison{grid-template-columns:1fr;gap:20px}.document-email{font-size:14px}.learning-document .learning-document-logo{width:130px}}