@import "https://fonts.googleapis.com/css2?family=Almarai:wght@400;700;800&family=Tajawal:wght@400;500;700;800;900&display=swap";@import "https://fonts.googleapis.com/css2?family=Almarai:wght@400;700;800&family=Tajawal:wght@400;500;700;800;900&display=swap";:root{--bg:#eef3f8;--bg-2:#dfeaf5;--surface:#fff;--surface-2:#f5f9fd;--ink:#102a43;--ink-soft:#3f5f7a;--muted:#6d849a;--line:#102a431f;--line-2:#102a4333;--brand:#2878c8;--brand-2:#15539a;--brand-soft:#2878c81c;--accent:#f5bd45;--accent-2:#dfa02b;--accent-ink:#27200e;--ok:#238b74;--no:#d9534f;--warn:#e8a33d;--shadow-s:0 4px 14px #0f2a240f;--shadow-m:0 14px 34px #0f2a241a;--shadow-l:0 26px 60px #0f2a2424;--r-s:12px;--r-m:18px;--r-l:26px;--r-pill:999px;--head:"Almarai", "Tajawal", Tahoma, Arial, sans-serif;--body:"Tajawal", "Almarai", Tahoma, Arial, sans-serif;--ease:cubic-bezier(.22, .61, .36, 1);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}:root[data-theme=dark]{--bg:#071a17;--bg-2:#0a231e;--surface:#0e2a24;--surface-2:#123329;--ink:#eaf6f1;--ink-soft:#cbded6;--muted:#92aca3;--line:#b4dcd024;--line-2:#b4dcd042;--brand:#2ed3a7;--brand-2:#23b892;--brand-soft:#2ed3a724;--accent:#f5bd45;--accent-2:#dfa02b;--accent-ink:#0d2411;--ok:#4fd6a1;--no:#ff8a80;--shadow-s:0 4px 14px #0000004d;--shadow-m:0 14px 34px #00000061;--shadow-l:0 26px 60px #00000075;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);min-width:320px;color:var(--ink);font-family:var(--body);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;transition:background .3s var(--ease), color .3s var(--ease);margin:0;font-size:15px;line-height:1.9}h1,h2,h3,h4{font-family:var(--head);letter-spacing:-.3px;margin:0;font-weight:800;line-height:1.35}p{margin:0}a{color:inherit;text-decoration:none}button,input,select,textarea{font-family:inherit;font-size:inherit}button{cursor:pointer;color:inherit;background:0 0;border:0}img{max-width:100%}:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}.container{width:min(100%,1240px);margin-inline:auto;padding-inline:clamp(16px,4vw,40px)}.ic{stroke-width:1.9px;vertical-align:-.18em;flex:none;width:1.15em;height:1.15em}.btn{border-radius:var(--r-pill);min-height:48px;font-family:var(--head);white-space:nowrap;transition:transform .22s var(--ease), background .22s, color .22s, border-color .22s, box-shadow .22s;border:2px solid #0000;justify-content:center;align-items:center;gap:9px;padding:0 24px;font-size:14.5px;font-weight:700;display:inline-flex}.btn:hover{transform:translateY(-2px)}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}.btn-brand{background:var(--brand);color:#fff;box-shadow:var(--shadow-s)}.btn-brand:hover{background:var(--brand-2);box-shadow:var(--shadow-m)}.btn-accent{background:var(--accent);color:var(--accent-ink);box-shadow:var(--shadow-s)}.btn-accent:hover{background:var(--accent-2);box-shadow:var(--shadow-m)}.btn-outline{border-color:var(--brand);color:var(--brand);background:0 0}.btn-outline:hover{background:var(--brand);color:#fff}.btn-soft{background:var(--surface);color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-s)}.btn-soft:hover{border-color:var(--brand);color:var(--brand)}.btn-sm{min-height:40px;padding:0 18px;font-size:13px}.btn-lg{min-height:56px;padding:0 32px;font-size:16px}.btn-block{width:100%}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow-s)}.pill{border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);font-family:var(--head);align-items:center;gap:7px;padding:6px 14px;font-size:12.5px;font-weight:700;display:inline-flex}.field{border-bottom:1px solid var(--line-2);align-items:center;gap:10px;padding:6px 2px;transition:border-color .2s;display:flex;position:relative}.field:focus-within{border-bottom-color:var(--brand)}.field>.ic{color:var(--brand);font-size:17px}.field input,.field select{min-width:0;min-height:44px;color:var(--ink);background:0 0;border:0;outline:none;flex:1;font-size:15px}.field select{appearance:none;cursor:pointer}.field select~.ic{color:var(--muted);transform:rotate(-90deg)}.field option{background:var(--surface);color:var(--ink)}.field input::placeholder{color:var(--muted)}.field.is-bad{border-bottom-color:var(--no)}.field-error{color:var(--no);align-items:center;gap:6px;margin-top:6px;font-size:12.5px;display:flex}.reveal{opacity:0;transition:opacity .7s var(--ease) var(--d,0s), transform .7s var(--ease) var(--d,0s);transform:translateY(26px)}.reveal.on{opacity:1;transform:none}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}.reveal{opacity:1;transform:none}}.logo{align-items:center;gap:10px;display:flex}.logo b{font-family:var(--head);font-size:16px;line-height:1.25;display:block}.logo small{color:var(--muted);font-size:11px;line-height:1.4;display:block}.logo-mark{background:linear-gradient(140deg, var(--brand), var(--brand-2));color:#fff;width:42px;height:42px;box-shadow:var(--shadow-s);border-radius:14px;flex:none;place-items:center;font-size:21px;display:grid}.internal-header{z-index:40;background:var(--surface);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:14px;height:74px;padding:0 clamp(14px,4vw,40px);display:flex;position:sticky;top:0}.internal-header-actions{align-items:center;gap:9px;display:flex}.internal-back,.internal-account,.internal-logout,.internal-advanced,.back{border-radius:var(--r-pill);border:1.5px solid var(--line-2);min-height:40px;font-family:var(--head);color:var(--ink);align-items:center;gap:7px;padding:0 16px;font-size:13px;font-weight:700;transition:all .2s;display:inline-flex}.internal-back:hover,.internal-account:hover,.internal-logout:hover,.internal-advanced:hover,.back:hover{border-color:var(--brand);color:var(--brand)}.internal-account{background:var(--brand);border-color:var(--brand);color:#fff}.internal-account:hover{background:var(--brand-2);border-color:var(--brand-2);color:#fff}.internal-advanced{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.internal-logout{color:var(--muted)}.internal-logout:hover{border-color:var(--no);color:var(--no)}.internal-menu{background:var(--surface-2);border-radius:13px;place-content:center;gap:4px;width:42px;height:42px;display:grid}.internal-menu i{background:var(--ink);border-radius:2px;width:18px;height:2px;display:block}.platform-menu{z-index:80;visibility:hidden;position:fixed;inset:0}.platform-menu.open{visibility:visible}.menu-backdrop{opacity:0;background:#061a1680;transition:opacity .35s;position:absolute;inset:0}.platform-menu.open .menu-backdrop{opacity:1}.menu-panel{background:var(--surface);width:min(380px,88vw);transition:transform .4s var(--ease);padding:24px;position:absolute;inset-block:0;inset-inline-start:0;overflow:auto;transform:translate(-105%)}[dir=rtl] .menu-panel{transform:translate(105%)}.platform-menu.open .menu-panel{transform:none!important}.menu-head{justify-content:space-between;align-items:center;display:flex}.menu-head>button{background:var(--surface-2);width:38px;height:38px;color:var(--muted);border-radius:12px;font-size:22px;line-height:1}.menu-index{border-bottom:1px solid var(--line);color:var(--muted);margin:22px 0 14px;padding-bottom:12px;font-size:12px}.menu-index span{float:left;color:var(--brand);font-family:var(--head);font-weight:700}.menu-panel nav{gap:4px;display:grid}.menu-panel nav a,.menu-panel nav button{border-radius:var(--r-s);text-align:start;font-family:var(--head);color:var(--ink);align-items:center;gap:12px;padding:14px 12px;font-size:15px;font-weight:700;transition:all .2s;display:flex}.menu-panel nav a:hover,.menu-panel nav button:hover{background:var(--surface-2);color:var(--brand)}.menu-panel nav b{min-width:26px;color:var(--brand);font-size:12px}.menu-foot{border-top:1px solid var(--line);color:var(--muted);gap:6px;margin-top:26px;padding-top:16px;font-size:12px;display:grid}.menu-foot small{color:var(--brand);font-size:12.5px}.simple-profile{background:var(--bg);min-height:100vh;color:var(--ink)}.simple-profile-head{background:var(--surface);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;height:74px;padding:0 clamp(14px,4vw,40px);display:flex}.simple-profile-body{width:min(100%,1240px);margin-inline:auto;padding:clamp(22px,4vw,42px) clamp(16px,4vw,40px) 70px}.simple-welcome{border-radius:var(--r-l);background:linear-gradient(150deg, var(--brand), var(--brand-2));color:#fff;box-shadow:var(--shadow-m);padding:clamp(22px,3vw,34px)}.profile-welcome-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:18px;display:flex}.simple-welcome .eyebrow{color:#fffc}.simple-welcome h1{color:#fff;margin:8px 0;font-size:clamp(24px,3vw,34px)}.simple-welcome p{color:#ffffffd1;font-size:14.5px}.profile-grade{border-radius:var(--r-pill);background:#ffffff29;align-items:center;gap:8px;margin-bottom:10px;padding:6px 14px;font-size:13px;display:inline-flex}.eyebrow{font-family:var(--head);color:var(--brand);align-items:center;gap:8px;font-size:12.5px;font-weight:700;display:inline-flex}.course-toolbar{justify-content:space-between;align-items:center;gap:14px;margin:clamp(26px,4vw,40px) 0 16px;display:flex}.course-toolbar h2{font-size:clamp(19px,2.2vw,24px)}.course-toolbar span{border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);font-family:var(--head);padding:6px 14px;font-size:12.5px;font-weight:700}.student-notifications{z-index:20;position:relative}.notification-trigger{color:#fff;background:#ffffff2e;border-radius:15px;place-items:center;width:46px;height:46px;display:grid;position:relative}.notification-bell{width:20px;height:20px}.notification-trigger b{top:-5px;border-radius:var(--r-pill);background:var(--accent);min-width:21px;height:21px;color:var(--accent-ink);place-items:center;padding:0 5px;font-size:11px;font-weight:700;display:grid;position:absolute;inset-inline-end:-5px}.notification-popover{top:56px;border-radius:var(--r-m);background:var(--surface);border:1px solid var(--line);width:min(340px,84vw);max-height:420px;box-shadow:var(--shadow-l);color:var(--ink);padding:14px;position:absolute;inset-inline-end:0;overflow:auto}.notification-head{justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px;display:flex}.notification-head strong{font-family:var(--head)}.notification-head button{color:var(--brand);font-size:12px;font-weight:700}.notification-item{border-radius:var(--r-s);gap:10px;padding:11px;transition:background .2s;display:flex}.notification-item:hover{background:var(--surface-2)}.notification-item.read{opacity:.62}.notification-dot{background:var(--brand);border-radius:50%;flex:none;width:8px;height:8px;margin-top:8px}.notification-item.read .notification-dot{background:var(--line-2)}.notification-item strong{font-size:13.5px;display:block}.notification-item p{color:var(--muted);font-size:12.5px;line-height:1.7}.notification-item small{color:var(--muted);font-size:11px}.notification-empty{color:var(--muted);text-align:center;padding:18px 4px;font-size:13px}.student-tabs,.teacher-tabs{gap:8px;margin:18px 0;padding-bottom:4px;display:flex;overflow-x:auto}.student-tabs button,.teacher-tabs button{border-radius:var(--r-pill);border:1.5px solid var(--line);background:var(--surface);min-height:44px;color:var(--muted);font-family:var(--head);white-space:nowrap;align-items:center;gap:8px;padding:0 18px;font-size:13.5px;font-weight:700;transition:all .2s;display:inline-flex}.student-tabs button:hover,.teacher-tabs button:hover{border-color:var(--brand);color:var(--brand)}.student-tabs button.active,.teacher-tabs button.active{background:var(--brand);border-color:var(--brand);color:#fff}.student-tabs button span{border-radius:var(--r-pill);background:var(--surface-2);color:var(--ink);padding:1px 8px;font-size:11.5px}.student-tabs button.active span{color:#fff;background:#ffffff38}.student-tab-content,.course-list{grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:18px;display:grid}.course-card{border-radius:var(--r-l);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-s);transition:transform .28s var(--ease), box-shadow .28s, border-color .28s;flex-direction:column;display:flex;overflow:hidden}.course-card:hover{box-shadow:var(--shadow-m);border-color:var(--brand);transform:translateY(-6px)}.course-cover{aspect-ratio:16/10;background:linear-gradient(150deg, var(--brand-soft), var(--surface-2));position:relative;overflow:hidden}.course-cover img{object-fit:cover;width:100%;height:100%;display:block}.course-index{top:12px;background:var(--brand);color:#fff;min-width:34px;height:34px;font-family:var(--head);border-radius:11px;place-items:center;font-size:13px;font-weight:700;display:grid;position:absolute;inset-inline-start:12px}.index-1{background:var(--accent);color:var(--accent-ink)}.index-2{background:var(--ink);color:#fff}.course-info{flex:1;padding:17px 18px 12px}.course-info span{color:var(--brand);font-family:var(--head);align-items:center;gap:7px;font-size:12px;font-weight:700;display:inline-flex}.course-info h3{margin:7px 0;font-size:16px;line-height:1.6}.course-info small{color:var(--muted);font-size:12.5px}.course-card>strong{border-radius:var(--r-pill);background:var(--surface-2);color:var(--brand);text-align:center;font-family:var(--head);margin:0 18px 18px;padding:12px;font-size:13.5px;transition:all .2s;display:block}.course-card:hover>strong{background:var(--brand);color:#fff}.compact-card .course-cover{aspect-ratio:16/7}.empty-dashboard{border-radius:var(--r-l);border:1.5px dashed var(--line-2);background:var(--surface);color:var(--muted);text-align:center;grid-column:1/-1;padding:40px 20px;font-size:14px}.student-achievements{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-top:34px;display:grid}.achievement-stat{border-radius:var(--r-l);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-s);padding:22px}.achievement-stat strong{font-family:var(--head);color:var(--brand);font-size:30px;display:block}.achievement-stat span{color:var(--muted);font-size:13px}.achievement-certificates{border-radius:var(--r-l);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-s);grid-column:span 2;padding:22px}.achievement-certificates a{color:var(--brand);font-family:var(--head);margin-top:10px;font-size:13.5px;font-weight:700;display:block}.achievement-certificates p{color:var(--muted);margin-top:10px;font-size:13px}.internal-view .simple-profile-body{padding-top:clamp(20px,3vw,34px)}.internal-title{margin:12px 0 18px;font-size:clamp(24px,3.4vw,38px);line-height:1.35}.internal-description{color:var(--muted);margin-bottom:26px;font-size:14.5px;line-height:1.95}.course-settings-bar,.lesson-settings-bar,.quiz-settings{flex-wrap:wrap;gap:9px;margin:14px 0 22px;display:flex}.course-settings-bar span,.lesson-settings-bar span,.quiz-settings span{border-radius:var(--r-pill);background:var(--surface);border:1px solid var(--line);color:var(--ink-soft);align-items:center;gap:7px;padding:7px 14px;font-size:12.5px;display:inline-flex}.lesson-view{width:min(100%,940px);margin-inline:auto}.lesson-content{color:var(--ink-soft);margin:22px 0;font-size:15.5px;line-height:2}.lesson-content h1,.lesson-content h2,.lesson-content h3{color:var(--ink);margin:26px 0 12px}.lesson-content p{margin:12px 0}.lesson-content img{border-radius:var(--r-m)}.lesson-content a{color:var(--brand);text-underline-offset:4px;text-decoration:underline}.lesson-content ul,.lesson-content ol{padding-inline-start:22px}.lesson-content table{border-collapse:collapse;width:100%;margin:16px 0}.lesson-content th,.lesson-content td{border:1px solid var(--line);padding:10px 12px}.lesson-content iframe,.lesson-content video,.lesson-content .custom-youtube-container,.lesson-content .custom-youtube-player{aspect-ratio:16/9;border-radius:var(--r-m);border:0;min-height:clamp(220px,46vw,540px);width:100%!important;height:auto!important}.lesson-materials{border-radius:var(--r-l);background:var(--surface);border:1px solid var(--line);margin:26px 0;padding:22px}.lesson-materials h2{margin-bottom:10px;font-size:18px}.forced-timer{border-radius:var(--r-l);background:var(--brand-soft);border:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:14px;margin:20px 0;padding:16px 20px;display:flex}.forced-timer strong{font-family:var(--head);color:var(--brand);font-size:22px}.forced-timer small{color:var(--muted);width:100%;font-size:12.5px}.assignment-box{border-radius:var(--r-l);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-s);gap:14px;margin:26px 0;padding:clamp(18px,3vw,28px);display:grid}.assignment-box h2{margin:8px 0 6px;font-size:19px}.assignment-box p{color:var(--muted);font-size:13.5px}.assignment-box input[type=file],.assignment-box textarea,.teacher-editor input,.teacher-editor textarea,.teacher-editor select,.teacher-search,.teacher-bulk-box input,.teacher-bulk-box select,.essay-text{border-radius:var(--r-m);border:1.5px solid var(--line);background:var(--surface-2);width:100%;min-height:50px;color:var(--ink);padding:13px 15px;font-size:14.5px}.assignment-box textarea,.essay-text{resize:vertical;min-height:110px;line-height:1.8}.assignment-history{gap:10px;display:grid}.assignment-history a{border-radius:var(--r-m);background:var(--surface-2);border:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;padding:13px 16px;display:flex}.assignment-history strong{font-size:13.5px}.assignment-history small{color:var(--muted);font-size:12px}.success-msg,.teacher-success{border-radius:var(--r-m);color:var(--ok);background:#2fa87a1f;border:1px solid #2fa87a66;padding:12px 15px;font-size:13.5px}.teacher-error,.teacher-alert{border-radius:var(--r-m);color:var(--no);background:#d9534f1a;border:1px solid #d9534f59;padding:12px 15px;font-size:13.5px}.lesson-navigation{flex-wrap:wrap;justify-content:space-between;gap:12px;margin:30px 0 10px;display:flex}.quiz-view{width:min(100%,940px);margin-inline:auto}.quiz-status-card,.quiz-result-card{border-radius:var(--r-l);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-s);text-align:center;margin-top:22px;padding:clamp(20px,3vw,32px)}.quiz-status-card strong{font-family:var(--head);margin-bottom:8px;font-size:19px;display:block}.quiz-status-card p,.quiz-result-card p{color:var(--muted);font-size:14px}.quiz-result-card strong{font-family:var(--head);color:var(--brand);margin:10px 0;font-size:46px;display:block}.quiz-run{margin-top:20px}.quiz-timer{border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);font-family:var(--head);align-items:center;gap:10px;padding:10px 18px;font-size:13.5px;font-weight:700;display:inline-flex}.quiz-timer b{font-size:17px}.quiz-timer.danger{color:var(--no);background:#d9534f1f}.quiz-questions{gap:16px;margin:20px 0;display:grid}.quiz-question{border-radius:var(--r-l);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-s);padding:clamp(18px,2.6vw,26px)}.quiz-question h2{margin:10px 0 16px;font-size:17.5px;line-height:1.75}.quiz-answers{gap:10px;display:grid}.quiz-answers label{border-radius:var(--r-m);border:1.5px solid var(--line);background:var(--surface-2);cursor:pointer;align-items:center;gap:12px;padding:13px 16px;font-size:14.5px;transition:all .2s;display:flex}.quiz-answers label:hover{border-color:var(--brand)}.quiz-answers input{width:19px;height:19px;accent-color:var(--brand)}.essay-upload{gap:10px;display:grid}.essay-upload input{border-radius:var(--r-m);border:1.5px dashed var(--line-2);background:var(--surface-2);padding:12px}.big-cta,.outline-cta,.danger-cta{border-radius:var(--r-pill);min-height:50px;font-family:var(--head);border:2px solid #0000;justify-content:center;align-items:center;gap:9px;padding:0 26px;font-size:14.5px;font-weight:700;transition:all .22s;display:inline-flex}.big-cta{background:var(--brand);color:#fff;box-shadow:var(--shadow-s)}.big-cta:hover:not(:disabled){background:var(--brand-2);box-shadow:var(--shadow-m);transform:translateY(-2px)}.big-cta:disabled{opacity:.55;cursor:not-allowed}.outline-cta{border-color:var(--line-2);color:var(--ink);background:var(--surface)}.outline-cta:hover{border-color:var(--brand);color:var(--brand)}.danger-cta{color:var(--no);background:#d9534f1f}.danger-cta:hover{background:var(--no);color:#fff}.teacher-shell{background:var(--bg);min-height:100vh;padding-bottom:70px}.teacher-header{background:var(--surface);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:14px;height:74px;padding:0 clamp(14px,4vw,40px);display:flex}.teacher-header>div{align-items:center;gap:10px;display:flex}.teacher-header span{font-family:var(--head);color:var(--muted);font-size:13px}.teacher-hero{width:min(100%,1240px);margin-inline:auto;padding:clamp(24px,4vw,40px) clamp(16px,4vw,40px) 0}.teacher-hero h1{margin:8px 0;font-size:clamp(24px,3vw,34px)}.teacher-hero p{color:var(--muted)}.teacher-tabs{width:min(100%,1240px);margin-inline:auto;padding:0 clamp(16px,4vw,40px)}.teacher-grid{grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;width:min(100%,1240px);margin-inline:auto;padding:0 clamp(16px,4vw,40px);display:grid}.teacher-stat{border-radius:var(--r-l);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-s);padding:22px}.teacher-stat b{font-family:var(--head);color:var(--brand);font-size:32px;display:block}.teacher-stat span{color:var(--muted);font-size:13px}.teacher-panel{border-radius:var(--r-l);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-s);padding:clamp(18px,3vw,28px)}.teacher-wide{grid-column:1/-1}.teacher-list{margin-inline:auto;width:min(100%,1240px);margin-top:18px}.teacher-panel h2{margin:8px 0 14px;font-size:20px}.teacher-panel h3{margin:20px 0 10px;font-size:16px}.teacher-panel-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;margin-bottom:16px;display:flex}.teacher-row,.teacher-course-row,.teacher-student-row{border-radius:var(--r-m);background:var(--surface-2);border:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:10px;padding:14px 16px;display:flex}.teacher-row span,.teacher-course-row h3,.teacher-student-row h3{font-family:var(--head);flex:1;margin:0;font-size:15px}.teacher-row small,.teacher-course-row p,.teacher-student-row p{color:var(--muted);font-size:12.5px}.teacher-course-row img{border-radius:var(--r-s);object-fit:cover;width:62px;height:62px}.teacher-course-row>div,.teacher-student-row>div{flex:1;min-width:180px}.teacher-student-row>span{border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);padding:6px 13px;font-size:12px;font-weight:700}.teacher-editor{gap:12px;margin-bottom:18px;display:grid}.teacher-editor>div{gap:10px;display:flex}.teacher-content-switch{margin-bottom:16px}.teacher-content-switch select{max-width:320px}.teacher-bulk-box{border-radius:var(--r-l);background:var(--surface-2);border:1px solid var(--line);gap:12px;margin-bottom:18px;padding:18px;display:grid}.bulk-students{grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:8px;max-height:280px;padding:4px;display:grid;overflow:auto}.bulk-students label{border-radius:var(--r-s);background:var(--surface);border:1px solid var(--line);cursor:pointer;align-items:center;gap:10px;padding:10px 12px;font-size:13.5px;display:flex}.bulk-students small{color:var(--muted);font-size:11.5px;display:block}.bulk-actions{flex-wrap:wrap;gap:10px;display:flex}.teacher-report-cards{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin:16px 0;display:grid}.teacher-report-cards div{border-radius:var(--r-m);background:var(--surface-2);border:1px solid var(--line);padding:18px}.teacher-report-cards b{font-family:var(--head);color:var(--brand);font-size:26px;display:block}.teacher-report-cards span{color:var(--muted);font-size:12.5px}.report-bar{align-items:center;gap:12px;margin-bottom:10px;font-size:13px;display:flex}.report-bar span{min-width:110px;color:var(--muted)}.report-bar i{border-radius:var(--r-pill);background:var(--surface-2);flex:1;height:8px;overflow:hidden}.report-bar i b{background:var(--brand);height:100%;display:block}.scroll-top{z-index:45;inset-inline-end:20px;background:var(--brand);color:#fff;width:46px;height:46px;box-shadow:var(--shadow-m);opacity:0;visibility:hidden;transition:.3s var(--ease);border-radius:50%;place-items:center;display:grid;position:fixed;bottom:22px;transform:translateY(12px)}.scroll-top.visible{opacity:1;visibility:visible;transform:none}.scroll-arrow{border-top:2px solid;border-left:2px solid;width:10px;height:10px;margin-top:4px;display:block;transform:rotate(45deg)}@media (width<=700px){.internal-header,.simple-profile-head,.teacher-header{height:66px}.internal-back,.internal-advanced{display:none}.achievement-certificates{grid-column:1/-1}.lesson-navigation .big-cta,.lesson-navigation .outline-cta{width:100%}}.top{z-index:60;top:12px;background:var(--surface);height:66px;box-shadow:var(--shadow-m);transition:box-shadow .3s var(--ease), background .3s var(--ease);border-radius:20px;align-items:center;gap:14px;padding:0 12px 0 14px;display:flex;position:fixed;inset-inline:clamp(10px,2vw,22px);overflow:hidden}.top-bar{inset-inline-start:0;background:linear-gradient(to left, var(--brand), var(--accent));width:0;height:3px;transition:width .12s linear;position:absolute;bottom:0}.brand{align-items:center;gap:10px;display:flex}.brand-mark{background:linear-gradient(140deg, var(--brand), var(--brand-2));color:#fff;width:42px;height:42px;box-shadow:var(--shadow-s);border-radius:14px;flex:none;place-items:center;display:grid}.brand b{font-family:var(--head);font-size:16px;line-height:1.25;display:block}.brand small{color:var(--muted);font-size:11px;line-height:1.4;display:block}.top-actions{align-items:center;gap:10px;margin-inline-start:auto;display:flex}.theme-switch{border-radius:var(--r-pill);background:var(--brand);color:#fff;flex:none;justify-content:space-around;align-items:center;width:74px;height:36px;display:flex;position:relative}.theme-switch .ic{z-index:2;font-size:15px;position:relative}.theme-switch:before{content:"";z-index:1;top:3px;background:var(--surface);width:30px;height:30px;transition:transform .3s var(--ease);border-radius:50%;position:absolute;inset-inline-start:3px}:root[data-theme=dark] .theme-switch:before{transform:translate(-38px)}.theme-switch .on-light{color:var(--brand)}:root[data-theme=dark] .theme-switch .on-light{color:#fff}:root[data-theme=dark] .theme-switch .on-dark{color:var(--brand)}.burger{background:var(--surface-2);width:42px;height:42px;color:var(--ink);border-radius:13px;justify-content:center;align-items:center;display:none}.sheet{z-index:70;visibility:hidden;position:fixed;inset:0}.sheet.open{visibility:visible}.sheet-back{opacity:0;background:#061a1680;transition:opacity .35s;position:absolute;inset:0}.sheet.open .sheet-back{opacity:1}.sheet-panel{background:var(--surface);width:min(320px,86vw);transition:transform .4s var(--ease);flex-direction:column;gap:16px;padding:22px;display:flex;position:absolute;inset-block:0;inset-inline-start:0;transform:translate(-105%)}[dir=rtl] .sheet-panel{transform:translate(105%)}.sheet.open .sheet-panel{transform:none!important}.sheet-head{justify-content:space-between;align-items:center;display:flex}.sheet-nav{gap:4px;margin-top:6px;display:grid}.sheet-nav a,.sheet-nav button{border-radius:var(--r-s);font-family:var(--head);text-align:start;color:var(--ink);align-items:center;gap:12px;padding:13px 12px;font-weight:700;display:flex}.sheet-nav a:hover,.sheet-nav button:hover{background:var(--surface-2);color:var(--brand)}.sheet-cta{gap:10px;margin-top:auto;display:grid}.page{padding-top:92px}.hero{background:radial-gradient(120% 90% at 80% 0%, var(--brand-soft), transparent 60%), linear-gradient(180deg, var(--bg-2), var(--bg));padding:clamp(28px,5vw,64px) 0 clamp(48px,7vw,90px);position:relative;overflow:hidden}.hero:before{content:"";opacity:.5;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cg fill='none' stroke='%2312806a' stroke-opacity='.16' stroke-width='1.2'%3E%3Ccircle cx='20' cy='20' r='5'/%3E%3Ccircle cx='80' cy='40' r='5'/%3E%3Ccircle cx='45' cy='85' r='5'/%3E%3Ccircle cx='105' cy='95' r='5'/%3E%3Cpath d='M25 20h50M80 45 48 82M50 85l50 8'/%3E%3C/g%3E%3C/svg%3E");position:absolute;inset:0}.hero-in{z-index:2;grid-template-columns:1.05fr .95fr;align-items:center;gap:clamp(24px,4vw,56px);display:grid;position:relative}.eyebrow{font-family:var(--head);color:var(--brand);font-size:clamp(14px,1.5vw,17px);font-weight:800}.hero h1{margin:14px 0 20px;font-size:clamp(32px,4.6vw,54px);line-height:1.28}.hero h1 em{color:var(--brand);font-style:normal}.hero-lead{font-family:var(--head);color:var(--ink);font-size:clamp(15px,1.6vw,18px);font-weight:700}.hero-text{color:var(--muted);max-width:470px;margin-top:10px;font-size:15px}.hero-cta{flex-wrap:wrap;gap:12px;margin-top:28px;display:flex}.hero-stats{border-top:1px solid var(--line);flex-wrap:wrap;gap:10px 26px;margin-top:30px;padding-top:22px;display:flex}.hero-stats b{font-family:var(--head);color:var(--brand);font-size:21px;display:block}.hero-stats span{color:var(--muted);font-size:12.5px;display:block}.hero-art{aspect-ratio:1;isolation:isolate;place-items:center;display:grid;position:relative}.physics-scene{z-index:1;pointer-events:none;filter:drop-shadow(0 18px 28px #15539a24);position:absolute;inset:0}.physics-orbit{border:1px solid color-mix(in srgb, var(--brand) 42%, transparent);border-radius:50%;animation:18s linear infinite orbit-spin;position:absolute;inset:14%;transform:rotate(28deg)}.orbit-b{border-color:color-mix(in srgb, var(--accent-2) 58%, transparent);animation-duration:13s;animation-direction:reverse;inset:8% 20%;transform:rotate(-58deg)}.orbit-c{opacity:.7;border-style:dashed;animation-duration:25s;inset:22% 4%;transform:rotate(72deg)}.physics-core{aspect-ratio:1;background:var(--accent);width:8%;box-shadow:0 0 0 8px color-mix(in srgb, var(--accent) 15%, transparent), 0 0 34px color-mix(in srgb, var(--accent) 70%, transparent);border-radius:50%;animation:2.4s ease-in-out infinite core-pulse;position:absolute;inset:46%}.physics-particle{background:var(--brand);width:12px;height:12px;box-shadow:0 0 18px color-mix(in srgb, var(--brand) 75%, transparent);border-radius:50%;animation:5s ease-in-out infinite particle-drift;position:absolute}.particle-a{top:16%;animation-delay:-1.1s;inset-inline-start:30%}.particle-b{top:67%;background:var(--accent-2);animation-delay:-3.2s;inset-inline-end:12%}.particle-c{bottom:12%;animation-delay:-4.2s;inset-inline-start:22%}.physics-vector,.physics-formula{z-index:3;border:1px solid color-mix(in srgb, var(--brand) 20%, transparent);background:color-mix(in srgb, var(--surface) 88%, transparent);color:var(--brand-2);font-family:var(--head);letter-spacing:.02em;border-radius:10px;padding:6px 10px;font-size:12px;font-weight:800;animation:6s ease-in-out infinite formula-float;position:absolute}.vector-x{top:17%;color:var(--accent-2);animation-delay:-2s;inset-inline-end:3%}.vector-y{bottom:25%;animation-delay:-4s;inset-inline-start:0}.formula-a{top:35%;animation-delay:-1s;inset-inline-start:4%}.formula-b{bottom:9%;animation-delay:-3.8s;inset-inline-end:28%}.physics-wave{inset-inline-start:-3%;opacity:.55;background:repeating-radial-gradient(ellipse at 100% 50%, transparent 0 8px, var(--brand) 9px 10px, transparent 11px 18px);clip-path:polygon(0 50%,8% 35%,16% 68%,24% 18%,32% 83%,40% 30%,48% 70%,56% 22%,64% 76%,72% 38%,80% 62%,88% 30%,100% 50%,100% 56%,0 56%);width:38%;height:46px;animation:4.8s linear infinite wave-shift;position:absolute;bottom:12%}.hero-blob{background:linear-gradient(150deg, var(--accent), var(--brand-soft));opacity:.5;border-radius:46% 54% 40% 60%/52% 44% 56% 48%;animation:16s ease-in-out infinite blob;position:absolute;inset:6%}.hero-photo{z-index:2;aspect-ratio:1;border:6px solid var(--surface);width:78%;box-shadow:var(--shadow-l);border-radius:32px;position:relative;overflow:hidden}.hero-photo img{object-fit:cover;width:100%;height:100%;display:block}.sticker{z-index:3;background:var(--surface);box-shadow:var(--shadow-m);font-family:var(--head);border-radius:16px;align-items:center;gap:8px;padding:10px 15px;font-size:13px;font-weight:700;animation:7s ease-in-out infinite bob;display:flex;position:absolute}.sticker .ic{color:var(--brand);font-size:16px}.sticker-1{top:6%;inset-inline-end:0}.sticker-2{top:44%;animation-delay:-2.3s;inset-inline-start:-2%}.sticker-3{bottom:4%;animation-delay:-4.6s;inset-inline-end:6%}.sticker-3 .ic{color:var(--accent-2)}@keyframes blob{0%,to{border-radius:46% 54% 40% 60%/52% 44% 56% 48%}50%{border-radius:58% 42% 56% 44%/42% 58%}}@keyframes bob{0%,to{transform:translateY(0)}50%{transform:translateY(-9px)}}@keyframes orbit-spin{0%{transform:rotate(0)scale(1)}50%{opacity:.55}to{transform:rotate(360deg)scale(1.04)}}@keyframes core-pulse{0%,to{transform:scale(.85)}50%{transform:scale(1.15)}}@keyframes particle-drift{0%,to{transform:translate(0)}35%{transform:translate(18px,-14px)}70%{transform:translate(-10px,12px)}}@keyframes formula-float{0%,to{transform:translateY(0)rotate(-2deg)}50%{transform:translateY(-13px)rotate(2deg)}}@keyframes wave-shift{0%{transform:translate(0)}to{transform:translate(26px)}}.sec{padding:clamp(48px,7vw,88px) 0}.sec-head{text-align:center;max-width:720px;margin:0 auto clamp(30px,4vw,50px)}.sec-head h2{font-size:clamp(26px,3.6vw,42px)}.sec-head h2 em{color:var(--brand);font-style:normal}.sec-head p{color:var(--muted);margin-top:12px}.notes{grid-template-columns:1fr .92fr 1fr;align-items:center;gap:clamp(16px,2.4vw,30px);display:grid}.notes-col{gap:clamp(16px,2.4vw,28px);display:grid}.note{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-m);transition:transform .3s var(--ease), box-shadow .3s;border-radius:20px;padding:30px 26px 26px;position:relative}.notes-col .note:nth-child(2n){background:var(--accent);color:var(--accent-ink);border-color:#0000}.notes-col .note:nth-child(2n) p{color:#17331bbf}.notes-col:last-child .note:nth-child(odd){background:var(--accent);color:var(--accent-ink);border-color:#0000}.notes-col:last-child .note:nth-child(odd) p{color:#17331bbf}.notes-col:last-child .note:nth-child(2n){background:var(--surface);border-color:var(--line);color:var(--ink)}.notes-col:last-child .note:nth-child(2n) p{color:var(--muted)}.notes-col .note:nth-child(odd){transform:rotate(-1.2deg)}.notes-col .note:nth-child(2n){transform:rotate(1.2deg)}.note:hover{box-shadow:var(--shadow-l);transform:rotate(0)translateY(-6px)}.note-pin{top:-14px;background:var(--brand);color:#fff;width:30px;height:30px;box-shadow:var(--shadow-s);border-radius:50%;place-items:center;display:grid;position:absolute;inset-inline-end:22px}.note h3{margin-bottom:8px;font-size:19px}.note p{color:var(--muted);font-size:14px;line-height:1.85}.notes-center{place-items:center;display:grid}.notes-center>div{aspect-ratio:1;border:8px solid var(--surface);width:min(100%,300px);box-shadow:var(--shadow-l);background:linear-gradient(150deg, var(--brand), var(--accent));border-radius:50%;overflow:hidden}.notes-center img{object-fit:cover;width:100%;height:100%}.grades{grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(14px,2vw,22px);display:grid}.grade{text-align:start;border-radius:var(--r-l);background:var(--surface);border:1px solid var(--line);width:100%;box-shadow:var(--shadow-s);transition:transform .28s var(--ease), box-shadow .28s, border-color .28s;padding:28px 26px;display:block}.grade:hover{box-shadow:var(--shadow-m);border-color:var(--brand);transform:translateY(-6px)}.grade h3{color:var(--brand);font-size:25px}.grade b{font-family:var(--head);margin:10px 0 14px;font-size:15px;display:block}.grade span{color:var(--muted);align-items:center;gap:8px;font-size:13.5px;display:inline-flex}.grade:hover span{color:var(--brand)}.game-in{grid-template-columns:.85fr 1.15fr;align-items:center;gap:clamp(24px,4vw,54px);display:grid}.game-copy h2{font-size:clamp(26px,3.4vw,40px)}.game-copy h2 em{color:var(--brand);font-style:normal}.game-copy p{color:var(--muted);margin:14px 0 24px}.game-card{border-radius:var(--r-l);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-m);padding:clamp(20px,3vw,32px)}.game-top{justify-content:space-between;align-items:center;gap:12px;display:flex}.game-track{border-radius:var(--r-pill);background:var(--surface-2);border:1px solid var(--line);height:7px;margin:16px 0 22px;overflow:hidden}.game-track i{background:linear-gradient(to left, var(--brand), var(--accent));height:100%;transition:width .5s var(--ease);display:block}.game-q{font-size:clamp(18px,2.2vw,23px);line-height:1.6}.answers{gap:10px;margin-top:20px;display:grid}.answer{border-radius:var(--r-m);border:1.5px solid var(--line);background:var(--surface-2);width:100%;min-height:60px;color:var(--ink);font-family:var(--head);text-align:start;transition:transform .2s var(--ease), border-color .2s, background .2s;align-items:center;gap:13px;padding:12px 16px;font-size:15px;font-weight:700;display:flex}.answer i{border:1.5px solid var(--line-2);background:var(--surface);width:30px;height:30px;color:var(--muted);border-radius:10px;flex:none;place-items:center;font-size:13px;font-style:normal;transition:all .2s;display:grid}.answer:not(:disabled):hover{border-color:var(--brand);transform:translate(-4px)}.answer:not(:disabled):hover i{background:var(--brand);border-color:var(--brand);color:#fff}.answer:disabled{cursor:default}.answer.right{border-color:var(--ok);background:#2fa87a1a}.answer.right i{background:var(--ok);border-color:var(--ok);color:#fff}.answer.wrong{border-color:var(--no);background:#d9534f17}.answer.wrong i{background:var(--no);border-color:var(--no);color:#fff}.game-note{border-radius:var(--r-m);background:var(--brand-soft);color:var(--ink-soft);gap:11px;margin-top:18px;padding:15px 17px;font-size:14px;line-height:1.8;display:flex}.game-note .ic{color:var(--brand);margin-top:3px;font-size:18px}.game-foot{justify-content:flex-end;margin-top:20px;display:flex}.game-score{text-align:center}.score-ring{background:conic-gradient(var(--brand) calc(var(--p,0) * 1%), var(--surface-2) 0);border-radius:50%;place-items:center;width:140px;height:140px;margin:0 auto 18px;display:grid;position:relative}.score-ring:before{content:"";background:var(--surface);border-radius:50%;position:absolute;inset:10px}.score-ring div{font-family:var(--head);font-size:30px;font-weight:800;position:relative}.score-ring small{color:var(--muted);font-size:12px;font-weight:400;display:block}.game-score h3{margin-bottom:8px;font-size:22px}.game-score p{color:var(--muted)}.score-cta{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:22px;display:flex}.board{background:var(--accent);color:var(--accent-ink);text-align:center;box-shadow:var(--shadow-m);border-radius:28px;padding:clamp(38px,6vw,64px) clamp(22px,4vw,48px);position:relative}.board:before,.board:after,.board>i:first-child,.board>i:nth-child(2){content:"";background:var(--bg);border-radius:50%;width:14px;height:14px;position:absolute;box-shadow:inset 0 1px 2px #00000040}.board:before{top:18px;inset-inline-start:18px}.board:after{top:18px;inset-inline-end:18px}.board>i:first-child{bottom:18px;inset-inline-start:18px}.board>i:nth-child(2){bottom:18px;inset-inline-end:18px}.board h2{color:var(--brand-2);font-size:clamp(26px,4vw,44px)}.board p{font-family:var(--head);margin:12px 0 26px;font-weight:700}.foot{background:var(--surface);border-top:1px solid var(--line);padding:clamp(34px,5vw,56px) 0 22px}.foot-grid{grid-template-columns:1.4fr repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px);display:grid}.foot-about p{color:var(--muted);max-width:300px;margin-top:14px;font-size:14px}.foot h4{margin-bottom:14px;font-size:15px}.foot ul{gap:10px;margin:0;padding:0;list-style:none;display:grid}.foot li a,.foot li button{color:var(--muted);align-items:center;gap:9px;font-size:14px;transition:color .2s;display:inline-flex}.foot-bottom{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-top:34px;padding-top:18px;font-size:13px;display:flex}.auth{min-height:100vh;padding:96px 0 44px}.auth-in{grid-template-columns:1fr 1fr;align-items:stretch;gap:clamp(16px,2.6vw,30px);display:grid}.auth-art{border-radius:var(--r-l);min-height:540px;box-shadow:var(--shadow-m);position:relative;overflow:hidden}.auth-art img{object-fit:cover;width:100%;height:100%;display:block}.auth-art:after{content:"";background:linear-gradient(200deg,#12806a59,#0f2a24b8);position:absolute;inset:0}.auth-art-copy{z-index:2;inset-inline:34px;color:#fff;position:absolute;bottom:34px}.auth-art-copy h2{color:#fff;font-size:clamp(24px,2.6vw,34px)}.auth-art-copy p{color:#ffffffd9;margin-top:10px;font-size:14.5px}.auth-art-steps{gap:10px;margin-top:20px;display:grid}.auth-art-steps div{align-items:center;gap:11px;font-size:14px;display:flex}.auth-art-steps b{background:var(--accent);width:30px;height:30px;color:var(--accent-ink);font-family:var(--head);border-radius:10px;flex:none;place-items:center;font-size:13px;display:grid}.auth-panel{border-radius:var(--r-l);background:var(--surface-2);border:1px solid var(--line);flex-direction:column;justify-content:center;padding:clamp(24px,3vw,44px);display:flex}.auth-form{width:min(100%,430px);margin-inline:auto}.auth-logo{text-align:center;place-items:center;gap:10px;margin-bottom:18px;display:grid}.auth-panel h1{text-align:center;font-size:clamp(22px,2.4vw,28px)}.auth-panel>.auth-form>p{text-align:center;color:var(--muted);margin:10px 0 22px;font-size:14.5px}.auth-steps{margin-bottom:22px}.auth-steps-top{font-family:var(--head);color:var(--brand);justify-content:space-between;align-items:center;font-size:13px;display:flex}.auth-steps-track{background:var(--line);border-radius:var(--r-pill);height:3px;margin-top:8px;overflow:hidden}.auth-steps-track i{background:var(--brand);height:100%;transition:width .4s var(--ease);display:block}.auth-rows{grid-template-columns:1fr 1fr;gap:16px;display:grid}.auth-rows.one-col{grid-template-columns:1fr}.auth-rows>.auth-wide,.auth-rows>.alert,.auth-rows>.btn,.auth-rows>.auth-check,.auth-rows>.auth-loading{grid-column:1/-1}.auth-loading{text-align:center;color:var(--muted);padding:18px 0;font-size:14px}.auth-two{grid-template-columns:1fr 1fr;gap:14px;display:grid}.field.stacked{grid-template-columns:auto 1fr;align-items:start;column-gap:10px;padding-top:12px;display:grid}.field.stacked>.ic{margin-top:3px}.field-label{color:var(--muted);grid-column:2;font-size:12.5px;font-weight:700}.field.stacked .choice-group,.field.stacked textarea,.field.stacked select,.field.stacked input{grid-column:2}.choice-group{flex-wrap:wrap;gap:8px;padding:6px 0 8px;display:flex}.choice{border-radius:var(--r-pill);border:1.5px solid var(--line);background:var(--surface);cursor:pointer;align-items:center;gap:8px;padding:8px 14px;font-size:13.5px;transition:all .2s;display:inline-flex}.choice:hover{border-color:var(--brand)}.choice.on{border-color:var(--brand);background:var(--brand-soft);color:var(--brand);font-weight:700}.choice input{width:16px;height:16px;accent-color:var(--brand)}.field textarea{min-height:92px;color:var(--ink);resize:vertical;background:0 0;border:0;outline:none;flex:1;padding:10px 0;font-size:15px;line-height:1.8}.auth-row-links{justify-content:flex-start;display:flex}.link-btn{color:var(--brand);font-family:var(--head);text-underline-offset:4px;font-size:13px;font-weight:700;text-decoration:underline}.auth-check{color:var(--muted);cursor:pointer;align-items:center;gap:9px;font-size:14px;display:flex}.auth-check input{width:18px;height:18px;accent-color:var(--brand)}.auth-switch{text-align:center;color:var(--muted);margin-top:20px;font-size:14px}.alert{border-radius:var(--r-m);color:var(--no);background:#d9534f1a;border:1px solid #d9534f59;gap:9px;padding:12px 15px;font-size:13.5px;line-height:1.7;display:flex}.alert .ic{margin-top:3px}@media (width<=1000px){.hero-in,.game-in,.auth-in{grid-template-columns:1fr}.hero-art{width:min(100%,420px);margin-inline:auto}.hero-copy{text-align:center}.hero-text{margin-inline:auto}.hero-cta,.hero-stats{justify-content:center}.notes{grid-template-columns:1fr 1fr}.notes-center{order:-1;grid-column:1/-1}.notes-center>div{width:min(100%,240px)}.grades{grid-template-columns:1fr}.foot-grid{grid-template-columns:1fr 1fr}.auth-art{min-height:260px}.auth-art-copy{inset-inline:22px;bottom:22px}.auth-art-steps{display:none}}@media (width<=640px){.top{height:60px;padding-inline:10px}.top .brand small,.top-actions .btn{display:none}.burger{display:inline-flex}.page{padding-top:84px}.notes{grid-template-columns:1fr}.notes-col{gap:16px}.note:nth-child(odd),.note:nth-child(2n){transform:none}.hero-cta{width:100%;display:grid}.hero-cta .btn{width:100%}.foot-grid,.auth-two,.auth-rows{grid-template-columns:1fr}.auth{padding-top:88px}.score-cta{display:grid}}.hero-photo,.auth-art,.notes-center>div{background:linear-gradient(145deg,#0b2c63 0%,#123f83 48%,#071a3b 100%)}.hero-photo img,.notes-center img,.auth-art img{object-position:center top}.hero-photo img,.auth-art img,.notes-center img{object-fit:cover}.foot{color:#f4f8ff;background:radial-gradient(circle at 12% 18%,#2a6ccf38,#0000 30%),radial-gradient(circle at 88% 12%,#1cbea429,#0000 26%),linear-gradient(145deg,#06152f 0%,#0a2348 52%,#07152f 100%);border-top:1px solid #7ab1ff33;position:relative;overflow:hidden}.foot:before{content:"";pointer-events:none;background:linear-gradient(90deg,#0000,#ffffff09,#0000);position:absolute;inset:0}.foot .brand b,.foot h4{color:#fff}.foot .brand small,.foot-about p,.foot li a,.foot li button,.foot-bottom,.foot-credit-copy{color:#e2edffb8}.foot li a:hover,.foot li button:hover{color:#65e2ca}.foot-credit{background:linear-gradient(120deg,#14407cb8,#0b244bc2);border:1px solid #78b9ff38;border-radius:24px;justify-content:space-between;align-items:center;gap:24px;margin-top:38px;padding:20px 22px;display:flex;position:relative;box-shadow:0 18px 50px #0003,inset 0 1px #ffffff14}.foot-credit-kicker,.foot-credit-copy,.foot-credit-link small{font-size:12px;display:block}.foot-credit-kicker{color:#65e2ca;letter-spacing:.04em;font-weight:700}.foot-credit strong{color:#fff;font-family:var(--head);margin-top:4px;font-size:21px;display:block}.foot-credit-copy{margin-top:5px}.foot-credit-link{color:#06152f;min-width:210px;font-family:var(--head);background:linear-gradient(135deg,#65e2ca,#c9f56e);border-radius:16px;align-items:center;gap:10px;padding:12px 15px;font-weight:800;transition:transform .2s,box-shadow .2s;display:inline-flex}.foot-credit-link:hover{color:#06152f;transform:translateY(-3px);box-shadow:0 12px 28px #65e2ca3d}.foot-credit-link svg{width:22px;height:22px}.foot-credit-link span{flex:1}.foot-credit-link small{font-family:var(--body);opacity:.7;font-weight:600}@media (width<=620px){.foot-credit{flex-direction:column;align-items:stretch}.foot-credit-link{width:100%}}@media (width<=760px){.physics-scene{opacity:.82;transform:scale(.9)}.physics-formula,.physics-vector{padding:5px 7px;font-size:10px}.physics-wave{width:34%}}@media (prefers-reduced-motion:reduce){.physics-orbit,.physics-core,.physics-particle,.physics-vector,.physics-formula,.physics-wave,.hero-blob,.sticker{animation:none!important}}.px-site{--px-ink:#071a35;--px-navy:#071a35;--px-blue:#2367db;--px-cyan:#52c7ff;--px-yellow:#ffc83d;--px-orange:#ff8c42;--px-paper:#f4f8ff;--px-muted:#60728e;--px-line:#dce7f5;min-height:100vh;color:var(--px-ink);background:var(--px-paper);font-family:Tajawal,sans-serif;overflow:hidden}.px-site *,.px-site :before,.px-site :after{box-sizing:border-box}.px-container{width:min(1180px,100% - 48px);margin:auto}.px-nav{z-index:20;top:0;align-items:center;gap:42px;width:min(1180px,100% - 48px);height:88px;margin:auto;display:flex;position:absolute;inset-inline:0}.px-logo{color:var(--px-ink);align-items:center;gap:10px;text-decoration:none;display:inline-flex}.px-logo-mark{color:#fff;background:linear-gradient(145deg,var(--px-blue),#102f91);border-radius:13px;place-items:center;width:42px;height:42px;display:grid;box-shadow:0 10px 24px #2367db35}.px-logo b{font-family:Almarai,sans-serif;font-size:18px;line-height:1.1;display:block}.px-logo small{color:#8090a6;margin-top:4px;font-size:10px;display:block}.px-nav-links{align-items:center;gap:30px;margin-inline:auto;display:flex}.px-nav-links a{color:#62738c;font-size:14px;font-weight:700;text-decoration:none;transition:all .25s}.px-nav-links a:hover{color:var(--px-blue)}.px-nav-actions{align-items:center;gap:10px;display:flex}.px-login,.px-start,.px-primary,.px-watch,.px-dark-button{cursor:pointer;border:0;font-family:inherit;font-weight:800;text-decoration:none}.px-login{color:var(--px-ink);background:0 0;padding:12px 14px}.px-start,.px-primary{color:#fff;background:var(--px-blue);border-radius:12px;align-items:center;gap:10px;padding:13px 20px;transition:all .25s;display:inline-flex;box-shadow:0 12px 22px #2367db35}.px-start:hover,.px-primary:hover{background:#164db9;transform:translateY(-3px);box-shadow:0 16px 30px #2367db4a}.px-menu{background:#fff;border:0;border-radius:11px;width:42px;height:42px;padding:10px;display:none}.px-menu span{background:var(--px-ink);height:2px;margin:4px 0;display:block}.px-hero{background:linear-gradient(120deg,#f8fbff 0%,#edf5ff 52%,#e6f2ff 100%);align-items:center;min-height:740px;padding:150px 0 86px;display:flex;position:relative}.px-hero:after{content:"";inset-inline:0;background:var(--px-paper);clip-path:polygon(0 48%,18% 65%,37% 34%,55% 61%,74% 23%,100% 50%,100% 100%,0 100%);height:100px;position:absolute;bottom:-1px}.px-hero-glow{filter:blur(3px);pointer-events:none;border-radius:50%;position:absolute}.glow-one{top:30px;background:#52c7ff22;width:420px;height:420px;inset-inline-start:-170px}.glow-two{bottom:50px;background:#ffc83d20;width:260px;height:260px;inset-inline-end:4%}.px-hero-grid{z-index:2;grid-template-columns:1.02fr .98fr;align-items:center;gap:65px;display:grid;position:relative}.px-hero-copy{padding-top:10px}.px-kicker{color:var(--px-blue);letter-spacing:.01em;align-items:center;gap:9px;font-size:13px;font-weight:800;display:inline-flex}.px-kicker i{background:var(--px-yellow);border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 5px #ffc83d2a}.px-hero h1{letter-spacing:-.045em;margin:18px 0;font-family:Almarai,sans-serif;font-size:clamp(40px,5.5vw,76px);line-height:1.17}.px-hero h1 strong{color:var(--px-blue);font-weight:800;position:relative}.px-hero h1 strong:after{content:"";z-index:-1;inset-inline:0;background:#ffc83d66;height:13px;position:absolute;bottom:-3px;transform:skew(-14deg)}.px-hero-copy>p{max-width:535px;color:var(--px-muted);font-size:17px;line-height:2}.px-hero-actions{align-items:center;gap:22px;margin-top:30px;display:flex}.px-primary{background:var(--px-yellow);color:#171d2a;border-radius:14px;padding:16px 25px;box-shadow:0 14px 30px #ffc83d52}.px-primary:hover{color:#111;background:#ffb900}.px-watch{color:var(--px-ink);align-items:center;gap:10px;font-size:14px;display:inline-flex}.px-watch span{width:34px;height:34px;color:var(--px-blue);background:#fff;border-radius:50%;place-items:center;font-size:11px;display:grid;box-shadow:0 8px 22px #1a428220}.px-proof{border-top:1px solid var(--px-line);gap:36px;margin-top:42px;padding-top:22px;display:flex}.px-proof b{color:var(--px-blue);font-family:Almarai,sans-serif;font-size:22px;display:block}.px-proof span{color:#7b8ba2;margin-top:4px;font-size:12px;display:block}.px-hero-art{place-items:center;min-height:505px;display:grid}.px-visual{aspect-ratio:1;width:min(100%,510px);position:relative}.px-grid{opacity:.52;background-image:linear-gradient(#2367db12 1px,#0000 1px),linear-gradient(90deg,#2367db12 1px,#0000 1px);background-size:25px 25px;border-radius:50%;animation:8s ease-in-out infinite grid-pulse;position:absolute;inset:6%;-webkit-mask-image:radial-gradient(circle,#000 10%,#0000 68%);mask-image:radial-gradient(circle,#000 10%,#0000 68%)}.px-ring{border:1px solid #2367db55;border-radius:50%;position:absolute;transform:rotate(35deg)}.ring-one{animation:18s linear infinite spin-x;inset:5% 15%}.ring-two{border-style:dashed;border-color:#ffb90088;animation:23s linear infinite spin-y;inset:14% 4%;transform:rotate(-58deg)}.ring-three{border-color:#52c7ff99;animation:12s linear infinite reverse spin-x;inset:22%}.px-orbit-dot{background:var(--px-blue);border-radius:50%;width:15px;height:15px;position:absolute;box-shadow:0 0 0 7px #2367db22,0 0 25px #2367db99}.dot-one{top:10%;animation:5s ease-in-out infinite dot-float;inset-inline-end:29%}.dot-two{bottom:18%;background:var(--px-orange);animation:6s ease-in-out -2s infinite dot-float;inset-inline-start:13%}.dot-three{top:46%;background:var(--px-yellow);animation:4.5s ease-in-out -1s infinite dot-float;inset-inline-start:3%}.px-photo-frame{z-index:3;aspect-ratio:1;border:8px solid #fff;border-radius:46% 54% 52% 48%;width:62%;animation:7s ease-in-out infinite photo-breathe;position:absolute;inset:19%;overflow:hidden;box-shadow:0 26px 60px #143b7133}.px-photo-frame img{object-fit:cover;width:100%;height:100%}.px-equation{z-index:4;color:var(--px-blue);background:#fff;border-radius:9px;padding:8px 12px;font-family:Almarai,sans-serif;font-size:12px;font-weight:800;animation:5s ease-in-out infinite formula-float;position:absolute;box-shadow:0 10px 25px #143b7122}.eq-one{top:18%;inset-inline-start:4%}.eq-two{bottom:18%;color:var(--px-orange);animation-delay:-2s;inset-inline-end:3%}.eq-three{bottom:3%;color:#2367db;animation-delay:-3.5s;inset-inline-start:23%}.px-chip{z-index:5;color:#25344c;background:#fff;border-radius:12px;align-items:center;gap:8px;padding:10px 14px;font-size:12px;font-weight:800;animation:5s ease-in-out infinite chip-float;display:flex;position:absolute;box-shadow:0 14px 32px #173b6826}.chip-top{top:12%;inset-inline-end:0}.chip-bottom{bottom:12%;animation-delay:-2.2s;inset-inline-start:0}.chip-top .ic{color:var(--px-blue)}.px-pulse{background:#42cd8b;border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 5px #42cd8b25}.px-axis{z-index:1;background:#2367db33;position:absolute}.axis-x{top:50%;width:48%;height:1px;inset-inline:26%}.axis-y{inset-inline-start:50%;width:1px;height:48%;top:26%}.px-scroll-hint{z-index:3;bottom:70px;color:#8090a6;flex-direction:column;align-items:center;gap:8px;font-size:10px;display:flex;position:absolute;inset-inline-start:50%;transform:translate(-50%)}.px-scroll-hint i{background:var(--px-blue);width:1px;height:32px;animation:1.8s ease-in-out infinite scroll-line}.px-section{padding:125px 0}.px-section-head{max-width:600px;margin-bottom:55px}.px-section-head.compact{text-align:center;margin-inline:auto}.px-section-head h2{letter-spacing:-.04em;margin:16px 0 12px;font-family:Almarai,sans-serif;font-size:clamp(31px,4vw,52px);line-height:1.3}.px-section-head h2 em,.px-about-copy em,.px-challenge-copy em{color:var(--px-blue);font-style:normal}.px-section-head p{color:var(--px-muted);line-height:1.9}.px-benefit-grid{grid-template-columns:repeat(4,1fr);gap:16px;display:grid}.px-benefit{border:1px solid var(--px-line);background:#fff;border-radius:18px;min-height:278px;padding:28px 22px 24px;transition:all .35s;position:relative;overflow:hidden;box-shadow:0 12px 35px #153e6e09}.px-benefit:after{content:"";top:-60px;background:#2367db0d;border-radius:50%;width:120px;height:120px;position:absolute;inset-inline-end:-45px}.px-benefit:hover{border-color:#2367db55;transform:translateY(-10px);box-shadow:0 22px 45px #153e6e16}.benefit-2,.benefit-4{background:var(--px-navy);color:#fff;border-color:#0000;transform:translateY(24px)}.benefit-2:hover,.benefit-4:hover{transform:translateY(14px)}.benefit-2 p,.benefit-4 p{color:#aabbd2}.px-benefit-icon{width:46px;height:46px;color:var(--px-blue);background:#eaf2ff;border-radius:14px;place-items:center;display:grid}.benefit-2 .px-benefit-icon,.benefit-4 .px-benefit-icon{color:var(--px-yellow);background:#ffffff16}.px-benefit small{color:#9cafc7;margin-top:28px;font-size:11px;display:block}.px-benefit h3{margin:8px 0;font-family:Almarai,sans-serif;font-size:18px}.px-benefit p{min-height:76px;color:var(--px-muted);font-size:13px;line-height:1.8}.px-benefit a{color:var(--px-blue);gap:7px;font-size:12px;font-weight:800;text-decoration:none;display:inline-flex}.px-paths{background:#eaf3ff;position:relative}.px-paths:before{content:"PHYSICS";top:26px;color:#fff;opacity:.6;pointer-events:none;font:900 170px/1 Almarai,sans-serif;position:absolute;inset-inline-end:-20px}.px-path-grid{z-index:1;grid-template-columns:repeat(3,1fr);gap:18px;display:grid;position:relative}.px-path{text-align:start;min-height:295px;color:var(--px-ink);cursor:pointer;background:#fff;border:1px solid #0000;border-radius:20px;padding:30px;transition:all .35s;position:relative;overflow:hidden;box-shadow:0 15px 35px #1646850b}.px-path:hover{transform:translateY(-10px)rotate(-1deg);box-shadow:0 25px 50px #16468520}.path-2{background:var(--px-blue);color:#fff}.path-3{background:var(--px-yellow);color:#182033}.px-path-number{color:#9eabc0;font:800 14px Almarai,sans-serif;display:block}.path-2 .px-path-number{color:#b9d2ff}.px-path h3{margin:50px 0 7px;font:800 26px Almarai,sans-serif}.px-path strong{font-size:15px}.px-path p{color:#72829a;margin-top:20px;font-size:13px}.path-2 p{color:#d8e6ff}.path-3 p{color:#6e5b26}.px-path-arrow{bottom:25px;font-size:25px;position:absolute;inset-inline-end:27px}.px-path-orbit{top:-52px;border:1px solid #2367db3d;border-radius:50%;width:150px;height:150px;animation:15s linear infinite spin-x;position:absolute;inset-inline-end:-33px}.path-2 .px-path-orbit{border-color:#ffffff42}.path-3 .px-path-orbit{border-color:#8d6a0744}.px-challenge{background:#fff;padding:100px 0}.px-challenge-card{color:#fff;background:linear-gradient(120deg,#071a35,#123a76);border-radius:30px;grid-template-columns:.9fr 1.1fr;gap:60px;min-height:420px;padding:65px 75px;display:grid;position:relative;overflow:hidden}.px-challenge-card:before{content:"";top:-220px;border:1px solid #ffffff1c;border-radius:50%;width:500px;height:500px;position:absolute;inset-inline-end:-80px;box-shadow:0 0 0 50px #ffffff06,0 0 0 100px #ffffff04}.px-challenge-copy{z-index:2;position:relative}.px-challenge-copy h2{margin:18px 0;font:800 clamp(32px,4vw,54px)/1.25 Almarai,sans-serif}.px-challenge-copy p{color:#b4c5df;max-width:390px;line-height:1.9}.px-dark-button{color:#17243a;background:var(--px-yellow);border-radius:12px;align-items:center;gap:10px;margin-top:24px;padding:14px 20px;display:inline-flex}.px-scoreboard{z-index:2;-webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px);background:#ffffff0b;border:1px solid #ffffff20;border-radius:20px;align-self:center;padding:26px;position:relative}.score-orbit{width:100px;height:100px;color:var(--px-yellow);border:1px dashed #ffc83d99;border-radius:50%;place-items:center;margin:0 auto 25px;font-size:30px;animation:14s linear infinite spin-x;display:grid}.score-orbit span{animation:14s linear infinite reverse spin-x}.score-row{color:#fff;border-top:1px solid #ffffff18;grid-template-columns:35px 1fr auto;align-items:center;gap:10px;padding:15px 0;font-size:13px;display:grid}.score-row b{color:var(--px-yellow)}.score-row strong{font-size:12px}.score-row.muted{color:#aabbd2}.px-about{padding:120px 0}.px-about-grid{grid-template-columns:.9fr 1.1fr;align-items:center;gap:85px;display:grid}.px-about-photo{aspect-ratio:4/5;width:min(100%,400px);margin:auto;position:relative}.px-about-photo:before{content:"";border:2px solid var(--px-yellow);border-radius:25px;position:absolute;inset:-18px 22px 18px -18px;transform:rotate(-6deg)}.px-about-photo img{object-fit:cover;border-radius:24px;width:100%;height:100%;position:relative;box-shadow:0 25px 55px #143b7130}.px-about-photo>span{z-index:2;bottom:25px;color:#fff;background:var(--px-blue);border-radius:12px;padding:14px 20px;font-size:12px;position:absolute;inset-inline-end:-30px;box-shadow:0 10px 25px #2367db40}.px-about-photo b{font-size:16px}.px-about-copy h2{margin:18px 0;font:800 clamp(32px,4vw,53px)/1.3 Almarai,sans-serif}.px-about-copy p{max-width:540px;color:var(--px-muted);font-size:16px;line-height:2}.px-signature{color:var(--px-ink);align-items:center;gap:15px;margin-top:30px;font:800 22px Almarai,sans-serif;display:flex}.px-signature span{color:var(--px-muted);border-inline-start:1px solid var(--px-line);padding-inline-start:15px;font:400 12px Tajawal,sans-serif}.px-footer{color:#dce7f5;background:#06162d;padding:65px 0 22px}.px-footer-top{border-bottom:1px solid #ffffff16;grid-template-columns:1fr 1fr 1fr;gap:40px;padding-bottom:50px;display:grid}.px-footer .px-logo{color:#fff}.px-footer .px-logo small{color:#8ca1bd}.px-footer p{color:#8ca1bd;margin-top:20px;font-size:13px}.px-footer-links{flex-direction:column;gap:12px;display:flex}.px-footer-links a,.px-footer-links button{color:#b8c7dc;cursor:pointer;background:0 0;border:0;width:max-content;padding:0;font:700 13px Tajawal,sans-serif;text-decoration:none}.px-footer-links a:hover,.px-footer-links button:hover{color:var(--px-yellow)}.px-footer-contact span{color:#8ca1bd;font-size:13px;display:block}.px-footer-contact a{color:var(--px-yellow);margin-top:10px;font-weight:800;text-decoration:none;display:inline-block}.px-footer-bottom{color:#7185a2;justify-content:space-between;gap:20px;padding-top:20px;font-size:11px;display:flex}[data-reveal]{opacity:0;transition:opacity .8s,transform .8s cubic-bezier(.22,.61,.36,1);transform:translateY(28px)}.is-visible{opacity:1;transform:none}@keyframes spin-x{to{transform:rotate(360deg)}}@keyframes spin-y{to{transform:rotate(-360deg)}}@keyframes dot-float{0%,to{transform:translate(0)}50%{transform:translate(15px,-18px)}}@keyframes photo-breathe{0%,to{border-radius:46% 54% 52% 48%;transform:rotate(-2deg)}50%{border-radius:54% 46% 45% 55%;transform:rotate(2deg)}}@keyframes chip-float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes grid-pulse{0%,to{opacity:.35}50%{opacity:.7}}@keyframes scroll-line{0%,to{transform-origin:top;transform:scaleY(.4)}50%{transform-origin:top;transform:scaleY(1)}}@media (width<=850px){.px-nav-links{top:78px;background:#fff;border-radius:15px;flex-direction:column;align-items:stretch;gap:0;padding:15px;display:none;position:fixed;inset-inline:24px;box-shadow:0 15px 35px #143b7122}.px-nav-links.open{display:flex}.px-nav-links a{padding:12px}.px-menu{margin-inline-start:8px;display:block}.px-nav-actions{margin-inline-start:auto}.px-login{display:none}.px-hero-grid,.px-about-grid{grid-template-columns:1fr}.px-hero{padding-top:125px}.px-hero-copy{text-align:center}.px-hero-copy>p{margin-inline:auto}.px-hero-actions,.px-proof{justify-content:center}.px-hero-art{min-height:430px}.px-benefit-grid{grid-template-columns:repeat(2,1fr)}.px-challenge-card{grid-template-columns:1fr;padding:45px 35px}.px-footer-top{grid-template-columns:1fr 1fr}.px-footer-contact{grid-column:1/-1}}@media (width<=560px){.px-container,.px-nav{width:calc(100% - 30px)}.px-nav{height:74px}.px-nav .px-logo small{display:none}.px-start{padding:11px 12px;font-size:12px}.px-hero{min-height:auto;padding:115px 0 70px}.px-hero h1{font-size:39px}.px-hero-copy>p{font-size:15px}.px-hero-actions{flex-direction:column;align-items:stretch}.px-primary,.px-watch{justify-content:center}.px-proof{gap:17px}.px-proof b{font-size:18px}.px-proof span{font-size:10px}.px-hero-art{min-height:350px}.px-visual{width:100%}.px-section{padding:80px 0}.px-section-head h2{font-size:31px}.px-benefit-grid,.px-path-grid{grid-template-columns:1fr}.benefit-2,.benefit-4{transform:none}.benefit-2:hover,.benefit-4:hover{transform:translateY(-10px)}.px-path{min-height:250px}.px-challenge{padding:70px 0}.px-challenge-card{padding:35px 22px}.px-challenge-copy h2{font-size:35px}.px-about{padding:80px 0}.px-about-grid{gap:50px}.px-about-photo{width:78%}.px-footer-top{grid-template-columns:1fr;gap:30px}.px-footer-contact{grid-column:auto}.px-footer-bottom{flex-direction:column;gap:8px}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.001ms!important;animation-duration:.001ms!important}[data-reveal]{opacity:1;transform:none}}.auth-v2{background:linear-gradient(135deg,#edf5ff,#f8fbff)}.auth-v2 .auth{background:0 0;min-height:calc(100vh - 100px);padding:130px 0 70px}.auth-v2 .auth-in{background:#fff;border-radius:28px;grid-template-columns:1.08fr .92fr;align-items:stretch;gap:0;width:min(1120px,100% - 48px);display:grid;overflow:hidden;box-shadow:0 25px 70px #143b7120}.auth-v2 .auth-panel{order:2;padding:48px clamp(28px,5vw,65px)}.auth-v2 .auth-form{max-width:560px;margin:auto}.auth-v2 .auth-logo{background:var(--px-blue);color:#fff;border-radius:15px;place-items:center;width:48px;height:48px;display:grid;box-shadow:0 10px 22px #2367db38}.auth-v2 .auth-logo .brand-mark{width:auto;height:auto;box-shadow:none;background:0 0}.auth-v2 .auth-form h1{color:var(--px-ink);margin:18px 0 8px;font:800 clamp(27px,3vw,39px)/1.3 Almarai,sans-serif}.auth-v2 .auth-form>p{color:var(--px-muted);line-height:1.8}.auth-v2 .auth-steps{color:var(--px-blue);background:#f4f8ff;border-radius:12px;margin-bottom:20px;padding:12px 15px;font-size:12px}.auth-v2 .auth-steps-top{justify-content:space-between;font-weight:800;display:flex}.auth-v2 .auth-steps-track{background:#dfeaf8;border-radius:99px;height:5px;margin-top:9px;overflow:hidden}.auth-v2 .auth-steps-track i{background:var(--px-yellow);height:100%;transition:all .3s;display:block}.auth-v2 .auth-rows{gap:13px;margin-top:24px}.auth-v2 .field{min-height:55px;color:var(--px-blue);background:#fbfdff;border:1px solid #dce7f5;border-radius:12px}.auth-v2 .field:focus-within{border-color:var(--px-blue);box-shadow:0 0 0 4px #2367db12}.auth-v2 .field input,.auth-v2 .field select,.auth-v2 .field textarea{color:var(--px-ink)}.auth-v2 .field input::placeholder{color:#96a4b8}.auth-v2 .btn-brand{background:var(--px-blue);color:#fff;border-radius:12px}.auth-v2 .auth-switch{color:var(--px-muted)}.auth-v2 .link-btn{color:var(--px-blue)}.auth-v2 .auth-art{background:linear-gradient(145deg,#071a35,#1752ab);align-items:flex-end;min-height:600px;padding:38px;display:flex;position:relative;overflow:hidden}.auth-v2 .auth-art:before{content:"F = ma";top:12%;color:#fff2;font:800 55px Almarai,sans-serif;position:absolute;inset-inline-start:10%;transform:rotate(-10deg)}.auth-v2 .auth-art:after{content:"E = mc²";top:47%;color:#ffc83d55;font:800 25px Almarai,sans-serif;position:absolute;inset-inline-end:8%;transform:rotate(8deg)}.auth-v2 .auth-art img{object-fit:cover;opacity:.52;mix-blend-mode:screen;width:100%;height:100%;position:absolute;inset:0}.auth-v2 .auth-art-copy{z-index:2;color:#fff;max-width:370px;position:relative}.auth-v2 .auth-art-copy h2{font:800 clamp(28px,3vw,45px)/1.25 Almarai,sans-serif}.auth-v2 .auth-art-copy p{color:#c4d7f2;line-height:1.8}.auth-v2 .auth-art-steps{gap:11px;margin-top:24px;display:grid}.auth-v2 .auth-art-steps div{color:#e7f0ff;align-items:center;gap:11px;font-size:13px;display:flex}.auth-v2 .auth-art-steps b{color:#17243a;background:var(--px-yellow);border-radius:50%;place-items:center;width:28px;height:28px;display:grid}.auth-v2 .alert{color:#9e341f;background:#fff0eb;border-color:#ffd2c5}@media (width<=760px){.auth-v2 .auth-in{grid-template-columns:1fr;width:calc(100% - 30px)}.auth-v2 .auth-art{order:1;min-height:310px;padding:28px}.auth-v2 .auth-panel{order:2;padding:35px 20px}.auth-v2 .auth-art-copy{max-width:290px}.auth-v2 .auth-art-copy h2{font-size:29px}.auth-v2 .auth-art-steps{gap:6px;margin-top:12px}.auth-v2 .auth-art-steps div{font-size:11px}.auth-v2 .auth{padding-top:104px}}.px-background{z-index:0;pointer-events:none;opacity:.95;position:absolute;inset:0;overflow:hidden}.px-bg-mesh{background-image:linear-gradient(#2367db12 1px,#0000 1px),linear-gradient(90deg,#2367db12 1px,#0000 1px);background-size:55px 55px;animation:18s linear infinite mesh-drift;position:absolute;inset:-20%;transform:perspective(600px)rotateX(58deg)translateY(20%);-webkit-mask-image:radial-gradient(at 50% 45%,#000 0%,#0000 72%);mask-image:radial-gradient(at 50% 45%,#000 0%,#0000 72%)}.px-bg-wave{border:1px solid #2367db20;border-radius:50%;width:120%;height:260px;animation:13s ease-in-out infinite wave-drift;position:absolute;inset-inline-start:-10%;transform:rotate(-8deg)}.px-bg-wave:before,.px-bg-wave:after{content:"";border:1px solid #52c7ff20;border-radius:50%;position:absolute;inset:18px}.px-bg-wave:after{border-color:#ffc83d22;inset:43px}.wave-a{top:10%}.wave-b{animation-delay:-5s;bottom:-10%;transform:rotate(13deg)}.px-bg-constellation{position:absolute;inset:0}.px-bg-constellation i{background:var(--px-blue);width:4px;height:4px;left:calc((var(--i) * 37) % 100 * 1%);top:calc((var(--i) * 61) % 100 * 1%);animation:4s ease-in-out infinite star-twinkle;animation-delay:calc(var(--i) * -.32s);border-radius:50%;position:absolute;box-shadow:0 0 14px #2367db99}.px-bg-constellation i:nth-child(3n){background:var(--px-yellow)}.px-bg-constellation i:nth-child(4n){width:7px;height:7px}.px-bg-cross{color:#2367db42;font:800 26px Almarai,sans-serif;animation:8s ease-in-out infinite cross-float;position:absolute}.cross-a{top:24%;inset-inline-start:7%}.cross-b{bottom:21%;color:#ffb90066;animation-delay:-3s;inset-inline-end:8%}.px-hero-grid,.px-scroll-hint{z-index:2;position:relative}@keyframes mesh-drift{0%{background-position:0 0;transform:perspective(600px)rotateX(58deg)translateY(20%)translate(0)}to{background-position:55px 55px;transform:perspective(600px)rotateX(58deg)translateY(20%)translate(-55px)}}@keyframes wave-drift{0%,to{transform:rotate(-8deg)translate(-3%)scale(1)}50%{transform:rotate(-4deg)translate(3%)scale(1.08)}}@keyframes star-twinkle{0%,to{opacity:.18;transform:scale(.7)}50%{opacity:.9;transform:scale(1.45)}}@keyframes cross-float{0%,to{transform:translate(0)rotate(0)}50%{transform:translate(18px,-20px)rotate(18deg)}}.fixed-auth .auth-in{grid-template-columns:1.06fr .94fr}.fixed-auth-form{max-width:620px!important}.fixed-form-badge{color:#fff;background:var(--px-blue);border-radius:15px;place-items:center;width:48px;height:48px;display:grid;box-shadow:0 10px 22px #2367db38}.fixed-progress{color:var(--px-blue);justify-content:space-between;gap:15px;margin-top:24px;font-size:12px;font-weight:800;display:flex}.fixed-progress b{color:#9baabe;font-weight:700}.fixed-auth-form h1{margin-top:15px!important}.fixed-form-grid{grid-template-columns:1fr 1fr;gap:12px;margin-top:24px;display:grid}.fixed-field-wrap{min-width:0}.fixed-field{min-height:54px;color:var(--px-blue);background:#fbfdff;border:1px solid #dce7f5;border-radius:12px;align-items:center;gap:9px;padding:0 13px;transition:all .2s;display:flex}.fixed-field:focus-within{border-color:var(--px-blue);box-shadow:0 0 0 4px #2367db12}.fixed-field>span{clip:rect(0,0,0,0);width:1px;height:1px;position:absolute;overflow:hidden}.fixed-field input,.fixed-field select{width:100%;min-width:0;color:var(--px-ink);background:0 0;border:0;outline:0;font:600 13px Tajawal,sans-serif}.fixed-field input::placeholder{color:#99a8bc}.fixed-field select{cursor:pointer}.fixed-field select:disabled{color:#9caabd}.fixed-field.has-error{border-color:#ef8069}.fixed-error{color:#d04c35;padding:4px 5px 0;font-size:10px;display:block}.fixed-message{color:#9e341f;background:#fff0eb;border-radius:10px;align-items:center;gap:8px;margin-top:14px;padding:12px;font-size:12px;line-height:1.6;display:flex}.fixed-submit{color:#fff;background:var(--px-blue);cursor:pointer;border:0;border-radius:12px;justify-content:center;align-items:center;gap:10px;width:100%;margin-top:18px;padding:15px;font:800 14px Tajawal,sans-serif;transition:all .25s;display:flex;box-shadow:0 12px 25px #2367db35}.fixed-submit:hover:not(:disabled){background:#164db9;transform:translateY(-2px)}.fixed-submit:disabled{opacity:.6;cursor:wait}.fixed-switch{text-align:center;margin-top:16px!important;font-size:12px!important}.fixed-switch button{color:var(--px-blue);cursor:pointer;background:0 0;border:0;padding:0;font:800 12px Tajawal,sans-serif}.fixed-remember{color:var(--px-muted);grid-column:1/-1;font-size:12px}.fixed-remember input{accent-color:var(--px-blue)}.fixed-auth-art{background:linear-gradient(145deg,#06162d,#124a9d)!important}.fixed-auth-art img{opacity:.42!important}.fixed-auth-art:before{content:"v = Δx / Δt";z-index:2;top:10%;color:#fff3;font:800 35px Almarai,sans-serif;position:absolute;inset-inline-start:8%;transform:rotate(-10deg)}.fixed-art-orbit{z-index:1;top:9%;border:1px solid #52c7ff55;border-radius:50%;width:420px;height:420px;animation:22s linear infinite spin-x;position:absolute;inset-inline-end:-180px;box-shadow:0 0 0 45px #ffffff08,0 0 0 90px #ffffff05}.fixed-auth-art .auth-art-copy{max-width:390px}.fixed-auth-art .px-kicker{color:#ffc83d}.fixed-auth-art .auth-art-steps b{width:34px;height:34px}.fixed-auth-art .auth-art-steps span{font-size:13px}@media (width<=760px){.fixed-form-grid{grid-template-columns:1fr}.fixed-remember{grid-column:auto}.fixed-auth .auth-in{grid-template-columns:1fr}.fixed-auth-art{min-height:330px}.px-bg-mesh{background-size:34px 34px}}@media (width<=560px){.px-container,.px-nav{width:calc(100% - 30px)}.px-hero{min-height:800px}.px-hero-copy{padding:0}.px-hero h1{font-size:49px}.px-hero-art{min-height:330px}.px-benefit-grid{grid-template-columns:1fr}.px-benefit,.px-benefit:last-child{border-inline:0;border-bottom:1px solid #79404d}.px-challenge-card{padding:42px 25px}.px-path-grid{gap:1px}}@media (width<=1100px){.px-container,.px-nav{width:calc(100% - 40px)}.px-nav{gap:20px}.px-nav-links{gap:18px}.px-hero-grid{gap:28px}.px-hero h1{font-size:clamp(42px,6vw,68px)}.px-benefit{padding-inline:18px}.px-challenge-card{padding-inline:48px}}@media (width<=880px){.px-nav{width:calc(100% - 32px)}.px-nav-links{top:76px;border:1px solid var(--px-line);background:var(--px-paper);border-radius:14px;flex-direction:column;align-items:stretch;gap:0;padding:10px;display:none;position:fixed;inset-inline:16px;box-shadow:0 18px 40px #143b7125}.px-nav-links.open{display:flex}.px-nav-links a{padding:13px 14px}.px-menu{margin-inline-start:8px;display:block}.px-nav-actions{margin-inline-start:auto}.px-login{display:none}.px-hero{min-height:auto;padding-top:130px}.px-hero-grid{grid-template-columns:1fr}.px-hero-copy{text-align:center;order:1;padding:0}.px-hero-copy>p{margin-inline:auto}.px-hero-actions,.px-proof{justify-content:center}.px-hero-art{order:2;min-height:410px}.px-visual{width:min(88vw,510px)}.px-benefit-grid{grid-template-columns:repeat(2,1fr)}.px-benefit,.px-benefit:last-child{border-inline:0}.px-benefit:nth-child(2),.px-benefit:nth-child(4){border-inline-start:1px solid var(--px-line)}.px-benefit:nth-child(n+3){border-top:1px solid var(--px-line)}.benefit-2,.benefit-4{transform:none}.benefit-2:hover,.benefit-4:hover{transform:translateY(-8px)}.px-path-grid{grid-template-columns:1fr;max-width:620px;margin-inline:auto}.px-path{min-height:230px}.px-challenge-card{grid-template-columns:1fr;gap:35px}.px-about-grid{grid-template-columns:1fr;gap:55px}.px-about-photo{width:min(75vw,400px)}.auth-v2 .auth-in{width:calc(100% - 32px)}.auth-v2 .auth-panel{padding:40px 28px}.auth-v2 .auth-art{min-height:420px}}@media (width<=560px){.px-container,.px-nav{width:calc(100% - 28px)}.px-nav{height:74px}.px-logo small{display:none}.px-logo-mark{width:38px;height:38px}.px-start{padding:11px 12px;font-size:12px}.px-hero{padding:108px 0 65px}.px-hero h1{font-size:clamp(40px,12vw,54px)}.px-hero-copy>p{font-size:14px;line-height:1.9}.px-hero-actions{flex-direction:column;align-items:stretch;gap:14px}.px-primary,.px-watch{justify-content:center}.px-proof{gap:14px}.px-proof b{font-size:18px}.px-proof span{font-size:10px}.px-hero-art{min-height:330px}.px-chip{padding:8px 10px;font-size:10px}.px-equation{padding:6px 8px;font-size:10px}.px-section{padding:78px 0}.px-section-head{margin-bottom:35px}.px-section-head h2{font-size:31px}.px-benefit-grid{grid-template-columns:1fr}.px-benefit,.px-benefit:nth-child(2),.px-benefit:nth-child(4){border-inline:0;border-bottom:1px solid var(--px-line);min-height:240px;border-top:0!important}.px-benefit:last-child{border-bottom:0}.px-path{min-height:220px;padding:24px}.px-path h3{margin-top:35px;font-size:23px}.px-challenge{padding:68px 0}.px-challenge-card{min-height:0;padding:34px 22px}.px-challenge-copy h2{font-size:36px}.px-scoreboard{padding:19px}.px-about{padding:78px 0}.px-about-photo{width:78%}.px-about-photo>span{inset-inline-end:-18px}.px-about-copy h2{font-size:34px}.px-footer-top{grid-template-columns:1fr;gap:26px}.px-footer-bottom{flex-direction:column;gap:8px}.auth-v2 .auth{padding-top:100px}.auth-v2 .auth-in{width:calc(100% - 24px)}.auth-v2 .auth-art{min-height:285px;padding:25px 20px}.auth-v2 .auth-panel{padding:30px 16px}.fixed-form-grid{grid-template-columns:1fr}.fixed-remember{grid-column:auto}.fixed-auth-art .auth-art-copy h2{font-size:30px}}.px-login{border:1px solid var(--px-blue);min-height:44px;color:var(--px-ink);white-space:nowrap;background:0 0;border-radius:12px;justify-content:center;align-items:center;display:inline-flex}@media (width<=880px){.px-nav-actions{gap:6px}.px-login{padding:10px 12px;font-size:12px;display:inline-flex}.px-start{white-space:nowrap;padding:10px 12px;font-size:12px}.px-start .ic{display:none}}@media (width<=560px){.px-nav-actions{gap:4px}.px-login,.px-start{border-radius:10px;min-height:40px;padding:9px 8px;font-size:10px}.px-logo{gap:5px}.px-logo b{font-size:15px}.px-logo-mark{width:34px;height:34px}.px-menu{width:38px;height:38px;margin-inline-start:3px}}
