:root{--paper: #fbf7f0;--paper-2: #f5efe3;--card: #ffffff;--ink: #10201c;--ink-soft: #35443f;--muted: #5d6b66;--teal: #0e6b57;--teal-deep: #0a4f41;--teal-tint: #e6f1ec;--gold: #b98732;--gold-ink: #8a6320;--gold-soft: #e9cf9c;--gold-tint: #f8efdc;--rose: #a4506a;--line: rgba(16, 32, 28, .11);--line-strong: rgba(16, 32, 28, .2);--shadow-sm: 0 1px 2px rgba(16, 32, 28, .04), 0 8px 24px -16px rgba(16, 32, 28, .24);--shadow-md: 0 2px 4px rgba(16, 32, 28, .04), 0 24px 48px -28px rgba(16, 32, 28, .32);--shadow-lg: 0 40px 80px -40px rgba(10, 79, 65, .45);--radius-sm: 12px;--radius: 18px;--radius-lg: 28px;--radius-xl: 40px;--font-head: "Noto Naskh Arabic", "Times New Roman", serif;--font-body: "Noto Sans Arabic", system-ui, -apple-system, sans-serif;--wrap: 1180px;--ease: cubic-bezier(.22, .61, .36, 1)}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;background-color:var(--paper);background-image:radial-gradient(circle at 12% 8%,rgba(14,107,87,.07),transparent 42%),radial-gradient(circle at 88% 0%,rgba(185,135,50,.08),transparent 38%);background-repeat:no-repeat;color:var(--ink);font-family:var(--font-body);font-size:17px;line-height:1.8;font-weight:400;-webkit-font-smoothing:antialiased;overflow-x:hidden}h1,h2,h3,h4{font-family:var(--font-head);font-weight:700;line-height:1.35;margin:0;letter-spacing:0}p{margin:0}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer}img,svg{display:block;max-width:100%}ul{margin:0;padding:0;list-style:none}::selection{background:var(--teal);color:#fff}:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:6px}.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}.section{padding:clamp(64px,9vw,118px) 0;position:relative}.section--tint{background:linear-gradient(180deg,#f5efe3bf,#fbf7f000)}.section-head{max-width:640px;margin-bottom:clamp(32px,4vw,56px)}.kicker{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:.16em;color:var(--teal);text-transform:uppercase;margin-bottom:14px}.kicker:before{content:"";width:26px;height:1px;background:var(--gold)}.section-title{font-size:clamp(1.85rem,3.6vw,2.9rem);color:var(--ink);margin-bottom:14px}.section-sub{color:var(--muted);font-size:clamp(.98rem,1.4vw,1.08rem);line-height:1.95}.eyebrow-line{display:block;width:46px;height:3px;background:var(--gold);border-radius:3px;margin-top:18px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:14px 26px;border-radius:999px;border:1px solid transparent;font-size:15px;font-weight:600;transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease);cursor:pointer;white-space:nowrap}.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0)}.btn-primary{background:var(--teal);color:#fff;box-shadow:0 12px 24px -14px #0e6b57d9}.btn-primary:hover{background:var(--teal-deep);box-shadow:0 18px 30px -14px #0e6b57cc}.btn-ghost{background:#ffffffa6;border-color:var(--line-strong);color:var(--ink)}.btn-ghost:hover{border-color:var(--teal);color:var(--teal);background:#fff}.nav{position:sticky;top:0;z-index:60;backdrop-filter:blur(16px) saturate(150%);-webkit-backdrop-filter:blur(16px) saturate(150%);background:#fbf7f0d1;border-bottom:1px solid transparent;transition:border-color .3s var(--ease),box-shadow .3s var(--ease)}.nav.is-scrolled{border-bottom-color:var(--line);box-shadow:0 10px 30px -26px #10201c80}.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:44px;height:44px;border-radius:14px;background:linear-gradient(150deg,var(--teal),var(--teal-deep));color:#fff;display:grid;place-items:center;font-family:var(--font-head);font-size:20px;font-weight:700;box-shadow:inset 0 1px #ffffff47,0 10px 18px -12px #0a4f41e6;position:relative;overflow:hidden}.brand-mark:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at 70% 15%,rgba(233,207,156,.55),transparent 58%)}.brand-text{display:flex;flex-direction:column;line-height:1.25}.brand-name{font-family:var(--font-head);font-size:19px;font-weight:700}.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.06em}.nav-links{display:flex;align-items:center;gap:4px;background:#fff9;border:1px solid var(--line);padding:5px;border-radius:999px}.nav-link{padding:8px 15px;border-radius:999px;font-size:14.5px;color:var(--ink-soft);transition:background .22s var(--ease),color .22s var(--ease)}.nav-link:hover{background:var(--teal-tint);color:var(--teal-deep)}.nav-link.active{background:var(--ink);color:var(--paper)}.nav-side{display:flex;align-items:center;gap:10px}.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);background:#fff;color:var(--ink);place-items:center}.mobile-menu{display:none;padding:10px 24px 22px;border-top:1px solid var(--line);background:#fbf7f0fa}.mobile-menu a{display:block;padding:12px 4px;font-size:16px;border-bottom:1px solid var(--line);color:var(--ink-soft)}.mobile-menu a:last-child{border-bottom:0}.hero{position:relative;padding:clamp(40px,6vw,76px) 0 clamp(56px,8vw,104px);overflow:hidden}.hero:before{content:"";position:absolute;inset-inline-start:-180px;top:-120px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(14,107,87,.1),transparent 68%);pointer-events:none}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,64px);align-items:center;position:relative}.hero-badge{display:inline-flex;align-items:center;gap:9px;padding:7px 14px 7px 10px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:12.5px;font-weight:600;color:var(--ink-soft);box-shadow:var(--shadow-sm);margin-bottom:22px}.hero-badge span.dot{width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px #0e6b5726}.hero-title{font-size:clamp(2.5rem,6.2vw,4.35rem);line-height:1.16;margin-bottom:20px}.hero-title em{font-style:normal;color:var(--teal);position:relative;isolation:isolate;white-space:nowrap}.hero-title em:after{content:"";position:absolute;inset-inline:0;bottom:6px;height:10px;background:var(--gold-soft);opacity:.45;border-radius:4px;z-index:-1}.hero-lead{font-size:clamp(1rem,1.6vw,1.15rem);color:var(--ink-soft);max-width:48ch;line-height:2}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.hero-stats{display:flex;flex-wrap:wrap;gap:clamp(18px,3vw,38px);margin-top:40px;padding-top:26px;border-top:1px solid var(--line)}.stat-num{font-family:var(--font-head);font-size:clamp(1.5rem,2.6vw,2rem);font-weight:700;color:var(--teal-deep);line-height:1.2}.stat-label{font-size:12.5px;color:var(--muted);letter-spacing:.02em}.hero-art{position:relative;display:grid;place-items:center;min-height:440px;perspective:1200px}.art-grid{position:absolute;top:0;right:0;bottom:0;left:0;background-image:linear-gradient(to left,rgba(16,32,28,.07) 1px,transparent 1px),linear-gradient(to bottom,rgba(16,32,28,.07) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(circle at 50% 50%,#000 30%,transparent 74%);-webkit-mask-image:radial-gradient(circle at 50% 50%,#000 30%,transparent 74%);opacity:.9}.art-ring{position:absolute;width:380px;height:380px;border:1px dashed rgba(185,135,50,.45);border-radius:50%;animation:spin 60s linear infinite}.book{position:relative;width:clamp(230px,26vw,296px);aspect-ratio:3 / 4.05;transform:rotate(-4deg);transform-style:preserve-3d;transition:transform .6s var(--ease);animation:float 7s ease-in-out infinite}.hero-art:hover .book{transform:rotate(0) translateY(-6px) scale(1.02)}.book-cover{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:8px 22px 22px 8px;background:radial-gradient(circle at 78% 12%,rgba(233,207,156,.28),transparent 52%),linear-gradient(160deg,#11604f,#0a3f35 60%,#072b24);color:#f8f3e8;padding:26px 24px 22px;display:flex;flex-direction:column;box-shadow:var(--shadow-lg),inset 0 0 0 1px #ffffff1a;overflow:hidden;direction:rtl}.book-cover:after{content:"";position:absolute;top:0;bottom:0;inset-inline-start:0;width:16px;background:linear-gradient(to right,#00000052,#ffffff0d)}.cover-kicker{font-size:10.5px;letter-spacing:.18em;color:var(--gold-soft);font-weight:600;margin-bottom:10px}.cover-title{font-family:var(--font-head);font-size:clamp(2rem,4vw,2.6rem);line-height:1.15;font-weight:700}.cover-sub{font-size:12.5px;color:#f8f3e8c7;margin-top:6px;font-weight:300}.cover-figure{flex:1;display:grid;place-items:center;margin:6px 0;opacity:.92}.cover-rule{height:1px;background:linear-gradient(to left,rgba(233,207,156,.7),transparent);margin-bottom:12px}.cover-author{font-family:var(--font-head);font-size:15px;font-weight:600;letter-spacing:.02em}.cover-role{font-size:10px;color:#f8f3e899;letter-spacing:.1em}.book-shadow{position:absolute;bottom:-34px;inset-inline:6%;height:46px;background:radial-gradient(ellipse at center,rgba(10,79,65,.38),transparent 70%);filter:blur(12px);border-radius:50%}.chip{position:absolute;display:flex;align-items:center;gap:10px;background:#ffffffe6;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.9);border-radius:16px;padding:10px 14px;box-shadow:var(--shadow-md);font-size:12.5px;font-weight:600;color:var(--ink);animation:float 6s ease-in-out infinite}.chip-ico{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;background:var(--teal-tint);color:var(--teal)}.chip small{display:block;font-size:10.5px;font-weight:400;color:var(--muted)}.chip-a{top:3%;inset-inline-end:-9%;animation-delay:.6s}.chip-b{bottom:4%;inset-inline-end:1%;animation-delay:1.4s}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-12px)}}@keyframes spin{to{transform:rotate(360deg)}}.about-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(26px,4vw,56px);align-items:start}.about-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow-sm);position:sticky;top:100px}.portrait{width:82px;height:82px;border-radius:24px;background:linear-gradient(150deg,var(--teal-tint),#fff);border:1px solid var(--line);display:grid;place-items:center;font-family:var(--font-head);font-size:30px;font-weight:700;color:var(--teal-deep);margin-bottom:18px}.about-name{font-size:1.45rem;margin-bottom:4px}.about-role{font-size:13px;color:var(--gold-ink);font-weight:600;letter-spacing:.04em;margin-bottom:16px}.about-note{font-size:14.5px;color:var(--muted);line-height:1.95;padding-top:16px;border-top:1px solid var(--line)}.about-body p{font-size:clamp(1rem,1.4vw,1.08rem);color:var(--ink-soft);line-height:2.1;margin-bottom:18px}.about-body p:first-child:first-letter{font-family:var(--font-head);font-size:2.6rem;font-weight:700;color:var(--teal);float:right;line-height:1;margin-inline-end:10px;margin-top:6px}.values{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:26px}.value{display:flex;gap:12px;padding:16px;background:#ffffffb3;border:1px solid var(--line);border-radius:var(--radius);transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease)}.value:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:#0e6b5759}.value-ico{color:var(--teal);flex-shrink:0;margin-top:3px}.value h4{font-size:15px;margin-bottom:2px;font-family:var(--font-body);font-weight:600}.value p{font-size:12.5px;color:var(--muted);line-height:1.7}.book-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,48px);align-items:start}.toc-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-md);position:relative;overflow:hidden}.toc-card:before{content:"";position:absolute;top:0;inset-inline:0;height:4px;background:linear-gradient(to left,var(--teal),var(--gold),var(--teal))}.toc-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--line)}.toc-head h3{font-size:1.3rem}.toc-head span{font-size:12px;color:var(--muted)}.toc-row{display:flex;align-items:center;gap:14px;padding:12px 10px;border-radius:12px;transition:background .22s var(--ease),transform .22s var(--ease);cursor:default}.toc-row:hover{background:var(--teal-tint);transform:translate(-4px)}.toc-num{font-family:var(--font-head);font-size:13px;font-weight:700;color:var(--gold-ink);min-width:26px;letter-spacing:.04em}.toc-title{flex:1;font-size:14.5px;font-weight:500;color:var(--ink-soft)}.toc-meta{font-size:11.5px;color:var(--muted);white-space:nowrap}.feature-stack{display:grid;gap:14px}.feature{display:flex;gap:16px;padding:20px;background:#ffffffbf;border:1px solid var(--line);border-radius:var(--radius);transition:transform .28s var(--ease),box-shadow .28s var(--ease),background .28s var(--ease)}.feature:hover{transform:translateY(-3px);background:#fff;box-shadow:var(--shadow-sm)}.feature-ico{width:44px;height:44px;flex-shrink:0;border-radius:14px;display:grid;place-items:center;background:var(--gold-tint);color:var(--gold)}.feature h4{font-size:16px;font-family:var(--font-body);font-weight:600;margin-bottom:3px}.feature p{font-size:13.5px;color:var(--muted);line-height:1.8}.book-meta-strip{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;padding-top:20px;border-top:1px dashed var(--line-strong)}.meta-pill{font-size:12px;padding:6px 13px;border-radius:999px;background:var(--paper-2);color:var(--ink-soft);border:1px solid var(--line)}.curriculum{position:relative;background:radial-gradient(circle at 82% 8%,rgba(185,135,50,.2),transparent 42%),radial-gradient(circle at 8% 92%,rgba(14,107,87,.55),transparent 46%),#092b24;color:#f2ede1;overflow:hidden}.curriculum:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:linear-gradient(to left,rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(to bottom,rgba(255,255,255,.045) 1px,transparent 1px);background-size:72px 72px;pointer-events:none;mask-image:radial-gradient(circle at 50% 0%,#000,transparent 80%);-webkit-mask-image:radial-gradient(circle at 50% 0%,#000,transparent 80%)}.curriculum .wrap{position:relative;z-index:1}.curriculum .section-title{color:#fbf7ef}.curriculum .section-sub{color:#f2ede1b3}.curriculum .kicker{color:var(--gold-soft)}.curriculum .kicker:before{background:var(--gold-soft)}.unit-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}.unit-tab{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:999px;background:#ffffff0f;border:1px solid rgba(255,255,255,.12);color:#f2ede1d1;font-size:13.5px;font-weight:500;transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease)}.unit-tab:hover{background:#ffffff1f;transform:translateY(-2px)}.unit-tab[aria-selected=true]{background:var(--gold-soft);color:#0a2f28;border-color:var(--gold-soft);font-weight:700}.unit-tab .n{font-family:var(--font-head);font-size:12px;opacity:.7}.unit-panel{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(20px,3vw,36px);background:#ffffff0e;border:1px solid rgba(255,255,255,.13);border-radius:var(--radius-lg);padding:clamp(22px,3vw,36px);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);animation:fadeUp .5s var(--ease) both}.unit-panel h3{font-size:clamp(1.3rem,2.4vw,1.75rem);color:#fff;margin-bottom:8px}.unit-tagline{font-size:13.5px;color:var(--gold-soft);margin-bottom:20px;letter-spacing:.02em}.unit-goals{display:grid;gap:11px}.unit-goal{display:flex;gap:10px;font-size:14.5px;color:#f2ede1e6;line-height:1.75}.unit-goal svg{flex-shrink:0;margin-top:5px;color:var(--gold-soft)}.unit-aside{background:#092b2499;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column;gap:18px}.unit-aside h4{font-size:11.5px;letter-spacing:.16em;color:#f2ede18c;font-family:var(--font-body);font-weight:600;margin-bottom:10px}.concept-chips{display:flex;flex-wrap:wrap;gap:7px}.concept-chip{font-size:11.5px;padding:5px 11px;border-radius:8px;background:#e9cf9c24;color:var(--gold-soft);border:1px solid rgba(233,207,156,.22)}.unit-stat-row{display:flex;gap:20px;padding-top:16px;border-top:1px solid rgba(255,255,255,.1)}.unit-stat b{display:block;font-family:var(--font-head);font-size:20px;color:#fff}.unit-stat span{font-size:11px;color:#f2ede18c}.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;position:relative}.step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px 22px;position:relative;transition:transform .3s var(--ease),box-shadow .3s var(--ease)}.step:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}.step-num{font-family:var(--font-head);font-size:13px;font-weight:700;color:var(--gold-ink);letter-spacing:.14em;margin-bottom:14px;display:block}.step-ico{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:var(--teal-tint);color:var(--teal-deep);margin-bottom:14px}.step h4{font-family:var(--font-head);font-size:19px;margin-bottom:6px}.step p{font-size:13.5px;color:var(--muted);line-height:1.85}.sample-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(22px,4vw,44px);align-items:start}.sample-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:clamp(22px,3vw,34px);box-shadow:var(--shadow-md);position:relative}.sample-label{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;font-weight:600;letter-spacing:.1em;color:var(--teal);background:var(--teal-tint);padding:5px 12px;border-radius:999px;margin-bottom:18px}.problem{font-size:clamp(1rem,1.5vw,1.1rem);line-height:2;color:var(--ink-soft);padding:18px 20px;border-inline-start:3px solid var(--gold);background:var(--gold-tint);border-radius:0 14px 14px 0;margin-bottom:18px}.problem b{color:var(--ink)}.equation{direction:ltr;text-align:center;font-family:Noto Naskh Arabic,serif;font-size:clamp(1.1rem,2vw,1.35rem);color:var(--teal-deep);background:var(--paper);border:1px dashed var(--line-strong);border-radius:14px;padding:16px;margin-bottom:20px;letter-spacing:.04em}.solution{overflow:hidden;max-height:0;opacity:0;transition:max-height .55s var(--ease),opacity .4s var(--ease),margin .4s var(--ease)}.solution.open{max-height:620px;opacity:1;margin-top:18px}.solution ol{list-style:none;counter-reset:s;display:grid;gap:12px}.solution li{counter-increment:s;position:relative;padding-inline-start:38px;font-size:14px;line-height:1.95;color:var(--ink-soft)}.solution li:before{content:counter(s);position:absolute;inset-inline-start:0;top:2px;width:24px;height:24px;border-radius:50%;background:var(--teal-tint);color:var(--teal-deep);font-family:var(--font-head);font-size:12px;font-weight:700;display:grid;place-items:center}.solution-result{margin-top:16px;padding:12px 16px;border-radius:12px;background:var(--teal-tint);border:1px solid rgba(14,107,87,.25);font-size:14px;font-weight:600;color:var(--teal-deep)}.faq{display:grid;gap:10px}.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:border-color .25s var(--ease),box-shadow .25s var(--ease)}.faq-item.open{border-color:#0e6b5766;box-shadow:var(--shadow-sm)}.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;background:none;border:0;text-align:start;font-family:var(--font-body);font-size:15.5px;font-weight:600;color:var(--ink)}.faq-icon{flex-shrink:0;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:var(--paper-2);color:var(--teal);transition:transform .3s var(--ease),background .3s var(--ease)}.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--teal);color:#fff}.faq-a{max-height:0;overflow:hidden;transition:max-height .45s var(--ease)}.faq-a p{padding:0 22px 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