:root{--c-petrol-900: #083a46;--c-petrol-800: #0b4a58;--c-petrol-700: #0f5c6e;--c-petrol-600: #146f84;--c-petrol-500: #1a8198;--c-petrol-100: #d9eef3;--c-petrol-50: #eef7f9;--c-blue-700: #1b5fb8;--c-blue-600: #2170d8;--c-blue-500: #2a7de1;--c-blue-100: #dbe9fb;--c-blue-50: #eef4fd;--c-white: #ffffff;--c-bg: #ffffff;--c-bg-soft: #f6f9fa;--c-bg-muted: #eef2f4;--c-border: #dde5e9;--c-border-strong: #c4d0d6;--c-text: #142a32;--c-text-2: #3f5861;--c-text-3: #6b8089;--c-text-inverse: #ffffff;--c-success-700: #1f7a4a;--c-success-100: #dcf3e6;--c-warning-700: #8a5a00;--c-warning-100: #fdf0d2;--c-danger-700: #b23a3a;--c-danger-100: #fbe3e3;--c-info-700: var(--c-blue-700);--c-info-100: var(--c-blue-100);--font-sans: "Times New Roman", "Noto Naskh Arabic", Times, "Traditional Arabic", serif;--font-book-ar: "Noto Naskh Arabic", "Amiri", "Traditional Arabic", "Times New Roman", serif;--font-amiri: "Amiri", "Noto Naskh Arabic", "Traditional Arabic", "Times New Roman", serif;--font-book-en: "Lora", Georgia, "Times New Roman", serif;--font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--fs-xs: .8125rem;--fs-sm: .9rem;--fs-md: 1rem;--fs-lg: 1.125rem;--fs-xl: 1.375rem;--fs-2xl: 1.75rem;--fs-3xl: 2.25rem;--fs-4xl: 2.9rem;--lh-tight: 1.25;--lh-normal: 1.65;--lh-reading: 1.95;--s-1: .25rem;--s-2: .5rem;--s-3: .75rem;--s-4: 1rem;--s-5: 1.25rem;--s-6: 1.5rem;--s-8: 2rem;--s-10: 2.5rem;--s-12: 3rem;--s-16: 4rem;--s-20: 5rem;--r-sm: 6px;--r-md: 10px;--r-lg: 14px;--r-xl: 20px;--r-full: 999px;--shadow-sm: 0 1px 2px rgba(8, 58, 70, .06);--shadow-md: 0 4px 14px rgba(8, 58, 70, .08);--shadow-lg: 0 12px 32px rgba(8, 58, 70, .12);--container: 1200px;--header-h: 64px;--focus-ring: 0 0 0 3px rgba(42, 125, 225, .45);--t-fast: .12s;--t-base: .2s;--ease: cubic-bezier(.2, .7, .2, 1)}@media(prefers-reduced-motion:reduce){:root{--t-fast: 0ms;--t-base: 0ms}*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}:root{--subj-arabic: #0f5c6e;--subj-arabic-deep: #083a46;--subj-arabic-soft: #e3f1f5;--subj-islamic: #1e7a4f;--subj-islamic-deep: #115233;--subj-islamic-soft: #e2f3e9;--subj-math: #b4560e;--subj-math-deep: #7c3a07;--subj-math-soft: #fdeedd;--subj-english: #5b45b8;--subj-english-deep: #3d2d85;--subj-english-soft: #ebe7fa;--subj-science: #1b5fb8;--subj-science-deep: #123f7c;--subj-science-soft: #e3edfb;--subj-social: #8a5a00;--subj-social-deep: #5e3d00;--subj-social-soft: #f7eed8}.subj-arabic{--subj: var(--subj-arabic);--subj-deep: var(--subj-arabic-deep);--subj-soft: var(--subj-arabic-soft)}.subj-islamic{--subj: var(--subj-islamic);--subj-deep: var(--subj-islamic-deep);--subj-soft: var(--subj-islamic-soft)}.subj-math{--subj: var(--subj-math);--subj-deep: var(--subj-math-deep);--subj-soft: var(--subj-math-soft)}.subj-english{--subj: var(--subj-english);--subj-deep: var(--subj-english-deep);--subj-soft: var(--subj-english-soft)}.subj-science{--subj: var(--subj-science);--subj-deep: var(--subj-science-deep);--subj-soft: var(--subj-science-soft)}.subj-social{--subj: var(--subj-social);--subj-deep: var(--subj-social-deep);--subj-soft: var(--subj-social-soft)}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;font-family:var(--font-sans);font-size:var(--fs-md);line-height:var(--lh-normal);color:var(--c-text);background:var(--c-bg);min-height:100dvh;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}#root{min-height:100dvh;display:flex;flex-direction:column}h1,h2,h3,h4{margin:0 0 var(--s-3);line-height:var(--lh-tight);color:var(--c-petrol-900);font-weight:800;letter-spacing:0;text-wrap:balance}h1{font-size:var(--fs-3xl)}h2{font-size:var(--fs-2xl)}h3{font-size:var(--fs-xl)}h4{font-size:var(--fs-lg)}p{margin:0 0 var(--s-4)}a{color:var(--c-blue-700);text-decoration:none;text-underline-offset:.2em}a:hover{text-decoration:underline}ul,ol{padding-inline-start:1.4em;margin:0 0 var(--s-4)}img,svg{max-width:100%;display:block}button,input,select,textarea{font:inherit;color:inherit}code,kbd{font-family:var(--font-mono);font-size:.92em;background:var(--c-bg-muted);padding:.1em .35em;border-radius:var(--r-sm)}:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:var(--r-sm)}::selection{background:var(--c-blue-100)}.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:absolute;inset-inline-start:var(--s-4);top:-3rem;background:var(--c-petrol-800);color:#fff;padding:var(--s-2) var(--s-4);border-radius:var(--r-md);z-index:100;transition:top var(--t-fast) var(--ease)}.skip-link:focus{top:var(--s-3)}.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:var(--s-4)}@media(min-width:768px){.container{padding-inline:var(--s-6)}}.text-muted{color:var(--c-text-3)}.text-2{color:var(--c-text-2)}.text-sm{font-size:var(--fs-sm)}.text-xs{font-size:var(--fs-xs)}.mt-2{margin-top:var(--s-2)}.mt-4{margin-top:var(--s-4)}.mt-6{margin-top:var(--s-6)}.mb-6{margin-bottom:var(--s-6)}.mb-0{margin-bottom:0}.row{display:flex;gap:var(--s-3);align-items:center;flex-wrap:wrap}.row-between{display:flex;gap:var(--s-3);align-items:center;justify-content:space-between;flex-wrap:wrap}.stack{display:flex;flex-direction:column;gap:var(--s-4)}.stack-sm{display:flex;flex-direction:column;gap:var(--s-2)}.grid-2,.grid-3{display:grid;gap:var(--s-4);grid-template-columns:1fr}@media(min-width:768px){.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:repeat(3,1fr)}}.grid-2>*,.grid-3>*,.stack>*,.dash-grid>*,.auth-wrap>*{min-width:0}.num{font-variant-numeric:tabular-nums}.ltr{direction:ltr;unicode-bidi:isolate}.rtl{direction:rtl;unicode-bidi:isolate}.math{direction:ltr;unicode-bidi:isolate;display:inline-block;font-variant-numeric:tabular-nums}@media(prefers-reduced-motion:no-preference){#root>*{animation:page-enter .28s ease-out both}}@keyframes page-enter{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--s-2);min-height:42px;padding:0 var(--s-4);border-radius:var(--r-md);border:1px solid transparent;font-weight:600;font-size:var(--fs-sm);line-height:1;cursor:pointer;text-decoration:none;white-space:nowrap;transition:background var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);user-select:none}.btn:hover{text-decoration:none}.btn:active{transform:translateY(1px)}.btn:disabled,.btn[aria-disabled=true]{opacity:.55;cursor:not-allowed;transform:none}.btn-primary{background:linear-gradient(180deg,var(--c-petrol-600),var(--c-petrol-700));color:#fff;box-shadow:inset 0 1px #ffffff2e}.btn-primary:hover{background:var(--c-petrol-800)}.btn-accent{background:var(--c-blue-600);color:#fff}.btn-accent:hover{background:var(--c-blue-700)}.btn-secondary{background:#fff;color:var(--c-petrol-800);border-color:var(--c-border-strong)}.btn-secondary:hover{background:var(--c-petrol-50);border-color:var(--c-petrol-500)}.btn-ghost{background:transparent;color:var(--c-petrol-800)}.btn-ghost:hover{background:var(--c-bg-muted)}.btn-danger{background:#fff;color:var(--c-danger-700);border-color:var(--c-danger-100)}.btn-danger:hover{background:var(--c-danger-100)}.btn-sm{min-height:34px;padding:0 var(--s-3);font-size:var(--fs-xs);border-radius:var(--r-sm)}.btn-lg{min-height:52px;padding:0 var(--s-8);font-size:var(--fs-md);border-radius:var(--r-full)}.btn-block{width:100%}.btn-icon{width:42px;padding:0}.btn-icon.btn-sm{width:34px}.card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:var(--s-5);box-shadow:var(--shadow-sm)}.card-soft{background:var(--c-bg-soft);border:1px solid var(--c-border);border-radius:var(--r-lg);padding:var(--s-5)}.card-title{font-size:var(--fs-lg);margin-bottom:var(--s-3)}.section{padding-block:var(--s-10)}.section-title{font-size:var(--fs-2xl);margin-bottom:var(--s-6)}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:var(--s-3);margin-bottom:var(--s-4);flex-wrap:wrap}.badge{display:inline-flex;align-items:center;gap:var(--s-1);padding:.15em .6em;border-radius:var(--r-full);font-size:var(--fs-xs);font-weight:600;line-height:1.6;background:var(--c-bg-muted);color:var(--c-text-2);white-space:nowrap}.badge-petrol{background:var(--c-petrol-100);color:var(--c-petrol-800)}.badge-blue{background:var(--c-blue-100);color:var(--c-blue-700)}.badge-success{background:var(--c-success-100);color:var(--c-success-700)}.badge-warning{background:var(--c-warning-100);color:var(--c-warning-700)}.badge-danger{background:var(--c-danger-100);color:var(--c-danger-700)}.alert{display:flex;gap:var(--s-3);align-items:flex-start;padding:var(--s-3) var(--s-4);border-radius:var(--r-md);border:1px solid var(--c-border);background:var(--c-bg-soft);font-size:var(--fs-sm);color:var(--c-text-2)}.alert .icon{flex:none;margin-top:2px}.alert-info{background:var(--c-info-100);border-color:transparent;color:var(--c-info-700)}.alert-success{background:var(--c-success-100);border-color:transparent;color:var(--c-success-700)}.alert-warning{background:var(--c-warning-100);border-color:transparent;color:var(--c-warning-700)}.alert-danger{background:var(--c-danger-100);border-color:transparent;color:var(--c-danger-700)}.field{display:flex;flex-direction:column;gap:var(--s-1);margin-bottom:var(--s-4)}.field label,.label{font-size:var(--fs-sm);font-weight:600;color:var(--c-text-2)}.field .help{font-size:var(--fs-xs);color:var(--c-text-3)}.field .error{font-size:var(--fs-xs);color:var(--c-danger-700)}.input,.select,.textarea{width:100%;min-height:44px;padding:var(--s-2) var(--s-3);border:1px solid var(--c-border-strong);border-radius:var(--r-md);background:#fff;transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease)}.input:focus,.select:focus,.textarea:focus{border-color:var(--c-blue-500);box-shadow:var(--focus-ring);outline:none}.input[aria-invalid=true],.textarea[aria-invalid=true]{border-color:var(--c-danger-700)}.textarea{min-height:96px;resize:vertical;line-height:var(--lh-normal)}.select{appearance:none;padding-inline-end:2.2rem;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%233f5861' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:left .8rem center}[dir=ltr] .select{background-position:right .8rem center}.checkbox{display:flex;gap:var(--s-2);align-items:flex-start;font-size:var(--fs-sm)}.checkbox input{margin-top:.3em;width:18px;height:18px;accent-color:var(--c-petrol-700)}.form-grid{display:grid;gap:0 var(--s-4);grid-template-columns:1fr}@media(min-width:640px){.form-grid{grid-template-columns:1fr 1fr}.form-grid .span-2{grid-column:span 2}}.table-wrap{overflow-x:auto;max-width:100%;border:1px solid var(--c-border);border-radius:var(--r-md);background:#fff}.table{width:100%;border-collapse:collapse;font-size:var(--fs-sm);min-width:520px}.table th,.table td{text-align:start;padding:var(--s-3);border-bottom:1px solid var(--c-border);vertical-align:top}.table th{background:var(--c-bg-soft);color:var(--c-text-2);font-weight:600;font-size:var(--fs-xs);letter-spacing:.01em}.table tr:last-child td{border-bottom:0}.table-compact td,.table-compact th{padding:var(--s-2) var(--s-3)}.tabs{display:flex;gap:var(--s-1);border-bottom:1px solid var(--c-border);overflow-x:auto;scrollbar-width:none}.tabs::-webkit-scrollbar{display:none}.tab{background:none;border:0;border-bottom:2px solid transparent;padding:var(--s-3) var(--s-3);color:var(--c-text-2);font-weight:600;font-size:var(--fs-sm);cursor:pointer;white-space:nowrap;margin-bottom:-1px}.tab[aria-selected=true]{color:var(--c-petrol-800);border-bottom-color:var(--c-petrol-700)}.tab:hover{color:var(--c-petrol-800)}.segmented{display:inline-flex;background:var(--c-bg-muted);border-radius:var(--r-md);padding:3px;gap:2px}.segmented button{display:inline-flex;align-items:center;gap:var(--s-1);border:0;background:transparent;padding:var(--s-2) var(--s-4);border-radius:var(--r-sm);font-weight:600;font-size:var(--fs-sm);color:var(--c-text-2);cursor:pointer;min-height:38px}.segmented button[aria-selected=true],.segmented button[aria-pressed=true]{background:#fff;color:var(--c-petrol-800);box-shadow:var(--shadow-sm)}.empty{padding:var(--s-8) var(--s-4);text-align:center;color:var(--c-text-3);border:1px dashed var(--c-border-strong);border-radius:var(--r-lg);background:var(--c-bg-soft)}.empty .icon{margin:0 auto var(--s-3);color:var(--c-petrol-500)}.spinner{width:20px;height:20px;border:2px solid var(--c-border-strong);border-top-color:var(--c-petrol-700);border-radius:50%;animation:spin .8s linear infinite;flex:none}@keyframes spin{to{transform:rotate(360deg)}}.skeleton{background:linear-gradient(90deg,var(--c-bg-muted) 25%,var(--c-bg-soft) 50%,var(--c-bg-muted) 75%);background-size:200% 100%;animation:shimmer 1.4s infinite;border-radius:var(--r-sm);min-height:1em}@keyframes shimmer{to{background-position:-200% 0}}.loading-row{display:flex;gap:var(--s-2);align-items:center;color:var(--c-text-3);font-size:var(--fs-sm)}.modal-backdrop{position:fixed;inset:0;background:#083a4659;display:flex;align-items:flex-end;justify-content:center;z-index:60;padding:var(--s-4)}@media(min-width:640px){.modal-backdrop{align-items:center}}.modal{background:#fff;border-radius:var(--r-xl);width:min(100%,520px);max-height:90dvh;overflow:auto;padding:var(--s-6);box-shadow:var(--shadow-lg)}.modal h3{margin-bottom:var(--s-4)}.icon{width:20px;height:20px;flex:none}.icon-sm{width:16px;height:16px}.icon-lg{width:28px;height:28px}.icon-flip-rtl{transform:scaleX(1)}[dir=rtl] .icon-flip-rtl{transform:scaleX(-1)}.stat{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:var(--s-4) var(--s-5)}.stat .value{font-size:var(--fs-2xl);font-weight:600;color:var(--c-petrol-800);line-height:1.1}.stat .label{font-size:var(--fs-xs);color:var(--c-text-3);font-weight:500}.stats{display:grid;gap:var(--s-3);grid-template-columns:repeat(2,1fr)}@media(min-width:768px){.stats{grid-template-columns:repeat(4,1fr)}}.progress{height:8px;background:var(--c-bg-muted);border-radius:var(--r-full);overflow:hidden}.progress>span{display:block;height:100%;background:var(--c-petrol-600);border-radius:var(--r-full)}.toast{position:fixed;bottom:calc(var(--s-4) + env(safe-area-inset-bottom));inset-inline-start:50%;transform:translate(-50%);background:var(--c-petrol-900);color:#fff;padding:var(--s-3) var(--s-5);border-radius:var(--r-full);font-size:var(--fs-sm);box-shadow:var(--shadow-lg);z-index:80}[dir=rtl] .toast{transform:translate(50%)}.site-header{position:sticky;top:0;z-index:50;background:#ffffffeb;backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--c-border)}.site-header .container{display:flex;align-items:center;gap:var(--s-4);min-height:var(--header-h)}.brand{display:inline-flex;align-items:center;gap:var(--s-2);color:var(--c-petrol-900);font-weight:700;font-size:var(--fs-lg);text-decoration:none;min-width:0;flex-shrink:1;line-height:1.15}@media(max-width:480px){.brand{font-size:var(--fs-md)}}.brand:hover{text-decoration:none}.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--c-petrol-700);display:grid;place-items:center;color:#fff;flex:none}.brand small{font-size:var(--fs-xs);color:var(--c-text-3);font-weight:500;display:none;line-height:1.1}@media(min-width:640px){.brand small{display:block}}.nav{display:none;align-items:center;gap:var(--s-1);margin-inline-start:var(--s-2)}.nav a{padding:var(--s-2) var(--s-3);border-radius:var(--r-md);color:var(--c-text-2);font-weight:600;font-size:var(--fs-sm)}.nav a:hover,.nav a[aria-current=page]{background:var(--c-petrol-50);color:var(--c-petrol-800);text-decoration:none}.header-actions{margin-inline-start:auto;display:flex;align-items:center;gap:var(--s-2)}.user-chip{display:none;align-items:center;gap:var(--s-2);padding:var(--s-1) var(--s-3);border-radius:var(--r-full);background:var(--c-bg-soft);border:1px solid var(--c-border);font-size:var(--fs-xs);color:var(--c-text-2)}.menu-toggle{display:inline-flex}@media(min-width:900px){.nav{display:flex}.user-chip{display:inline-flex}.menu-toggle{display:none}}.mobile-menu{border-top:1px solid var(--c-border);background:#fff;padding:var(--s-3) var(--s-4) var(--s-4);display:flex;flex-direction:column;gap:var(--s-1)}.mobile-menu a,.mobile-menu button{padding:var(--s-3);border-radius:var(--r-md);color:var(--c-text);font-weight:600;text-align:start;background:none;border:0;font-size:var(--fs-md)}.mobile-menu a:hover,.mobile-menu a[aria-current=page]{background:var(--c-petrol-50);text-decoration:none}@media(min-width:900px){.mobile-menu{display:none}}.lang-switch{font-weight:600;font-size:var(--fs-sm)}.site-footer{margin-top:auto;border-top:1px solid var(--c-border);background:var(--c-bg-soft);padding:var(--s-8) 0;font-size:var(--fs-sm);color:var(--c-text-2)}.site-footer .container{display:flex;flex-wrap:wrap;gap:var(--s-4) var(--s-8);justify-content:space-between;align-items:flex-start}.site-footer nav{display:flex;gap:var(--s-4);flex-wrap:wrap}.site-footer nav a{color:var(--c-text-2)}.page{flex:1;padding-block:var(--s-8) var(--s-12)}.page-head{display:flex;flex-wrap:wrap;gap:var(--s-3);align-items:flex-end;justify-content:space-between;margin-bottom:var(--s-6)}.page-head h1{font-size:var(--fs-2xl);margin:0}.page-head p{margin:var(--s-1) 0 0;color:var(--c-text-2)}.demo-strip{background:var(--c-warning-100);color:var(--c-warning-700);font-size:var(--fs-xs);text-align:center;padding:var(--s-1) var(--s-3);font-weight:600}.hero{position:relative;padding-block:var(--s-12) var(--s-10);background:radial-gradient(circle at 1px 1px,rgba(15,92,110,.14) 1px,transparent 1.5px) 0 0 / 22px 22px,linear-gradient(180deg,var(--c-petrol-50) 0%,#fff 85%);overflow:hidden}.hero:after{content:"";position:absolute;inset-inline-end:-120px;top:-160px;width:420px;height:420px;border-radius:50%;background:radial-gradient(closest-side,rgba(42,125,225,.16),transparent 70%);pointer-events:none}.hero .container{position:relative}.hero h1{font-weight:800;line-height:1.15}.hero h1 em{font-style:normal;color:var(--c-blue-600);position:relative;white-space:nowrap}.hero h1 em:after{content:"";position:absolute;inset-inline:0;bottom:.08em;height:.28em;background:var(--c-blue-100);z-index:-1;border-radius:4px}.hero-facts{display:flex;flex-wrap:wrap;gap:var(--s-2) var(--s-5);margin-top:var(--s-6);font-size:var(--fs-sm);color:var(--c-text-2)}.hero-facts span{display:inline-flex;align-items:center;gap:var(--s-2)}.hero-facts .icon{color:var(--c-petrol-600)}.hero .container{display:grid;gap:var(--s-8);align-items:center;grid-template-columns:1fr}@media(min-width:960px){.hero .container{grid-template-columns:1.05fr 1fr;gap:var(--s-12)}.hero{padding-block:var(--s-16) var(--s-12)}}.hero h1{font-size:clamp(2rem,4.6vw,var(--fs-4xl));margin-bottom:var(--s-4)}.hero .lead{font-size:var(--fs-lg);color:var(--c-text-2);max-width:44ch}.hero .note{color:var(--c-text-3);font-size:var(--fs-sm);max-width:48ch}.hero-actions{display:flex;gap:var(--s-3);flex-wrap:wrap;margin-top:var(--s-6)}.eyebrow{display:inline-flex;gap:var(--s-2);align-items:center;color:var(--c-petrol-700);font-weight:600;font-size:var(--fs-sm);margin-bottom:var(--s-4)}.preview-wrap{position:relative}.preview{border:1px solid var(--c-border);border-radius:var(--r-xl);background:#fff;box-shadow:var(--shadow-lg);overflow:hidden}@media(min-width:960px){.preview{transform:rotate(-1.2deg) translateY(6px)}}.preview-float{position:absolute;inset-inline-start:-14px;bottom:-18px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:var(--s-2) var(--s-3);box-shadow:var(--shadow-md);font-size:var(--fs-xs);color:var(--c-petrol-800);display:flex;gap:var(--s-2);align-items:center;max-width:240px}.preview-float .icon{color:var(--c-success-700)}@media(max-width:959px){.preview-float{position:static;margin-top:var(--s-3);max-width:none}}.preview-bar{display:flex;align-items:center;gap:var(--s-2);padding:var(--s-2) var(--s-3);border-bottom:1px solid var(--c-border);background:var(--c-bg-soft);font-size:var(--fs-xs);color:var(--c-text-3)}.preview-bar .dots{display:flex;gap:5px}.preview-bar .dots i{width:9px;height:9px;border-radius:50%;background:var(--c-border-strong);display:block}.preview-body{display:grid;grid-template-columns:1fr}@media(min-width:560px){.preview-body{grid-template-columns:1.1fr 1fr}}.preview-book{padding:var(--s-4);border-inline-end:1px solid var(--c-border);font-size:var(--fs-sm);line-height:var(--lh-reading)}.preview-book .pg{font-size:var(--fs-xs);color:var(--c-text-3);margin-bottom:var(--s-2)}.preview-book .q{background:var(--c-blue-50);border:1px solid var(--c-blue-100);border-radius:var(--r-md);padding:var(--s-2) var(--s-3);margin-top:var(--s-2)}.preview-help{padding:var(--s-4);background:var(--c-bg-soft);display:flex;flex-direction:column;gap:var(--s-2);font-size:var(--fs-sm)}.bubble{padding:var(--s-3);border-radius:var(--r-lg);line-height:var(--lh-normal);max-width:100%}.bubble-student{background:var(--c-petrol-700);color:#fff;align-self:flex-start;border-start-start-radius:4px}.bubble-assistant{background:#fff;border:1px solid var(--c-border);box-shadow:var(--shadow-sm);align-self:flex-end;border-start-end-radius:4px;min-width:0}.bubble .next{margin-top:var(--s-3);display:grid;gap:2px;padding:var(--s-2) var(--s-3);border-radius:var(--r-md);background:var(--c-petrol-50);border-inline-start:3px solid var(--c-petrol-600)}.bubble .next .next-k{display:inline-flex;gap:4px;align-items:center;font-size:var(--fs-xs);font-weight:800;color:var(--c-petrol-700)}.bubble .next .next-t{color:var(--c-petrol-900);font-weight:600}.bubble .src{margin-top:var(--s-2);font-size:var(--fs-xs);color:var(--c-text-3);display:flex;gap:var(--s-1);align-items:center}.steps{display:grid;gap:var(--s-4);grid-template-columns:1fr;counter-reset:step}@media(min-width:640px){.steps{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}.step{position:relative;padding:var(--s-5) var(--s-5) var(--s-5);border-top:3px solid var(--c-petrol-100);background:transparent}.step:before{counter-increment:step;content:counter(step);display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:#fff;border:2px solid var(--c-petrol-700);color:var(--c-petrol-800);font-weight:800;margin:-24px 0 var(--s-3);font-variant-numeric:tabular-nums}@media(min-width:1024px){.step:not(:last-child):after{content:"";position:absolute;top:-3px;inset-inline-end:calc(-1 * var(--s-4));width:var(--s-4);height:3px;background:var(--c-petrol-100)}}.step h3{font-size:var(--fs-lg);margin-bottom:var(--s-1)}.step p{margin:0;color:var(--c-text-2);font-size:var(--fs-sm)}.feature{display:flex;gap:var(--s-4);align-items:flex-start}.feature .fi{width:44px;height:44px;border-radius:12px;background:var(--c-blue-50);color:var(--c-blue-700);display:grid;place-items:center;flex:none}.feature h3{font-size:var(--fs-lg);margin-bottom:var(--s-1)}.feature p{color:var(--c-text-2);margin:0}.trust{background:var(--c-petrol-900);color:#fff;border-radius:var(--r-xl);padding:var(--s-8)}.trust h2{color:#fff}.trust ul{margin:0;padding:0;list-style:none;display:grid;gap:var(--s-3)}@media(min-width:768px){.trust ul{grid-template-columns:1fr 1fr}}.trust li{display:flex;gap:var(--s-3);align-items:flex-start;color:#d9eef3;line-height:var(--lh-normal)}.trust li .icon{color:#7fd1e3;margin-top:3px}.cta{text-align:center;padding:var(--s-10) var(--s-4);border:1px solid var(--c-border);border-radius:var(--r-xl);background:var(--c-bg-soft)}.cta h2{margin-bottom:var(--s-2)}.auth-wrap{display:grid;gap:var(--s-6);grid-template-columns:1fr;max-width:980px;margin-inline:auto}@media(min-width:860px){.auth-wrap{grid-template-columns:1fr 1fr}}.auth-card{padding:var(--s-6)}.demo-accounts{display:grid;gap:var(--s-2)}.demo-account{display:flex;align-items:center;justify-content:space-between;gap:var(--s-3);padding:var(--s-3);border:1px solid var(--c-border);border-radius:var(--r-md);background:#fff;font-size:var(--fs-sm)}.demo-account>div{min-width:0;overflow-wrap:anywhere}.demo-account code{font-size:var(--fs-xs);direction:ltr;unicode-bidi:isolate;display:inline-block;max-width:100%;overflow-wrap:anywhere}.filters{display:grid;gap:var(--s-3);grid-template-columns:repeat(2,1fr);margin-bottom:var(--s-6)}@media(min-width:768px){.filters{grid-template-columns:repeat(4,1fr)}}.filters .field{margin:0}.book-list{display:grid;gap:var(--s-4);grid-template-columns:1fr}@media(min-width:720px){.book-list{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}.book{display:grid;grid-template-columns:auto minmax(0,1fr);min-width:0;gap:var(--s-4);align-items:start}.book .bookcover{--bc-w: 96px}.book .bookcover .bc-sub{display:none}.book-cover{width:64px;height:84px;border-radius:8px;background:linear-gradient(160deg,var(--c-petrol-600),var(--c-blue-500));color:#fff;display:grid;place-items:center;font-weight:700;font-size:var(--fs-lg);box-shadow:var(--shadow-sm)}.book-cover.math{background:linear-gradient(160deg,var(--c-blue-700),var(--c-petrol-500))}.book h3{font-size:var(--fs-lg);margin-bottom:var(--s-1)}.book .meta{display:flex;flex-wrap:wrap;gap:var(--s-1) var(--s-2);font-size:var(--fs-xs);color:var(--c-text-3);margin-bottom:var(--s-3)}.lesson-list{margin:var(--s-3) 0 0;padding:0;list-style:none;display:grid;gap:var(--s-1);font-size:var(--fs-sm)}.lesson-list li a{display:flex;justify-content:space-between;gap:var(--s-2);padding:var(--s-2) var(--s-3);border-radius:var(--r-sm);color:var(--c-text)}.lesson-list li a:hover{background:var(--c-petrol-50);text-decoration:none}.lesson-list .pg,.unit-head .pg{color:var(--c-text-3);font-size:var(--fs-xs);white-space:nowrap;flex:none}.lesson-list li a:focus-visible,.unit-head:focus-visible{outline:none;box-shadow:var(--focus-ring);background:var(--c-petrol-50)}.lesson-list li a>span:first-child{min-width:0}.lesson-list .kind{display:inline-block;font-size:var(--fs-xs);color:var(--c-petrol-700);background:var(--c-petrol-50);border-radius:var(--r-full);padding:0 var(--s-2);margin-inline-end:var(--s-1)}.unit-head{display:flex;justify-content:space-between;gap:var(--s-2);padding:var(--s-2) var(--s-3);border-radius:var(--r-sm);color:var(--c-petrol-900);background:var(--c-bg-soft);border-inline-start:3px solid var(--c-petrol-600)}.unit-head:hover{text-decoration:none;background:var(--c-petrol-50)}.source-note{background:var(--c-bg-soft);border-radius:var(--r-sm);padding:var(--s-2) var(--s-3);line-height:1.6}.continue-card{display:flex;flex-wrap:wrap;gap:var(--s-4);align-items:center;justify-content:space-between;background:linear-gradient(135deg,var(--c-petrol-700),var(--c-petrol-500));color:#fff;border-radius:var(--r-xl);padding:var(--s-6)}.continue-card h2{color:#fff;font-size:var(--fs-xl);margin-bottom:var(--s-1)}.continue-card p{margin:0;color:#d9eef3}.skill-row{display:grid;gap:var(--s-1);padding:var(--s-3) 0;border-bottom:1px solid var(--c-border)}.skill-row:last-child{border-bottom:0}.skill-row .row-between{font-size:var(--fs-sm)}.session-item{display:flex;justify-content:space-between;gap:var(--s-3);align-items:center;padding:var(--s-3) 0;border-bottom:1px solid var(--c-border);font-size:var(--fs-sm)}.session-item:last-child{border-bottom:0}.learn{display:flex;flex-direction:column;height:calc(100dvh - var(--header-h));overflow:hidden}.learn-top{display:flex;align-items:center;gap:var(--s-2);padding:var(--s-2) var(--s-3);border-bottom:1px solid var(--c-border);background:#fff;flex-wrap:wrap}.learn-top .title{font-weight:600;font-size:var(--fs-sm);color:var(--c-petrol-900);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1 1 160px}.learn-body{flex:1;display:flex;min-height:0;position:relative}.reader{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;background:var(--c-bg-muted)}.reader-toolbar{display:flex;align-items:center;gap:var(--s-2);padding:var(--s-2) var(--s-3);background:#fff;border-bottom:1px solid var(--c-border);font-size:var(--fs-sm);flex-wrap:wrap}.reader-toolbar .spacer{flex:1}.page-input{width:64px;text-align:center;min-height:34px;padding:0 var(--s-2)}.reader-scroll{flex:1;overflow:auto;padding:var(--s-4);-webkit-overflow-scrolling:touch}.book-page{background:#fffdf8;border:1px solid #e6e0d2;border-radius:4px;max-width:760px;margin:0 auto;padding:var(--s-6) var(--s-8) var(--s-10);box-shadow:0 1px #e6e0d2,0 10px 24px #083a4614;line-height:2.05;font-size:1.15rem;font-family:var(--font-book-ar);color:#1f2a2e}.book-page.book-en{font-family:var(--font-book-en);line-height:1.8;font-size:1.08rem}.book-page h2,.book-page h3{font-family:var(--font-sans)}@media(max-width:480px){.book-page{padding:var(--s-4);font-size:var(--fs-md)}}.book-page .page-label{display:flex;justify-content:space-between;color:var(--c-text-3);font-size:var(--fs-xs);margin-bottom:var(--s-4);border-bottom:1px solid var(--c-border);padding-bottom:var(--s-2)}.block{margin-bottom:var(--s-4);border-radius:var(--r-md)}.block h2{font-size:var(--fs-xl);color:var(--c-petrol-800);margin-top:var(--s-2)}.block h3{font-size:var(--fs-lg);color:var(--c-petrol-700)}.block p:last-child,.block ol:last-child{margin-bottom:0}.block-rule{position:relative;background:var(--c-petrol-50);border:1px solid var(--c-petrol-100);border-inline-start:4px solid var(--c-petrol-600);padding:var(--s-4) var(--s-4) var(--s-3)}.block-example{background:var(--c-bg-soft);border:1px solid var(--c-border);padding:var(--s-3) var(--s-4)}.block-note{color:var(--c-text-2);font-size:.95em;padding:var(--s-2) var(--s-4);border-inline-start:2px dotted var(--c-border-strong)}.block-exercise{border:1px solid var(--c-blue-100);background:#fff;padding:var(--s-3) var(--s-4);display:flex;gap:var(--s-3);align-items:center;justify-content:space-between;flex-wrap:wrap}.block-exercise.active{border-color:var(--c-blue-500);background:var(--c-blue-50);box-shadow:0 0 0 1px var(--c-blue-500) inset}.block-exercise>div{flex:1 1 220px}.demo-note{margin-top:var(--s-6);font-size:var(--fs-xs);color:var(--c-warning-700);background:var(--c-warning-100);padding:var(--s-2) var(--s-3);border-radius:var(--r-sm);text-align:center}.selection-bar{position:sticky;bottom:0;margin-top:var(--s-4);background:var(--c-petrol-900);color:#fff;border-radius:var(--r-lg);padding:var(--s-3) var(--s-4);display:flex;gap:var(--s-3);align-items:center;flex-wrap:wrap;box-shadow:var(--shadow-lg);max-width:760px;margin-inline:auto}.selection-bar q{flex:1 1 200px;font-size:var(--fs-sm);color:#d9eef3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;quotes:"\ab" "\bb"}.selection-bar .btn-secondary{background:#fff}.resizer{width:10px;cursor:col-resize;background:transparent;position:relative;flex:none;touch-action:none}.resizer:after{content:"";position:absolute;top:50%;inset-inline-start:3px;width:4px;height:48px;margin-top:-24px;border-radius:4px;background:var(--c-border-strong)}.resizer:hover:after,.resizer:focus-visible:after{background:var(--c-blue-500)}.help{width:var(--help-w, 420px);flex:none;display:flex;flex-direction:column;background:#fff;border-inline-start:1px solid var(--c-border);min-height:0}.help-head{padding:var(--s-3) var(--s-4);border-bottom:1px solid var(--c-border);display:flex;flex-direction:column;gap:var(--s-2)}.help-head .mode{font-size:var(--fs-xs);color:var(--c-text-3);display:flex;gap:var(--s-2);align-items:flex-start;line-height:1.5}.current-q{background:var(--c-blue-50);border:1px solid var(--c-blue-100);border-radius:var(--r-md);padding:var(--s-2) var(--s-3);font-size:var(--fs-sm)}.current-q .lbl{font-size:var(--fs-xs);color:var(--c-blue-700);font-weight:600;display:block}.chat{flex:1;overflow:auto;padding:var(--s-4);display:flex;flex-direction:column;gap:var(--s-3);background:var(--c-bg-soft);scroll-padding-bottom:80px}.msg{display:flex;flex-direction:column;max-width:92%}.msg-student{align-self:flex-start}.msg-assistant{align-self:flex-end}.msg-row{display:flex;gap:var(--s-2);align-items:flex-start}.rafiq-avatar{width:28px;height:28px;border-radius:50%;flex:none;display:grid;place-items:center;background:var(--c-petrol-700);color:#fff;margin-top:2px}.msg-assistant .msg-meta{padding-inline-start:36px}.meta-report{min-height:26px;padding:0 var(--s-2);font-size:var(--fs-xs);margin-inline-start:auto}.msg .bubble{font-size:var(--fs-sm);white-space:pre-wrap;word-break:break-word}.msg-meta{display:flex;gap:var(--s-2);flex-wrap:wrap;align-items:center;margin-top:var(--s-1);font-size:var(--fs-xs);color:var(--c-text-3)}.bubble-refusal{border-color:var(--c-warning-100);background:var(--c-warning-100);color:var(--c-warning-700)}.bubble-escalation{border-color:var(--c-danger-100);background:var(--c-danger-100);color:var(--c-danger-700)}.bubble-check{border-color:var(--c-petrol-100);background:var(--c-petrol-50)}.verdict{font-weight:700}.sources{margin-top:var(--s-3);display:flex;flex-direction:column;gap:var(--s-2)}.source{display:flex;gap:var(--s-2);align-items:center;width:100%;text-align:start;font:inherit;font-size:var(--fs-xs);padding:var(--s-2) var(--s-3);border-radius:var(--r-md);background:var(--c-petrol-50);border:1px solid var(--c-petrol-100);color:var(--c-text);cursor:pointer;white-space:normal;transition:background var(--t-fast),border-color var(--t-fast)}.source:hover,.source:focus-visible{background:var(--c-blue-50);border-color:var(--c-blue-500);outline:none}.source .src-page{display:inline-flex;gap:4px;align-items:center;flex:none;font-weight:800;color:var(--c-petrol-800);background:#fff;border:1px solid var(--c-petrol-100);border-radius:var(--r-full);padding:2px 10px}.source .lbl{color:var(--c-text-2);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1 1 auto}.source .src-go{flex:none;color:var(--c-blue-600)}.src-warn{margin-top:var(--s-2);display:flex;gap:var(--s-1);align-items:flex-start;font-size:var(--fs-xs);color:var(--c-text-3);line-height:1.5}.src-warn .icon{flex:none;margin-top:1px}.help-actions{display:flex;flex-wrap:wrap;gap:var(--s-2);padding:var(--s-3) var(--s-4) 0;background:#fff;border-top:1px solid var(--c-border)}.help-actions .btn{min-height:36px;padding:0 var(--s-3);font-size:var(--fs-xs);border-radius:var(--r-full)}.composer{display:flex;gap:var(--s-2);padding:var(--s-3) var(--s-4) calc(var(--s-3) + env(safe-area-inset-bottom));background:#fff}.composer textarea{flex:1;min-height:44px;max-height:160px;resize:none}.mobile-tabs{display:none}.chat-loading{align-self:flex-end}@media(max-width:899px){.learn{height:calc(100dvh - var(--header-h) - 0px)}.learn-body{flex-direction:column}.resizer{display:none}.help{width:100%;border-inline-start:0;flex:1}.mobile-tabs{display:flex;padding:var(--s-2) var(--s-3);background:#fff;border-bottom:1px solid var(--c-border)}.mobile-tabs .segmented{width:100%}.mobile-tabs .segmented button{flex:1}.learn-body[data-tab=book] .help,.learn-body[data-tab=help] .reader,.learn-top .badge,.learn-top .panel-toggle{display:none}.learn-top .title{flex:1 1 0}.help-actions{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;padding-bottom:var(--s-1)}.help-actions::-webkit-scrollbar{display:none}.help-actions .btn{flex:none}}.help.collapsed{width:0;overflow:hidden;border:0}.panel-toggle{display:none}@media(min-width:900px){.panel-toggle{display:inline-flex}}.pdf-stage{display:flex;flex-direction:column;align-items:stretch;gap:var(--s-3);min-width:0}.pdf-tools{flex-wrap:wrap;gap:var(--s-2);position:sticky;top:calc(-1 * var(--s-4));z-index:4;background:var(--c-bg-muted);padding-block:var(--s-2)}.hide-sm{display:none}@media(min-width:900px){.hide-sm{display:inline}}.status-banner{display:flex;gap:var(--s-2);align-items:flex-start;padding:var(--s-2) var(--s-3);border-radius:var(--r-md);font-size:var(--fs-sm);line-height:1.5}.status-banner .icon{flex:none;margin-top:2px}.status-banner.warning{background:var(--c-warning-100);color:var(--c-warning-700)}.status-banner.info{background:var(--c-info-100);color:var(--c-info-700)}.pdf-body{display:flex;gap:var(--s-3);min-width:0;align-items:flex-start}.pdf-scroll{flex:1 1 auto;min-width:0;overflow:auto;display:flex;flex-direction:column;align-items:center;position:relative}.pdf-scroll.zoomed{align-items:flex-start;cursor:zoom-out}.zoom-back{box-shadow:var(--shadow-sm)}.pdf-page{position:relative;background:#fff;box-shadow:var(--shadow-md);cursor:zoom-in;touch-action:pan-x pan-y}.pdf-scroll.zoomed .pdf-page{cursor:zoom-out}.pdf-page.region-mode{cursor:crosshair;touch-action:none;user-select:none}.region-box{position:absolute;border:2px solid var(--c-blue-600);background:#2a7de12e;border-radius:2px;pointer-events:none}.thumbs{display:flex;gap:var(--s-2);overflow:auto;padding:var(--s-1);background:var(--c-bg-soft);border:1px solid var(--c-border);border-radius:var(--r-md);flex:none}.thumb{display:grid;gap:2px;justify-items:center;padding:var(--s-1);border:2px solid transparent;border-radius:var(--r-sm);background:transparent;cursor:pointer;flex:none;font:inherit;color:var(--c-text-2)}.thumb 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button:focus-visible{background:var(--c-petrol-50);outline:none}.anno-list .dot{width:12px;height:12px;border-radius:50%;margin-top:6px;flex:none}.ocr-row{display:flex;flex-wrap:wrap;gap:var(--s-2);align-items:center;padding:var(--s-2) var(--s-3);background:var(--c-blue-50);border-radius:var(--r-md)}.view-switch{display:flex;flex-wrap:wrap;gap:var(--s-2);align-items:center;justify-content:space-between;max-width:900px;margin:0 auto var(--s-3)}.clear-text{max-width:900px;white-space:pre-line;color:#1b1b1b}.clear-text.fs-0{font-size:1.1rem;line-height:2}.clear-text.fs-1{font-size:1.35rem;line-height:2.15}.clear-text.fs-2{font-size:1.6rem;line-height:2.2}.clear-text.fs-3{font-size:1.9rem;line-height:2.25}.clear-text.fs-4{font-size:2.25rem;line-height:2.3}.clear-text .block{margin-bottom:.9em}.clear-text .block-heading p{font-weight:700;color:var(--c-petrol-800);font-size:1.15em;margin:.6em 0 .3em}.clear-text .block p{margin:0}.clear-text 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70%),repeating-linear-gradient(45deg,rgba(255,255,255,.045) 0 2px,transparent 2px 9px);pointer-events:none}.ch-main{position:relative;z-index:1;min-width:0}.ch-eyebrow{display:inline-flex;gap:var(--s-1);align-items:center;font-size:var(--fs-xs);font-weight:700;background:#ffffff29;border-radius:var(--r-full);padding:4px 12px;margin-bottom:var(--s-3)}.continue-hero h2{color:#fff;font-size:var(--fs-2xl);font-weight:800;margin-bottom:var(--s-1);text-wrap:balance}.continue-hero p{color:#ffffffd9;font-size:var(--fs-sm);margin-bottom:var(--s-4)}.ch-btn{background:#fff;color:var(--subj-deep);font-weight:800}.ch-btn:hover{background:#f1f7f9}.ch-ghost{color:#fff;border:1px solid rgba(255,255,255,.5)}.ch-ghost:hover{background:#ffffff1f}.ch-cover{position:relative;z-index:1;flex:none;transform:rotate(-4deg)}@media(max-width:719px){.continue-hero{padding:var(--s-5)}.ch-cover{display:none}}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:var(--s-3)}.tool-card{display:grid;gap:var(--s-2);justify-items:start;align-content:start;padding:var(--s-4);border-radius:var(--r-lg);background:var(--c-bg);border:1px solid var(--c-border);border-top:3px solid var(--subj);color:var(--c-text);min-height:130px;transition:transform var(--t-base) var(--ease),box-shadow var(--t-base) var(--ease)}.tool-card:hover,.tool-card:focus-visible{text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow-md);outline:none}.tool-card:focus-visible{box-shadow:var(--focus-ring)}.tool-card strong{font-size:var(--fs-md);color:var(--c-petrol-900)}.tc-icon{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:var(--subj-soft);color:var(--subj)}.tc-sub{font-size:var(--fs-xs);color:var(--c-text-2);line-height:1.6}.bookcover{--bc-w: 104px;width:var(--bc-w);height:calc(var(--bc-w) * 1.42);border-radius:4px 9px 9px 4px;background:linear-gradient(175deg,#fff,#fbf9f4 70%,#f4f1e8);border:1px solid #e4dfd3;color:#20313a;display:grid;grid-template-rows:auto 1fr auto auto auto;row-gap:3px;padding:0 11px;position:relative;overflow:hidden;isolation:isolate;box-shadow:inset 4px 0 0 var(--subj),inset 5px 0 #00000014,0 10px 18px -10px #083a4659,0 2px 4px #083a461f;flex:none}[dir=rtl] .bookcover{border-radius:9px 4px 4px 9px;box-shadow:inset -4px 0 0 var(--subj),inset -5px 0 #00000014,0 10px 18px -10px #083a4659,0 2px 4px #083a461f}.bookcover-lg{--bc-w: 128px}.bc-motif{position:absolute;z-index:-1;inset-inline-end:-.08em;bottom:16%;font-family:var(--font-book-ar);font-weight:700;font-size:calc(var(--bc-w) * .6);line-height:.9;color:var(--subj);opacity:.09;pointer-events:none;user-select:none}.bc-motif.en{font-family:var(--font-book-en);font-size:calc(var(--bc-w) * .4);bottom:20%}.bc-star{inset-inline-end:-12%;bottom:12%;width:calc(var(--bc-w) * .56);height:calc(var(--bc-w) * .56);opacity:1}.bc-star span{position:absolute;inset:12%;border:2px solid var(--subj);opacity:.12;border-radius:3px}.bc-star span:last-child{transform:rotate(45deg)}.bc-orbit{inset-inline-end:-10%;bottom:11%;width:calc(var(--bc-w) * .56);height:calc(var(--bc-w) * .56);fill:none;stroke:var(--subj);stroke-width:2;opacity:.12}.bc-orbit circle:last-child{fill:var(--subj);stroke:none}.bc-band{display:flex;gap:4px;align-items:center;justify-content:center;justify-self:stretch;margin:0 -11px;padding:3px 8px;font-size:.58rem;font-weight:700;background:var(--subj);color:#fff}.bc-title{align-self:center;justify-self:center;text-align:center;font-family:var(--font-book-ar);font-weight:700;font-size:calc(var(--bc-w) * .135);line-height:1.4;text-wrap:balance;color:#1d2b33}.bc-rule{justify-self:center;width:46%;height:1px;background:var(--subj);opacity:.55;position:relative;margin:1px 0}.bc-rule:after{content:"";position:absolute;top:-2.5px;left:50%;width:6px;height:6px;background:var(--subj);transform:translate(-50%) rotate(45deg)}.bc-sub{text-align:center;font-size:.55rem;color:#5a6c75;line-height:1.45;max-height:2.9em;overflow:hidden;margin-bottom:3px}.bc-foot{justify-self:stretch;text-align:center;font-size:.56rem;font-weight:700;letter-spacing:.02em;background:var(--subj-soft);color:var(--subj-deep);padding:3px 8px 4px;margin:2px -11px 0;border-top:1px solid #eee9dd}.shelf{display:flex;gap:var(--s-6);align-items:flex-end;overflow-x:auto;padding:var(--s-2) var(--s-2) var(--s-5);border-bottom:10px solid var(--c-petrol-100);border-radius:0 0 4px 4px}.shelf-book{display:grid;gap:var(--s-2);justify-items:center;color:var(--c-text);flex:none;max-width:150px;text-align:center;transition:transform var(--t-base) var(--ease)}.shelf-book:hover,.shelf-book:focus-visible{text-decoration:none;transform:translateY(-4px);outline:none}.shelf-book:focus-visible .bookcover,.shelf-book:focus-visible .shelf-plus{box-shadow:var(--focus-ring)}.shelf-title{font-size:var(--fs-xs);font-weight:700;color:var(--c-text-2);line-height:1.5}.shelf-plus{width:128px;height:176px;border-radius:10px;border:2px dashed var(--c-border-strong);display:grid;place-items:center;color:var(--c-text-3);background:var(--c-bg-soft)}.mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s-2)}.mini-stat{display:grid;gap:2px;padding:var(--s-3);border-radius:var(--r-md);background:var(--subj-soft);color:var(--subj-deep)}.mini-stat b{font-size:var(--fs-xl);font-weight:800}.mini-stat span{font-size:var(--fs-xs);font-weight:600}a.session-item{color:var(--c-text)}a.session-item:hover{text-decoration:none;background:var(--c-bg-soft)}.starter-card{margin:auto var(--s-2);padding:var(--s-5);border-radius:var(--r-lg);background:var(--c-bg-soft);border:1px dashed var(--c-border-strong);display:grid;gap:var(--s-3);justify-items:center;text-align:center}.starter-card .st-icon{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--c-petrol-100);color:var(--c-petrol-700)}.starter-card p{margin:0;font-size:var(--fs-sm);color:var(--c-text-2);max-width:34ch}.starter-card .st-label{font-size:var(--fs-xs);font-weight:700;color:var(--c-petrol-800)}.st-list{display:grid;gap:var(--s-2);width:100%}.st-list button{display:flex;gap:var(--s-2);align-items:center;width:100%;text-align:start;padding:var(--s-2) var(--s-3);border:1px solid var(--c-border);border-radius:var(--r-full);background:#fff;font:inherit;font-size:var(--fs-sm);color:var(--c-text);cursor:pointer}.st-list button .icon{color:var(--c-blue-600);flex:none}.st-list button:hover,.st-list button:focus-visible{border-color:var(--c-blue-500);background:var(--c-blue-50);outline:none}.help-actions .act{min-height:36px;padding:0 var(--s-3);font-size:var(--fs-xs);font-weight:700;border-radius:var(--r-full);border:1px solid var(--c-border);background:#fff;color:var(--c-text)}.help-actions .act .icon{color:var(--act, var(--c-petrol-700))}.help-actions .act:hover:not(:disabled){border-color:var(--act, var(--c-petrol-700));background:color-mix(in srgb,var(--act, var(--c-petrol-700)) 8%,#fff)}.act-start{--act: var(--subj-arabic)}.act-rule{--act: var(--subj-islamic)}.act-review{--act: var(--subj-math)}.act-where{--act: var(--subj-science)}.act-clearer{--act: var(--subj-english)}.bubble-assistant{font-family:var(--font-amiri);font-size:1.08rem;line-height:1.95}.bubble-assistant .next .next-t{font-family:var(--font-amiri)}.bubble-assistant .verdict,.bubble-assistant .next .next-k,.bubble-assistant .sources,.bubble-assistant .src-warn{font-family:var(--font-sans)}.page-ref{display:inline-flex;align-items:baseline;font:inherit;font-family:var(--font-sans);font-size:.82em;font-weight:800;color:var(--c-blue-700);background:var(--c-blue-50);border:1px solid var(--c-blue-100);border-radius:var(--r-full);padding:0 .55em;margin-inline:2px;cursor:pointer;vertical-align:baseline;transition:background var(--t-fast),border-color var(--t-fast)}.page-ref:hover,.page-ref:focus-visible{background:var(--c-blue-100);border-color:var(--c-blue-500);outline:none}.modal-wide{max-width:720px;width:min(720px,calc(100vw - 2 * var(--s-4)))}.btn-quiz{background:var(--subj-math-soft);color:var(--subj-math-deep);border:1px solid #ecd4b8;font-weight:800}.btn-quiz:hover{background:#fbe2c4}.quiz-intro{display:grid;gap:var(--s-4);justify-items:start}.quiz-modes{display:grid;grid-template-columns:1fr 1fr;gap:var(--s-3);width:100%}@media(max-width:560px){.quiz-modes{grid-template-columns:1fr}}.quiz-mode{display:grid;gap:var(--s-1);justify-items:start;text-align:start;padding:var(--s-4);border-radius:var(--r-lg);border:2px solid var(--c-border);background:#fff;font:inherit;color:var(--c-text);cursor:pointer}.quiz-mode span:last-child{font-size:var(--fs-xs);color:var(--c-text-2);line-height:1.6}.quiz-mode .qm-icon{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:var(--subj-soft);color:var(--subj)}.quiz-mode.on,.quiz-mode:focus-visible{border-color:var(--subj);background:var(--subj-soft);outline:none}.quiz-run{display:grid;gap:var(--s-4)}.quiz-top{display:flex;gap:var(--s-3);align-items:center;flex-wrap:wrap}.quiz-dots{display:flex;gap:5px;flex:1}.quiz-dots .dot{width:9px;height:9px;border-radius:50%;background:var(--c-border-strong)}.quiz-dots .dot.done{background:var(--c-petrol-500)}.quiz-dots .dot.now{outline:2px solid var(--c-blue-500);outline-offset:1px}.quiz-prompt{font-family:var(--font-amiri);font-size:1.3rem;line-height:1.9;margin:0;color:var(--c-petrol-900)}.quiz-options{display:grid;gap:var(--s-2)}.quiz-opt{display:flex;gap:var(--s-3);align-items:flex-start;width:100%;text-align:start;padding:var(--s-3) var(--s-4);border-radius:var(--r-md);border:2px solid var(--c-border);background:#fff;font:inherit;font-family:var(--font-amiri);font-size:1.08rem;line-height:1.8;color:var(--c-text);cursor:pointer}.quiz-opt 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