:root{--ink:#172033;--muted:#697386;--bg:#f5f7fb;--card:#fff;--line:#e5e9f2;--primary:#6757d9;--primary2:#8a7cf0;--ok:#29a878;--danger:#d94b61}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.topbar{height:72px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1180px)/2));position:sticky;top:0;z-index:10}.brand{font-weight:800;color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:10px}.brand span{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff}.topbar nav{display:flex;gap:20px;align-items:center}.topbar nav a,.link-button{color:var(--muted);text-decoration:none;background:none;border:0;font:inherit;cursor:pointer;padding:0}.topbar form{margin:0}.shell{max-width:1180px;margin:0 auto;padding:42px 24px 80px}.hero{background:linear-gradient(135deg,#28224f,#6757d9);color:#fff;padding:38px;border-radius:26px;display:flex;justify-content:space-between;align-items:center;margin-bottom:28px;box-shadow:0 18px 50px rgba(48,39,105,.18)}.hero h1{font-size:38px;line-height:1.1;margin:5px 0 12px}.hero p{margin:0;opacity:.82;max-width:650px}.hero .primary{background:#fff;color:var(--primary)}.hero-stat{min-width:145px;text-align:center;padding:20px;border:1px solid rgba(255,255,255,.22);border-radius:18px;background:rgba(255,255,255,.08)}.hero-stat strong{display:block;font-size:36px}.hero-stat span{opacity:.78}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:12px;font-weight:800;color:var(--primary)}.hero .eyebrow{color:#cfc9ff}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.course-card,.empty{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:24px;color:inherit;text-decoration:none;box-shadow:0 8px 30px rgba(35,45,75,.05)}.course-card h2{font-size:20px;margin:22px 0 8px}.course-card p{color:var(--muted);min-height:70px}.card-top{display:flex;justify-content:space-between;color:var(--muted);font-size:13px}.pill{background:#e8f7f1;color:#19805d;padding:5px 9px;border-radius:999px;font-weight:700}.pill.danger{background:#fdecee;color:var(--danger)}.progress{height:7px;border-radius:99px;background:#ebeef5;overflow:hidden;margin:9px 0}.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--primary2));border-radius:99px}.metrics{display:flex;gap:16px;margin:24px 0}.metrics div{background:#fff;border:1px solid var(--line);padding:18px 26px;border-radius:16px}.metrics strong{display:block;font-size:27px}.metrics span,.muted{color:var(--muted)}.table-wrap{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:auto}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:18px;border-bottom:1px solid var(--line)}th{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}td small{display:block;color:var(--muted)}td a{color:var(--primary);font-weight:700}.overdue{color:var(--danger);font-weight:700}.module{margin:34px 0}.module h2{font-size:22px}.lesson-list{display:grid;gap:10px}.lesson-list a{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:15px;padding:16px;color:inherit;text-decoration:none}.lesson-list a>span:nth-child(2){flex:1}.lesson-list small{display:block;color:var(--muted)}.lesson-state{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#eeeafd;color:var(--primary);font-weight:800}.lesson{max-width:820px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:24px;padding:38px}.lesson h1{font-size:34px;line-height:1.15}.lesson-content{font-size:17px;margin:30px 0}.materials{margin:36px 0}.materials h2{font-size:24px}.workbook-page{margin:24px 0}.workbook-page img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:14px;box-shadow:0 10px 28px rgba(24,32,51,.08)}.workbook-page figcaption{margin-top:8px;color:var(--muted);font-size:13px}.video-material{margin:24px 0}.video-material video{width:100%;max-height:520px;border-radius:14px;background:#111}.resource-link{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:10px 0;padding:16px 18px;border:1px solid var(--line);border-radius:14px;color:var(--ink);text-decoration:none;background:#fafbfe}.resource-link:hover{border-color:var(--primary)}.resource-link small{display:block;color:var(--muted)}.resource-link b{font-size:20px;color:var(--primary)}.back{display:inline-block;margin-bottom:20px;color:var(--muted);text-decoration:none}.auth-card{max-width:520px;margin:50px auto;background:#fff;border:1px solid var(--line);border-radius:24px;padding:36px}.auth-card h1{font-size:32px;margin:5px 0}.form-stack p{display:grid;gap:7px}.form-stack input,.form-stack select{width:100%;padding:12px;border:1px solid #d7dce7;border-radius:10px;font:inherit}.form-stack .helptext,.form-stack ul{font-size:12px;color:var(--muted)}.primary{display:inline-flex;border:0;border-radius:11px;padding:12px 18px;background:var(--primary);color:#fff;text-decoration:none;font-weight:800;cursor:pointer}.quiz fieldset{border:0;border-top:1px solid var(--line);padding:24px 0}.quiz legend{font-weight:800;margin-bottom:12px}.quiz label{display:block;padding:8px 0}.notice{padding:13px 16px;background:#e8f7f1;border-radius:12px;margin-bottom:16px}@media(max-width:800px){.topbar{padding:0 16px}.topbar nav>span{display:none}.shell{padding:24px 16px}.hero{padding:26px;align-items:flex-start}.hero h1{font-size:30px}.hero-stat{display:none}.card-grid{grid-template-columns:1fr}.lesson{padding:24px}.table-wrap{margin:0 -16px;border-radius:0}.brand{font-size:14px}}