:root{color-scheme:light;--ink:#173247;--muted:#526677;--paper:#f8faf9;--surface:#fff;--blue:#dfeef5;--line:#d9e3e8;--accent:#285b77;--radius:18px}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}button,input,select,textarea{font:inherit;color:inherit}button,a,input,select,textarea,summary{-webkit-tap-highlight-color:transparent}button,.button{border:1px solid var(--line);border-radius:10px;padding:.55rem .9rem;background:var(--surface);cursor:pointer;text-decoration:none;display:inline-flex;gap:.4rem;align-items:center;justify-content:center}button:hover,.button:hover{border-color:var(--accent);background:#f0f7fa}button:disabled{opacity:.55;cursor:not-allowed}a{color:var(--accent)}:focus-visible{outline:3px solid var(--accent);outline-offset:4px}.skip-link{position:absolute;left:1rem;top:-5rem;background:white;padding:1rem;z-index:9}.skip-link:focus{top:1rem}.course-header{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:1.15rem clamp(1rem,4vw,4rem);border-bottom:1px solid var(--line);background:rgba(248,250,249,.96)}.brand{font-size:1.7rem;font-weight:650;text-decoration:none;letter-spacing:-.05em;color:var(--ink)}.brand span{font-size:.76rem;display:block;font-weight:450;letter-spacing:.025em;color:var(--muted)}.header-tools{display:flex;align-items:center;gap:1rem}.header-tools label{display:flex;align-items:center;gap:.5rem}select,input[type=search],textarea{border:1px solid var(--line);border-radius:10px;padding:.6rem;background:var(--surface);max-width:100%}.course-layout{max-width:1440px;margin:auto;padding:2.4rem clamp(1rem,3vw,3rem);display:grid;grid-template-columns:270px minmax(0,1fr);gap:clamp(1.6rem,4vw,4rem)}.course-index{min-width:0}.course-index h1{font-size:2rem;line-height:1.25;letter-spacing:-.045em;margin:.7rem 0 1rem}.eyebrow{font-size:.7rem;letter-spacing:.14em;font-weight:650;color:var(--muted)}#course-count{color:var(--muted);font-size:.85rem}.search-label{display:grid;gap:.35rem;font-size:.82rem}.check-label{display:flex;gap:.5rem;align-items:flex-start;font-size:.8rem;margin:1rem 0}.check-label input{margin-top:.4rem}#lesson-index{display:grid;gap:.45rem;max-height:65vh;overflow:auto;padding:.3rem .6rem .6rem .2rem;position:sticky;top:1rem}#lesson-index button{display:block;text-align:left;font-size:.82rem;padding:.8rem;line-height:1.45;background:transparent}#lesson-index button[aria-current=true]{background:var(--blue);border-color:#a5c2d1}#lesson-index .index-meta{display:block;color:var(--muted);font-size:.7rem;margin-bottom:.3rem}.course-workspace{min-width:0}.workspace-bar{display:flex;gap:1rem;justify-content:space-between;align-items:center;flex-wrap:wrap}.mode-tabs{display:flex;gap:.4rem;flex-wrap:wrap}.mode-tabs button{font-size:.85rem}.mode-tabs button[aria-pressed=true]{background:var(--ink);color:white;border-color:var(--ink)}.voice-label{display:flex;gap:.4rem;align-items:center;font-size:.75rem;max-width:100%}.voice-label select{max-width:220px;font-size:.75rem}.status{min-height:1.5rem;font-size:.82rem;color:var(--muted);margin:1rem 0}.mobile-picker{display:none}.lesson-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(1.15rem,3vw,2.8rem);box-shadow:0 10px 40px rgba(23,50,71,.025);overflow-wrap:anywhere}.lesson-card h1{font-size:clamp(1.7rem,3vw,2.65rem);line-height:1.2;letter-spacing:-.035em;margin:.6rem 0 1rem}.lesson-card h2{font-size:1.15rem;line-height:1.4;letter-spacing:-.01em}.lesson-card h3{font-size:1rem;line-height:1.5}.lesson-card p{margin:.7rem 0}.lesson-card .outcome{color:var(--muted);font-size:1.05rem;max-width:65ch}.lesson-card section{margin-top:2.4rem}.lesson-card .body-text{max-width:72ch;white-space:pre-line}.lesson-card details{border-top:1px solid var(--line);padding-top:1rem;margin:1.2rem 0}.lesson-card summary{cursor:pointer;font-weight:550}.lesson-card .meta{display:flex;gap:.5rem;flex-wrap:wrap;font-size:.72rem;color:var(--muted)}.meta span{padding:.18rem .55rem;border:1px solid var(--line);border-radius:20px}.connection{padding:1rem;border-left:3px solid #abc9da;background:#f4f9fb;margin-top:1.5rem;font-size:.9rem}.connection a{display:block;margin:.3rem 0}.example{border:1px solid var(--line);border-radius:12px;padding:1rem 1.2rem;margin:.8rem 0}.target-row{display:flex;gap:1rem;align-items:flex-start;justify-content:space-between}.target{font-size:1.18rem;font-weight:520;margin:0;white-space:pre-line;min-width:0}.target[lang=ar]{font-family:"Amiri","Noto Naskh Arabic","Traditional Arabic",serif;font-size:1.65rem;line-height:1.9}.translation{color:var(--muted);font-size:.95rem}.nuance{font-size:.86rem;color:var(--muted)}.mini{padding:.25rem .6rem;font-size:.75rem;flex-shrink:0}.notice{padding:.8rem 1rem;border:1px solid #c9d9e2;border-radius:10px;font-size:.85rem;background:#f1f7fa}.practice{border:1px solid var(--line);border-radius:14px;padding:1.1rem;margin:1rem 0}.practice fieldset{border:0;padding:0;margin:0}.practice legend{font-weight:550;margin-bottom:.7rem}.choice-option{display:flex;align-items:flex-start;gap:.6rem;padding:.45rem .25rem}.choice-option input{margin-top:.5rem;flex-shrink:0}.practice input[type=text]{border:1px solid var(--line);padding:.6rem;width:100%;border-radius:8px;margin:.5rem 0}.practice .feedback{padding:.7rem;border-left:3px solid var(--accent);font-size:.9rem}.practice details{font-size:.85rem}.task-box{padding:1.3rem;background:#f2f7fa;border-radius:14px}.task-box textarea{width:100%;min-height:150px;resize:vertical;line-height:1.7}.rubric{padding-left:1.25rem;font-size:.9rem}.lesson-footer{display:flex;flex-wrap:wrap;gap:.65rem;justify-content:space-between;border-top:1px solid var(--line);padding-top:1.5rem;margin-top:2rem}.primary{background:var(--ink);color:white;border-color:var(--ink)}.primary:hover{background:var(--accent);color:white}.review-controls{display:flex;flex-wrap:wrap;gap:.5rem}.vocabulary-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.vocab-item{padding:.8rem;border:1px solid var(--line);border-radius:10px}.reading-text{font-size:1.15rem;line-height:1.9;white-space:pre-line}.reading-text[lang=ar]{font-size:1.7rem;font-family:"Amiri","Noto Naskh Arabic","Traditional Arabic",serif}.audit-table{width:100%;border-collapse:collapse;font-size:.85rem}.audit-table th,.audit-table td{text-align:left;border-bottom:1px solid var(--line);padding:.7rem .4rem;vertical-align:top}.audit-table th{font-weight:600}.course-footer{max-width:1100px;margin:0 auto;padding:1.5rem 1rem 2.5rem;color:var(--muted);font-size:.78rem;text-align:center}.save-note{font-size:.78rem;color:var(--muted)}[hidden]{display:none!important}@media(max-width:950px){.course-layout{display:block;max-width:900px}.course-index{display:none}.mobile-picker{display:grid;gap:.4rem;font-size:.85rem;margin-bottom:1rem}.workspace-bar{gap:.65rem}.lesson-card{padding:1.4rem}}@media(max-width:520px){.course-header{padding:1rem;align-items:flex-start}.brand{font-size:1.4rem}.brand span{font-size:.65rem}.header-tools{gap:.45rem;flex-direction:column;align-items:flex-end}.header-tools label{font-size:.8rem}.header-tools .button{font-size:.75rem;padding:.3rem .5rem}.course-layout{padding:1.3rem .75rem}.lesson-card{padding:1.1rem}.vocabulary-list{grid-template-columns:1fr}.target-row{gap:.5rem}.mode-tabs{gap:.3rem}.mode-tabs button{font-size:.77rem;padding:.45rem .55rem}.lesson-footer>*{flex:1 1 auto}.audit-table{font-size:.73rem}.audit-table th,.audit-table td{padding:.45rem .2rem}}@media(prefers-reduced-motion:no-preference){button,.button{transition:background-color .15s,border-color .15s}}@media print{.course-header,.course-index,.workspace-bar,.mobile-picker,.lesson-footer,.course-footer,.skip-link,button,.review-controls{display:none!important}.course-layout{display:block;padding:0}.lesson-card{border:0;box-shadow:none;padding:0}.lesson-card details{break-inside:avoid}.practice{break-inside:avoid}body{background:white}}
/* Native selects otherwise contribute a long option's intrinsic grid width. */
.mobile-picker{min-width:0}.mobile-picker select{width:100%;min-width:0;max-width:100%}