:root{font-family:Inter,"Segoe UI",Arial,sans-serif;color:#172642;background:#f5f7fc;font-synthesis:none}*{box-sizing:border-box}body{margin:0}button{font:inherit;cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #53b9a4;outline-offset:3px}.shell{display:flex;min-height:100vh}.sidebar{width:258px;background:#0e203e;color:#c0cce0;display:flex;flex-direction:column;flex-shrink:0;padding:30px 16px;min-height:100vh}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:white;padding:0 12px 52px;font-size:20px;letter-spacing:-.6px;font-weight:850}.brand strong{color:#71dec1}.brand small{display:block;color:#7f91af;letter-spacing:2px;font-size:9px;margin-top:5px;font-weight:650}.brand-mark{width:39px;height:39px;background:#29b69a;border-radius:11px;display:grid;place-items:center;font-size:25px;color:#09243a}.nav-label{padding:0 16px 15px;color:#7891b3;font-size:10px;font-weight:750;letter-spacing:1.6px}nav{display:flex;flex-direction:column;gap:7px}.nav{color:#c4cee1;width:100%;background:transparent;border:0;padding:13px 17px;text-align:left;border-radius:10px;display:flex;gap:15px;align-items:center;font-size:14px}.nav.active,.nav:hover{background:#233b5e;color:white}.nav.active{box-shadow:inset 3px 0 #49ceb1}.side-bottom{margin-top:auto;padding:20px 16px;background:#192f50;border-radius:14px}.side-title{font-weight:700;color:#fff;font-size:13px}.side-bottom p{font-size:12px;line-height:1.65;color:#acbdd5}.mini-status{color:#79dec1;font-size:11px}.main-wrap{flex:1;min-width:0;display:flex;flex-direction:column}.topbar{height:75px;background:#fff;border-bottom:1px solid #e6ebf2;display:flex;align-items:center;justify-content:space-between;padding:0 45px;color:#78869d;font-size:13px}.top-pill{background:#eaf8f3;color:#168469;padding:9px 14px;border-radius:999px;font-weight:700}.mobile-menu{display:none;background:transparent;border:0;color:#142949;font-size:25px}main{max-width:1320px;width:100%;margin:auto;padding:42px 45px 70px;flex:1}.view{display:none}.view.active{display:block}.eyebrow{color:#199c84;font-weight:800;letter-spacing:2px;font-size:11px;margin-bottom:15px}.hero{background:#142a4d;border-radius:23px;display:grid;grid-template-columns:1.35fr 1fr;min-height:332px;overflow:hidden;color:white;box-shadow:0 20px 45px #0f305015}.hero>div:first-child{padding:45px}.hero-kicker{color:#74d9be;font-size:11px;font-weight:750;letter-spacing:2px}.hero h1{font-size:clamp(36px,4vw,58px);line-height:1.06;margin:17px 0 20px;letter-spacing:-2.5px}.hero h1 em{font-style:normal;color:#7ce4c6}.hero p{max-width:510px;color:#bdcbe0;line-height:1.75;margin-bottom:27px;font-size:14px}.primary{border:0;background:#29b99b;color:#062b30;font-weight:800;border-radius:9px;padding:13px 19px}.primary:hover{background:#6bdfc4}.hero-art{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;background:radial-gradient(circle at 60% 45%,#245779 0%,#173758 50%,#142a4d 77%);overflow:hidden}.hero-big{font-weight:900;font-size:150px;letter-spacing:-12px;color:#85e6d0;text-shadow:0 15px 40px #0003;z-index:1}.hero-big span{font-size:55px;vertical-align:top;letter-spacing:0;color:#fff}.orb{position:absolute;border:1px solid #79d7c453;border-radius:50%}.orb-1{width:280px;height:280px}.orb-2{width:390px;height:390px}.art-tag{font-size:10px;letter-spacing:3px;color:#9ecbca;z-index:1}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:24px 0 40px}.stat{background:white;border:1px solid #e5ebf1;border-radius:16px;padding:22px 25px;display:flex;flex-direction:column;gap:10px}.stat span{font-size:10px;color:#8a97a8;font-weight:750;letter-spacing:1.5px}.stat strong{font-size:27px;letter-spacing:-1px}.stat small{font-size:12px;color:#8190a4}.section-head{display:flex;justify-content:space-between;align-items:end}.section-head h2{margin:0 0 20px;font-size:25px}.levels{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.level{border:1px solid #e3e9f1;background:#fff;border-radius:14px;padding:19px;min-height:123px;display:flex;flex-direction:column;gap:9px;text-align:left}.level strong{font-size:23px}.level span{font-size:13px;color:#8190a4}.level b{margin-top:auto;font-size:10px;font-weight:750;color:#7d8ca0}.level.available{border-color:#67cbb8;background:#f3fdfa}.level.available b{color:#1b967c}.page-title{font-size:36px;letter-spacing:-1.5px;margin:0 0 9px}.lead{color:#74829a;line-height:1.7;margin:0 0 28px}.lesson-catalog{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.lesson-card,.lesson-detail,.tutor-panel,.progress-card,.progress-entries{background:white;border:1px solid #e4eaf2;border-radius:17px;padding:25px}.lesson-card{display:flex;flex-direction:column;gap:13px}.lesson-card .tag{font-size:11px;color:#149b83;font-weight:800;letter-spacing:1.1px}.lesson-card h2{font-size:21px;letter-spacing:-.5px;margin:0}.lesson-card p{font-size:13px;line-height:1.7;color:#78879b;margin:0}.lesson-card button{align-self:flex-start}.secondary{background:#e9f0f6;color:#203858;border:0;border-radius:8px;padding:12px 17px;font-weight:750}.secondary:hover{background:#dae6f2}.lesson-detail{margin-top:22px}.back{border:0;background:none;color:#258b7b;font-weight:750;padding:0 0 15px}.lesson-detail h2{font-size:25px}.lesson-detail h3{margin-top:27px;font-size:17px}.lesson-detail p{line-height:1.7}.example{padding:13px 15px;background:#edf7f5;border-left:3px solid #2caf92;color:#24564e;margin:8px 0;border-radius:0 8px 8px 0}.question{border-top:1px solid #e7edf4;margin-top:18px;padding-top:18px}.question strong{display:block;margin-bottom:12px}.option{display:flex;align-items:center;gap:11px;padding:11px 13px;border:1px solid #e1e7ee;border-radius:10px;margin-bottom:8px;cursor:pointer}.option:has(input:checked){border-color:#24b397;background:#f1fcf8}.option input{accent-color:#23ae93}.result-box{margin-top:22px;border:1px solid #aadbcf;background:#f1faf7;padding:20px;border-radius:12px}.result-box strong{font-size:23px;color:#08745e}.result-row{margin:12px 0;font-size:13px;line-height:1.7;border-top:1px solid #d9eae5;padding-top:10px}.error-txt{color:#ad3f36}.good-txt{color:#08745e}.tutor-panel{text-align:center;padding:60px 35px;max-width:750px;margin:0 auto}.tutor-avatar{border-radius:50%;width:70px;height:70px;background:#e7f7f1;color:#188870;font-size:34px;display:grid;place-items:center;margin:0 auto 20px}.tutor-panel p{color:#74829a;line-height:1.9}.notice{background:#f2f5fb;border-radius:10px;padding:15px;color:#54647a;margin:24px 0;font-size:13px;line-height:1.7}.progress-card{display:flex;align-items:center;gap:35px}.circle-score{height:125px;width:125px;border:9px solid #40bca1;border-radius:50%;flex-shrink:0;display:grid;place-items:center;font-size:28px;font-weight:800}.progress-card p{color:#718198}.progress-entries{margin-top:20px;line-height:2.5}.progress-line{display:flex;justify-content:space-between;border-bottom:1px solid #eff2f6;gap:15px}footer{padding:24px 45px;color:#8997a7;font-size:11px;display:flex;justify-content:space-between;gap:15px;border-top:1px solid #e5eaf2}footer span{text-align:right}@media(max-width:1050px){.sidebar{width:218px}.topbar{padding:0 25px}main{padding:30px 25px}.hero>div:first-child{padding:33px}.levels{grid-template-columns:repeat(3,1fr)}}@media(max-width:780px){.sidebar{position:fixed;z-index:10;left:-270px;top:0;height:100vh;transition:left .2s;width:255px}.sidebar.open{left:0}.mobile-menu{display:block}.topbar{height:64px}.topbar>span:first-of-type{display:none}.hero{grid-template-columns:1fr}.hero-art{display:none}.stat-grid,.levels{grid-template-columns:repeat(2,1fr)}.lesson-catalog{grid-template-columns:1fr}footer{padding:20px;display:block}footer span{display:block;text-align:left;margin-top:6px}}@media(max-width:480px){main{padding:23px 16px 45px}.hero>div:first-child{padding:27px}.hero h1{font-size:39px}.stat-grid{grid-template-columns:1fr;gap:10px}.levels{grid-template-columns:repeat(2,1fr)}.progress-card{flex-direction:column;text-align:center}.page-title{font-size:29px}.topbar{padding:0 16px}}
