:root{--p:#087f73;--pd:#065f57;--ps:#e7f8f5;--a:#f59e0b;--dark:#102a2e;--text:#33484c;--muted:#718286;--bg:#f4faf8;--white:#fff;--line:#dcebe8;--danger:#c33d45;--success:#158362;--shadow:0 18px 55px rgba(16,42,46,.11);--r:20px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Tahoma,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.75}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}.container{width:min(1160px,calc(100% - 30px));margin:auto}.loading-screen{min-height:100vh;display:grid;place-content:center;text-align:center}.paw{font-size:70px}.topbar{background:var(--dark);color:#eafffb;text-align:center;padding:7px 14px;font-size:12px}.header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:10px;color:var(--dark);font-weight:900}.brand-mark{width:45px;height:45px;display:grid;place-items:center;background:linear-gradient(145deg,var(--p),var(--pd));color:white;border-radius:15px;box-shadow:0 9px 24px rgba(8,127,115,.23)}.brand small{display:block;font-size:10px;color:var(--muted);font-weight:500;margin-top:-5px}.navlinks{display:flex;gap:22px;font-size:14px}.navlinks a:hover{color:var(--p)}.actions{display:flex;gap:9px;align-items:center}.btn{border:0;border-radius:12px;padding:10px 17px;cursor:pointer;font-weight:800;display:inline-flex;align-items:center;justify-content:center;gap:7px;transition:.2s}.btn:hover{transform:translateY(-2px)}.btn-p{background:var(--p);color:white;box-shadow:0 10px 24px rgba(8,127,115,.2)}.btn-p:hover{background:var(--pd)}.btn-light{background:white;color:var(--pd);border:1px solid var(--line)}.btn-dark{background:var(--dark);color:white}.btn-danger{background:#fff0f1;color:var(--danger);border:1px solid #ffd5d8}.btn-sm{padding:7px 11px;font-size:12px}.badge{display:inline-flex;align-items:center;gap:7px;background:var(--ps);color:var(--pd);border:1px solid #c9e9e3;border-radius:999px;padding:6px 12px;font-size:12px;font-weight:800}.hero{padding:82px 0 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1fr;gap:12px}.mock-side{background:var(--dark);color:white;border-radius:15px;padding:10px}.mock-side div{font-size:11px;padding:7px;border-radius:8px;margin-bottom:6px}.mock-side div:first-child{background:rgba(255,255,255,.14)}.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:11px}.mini,.card,.panel,.stat{background:white;border:1px solid var(--line);border-radius:var(--r);box-shadow:0 10px 34px rgba(16,42,46,.05)}.mini{padding:13px}.mini strong{font-size:23px;color:var(--dark)}.mini.wide{grid-column:1/-1}.progress{height:8px;background:#e7efed;border-radius:999px;overflow:hidden;margin-top:10px}.progress span{display:block;height:100%;background:linear-gradient(90deg,var(--p),#3bb6a7)}.section{padding:76px 0}.section-head{max-width:730px;margin:0 auto 38px;text-align:center}.section-head h2{font-size:clamp(29px,4vw,43px);line-height:1.3;color:var(--dark);margin:10px 0}.section-head p{color:var(--muted);margin:0}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{padding:23px}.hover{transition:.22s}.hover:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.icon{width:50px;height:50px;display:grid;place-items:center;background:var(--ps);border-radius:15px;font-size:23px;margin-bottom:15px}.card h3{color:var(--dark);margin:0 0 7px}.card p{color:var(--muted);font-size:14px;margin:0}.dark-section{background:var(--dark);color:white}.dark-section h2,.dark-section p{color:white}.grades{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.grade{padding:22px 10px;text-align:center;border-radius:17px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12)}.grade strong{font-size:23px;display:block}.grade span{font-size:12px;color:#b9d7d2}.subscription{display:grid;grid-template-columns:1fr .82fr;gap:36px;align-items:center;padding:38px;border:1px solid var(--line);border-radius:28px;background:linear-gradient(145deg,#fff,#ecfaf7);box-shadow:var(--shadow)}.subscription h2{font-size:clamp(28px,4vw,42px);color:var(--dark);margin:0 0 9px}.check{list-style:none;padding:0}.check li{margin:9px 0}.check li:before{content:"✓";display:inline-grid;place-items:center;width:22px;height:22px;background:var(--p);color:white;border-radius:50%;margin-left:8px;font-size:12px}.price{padding:27px;border-radius:23px;background:linear-gradient(145deg,var(--p),var(--pd));color:white;text-align:center}.price h3{font-size:31px;margin:8px 0}.price .btn{width:100%;background:white;color:var(--pd)}.footer{background:white;border-top:1px solid var(--line);padding:28px 0}.footer-row{display:flex;justify-content:space-between;gap:18px;color:var(--muted);font-size:13px}.page-hero{padding:48px 0;background:linear-gradient(180deg,#f8fffd,#eef8f6);border-bottom:1px solid var(--line)}.page-hero h1{font-size:clamp(31px,5vw,47px);color:var(--dark);margin:8px 0}.page-hero p{color:var(--muted);margin:0}.form-wrap{width:min(720px,calc(100% - 30px));margin:45px auto;background:white;border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:var(--shadow)}.form-wrap.small{max-width:520px}.form-wrap h1{color:var(--dark);margin:8px 0 3px}.form-wrap>p{color:var(--muted);margin:0 0 20px}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}.field{display:grid;gap:6px;margin-bottom:13px}.field label{font-size:13px;font-weight:800;color:var(--dark)}.field input,.field select,.field textarea,.search{border:1px solid var(--line);border-radius:12px;padding:11px 12px;background:#fbfdfc;outline:none;width:100%}.field input:focus,.field select:focus,.field textarea:focus,.search:focus{border-color:var(--p);box-shadow:0 0 0 3px rgba(8,127,115,.09)}.full{grid-column:1/-1}.form-wrap>.btn,.form-wrap form>.btn{width:100%}.note{text-align:center;color:var(--muted);font-size:13px}.app-layout{display:grid;grid-template-columns:245px 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.btn{width:100%}.lesson-num{width:42px;height:42px;display:grid;place-items:center;background:var(--ps);color:var(--pd);border-radius:12px;font-weight:900}.lesson-info{flex:1}.lesson-info strong{display:block;color:var(--dark)}.lesson-info small{color:var(--muted)}.status{display:inline-flex;padding:4px 9px;border-radius:999px;font-size:11px;font-weight:800}.ok{background:#e7f8f1;color:#167357}.warn{background:#fff4dc;color:#896000}.bad{background:#ffecee;color:#aa343a}.alert{padding:13px 15px;border-radius:13px;margin-bottom:15px;font-size:13px}.info{background:#edf9f7;color:var(--pd);border:1px solid #cbeae4}.warning{background:#fff7e5;color:#825b00;border:1px solid #ffe1a4}.danger{background:#fff0f1;color:#a82f36;border:1px solid #ffd3d6}.video{background:#07181b;border-radius:20px;aspect-ratio:16/9;display:grid;place-items:center;overflow:hidden;position:relative}.video iframe{width:100%;height:100%;border:0}.video-placeholder{color:white;text-align:center}.video-placeholder div{font-size:58px}.watermark{position:absolute;z-index:3;top:12px;left:12px;color:rgba(255,255,255,.56);font-size:11px;pointer-events:none}.tabs{display:flex;gap:7px;flex-wrap:wrap;margin:17px 0}.tab{border:1px solid var(--line);background:white;border-radius:10px;padding:8px 12px;cursor:pointer}.tab.active{background:var(--p);color:white;border-color:var(--p)}.comment{padding:13px;border:1px solid var(--line);border-radius:13px;margin-bottom:9px;background:white}.comment-head{display:flex;justify-content:space-between;gap:8px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;min-width:680px}th,td{text-align:right;padding:11px;border-bottom:1px solid #edf2f1;font-size:12px}th{color:var(--muted);background:#fbfdfc}.bars{height:210px;display:flex;align-items:flex-end;gap:10px;padding-top:15px}.bar{flex:1;background:linear-gradient(180deg,#41b4a6,var(--p));border-radius:8px 8px 2px 2px;position:relative}.bar span{position:absolute;bottom:-24px;width:100%;text-align:center;font-size:10px;color:var(--muted)}.modal-backdrop{position:fixed;inset:0;background:rgba(5,22,25,.7);display:grid;place-items:center;padding:16px;z-index:100}.modal{width:min(560px,100%);background:white;border-radius:22px;padding:24px;box-shadow:var(--shadow)}.modal h2{color:var(--dark);margin-top:0}.hidden{display:none!important}.toast{position:fixed;bottom:18px;left:18px;z-index:200;background:var(--dark);color:white;padding:12px 16px;border-radius:12px;box-shadow:var(--shadow);opacity:0;transform:translateY(15px);transition:.22s;pointer-events:none}.toast.show{opacity:1;transform:none}.empty{text-align:center;padding:38px;color:var(--muted)}.spinner{width:32px;height:32px;border:4px solid #d8ebe7;border-top-color:var(--p);border-radius:50%;animation:spin .8s linear infinite;margin:auto}@keyframes spin{to{transform:rotate(360deg)}}.menu-btn{display:none}
@media(max-width:980px){.navlinks{display:none}.hero-grid,.subscription,.dash-grid{grid-template-columns:1fr}.cards{grid-template-columns:repeat(2,1fr)}.grades{grid-template-columns:repeat(3,1fr)}.course-grid{grid-template-columns:repeat(2,1fr)}.stats{grid-template-columns:repeat(2,1fr)}.app-layout{grid-template-columns:1fr}.sidebar{display:none;position:fixed;right:0;top:0;z-index:80;width:245px}.sidebar.open{display:block}.menu-btn{display:inline-flex}}
@media(max-width:620px){.brand small,.actions .btn-light{display:none}.hero{padding:48px 0 56px}.hero h1{font-size:38px}.lead{font-size:16px}.hero-actions .btn{width:100%}.mock-body{grid-template-columns:78px 1fr}.section{padding:60px 0}.cards,.grades,.course-grid,.stats,.form-grid{grid-template-columns:1fr}.subscription{padding:23px 18px}.main{padding:18px 13px}.toolbar{align-items:flex-start;flex-direction:column}.footer-row{flex-direction:column;text-align:center}}