:root{--navy:#104b7b;--orange:#f47721;--green:#70bd43;--cyan:#16b9d5;--ink:#101c30;--line:#e4eaf0;--primary:#104b7b;--bs-primary:#104b7b}*{box-sizing:border-box}body{font-family:Inter,Arial,sans-serif;color:var(--ink);background:#fff;margin:0}a{color:var(--navy)}button,a,input,select,textarea{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}.skip-link{position:fixed;left:-999px}.skip-link:focus{left:10px;top:10px;z-index:99999;background:white;padding:12px}.original-brand{display:block;position:relative;background:#fff;overflow:hidden;width:216px;height:64px;border-radius:6px;flex-shrink:0}.original-brand img{position:absolute;width:380px!important;max-width:none!important;height:auto!important;top:-65px;left:-76px}.concept-sidebar{position:fixed;inset:0 auto 0 0;width:235px;overflow-y:auto;background:#19262e;padding:22px 15px;z-index:50}.concept-sidebar .original-brand{width:205px}.side-caption{color:#9babb9;font-size:10px;text-transform:uppercase;letter-spacing:1.6px;padding:24px 12px 10px}.concept-sidebar nav a{display:flex;gap:13px;align-items:center;text-decoration:none;color:#dce4e8;padding:11px 13px;font-size:13px;border-radius:5px;margin:3px 0}.concept-sidebar nav a i{width:18px}.concept-sidebar nav a:hover,.concept-sidebar nav a.selected{background:#334650;color:white}.concept-main{margin-left:235px}.concept-topbar{height:74px;background:#19262e;color:white;display:flex;align-items:center;justify-content:space-between;padding:0 30px;gap:20px}.workspace-search{font-size:13px;background:#314049;padding:12px 20px;border-radius:5px;color:#d5dfe5}.top-account{display:flex;align-items:center;gap:12px;font-size:12px}.top-account small{display:block;color:#b1c2cc;font-size:10px}.initial-avatar{display:grid;place-items:center;border-radius:50%;background:#e6f6fd;color:#174e74;width:32px;height:32px;font-weight:bold}#live-bell{color:white;position:relative;margin-right:12px;font-size:18px}#live-bell b{position:absolute;right:-9px;top:-9px;background:var(--orange);font-size:9px;padding:2px 5px;border-radius:20px}#concept-toggle{display:none;color:white;background:none;border:0;font-size:24px}.concept-content{padding:30px!important;margin:0!important;max-width:1600px}.concept-title{font-size:29px;letter-spacing:-1px;font-weight:750;margin-bottom:7px}.concept-subtitle{color:#738091;font-size:14px;margin-bottom:24px}.concept-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}.concept-heading p{margin:0}.btn-primary,.orange-button{background:var(--orange)!important;border-color:var(--orange)!important;color:white!important;border-radius:5px!important;box-shadow:none!important}.btn-outline-primary{color:var(--navy);border-color:#ccdbe8}.concept-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}.concept-stat{padding:20px;display:flex;align-items:center;gap:16px;border:1px solid #e7eff7;border-radius:6px;background:#f1f9fe}.concept-stat:nth-child(2){background:#eff9f1}.concept-stat:nth-child(3){background:#fff9eb}.concept-stat:nth-child(4){background:#fff1f4}.concept-stat i{font-size:28px;color:var(--cyan)}.concept-stat:nth-child(2) i{color:#43b25b}.concept-stat:nth-child(3) i{color:#e9aa16}.concept-stat:nth-child(4) i{color:#eb5371}.concept-stat b{font-size:25px;display:block;line-height:1.2}.concept-stat small{font-size:11px;color:#617180}.concept-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(250px,1fr);gap:22px}.concept-card,.dash-card{border:1px solid var(--line)!important;border-radius:7px!important;background:white!important;box-shadow:none!important;padding:22px;margin-bottom:22px}.concept-card h2{font-size:16px;font-weight:700;margin-bottom:18px}.concept-card table{width:100%;font-size:12px;border-collapse:separate;border-spacing:4px}.concept-card th{font-weight:600;color:#69798b}.concept-card td{padding:9px;background:#f3f7fa;border-radius:3px}.lesson{padding:9px;margin:3px;background:#e4f5df;border-radius:4px;min-width:88px}.concept-card td:nth-child(3) .lesson{background:#fff0e2}.concept-card td:nth-child(4) .lesson{background:#e8edfc}.concept-table{overflow-x:auto}.concept-list{display:flex;gap:13px;padding:14px 0;border-bottom:1px solid #eef1f4}.concept-list p{font-size:12px;color:#788798;margin:3px 0}.concept-list strong{font-size:13px}.concept-list .initial-avatar{flex-shrink:0}.grade-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.grade-row{display:flex;justify-content:space-between;font-size:13px;padding:12px 0;border-bottom:1px solid #eff3f6}.grade-row b{border:1px solid #dce4eb;padding:4px 18px;border-radius:4px;font-weight:500}.billing-banner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px;background:#fff2e5;border:1px solid #ffe2c5;border-radius:6px;font-size:13px}.muted{color:#708092}.onboarding{padding:18px;background:#f8fafb;margin-bottom:20px;border-radius:5px}#original-preloader{position:fixed;inset:0;background:white;z-index:10000;display:flex;align-items:center;justify-content:center;flex-direction:column;pointer-events:none;animation:loaderGone 0s 2s forwards}#original-preloader[hidden]{display:none}#original-preloader img{width:min(500px,85vw)}#original-preloader span{color:var(--navy);font-size:12px}.load-track{width:120px;height:3px;margin:20px;background:linear-gradient(90deg,var(--orange),var(--green),var(--cyan),var(--navy))}@keyframes loaderGone{to{visibility:hidden}}#live-toast:empty{display:none}#live-toast{position:fixed;right:20px;bottom:20px;padding:18px;background:#193a50;color:#fff;border-radius:8px;z-index:100;max-width:320px}.concept-nav{height:100px;display:flex;align-items:center;justify-content:space-between;gap:20px;max-width:1360px;margin:auto;padding:0 40px}.concept-nav nav{display:flex;align-items:center;gap:30px;font-size:13px}.concept-nav a{text-decoration:none}.concept-hero{text-align:center;padding:40px 20px 35px}.concept-hero h1{font-size:clamp(35px,4.5vw,60px);font-weight:800;letter-spacing:-2px;margin-bottom:14px;color:#0e1a30}.concept-hero p{color:#63748a;font-size:17px}.concept-hero .btn{padding:13px 22px;font-size:13px;margin:8px}.concept-carousel{position:relative;margin:0 auto;max-width:1360px;height:380px;overflow:hidden}.concept-carousel img{width:100%;height:100%;object-fit:cover;object-position:center 45%}.concept-carousel img[hidden]{display:none}.carousel-tools{position:absolute;right:25px;bottom:20px;display:flex;gap:8px}.carousel-tools button{border:0;background:white;border-radius:30px;min-width:36px;height:36px;padding:0 12px}.community-links{max-width:1280px;margin:auto;display:grid;grid-template-columns:repeat(3,1fr);gap:30px;padding:30px}.community-links>a{display:flex;align-items:center;gap:18px;text-decoration:none;color:var(--ink)}.community-links i{background:#74bd33;color:white;border-radius:50%;width:52px;height:52px;display:grid;place-items:center;font-size:23px}.community-links>a:nth-child(2) i{background:var(--cyan)}.community-links strong{font-size:14px;display:block}.community-links small{font-size:12px;color:#738397}.public-section{max-width:1250px;margin:auto;padding:65px 30px}.public-section h2{font-size:29px;font-weight:750;letter-spacing:-1px}.public-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}.public-grid article{border:1px solid #e4eaf0;padding:25px;border-radius:8px}.public-grid p{color:#758397;font-size:14px}.public-footer{padding:35px;display:flex;justify-content:space-between;background:#f5f8fa;font-size:13px}.public-footer nav{display:flex;gap:20px}.concept-card label{display:block;font-size:13px;margin-bottom:16px}.concept-card input,.concept-card select,.concept-card textarea{border:1px solid #d8e1e8;border-radius:5px;padding:10px;width:100%;margin-top:5px}.concept-card button{padding:10px 17px;border:0}.concept-card textarea{min-height:110px}@media(max-width:1000px){.concept-sidebar{width:205px}.concept-sidebar .original-brand{width:175px}.concept-sidebar .original-brand img{width:320px!important;left:-65px;top:-55px}.concept-main{margin-left:205px}.concept-stats{grid-template-columns:1fr 1fr}.concept-grid{grid-template-columns:1fr}.concept-nav nav{gap:15px}}@media(max-width:760px){.concept-sidebar{transform:translateX(-100%);width:235px;transition:transform .2s}.concept-sidebar.open{transform:translateX(0);top:74px}.concept-main{margin-left:0}#concept-toggle{display:block}.workspace-search{display:none}.concept-content{padding:20px!important}.concept-topbar{padding:0 20px}.concept-heading{align-items:flex-start}.concept-title{font-size:25px}.concept-stat{padding:15px;gap:10px}.concept-stat b{font-size:22px}.grade-grid{grid-template-columns:1fr}.billing-banner{flex-wrap:wrap}.concept-nav{height:auto;padding:14px 20px;flex-wrap:wrap}.concept-nav nav{flex-wrap:wrap;font-size:12px;gap:14px}.concept-hero{padding-top:28px}.concept-carousel{height:310px}.community-links{grid-template-columns:1fr;padding:25px}.public-grid{grid-template-columns:1fr}.public-footer{flex-wrap:wrap;gap:18px}.public-footer nav{flex-wrap:wrap}.concept-topbar .top-account{font-size:11px}}@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}@media print{.concept-sidebar,.concept-topbar,#original-preloader{display:none!important}.concept-main{margin:0}}
.concept-sidebar .original-brand{width:205px;height:64px}.concept-sidebar .original-brand img{width:345px!important;left:-67px!important;top:-56px!important}.concept-sidebar .original-brand{max-width:100%}.concept-grid{align-items:start}.concept-card{min-width:0}@media(max-width:1000px) and (min-width:761px){.concept-sidebar .original-brand img{width:290px!important;left:-56px!important;top:-45px!important}}