:root{--red:#df252d;--green:#078652;--green2:#0aa069;--ink:#102f27;--muted:#63776f;--line:#c6d9d0;--soft:#f4faf7;--white:#fff;--gold:#9a6a00;--violet:#7047a5;--shadow:0 16px 50px rgba(8,70,49,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f9fcfa;color:var(--ink);font-family:Arial,Helvetica,sans-serif}.container{width:min(1180px,calc(100% - 40px));margin:auto}.top{background:rgba(249,252,250,.97);border-bottom:1px solid #dce8e3;position:sticky;top:0;z-index:30}.top-inner{min-height:82px;display:flex;align-items:center;gap:26px}.brand{text-decoration:none;font-weight:900;font-size:27px;letter-spacing:-1.5px;white-space:nowrap}.turbo{color:var(--red)}.uroki{color:var(--green)}.nav{margin-left:auto;display:flex;gap:20px;align-items:center;flex-wrap:wrap}.nav a{text-decoration:none;color:#51675f;font-weight:700;font-size:14px}.nav a:hover,.nav a.active{color:var(--green)}
.hero{padding:60px 0 48px;background:linear-gradient(125deg,#fbfdfc,#ecf8f2);border-bottom:1px solid #dbe7e2;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(7,134,82,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(7,134,82,.035) 1px,transparent 1px);background-size:32px 32px}.hero .container{position:relative}.crumbs{display:flex;gap:8px;flex-wrap:wrap;font-size:13px;color:#73877f;margin-bottom:20px}.crumbs a{color:var(--green);text-decoration:none}.eyebrow{display:inline-block;border-left:3px solid var(--green);background:#e6f5ed;padding:8px 11px;color:#426a5f;font:700 12px ui-monospace,monospace;margin-bottom:18px}.hero h1{font-size:clamp(40px,6vw,68px);line-height:1;letter-spacing:-2.8px;margin:0 0 18px}.hero h1 span{color:var(--green)}.hero p{font-size:19px;line-height:1.55;color:#566c64;max-width:820px;margin:0}.stats{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.stat{background:white;border:1px solid var(--line);padding:11px 14px;border-radius:12px;font-size:13px;color:#496158}.stat strong{color:var(--green)}
.section{padding:46px 0 72px}.toolbar{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:24px}.search{flex:1;min-width:250px;padding:14px 16px;border:1px solid var(--line);background:white;border-radius:12px;font-size:15px}.filters{display:flex;gap:8px;flex-wrap:wrap}.filter{border:1px solid var(--line);background:white;padding:11px 13px;border-radius:999px;cursor:pointer;font-weight:800;color:#5d7069}.filter.active{background:var(--green);color:white;border-color:var(--green)}.progressbox{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);padding:14px 16px;border-radius:14px;margin:0 0 22px}.progressbar{height:9px;background:#e5eee9;flex:1;border-radius:99px;overflow:hidden}.progressbar i{display:block;height:100%;background:linear-gradient(90deg,var(--green),#18b778);width:0}.progressbox b{white-space:nowrap}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{background:white;border:1px solid var(--line);padding:20px;text-decoration:none;color:inherit;min-height:210px;display:flex;flex-direction:column;border-radius:16px;transition:.18s}.card:hover{transform:translateY(-3px);border-color:var(--green);box-shadow:var(--shadow)}.card-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.num{font:900 13px ui-monospace,monospace;color:var(--green)}.badge{font:800 11px ui-monospace,monospace;border-radius:99px;padding:5px 8px}.badge.base{background:#e7f6ef;color:#076e45}.badge.advanced{background:#fff4d8;color:#805900}.badge.high{background:#f2eafa;color:#67428f}.card h3{font-size:20px;line-height:1.16;margin:18px 0 8px;letter-spacing:-.4px}.card p{color:#687c74;line-height:1.45;font-size:14px;margin:0 0 18px}.card-foot{margin-top:auto;display:flex;justify-content:space-between;gap:10px;font-size:12px;font-weight:800;color:#71867d}.done-dot{color:var(--green)}
.lesson{padding:42px 0 76px}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:26px;align-items:start}.content{display:grid;gap:18px}.box{background:#fff;border:1px solid var(--line);padding:25px;border-radius:17px}.box h2{font-size:25px;letter-spacing:-.6px;margin:0 0 15px}.box h3{font-size:18px;margin:20px 0 10px}.box p,.box li{line-height:1.64;color:#425b52}.box ol,.box ul{padding-left:22px}.callout{border-left:4px solid var(--green);background:#edf8f3;padding:15px 17px;border-radius:0 12px 12px 0;line-height:1.55;color:#35594d}.warning{border-left-color:var(--red);background:#fff4f4}.source-note{font-size:13px;color:#657b72;background:#f6faf8;border:1px dashed #bfd4ca;padding:12px 14px;border-radius:12px}.practice{background:linear-gradient(135deg,#fff,#f0f9f5)}.practice input,.practice textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:13px 14px;font-size:16px;font-family:inherit;background:white}.practice textarea{min-height:210px;resize:vertical}.buttons{display:flex;gap:10px;flex-wrap:wrap;margin-top:13px}.btn{border:0;border-radius:11px;padding:12px 15px;font-weight:800;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.btn.primary{background:var(--green);color:white}.btn.secondary{background:#e9f4ef;color:#126445}.btn.red{background:#fff0f0;color:#a71f26}.feedback{margin-top:12px;font-weight:800;min-height:22px}.feedback.ok{color:var(--green)}.feedback.bad{color:var(--red)}.checklist{display:grid;gap:9px;margin-top:16px}.checkitem{display:flex;gap:9px;align-items:flex-start;background:#fff;border:1px solid #dbe8e2;border-radius:10px;padding:10px 12px}.checkitem input{width:auto;margin-top:3px}
.side{position:sticky;top:104px;display:grid;gap:14px}.sidebox{background:white;border:1px solid var(--line);border-radius:15px;padding:18px}.sidebox h3{margin:0 0 12px;font-size:16px}.sidebox a{display:block;text-decoration:none;color:#456158;padding:7px 0;font-size:14px}.sidebox a:hover{color:var(--green)}.markbtn{width:100%;border:1px solid var(--green);background:#fff;color:var(--green);padding:12px;border-radius:11px;font-weight:900;cursor:pointer}.markbtn.done{background:var(--green);color:#fff}.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:12px}.prevnext a{border:1px solid var(--line);background:#fff;border-radius:12px;padding:14px;text-decoration:none;color:#35574c;font-weight:800}.prevnext a:last-child{text-align:right}.footer{border-top:1px solid #dce8e3;padding:30px 0 45px;color:#657970}.footer-inner{display:flex;justify-content:space-between;gap:20px;align-items:center}.small{font-size:12px;color:#7a8d86}
@media(max-width:900px){.grid{grid-template-columns:repeat(2,1fr)}.lesson-layout{grid-template-columns:1fr}.side{position:static}.top-inner{align-items:flex-start;flex-direction:column;padding:16px 0;gap:12px}.nav{margin-left:0;gap:12px}}
@media(max-width:580px){.container{width:min(100% - 24px,1180px)}.grid{grid-template-columns:1fr}.hero h1{font-size:42px}.hero p{font-size:17px}.box{padding:19px}.prevnext{grid-template-columns:1fr}.prevnext a:last-child{text-align:left}}