:root{--bg:#f4f6fb;--surface:#fff;--ink:#121a2b;--muted:#5b6578;--line:#e1e6f0;--header:#1f4fa3;--header-ink:#fff;--header-sub:#d5e1fa;--primary:#1546c7;--primary-ink:#1546c7;--on-primary:#fff;--primary-soft:#e2eafd;--red:#c0352b;--red-ink:#b02f26;--red-soft:#fbe3e0;--good:#0e7c73;--good-soft:#dff3f0;--lock:#e7eaf1;--warn-ink:#8a5a00;--warn-soft:#fff3dc;--radius-l:22px;--radius-m:14px;--measure:46rem;--font-body:"Atkinson Hyperlegible", system-ui, sans-serif;--font-head:"Bricolage Grotesque", system-ui, sans-serif;--font-arabic:"Noto Kufi Arabic", "Noto Naskh Arabic", sans-serif;color-scheme:light}@media 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h2{margin:0;font-size:1.45rem}.part-label{color:var(--primary-ink)}.part-translit{white-space:nowrap;font-family:var(--font-body);color:var(--muted);font-size:1rem;font-style:italic;font-weight:400}.part-ar{color:var(--primary-ink);margin-left:auto;font-size:1.5rem;font-weight:700}.part-head{cursor:pointer}.part-progress{font-size:.85rem;font-weight:700}.part-toggle{border:2px solid var(--line);background:var(--surface);width:40px;height:40px;color:var(--primary-ink);cursor:pointer;border-radius:10px;flex:none;place-items:center;display:grid}.part-toggle:hover{border-color:var(--primary);background:var(--primary-soft)}.part-toggle svg{transition:transform .2s}.part[data-open=false] .part-toggle svg{transform:rotate(-90deg)}.part[data-open=false] .part-head{border-bottom-color:var(--line)}.part-body[hidden]{display:none}@media (prefers-reduced-motion:reduce){.part-toggle svg{transition:none}}.chapter-head h3{margin:0;font-size:1.15rem}html{overflow-x:clip}.hero{color:var(--header-ink);gap:14px;margin-top:-24px;padding:40px 0 150px;display:grid;position:relative}.hero>*{position:relative}.hero-photo{pointer-events:none;background-color:var(--sky-base);background-image:var(--sky-veil), var(--sky-image);background-size:auto, var(--sky-size);background-position:0 0, var(--sky-x) top calc(-1 * var(--header-height));background-blend-mode:normal, screen;background-repeat:no-repeat;width:100vw;inset:0 auto 0 50%;transform:translate(-50%);-webkit-mask-image:linear-gradient(#000 calc(100% - 60px),#0000 100%);mask-image:linear-gradient(#000 calc(100% - 60px),#0000 100%);position:absolute!important}.hero h1{letter-spacing:-.02em;hyphens:manual;max-width:17ch;color:var(--header-ink);font-size:clamp(2.1rem,5.5vw,3.4rem);line-height:1.04}.hero h1 em{color:var(--header-sub);font-style:normal}.hero .lead{max-width:44ch;color:var(--header-sub);margin:0}.hero 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12px}.continue-ar{color:var(--red-ink);margin:0;font-size:1.6rem;font-weight:700}.home-grid .part:first-child{margin-top:0}.tabbar{display:none}@media (width<=720px){.site-nav{display:none}body{padding-bottom:76px}.tabbar{z-index:10;background:var(--surface);border-top:1px solid var(--line);padding:6px 4px calc(8px + env(safe-area-inset-bottom));grid-auto-columns:minmax(0,1fr);grid-auto-flow:column;display:grid;position:fixed;bottom:0;left:0;right:0}.tabbar a{min-height:52px;color:var(--muted);flex-direction:column;justify-content:center;align-items:center;gap:2px;font-size:.75rem;text-decoration:none;display:flex}.tabbar a[aria-current=page]{color:var(--primary-ink);font-weight:700}.hero-actions .btn{width:100%}}.info-tile{cursor:pointer;border:2px solid var(--primary);background:var(--surface);width:32px;height:32px;color:var(--primary-ink);border-radius:7px;flex:none;place-items:center;margin:6px;padding:0;display:grid;transform:rotate(45deg)}.info-tile>span{font-family:var(--font-head);font-size:.95rem;font-weight:700;transform:rotate(-45deg)}.info-tile:hover,.info-tile:focus-visible{background:var(--primary);color:var(--on-primary)}.info-tile:after{content:"";position:absolute;inset:-8px}.info-pop{border:1px solid var(--line);border-radius:var(--radius-l);background:var(--surface);max-width:min(26rem,100vw - 32px);color:var(--ink);margin:auto;padding:20px 22px;box-shadow:0 18px 48px #0b122040}.info-pop::backdrop{background:#0b122059}.info-pop p{margin:0 0 12px}.info-pop-title{font-family:var(--font-head);justify-content:space-between;align-items:baseline;gap:12px;font-size:1.25rem;font-weight:700;display:flex}.info-pop-title .ar{color:var(--primary-ink);font-size:1.4rem}.text-head{margin-bottom:18px}.text-title{color:var(--primary-ink);text-align:left;margin:0;font-size:2.6rem;font-weight:700}.matn-section h2{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:12px;display:flex}.matn-seg{padding-top:18px;position:relative}.seg-no{color:var(--muted);font-size:.8rem;font-weight:700;text-decoration:none;position:absolute;top:14px;left:18px}.seg-ar{text-align:right;margin:8px 0 10px;font-size:clamp(1.2rem,1rem + 1.2vw,1.6rem);line-height:2}.seg-en{margin:0 0 12px}.text-ref{border-top:1px solid var(--line);color:var(--ink);gap:2px;padding:10px 0;text-decoration:none;display:grid}.text-ref:first-of-type{border-top:0}.text-ref .ar{text-align:right;font-size:clamp(1.05rem,.95rem + .6vw,1.25rem)}.practice-list{gap:12px;margin:20px 0 0;padding:0;list-style:none;display:grid}.practice-link{color:var(--ink);justify-content:space-between;align-items:center;gap:12px;text-decoration:none;display:flex}.practice-link:hover{border-color:var(--primary)}.practice-link[data-state=done]{border-color:var(--good)}.practice-titles{gap:2px;display:grid}.practice-link .ar{color:var(--primary-ink);font-size:1.1rem}.practice-head h1 .ar{color:var(--primary-ink);white-space:nowrap;margin-inline-start:8px;font-size:.6em}.practice-head .muted{margin-top:4px}.quiz{margin:20px 0 0;padding:0;list-style:none}.quiz .question+.question{margin-top:14px}.question[data-state=right]{border-color:var(--good)}.question[data-state=wrong]{border-color:var(--red)}.q-prompt{margin:6px 0 0;font-size:1.08rem;font-weight:700}.q-ar{color:var(--primary-ink);margin:8px 0 0;font-size:1.3rem}.options{gap:8px;margin-top:14px;display:grid}.option{border:1.5px solid var(--line);border-radius:var(--radius-m);background:var(--surface);width:100%;min-height:48px;color:var(--ink);font:inherit;text-align:start;cursor:pointer;align-items:center;gap:12px;padding:10px 14px;display:flex}.option:hover:not(:disabled){border-color:var(--primary);background:var(--primary-soft)}.option:disabled{cursor:default}.option-key{border:1.5px solid var(--line);width:26px;height:26px;color:var(--muted);border-radius:6px;flex:none;place-items:center;font-size:.8rem;font-weight:700;display:grid;transform:rotate(45deg)}.option-key>span{line-height:1;transform:rotate(-45deg)}.option[data-state=right]{border-color:var(--good);background:var(--good-soft)}.option[data-state=right] .option-key{background:var(--good);border-color:var(--good);color:var(--surface)}.option[data-state=wrong]{border-color:var(--red);background:var(--red-soft)}.option[data-state=wrong] .option-key{background:var(--red);border-color:var(--red);color:#fff}.option:disabled:not([data-state]){opacity:.6}.feedback{border-top:1px solid var(--line);margin-top:14px;padding-top:12px}.feedback p{margin:0 0 6px}.verdict{font-weight:700}.question[data-state=right] .verdict{color:var(--good)}.question[data-state=wrong] .verdict{color:var(--red-ink)}.practice-end{margin-top:20px}.chapter-practice{color:var(--primary-ink);align-items:center;gap:8px;margin-top:12px;font-weight:700;text-decoration:none;display:inline-flex}.chapter-practice:before{content:"";border:2px solid var(--primary);border-radius:2px;width:10px;height:10px;transform:rotate(45deg)}.seg-page{margin:4px 0 0;font-size:.8rem}.text-head .badges{margin-top:10px}.complete{text-align:center;padding:32px 22px}.complete-tile{margin-bottom:16px;display:inline-grid}.complete-tile .tile{width:56px;height:56px;box-shadow:0 0 0 6px var(--primary-soft);font-size:1.4rem}.complete h1{margin:6px 0 8px}.complete h1 .ar{color:var(--primary-ink);margin-top:4px;font-size:.7em;display:block}.complete-missing,.complete-second{margin-top:4px;max-width:52ch;margin-inline:auto}.complete-actions{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:22px;display:flex}.complete-practice{display:flex}@media (width<=720px){.complete-actions .btn{width:100%}.part-head{grid-template-columns:auto minmax(0,1fr) auto;grid-template-areas:"tile titles toggle""tile ar progress";align-items:center;gap:2px 12px;display:grid}.part-head>.tile-wrap{grid-area:tile}.part-head>.part-titles{grid-area:titles;min-width:0}.part-head>.part-toggle{grid-area:toggle}.part-head>.part-ar{text-align:start;grid-area:ar;margin:0;font-size:1.25rem}.part-head>.part-progress{grid-area:progress;justify-self:center}.part-head h2{font-size:1.2rem}.part-head .part-translit{display:none}.part-head .part-titles{flex-wrap:nowrap;gap:8px}}.search{border:1px solid var(--line);border-radius:var(--radius-l);background:var(--surface);width:min(40rem,100vw - 32px);max-height:min(36rem,100dvh - 96px);color:var(--ink);flex-direction:column;margin:72px auto auto;padding:0;display:none;overflow:hidden;box-shadow:0 24px 60px #00000040}.search[open]{display:flex}.search::backdrop{background:#080e1c73}.search-bar{border-bottom:1px solid var(--line);color:var(--primary-ink);align-items:center;gap:10px;padding:12px 14px;display:flex}.search-bar input{min-width:0;color:var(--ink);font:inherit;background:0 0;border:0;outline:none;flex:1;padding:6px 0;font-size:1.1rem}.search-bar input::-webkit-search-cancel-button{display:none}.search-close{border:1.5px solid var(--line);color:var(--muted);font:inherit;cursor:pointer;background:0 0;border-radius:8px;padding:4px 8px;font-size:.8rem}.search-hint{margin:0;padding:14px 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