:root{--bg:#f5f5f2;--ink:#222721;--muted:#697066;--green:#c4ed79;--line:#dfe3d9}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,Helvetica,sans-serif;font-size:16px}a{color:inherit;text-decoration:none}button,input{font:inherit}a,button,input{outline-offset:5px}header{max-width:1240px;margin:auto;padding:26px 40px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);gap:24px}.brand{font-size:24px;font-weight:900;letter-spacing:-1px}.brand span{font-size:13px;letter-spacing:0;margin-left:12px;border-left:1px solid #adb3a8;padding-left:12px;font-weight:400}nav{display:flex;gap:25px;align-items:center}.quiet,nav a{font-size:14px}.quiet{border:0;background:transparent;cursor:pointer;color:var(--muted);padding:10px}main{max-width:1120px;padding:55px 24px 80px;margin:auto;min-height:75vh}.eyebrow{text-transform:uppercase;letter-spacing:1.7px;font-size:11px;font-weight:700;color:var(--muted);margin-bottom:28px}h1{font-size:clamp(32px,5vw,58px);line-height:1.08;letter-spacing:-2px;margin:18px 0 22px;max-width:900px}h2{font-size:23px;letter-spacing:-.6px}.accent{color:#53743b}.lead{color:var(--muted);line-height:1.7;margin-bottom:54px}p{line-height:1.65}.section-title{display:flex;align-items:center;gap:16px}.section-title>span,.tags span{border:1px solid var(--line);border-radius:30px;padding:5px 12px;font-size:13px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}.course-card{border:1px solid var(--line);background:#fff;border-radius:18px;overflow:hidden;max-width:510px;transition:transform .15s}.course-card:hover{transform:translateY(-3px)}.course-art{background:var(--green);padding:25px;display:flex;min-height:160px;gap:18px;align-items:center}.course-art strong{font-size:40px;letter-spacing:-2px;flex:1 1}.course-art span{align-self:flex-start}.card-body{padding:26px}.card-body h2{margin:0}.card-body p{color:var(--muted);margin-bottom:8px}small{color:var(--muted);line-height:1.5}.card-link{border-top:1px solid var(--line);margin-top:24px;padding-top:20px;font-weight:700}.back{display:inline-block;font-size:14px;margin-bottom:20px}.modules{display:grid;gap:24px}.module{border:1px solid var(--line);border-radius:16px;background:#fff;overflow:hidden;scroll-margin-top:24px}.module h2{padding:24px;margin:0;display:flex;align-items:center;gap:18px}.number{font-size:14px;color:var(--muted)}.lesson-row{display:flex;align-items:center;gap:18px;padding:20px 24px;border-top:1px solid var(--line);min-height:86px}.lesson-row:hover{background:#f5faec}.lesson-row strong{line-height:1.5;font-size:16px}.lesson-row small{display:block;margin-top:4px}.type-icon{width:40px;height:40px;flex-shrink:0;display:grid;place-items:center;background:#eef4e5;border-radius:12px;color:#547535}.type-icon.test{background:#f3ecff;color:#805ca4}.arrow{margin-left:auto}.breadcrumb{font-size:14px;color:var(--muted)}.lesson-title{font-size:clamp(30px,4vw,46px)}.tags{display:flex;gap:10px;margin-bottom:28px}.resource{border:1px solid var(--line);border-radius:20px;background:#e9efdf;text-align:center;padding:48px 24px}.resource-symbol{display:grid;place-items:center;width:64px;height:64px;border-radius:50%;background:var(--ink);color:var(--green);margin:auto;font-size:23px}.resource p{color:var(--muted)}.button{border:0;background:var(--ink);color:white;display:inline-flex;justify-content:center;gap:25px;align-items:center;padding:17px 28px;border-radius:10px;font-weight:700;cursor:pointer;min-height:52px}.button:hover{background:#3c4c30}.description{margin:36px 0;max-width:780px}.description p{white-space:pre-wrap}.lesson-nav{border-top:1px solid var(--line);padding-top:24px;margin-top:40px;display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}.lesson-nav a{line-height:1.6}.lesson-nav a:last-child{text-align:right}.lesson-nav small{display:block;margin-bottom:8px}footer{border-top:1px solid var(--line);text-align:center;font-size:12px;color:var(--muted);padding:24px}.login{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:30px;padding:35px 20px}.login-brand{font-size:32px;font-weight:900;letter-spacing:-1.4px}.login-brand span{display:block;text-align:center;text-transform:uppercase;font-size:12px;letter-spacing:4px;margin-top:10px;color:#53743b}.login-card{width:100%;max-width:450px;padding:40px;background:white;border:1px solid var(--line);border-radius:20px}.login-card h1{font-size:34px;letter-spacing:-1px}.login-card p{color:var(--muted)}label{display:block;font-size:14px;font-weight:700;margin:30px 0 10px}input{width:100%;padding:15px;border:1px solid #a6afa0;border-radius:9px}.login-card .button{width:100%;margin:18px 0 22px;background:var(--green);color:var(--ink)}.error{color:#a53030!important;font-size:14px}.empty{padding:32px;border:1px dashed #bfc8b4;border-radius:16px}@media (max-width:600px){header{padding:20px;flex-wrap:wrap;gap:15px}.brand{font-size:22px}header nav{width:100%;justify-content:space-between;gap:15px}main{padding-top:32px}h1{letter-spacing:-1px}.lead{margin-bottom:30px}.module h2{padding:20px;font-size:20px}.lesson-row{padding:18px 16px;gap:12px}.login-card{padding:28px}.lesson-nav{gap:18px}.course-art strong{font-size:34px}}