@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@400;500;600;700;800;900&display=swap');
:root{--green:#086e58;--deep:#05513e;--accent:#18a578;--text:#172c35;--muted:#667981;--line:#e4eceb;--bg:#f7f9f8;--white:#fff;--radius:17px;--shadow:0 12px 38px rgba(20,62,54,.065)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--text);background:#fff;font-family:Cairo,Tahoma,"Segoe UI",Arial,sans-serif;font-size:15px;line-height:1.8}a{color:var(--green);text-decoration:none}a:hover{color:var(--deep)}button,input,select{font:inherit}button{cursor:pointer}.container{width:min(1170px,92%);margin-inline:auto}.narrow{max-width:780px}.skip{position:absolute;top:-100px;right:10px;background:#fff;z-index:99;padding:8px}.skip:focus{top:10px}.header{height:82px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.navbar{display:flex;gap:26px;align-items:center;height:100%}.brand{display:flex;align-items:center;gap:12px;color:var(--text);white-space:nowrap;font-size:21px;font-weight:900;line-height:1.1}.brand b{color:var(--green)}.brand small{display:block;font-size:10px;font-weight:600;color:var(--muted);margin-top:7px}.brand-icon{display:grid;place-items:center;width:42px;height:44px;border-radius:12px;background:var(--green);color:#fff;font-size:32px;font-weight:400}.navlinks{display:flex;gap:22px;align-items:center;white-space:nowrap}.navlinks a{font-weight:700;font-size:13px;color:#40545a}.navlinks a:hover{color:var(--green)}.header-search{margin-right:auto;display:flex;min-width:240px;max-width:310px;width:29%;background:var(--bg);border:1px solid var(--line);padding:4px;border-radius:12px}.header-search input{width:100%;border:0;outline:0;background:transparent;font-size:12px;padding:5px 10px}.header-search button{padding:7px 13px;border:0;border-radius:9px;background:var(--green);color:#fff;font-weight:800;font-size:12px}.hero{position:relative;overflow:hidden;background:linear-gradient(125deg,#f0f9f4,#f8fbf9 60%,#e8f6f0)}.hero:after{content:"";position:absolute;inset:auto -10% -160px -10%;height:250px;background:radial-gradient(ellipse,rgba(18,145,105,.08),transparent 68%);pointer-events:none}.hero-inner{display:grid;grid-template-columns:1.16fr .84fr;align-items:center;min-height:486px;gap:20px}.hero-text{position:relative;z-index:1;padding:57px 0 65px}.hero-pill{display:inline-flex;align-items:center;gap:9px;background:#e3f4ea;color:#096346;border:1px solid #c8e8d4;border-radius:50px;padding:7px 15px;font-size:12px;font-weight:800}.dot{display:block;width:8px;height:8px;border-radius:50%;background:#18a576}.hero h1{font-size:clamp(35px,4vw,57px);line-height:1.36;margin:22px 0 15px;letter-spacing:-1px;color:#103d34;font-weight:900}.hero h1 em{font-style:normal;color:var(--green)}.hero-text>p{color:#536f6a;font-size:15px;max-width:570px;line-height:2.2;margin:0 0 24px}.hero-search{display:flex;width:min(590px,100%);background:#fff;border:1px solid #d3e9df;box-shadow:0 10px 32px rgba(7,78,56,.07);padding:7px;border-radius:14px}.hero-search input{flex:1;min-width:90px;border:0;outline:0;padding:10px 16px;font-size:13px}.hero-search button,.btn-primary{background:var(--green)!important;color:#fff!important;border:1px solid var(--green)!important}.hero-search button{border:0;border-radius:10px;padding:10px 21px;font-size:13px;font-weight:800}.hero-search button:hover,.btn-primary:hover{background:var(--deep)!important}.hero-features{display:flex;gap:23px;flex-wrap:wrap;margin-top:18px;font-size:12px;color:#5f8175;font-weight:700}.hero-decor{position:relative;min-height:430px}.shape-halo{width:360px;height:360px;background:linear-gradient(135deg,#cfebdd,#eaf8ef);position:absolute;left:3%;top:30px;border-radius:50%;border:1px solid rgba(14,111,78,.12)}.book-stack{position:absolute;top:100px;left:13%;height:270px;width:320px}.stack-card{position:absolute;top:16px;left:20px;display:flex;flex-direction:column;align-items:center;justify-content:center;width:170px;height:245px;border-radius:13px 6px 6px 13px;box-shadow:8px 14px 35px rgba(13,74,58,.2),inset -5px 0 rgba(255,255,255,.2);color:#fff;border-right:6px solid rgba(0,0,0,.12);transform-origin:bottom center}.stack-card span{font-size:43px;line-height:1.2}.stack-card b{font-size:19px;margin-top:10px}.stack-card small{font-size:11px;opacity:.87}.stack-card.one{background:linear-gradient(145deg,#136e5c,#0f3f42);transform:rotate(-19deg);z-index:3;left:63px}.stack-card.two{background:linear-gradient(145deg,#3683b2,#163d72);transform:rotate(3deg);z-index:2;left:105px;top:4px}.stack-card.three{background:linear-gradient(145deg,#eba63d,#a95e2c);transform:rotate(20deg);z-index:1;left:140px;top:8px}.hero-float{position:absolute;z-index:4;top:305px;left:10px;display:flex;align-items:center;gap:9px;padding:12px 16px;background:#fff;box-shadow:var(--shadow);border-radius:12px;color:var(--green);font-size:17px}.hero-float b{font-size:12px}.hero-float small{font-size:10px;color:#86928f}.section{padding:64px 0}.light-section{background:var(--bg)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:25px}.kicker{display:block;font-size:12px;color:var(--green);font-weight:900;letter-spacing:.15px}.section-head h2{font-size:28px;line-height:1.4;margin:6px 0}.section-head p{color:var(--muted);font-size:13px;margin:0}.textlink{font-weight:800;font-size:13px;white-space:nowrap}.grade-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.gradecard{display:flex;align-items:center;gap:13px;background:#fff;border:1px solid var(--line);padding:18px;border-radius:var(--radius);color:var(--text);box-shadow:0 5px 15px rgba(32,65,52,.025);transition:transform .16s,box-shadow .16s,border-color .16s}.gradecard:hover,.subject-card:hover,.bookcard:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#b0d9c8;color:var(--text)}.gradeicon{min-width:48px;height:48px;border-radius:13px;background:#e7f5ee;display:grid;place-items:center;font-size:19px;font-weight:900;color:var(--green)}.gradecard strong,.subject-card strong{display:block;font-size:14px}.gradecard small,.subject-card small{display:block;color:var(--muted);font-size:11px;margin-top:1px}.arrow{margin-right:auto;color:#9aa9a7;font-size:20px}.book-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:17px}.bookcard{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:transform .16s,box-shadow .16s,border-color .16s}.bookcard-link{display:block;height:100%;color:var(--text)}.book-cover{height:205px;display:flex;align-items:center;justify-content:center;background:linear-gradient(140deg,#edf6f1,#e5f1ed);padding:15px}.book-cover img{width:100%;height:100%;object-fit:contain}.book-art{height:163px;width:118px;background:linear-gradient(140deg,#137763,#065b4a);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:8px 3px 3px 8px;border-right:5px solid #064935;box-shadow:8px 9px 18px rgba(6,80,55,.17)}.book-art span{font-size:43px;line-height:1}.book-art small{margin-top:12px;font-weight:800}.book-art b{font-size:19px;opacity:.8}.bookbody{padding:15px 16px 17px}.eyebrow{font-size:10px;color:var(--green);font-weight:800}.bookbody h3{font-size:14px;line-height:1.75;margin:8px 0 11px;min-height:50px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.booktags{display:flex;flex-wrap:wrap;gap:5px;min-height:26px}.booktags span{border-radius:7px;background:#f0f5f2;color:#55736b;padding:3px 8px;font-size:10px}.cardaction{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:10px;margin-top:13px;font-size:12px;font-weight:900;color:var(--green)}.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.trust-grid>div{text-align:center;padding:12px 26px}.trust-icon{font-size:30px;color:var(--green);display:block}.trust-grid h3{font-size:17px;margin:5px 0}.trust-grid p{font-size:12px;color:var(--muted);margin:0}.footer{background:#112b29;color:#d3e5e1;margin-top:18px;padding-top:49px}.footer a{display:block;color:#c9e3da;font-size:13px;margin-top:9px}.footer a:hover{color:#fff}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:70px}.footer strong{color:#fff}.footer p{color:#bdd0ca;font-size:12px;max-width:370px}.footbrand{font-weight:900;font-size:21px;color:#fff}.copyright{display:flex;gap:20px;justify-content:space-between;padding:22px 0;margin-top:42px;border-top:1px solid rgba(255,255,255,.12);font-size:11px;color:#a1bcb3}.copyright a{display:inline;margin:0;font-size:11px}.breadcrumbs{padding:18px 0;display:flex;flex-wrap:wrap;gap:10px;font-size:11px;color:#8d9f99}.breadcrumbs a{color:#65847a}.pagehero{padding:31px 0 38px;background:linear-gradient(110deg,#eef8f2,#f7faf9);border-block:1px solid #e6f0e9}.pagehero h1{margin:7px 0;font-size:32px;color:#12473a}.pagehero p{color:#607b71;font-size:13px;margin:0;max-width:760px}.subjects-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.subject-card{border:1px solid var(--line);background:#fff;border-radius:14px;display:flex;align-items:center;gap:15px;padding:18px;transition:.15s;color:var(--text)}.subject-icon{min-width:50px;height:50px;display:grid;place-items:center;border-radius:12px;background:#e9f5ef;color:var(--green);font-size:28px}.count-pill{padding:5px 13px;background:#e9f6ee;border-radius:30px;font-size:12px;font-weight:800;color:var(--green)}.empty{padding:54px 20px;border-radius:18px;text-align:center;background:var(--bg);border:1px dashed #c6d8d1}.empty h2,.empty h3{margin-top:0}.empty p{font-size:13px;color:var(--muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:10px 20px;border-radius:11px;font-size:13px;font-weight:800;border:1px solid var(--green);color:var(--green);background:#fff;transition:.15s}.btn:hover{transform:translateY(-1px)}.btn-outline{border-color:#bcd6cd}.book-page{padding-top:28px}.detail-layout{display:grid;grid-template-columns:290px 1fr;align-items:start;gap:47px}.detail-cover{height:377px;background:linear-gradient(150deg,#edf6f0,#f7faf7);border:1px solid var(--line);border-radius:17px;display:flex;align-items:center;justify-content:center;padding:23px}.detail-cover img{width:100%;height:100%;object-fit:contain}.detail-placeholder{background:linear-gradient(145deg,#0d8366,#124d46);color:#fff;width:206px;height:292px;border-radius:13px 4px 4px 13px;border-right:10px solid #06483d;box-shadow:12px 12px 25px rgba(8,55,44,.19);display:flex;align-items:center;justify-content:center;flex-direction:column}.detail-placeholder span{font-size:80px;line-height:1}.detail-placeholder small{margin-top:15px}.detail-placeholder b{font-size:20px}.detail-placeholder em{font-style:normal;font-size:13px;margin-top:10px}.detail-info h1{font-size:30px;line-height:1.65;margin:8px 0 10px}.detail-subtitle{color:var(--muted);font-size:13px}.info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:23px 0}.info-cell{border:1px solid var(--line);background:#fafcfa;border-radius:12px;padding:12px 15px}.info-cell small{display:block;font-size:11px;color:#81938c}.info-cell strong{display:block;font-size:13px;margin-top:2px}.detail-actions{display:flex;flex-wrap:wrap;gap:9px}.source-note{display:flex;gap:10px;margin-top:25px;border-radius:11px;background:#f1f8f5;padding:10px 14px;color:#41655c}.source-note p{font-size:11px;margin:0}.preview-section,.related-section{margin-top:52px}.pdf-preview{width:100%;height:min(78vh,820px);min-height:430px;border:1px solid var(--line);border-radius:15px;background:#f6f8f6}.filters{padding:17px;border-radius:15px;background:var(--bg);border:1px solid var(--line);display:grid;grid-template-columns:2fr 1fr 1fr auto;align-items:end;gap:12px}.filters label{display:flex;flex-direction:column;gap:5px;color:#3d5650;font-size:12px;font-weight:800}.filters input,.filters select{padding:10px 12px;border:1px solid #d5e1db;border-radius:10px;background:#fff;color:var(--text);width:100%;outline-color:var(--green);font-size:12px}.filter-row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:23px 0 18px;font-size:13px;color:#607a71}.pagination{display:flex;align-items:center;justify-content:center;gap:7px;margin-top:30px}.pagination a{display:grid;place-items:center;min-width:37px;height:37px;border:1px solid var(--line);border-radius:9px}.pagination [aria-current]{background:var(--green);color:#fff}.prose{border:1px solid var(--line);background:#fff;border-radius:15px;padding:28px;font-size:15px;line-height:2.2}.prose p{margin:0 0 18px}@media(max-width:1040px){.navbar{gap:18px}.navlinks{gap:13px}.header-search{width:26%;min-width:170px}.grade-grid{grid-template-columns:repeat(3,1fr)}.book-grid{grid-template-columns:repeat(3,1fr)}.hero-decor{transform:scale(.85)}.hero h1{font-size:40px}}@media(max-width:750px){.header{height:auto;position:relative}.navbar{padding-block:12px;gap:10px;flex-wrap:wrap}.brand{font-size:18px}.brand-icon{width:38px;height:38px}.navlinks{order:3;width:100%;justify-content:space-between;gap:10px}.navlinks a{font-size:11px}.header-search{min-width:0;width:auto;flex:1;max-width:none}.header-search input{min-width:0}.hero-inner{display:block;min-height:auto}.hero-text{padding:48px 0}.hero h1{font-size:35px}.hero-text>p{font-size:13px}.hero-decor{display:none}.section{padding:42px 0}.section-head h2{font-size:23px}.grade-grid,.subjects-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.gradecard{padding:12px;gap:9px}.gradeicon{min-width:39px;height:41px;font-size:16px}.gradecard strong,.subject-card strong{font-size:12px}.book-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.book-cover{height:172px}.bookbody{padding:11px}.bookbody h3{font-size:12px;min-height:44px}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-grid>div:first-child{grid-column:1/-1}.copyright{display:block}.detail-layout{grid-template-columns:1fr;gap:22px}.detail-cover{height:300px}.detail-info h1{font-size:24px}.filters{grid-template-columns:repeat(2,1fr)}.filters label:first-child{grid-column:1/-1}.filters .btn{width:100%}.trust-grid{grid-template-columns:1fr;gap:4px}.trust-grid>div{padding:10px}.pagehero h1{font-size:26px}}@media(max-width:420px){.header-search button{padding:6px 8px}.header-search input{font-size:10px;padding:5px}.navlinks a{font-size:10px}.hero-search{display:block}.hero-search input{width:100%;height:45px}.hero-search button{width:100%}.hero-features{gap:8px;font-size:10px}.grade-grid{gap:7px}.gradecard{padding:9px;gap:7px}.gradeicon{min-width:33px;height:36px}.gradecard strong{font-size:10px}.gradecard small{font-size:9px}.gradecard .arrow{font-size:12px}.book-cover{height:148px}.book-art{transform:scale(.81)}.bookbody h3{font-size:11px}.info-grid{grid-template-columns:1fr}.section-head{align-items:start}.section-head .textlink{font-size:10px}.subject-card{padding:10px;gap:7px}.subject-icon{min-width:35px;height:35px;font-size:20px}}