:root{--navy:#17324d;--blue:#2677a8;--teal:#27a49a;--pale:#eef7f7;--ink:#173042;--muted:#657785;--line:#dce5e8;--white:#fff;--danger:#b33a3a}*{box-sizing:border-box}body{margin:0;background:#f6f9fa;color:var(--ink);font:16px/1.5 system-ui,-apple-system,sans-serif}button,input,textarea,select{font:inherit}button{cursor:pointer}header{height:76px;background:var(--navy);color:white;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100% - 1120px)/2));box-shadow:0 2px 12px #17324d33}.brand{display:flex;align-items:center;gap:12px}.brand h1{font-size:20px;margin:0}.brand small{opacity:.75}.mark{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--teal),#62c7bd);font-weight:800;color:white}.mark.large{width:58px;height:58px;font-size:26px}nav{display:flex;gap:8px}nav button,.tabs button{border:0;background:transparent;color:inherit;padding:9px 12px;border-radius:7px}nav button:hover{background:#ffffff18}main{max-width:1120px;margin:auto;padding:38px 24px}.hero{background:linear-gradient(120deg,#e5f5f3,#e9f1f8);border-radius:18px;padding:30px;margin-bottom:22px}.hero h2,.section-head h2{margin:4px 0 6px;font-size:30px}.hero p:last-child{margin-bottom:0;color:var(--muted)}.eyebrow{text-transform:uppercase;letter-spacing:.12em;color:var(--teal);font-size:12px;font-weight:800;margin:0}.toolbar,.section-head{display:flex;justify-content:space-between;gap:14px;align-items:center;margin:20px 0}.toolbar input{width:min(430px,100%)}input,textarea,select{border:1px solid #bdccd1;border-radius:8px;padding:11px 12px;background:white;width:100%}textarea{min-height:95px;resize:vertical}.primary{border:0;border-radius:8px;background:var(--blue);color:white;padding:11px 16px;font-weight:700}.secondary,.danger{border:1px solid var(--line);border-radius:8px;background:white;padding:9px 13px}.danger{color:var(--danger);border-color:#e5baba}.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}.course-card,.list-item{background:white;border:1px solid var(--line);border-radius:13px;padding:20px;box-shadow:0 3px 12px #17324d0b}.course-card{cursor:pointer}.course-card:hover{border-color:#8fbec7;transform:translateY(-1px)}.course-card h3,.list-item h3{margin:0 0 5px}.course-card p,.list-item p{color:var(--muted);margin:0}.progress{height:8px;background:#e7edef;border-radius:8px;margin:18px 0 7px;overflow:hidden}.progress span{display:block;height:100%;background:var(--teal)}.progress-label{font-size:13px;color:var(--muted)}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:20px}.tabs button{color:var(--muted);border-radius:7px 7px 0 0}.tabs button.active{background:#e8f3f5;color:var(--navy);font-weight:700}.panel>.primary{margin-bottom:14px}.list{display:grid;gap:10px}.list-item{display:flex;justify-content:space-between;align-items:center;gap:15px}.actions{display:flex;gap:7px;flex-wrap:wrap}.empty{text-align:center;color:var(--muted);padding:60px}.overlay{position:fixed;inset:0;background:#102638b8;display:grid;place-items:center;padding:18px;z-index:5}.overlay[hidden],[hidden]{display:none!important}.modal{position:relative;background:white;border-radius:16px;padding:28px;width:min(620px,100%);max-height:90vh;overflow:auto;box-shadow:0 20px 60px #0004}.modal.auth{width:min(430px,100%);text-align:center}.modal form{text-align:left}.modal label{display:block;font-weight:650;margin:14px 0}.modal label input,.modal label textarea,.modal label select{margin-top:5px;font-weight:400}.modal form>.primary{width:100%;margin-top:8px}.close{position:absolute;right:14px;top:10px;border:0;background:none;font-size:30px;color:var(--muted)}.error{color:var(--danger);min-height:22px}.hint{color:var(--muted);font-size:13px}.lesson-row{padding:13px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr auto;gap:12px}.lesson-row a{font-weight:700;color:var(--blue)}.complete{color:#177469;font-weight:700}.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}#toast{position:fixed;right:20px;bottom:20px;background:var(--navy);color:white;border-radius:8px;padding:12px 18px;opacity:0;pointer-events:none;transition:.2s}#toast.show{opacity:1}@media(max-width:600px){header{height:auto;padding:13px 16px;align-items:flex-start}.brand small{display:none}.brand h1{font-size:17px}nav{flex-direction:column;align-items:stretch}nav button{padding:5px 8px}main{padding:22px 14px}.hero{padding:22px}.hero h2{font-size:25px}.toolbar,.list-item{align-items:stretch;flex-direction:column}.course-grid{grid-template-columns:1fr}.actions button{flex:1}.modal{padding:24px 18px}.lesson-row{grid-template-columns:1fr}}