*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;color:#18212b;background:#f5f7fa}a{text-decoration:none;color:inherit}.top{height:72px;padding:0 6%;display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid #e6e9ee}.top nav{display:flex;gap:20px;align-items:center}.brand{font-weight:800;font-size:19px}.brand span{margin:0 3px}.hero{max-width:1180px;margin:auto;padding:85px 6%;display:grid;grid-template-columns:1.3fr .7fr;gap:60px;align-items:center}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:800;color:#6d7785}.hero h1{font-size:54px;line-height:1.03;letter-spacing:-2.5px;margin:15px 0}.lead{font-size:19px;line-height:1.6;color:#687384;max-width:680px}.actions{display:flex;gap:12px;margin-top:28px}.btn{display:inline-block;border:0;border-radius:10px;padding:11px 18px;background:#18212b;color:#fff;font-weight:700;cursor:pointer;margin-top:8px}.btn.secondary{background:#e9edf2;color:#18212b}.btn.ghost{background:transparent;color:#18212b;border:1px solid #dce1e7}.btn.wide{width:100%}.btn.small{padding:8px 12px;font-size:12px}.hero-card{background:#18212b;color:#fff;border-radius:22px;padding:30px;box-shadow:0 20px 60px #17202b20}.mini-label{font-size:11px;letter-spacing:2px;opacity:.55;margin-bottom:20px}.path{display:flex;gap:18px;padding:18px 0;border-top:1px solid #ffffff20}.path b{opacity:.5}.section{background:#fff;padding:75px 8%}.section h2{font-size:38px;max-width:650px}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.courses-grid{grid-template-columns:repeat(3,1fr)}.card{background:#fff;border:1px solid #e3e7ec;border-radius:16px;padding:23px}.section .card,.course{box-shadow:0 10px 35px #17202b08}.card h3{margin:6px 0 10px}.card p,.muted{color:#687384;line-height:1.55}.center{min-height:100vh;display:grid;place-items:center;padding:20px}.login-card{width:min(430px,100%);background:#fff;padding:36px;border-radius:18px;border:1px solid #e2e7ed;box-shadow:0 20px 60px #17202b10}.login-card h1{font-size:36px;margin:10px 0}.back{font-size:13px;color:#5e6876}.hint{font-size:12px;color:#687384;margin-top:18px}label{display:block;font-weight:700;font-size:13px;margin:16px 0}input,textarea,select{display:block;width:100%;margin-top:7px;padding:11px;border:1px solid #d9dfe6;border-radius:9px;font:inherit;background:#fff}.alert,.success{padding:12px;border-radius:9px;font-size:13px;margin:14px 0}.alert{background:#fff1f1;border:1px solid #f0caca}.success{background:#edf8f0;border:1px solid #cde8d3}.dashboard{max-width:1180px;margin:auto;padding:50px 6%}.dash-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:32px}.dash-head h1{font-size:42px;margin:8px 0}.course-tag{font-size:10px;letter-spacing:2px;font-weight:800;color:#7a8491}.meta{font-size:13px}.progress{height:7px;background:#edf0f3;border-radius:10px;margin:18px 0 7px}.progress span{display:block;height:100%;background:#18212b;border-radius:10px}.course .btn{margin-top:16px}.module{margin:20px 0}.module-title{margin-bottom:10px}.module-title>span{font-size:10px;letter-spacing:2px;color:#788290;font-weight:800}.module-title h2{margin:5px 0 12px}.lesson-row{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid #e3e7ec;padding:17px 19px;margin:7px 0;border-radius:12px}.lesson-row:hover{border-color:#b9c1ca}.lesson-row>span:nth-child(2){flex:1}.lesson-row small{display:block;color:#7a8491;margin-top:4px}.check{font-size:20px;color:#9aa3ad}.check.done{font-weight:900}.course-head{display:flex;justify-content:space-between;gap:35px;align-items:end;margin:25px 0 35px}.course-head h1{font-size:42px;max-width:780px}.progress-box{min-width:220px}.progress-box b{font-size:28px;display:block}.progress-box span{font-size:12px;color:#788290}.lesson-page{max-width:850px;margin:auto;padding:55px 6%}.lesson-page h1{font-size:46px;letter-spacing:-1.5px}.lesson-content{background:#fff;border:1px solid #e3e7ec;border-radius:16px;padding:28px;line-height:1.8;margin:28px 0}.resource{background:#fff;border:1px solid #e3e7ec;border-radius:14px;padding:20px;margin:12px 0}.builder-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:20px;margin:25px 0}.admin-course{display:flex;justify-content:space-between;align-items:center;margin:12px 0}.lesson-admin{display:flex;gap:12px;align-items:center;padding:12px 0;border-top:1px solid #edf0f3}.lesson-admin small{margin-left:auto;color:#788290}footer{text-align:center;padding:35px;color:#89929e;font-size:13px}@media(max-width:850px){.hero{grid-template-columns:1fr}.grid,.courses-grid{grid-template-columns:1fr 1fr}.builder-grid{grid-template-columns:1fr}.course-head{flex-direction:column;align-items:start}}@media(max-width:560px){.grid,.courses-grid{grid-template-columns:1fr}.top nav{gap:10px;font-size:12px}.hero h1{font-size:40px}.dashboard{padding-left:5%;padding-right:5%}.dash-head{flex-direction:column;align-items:start}.course-head h1,.lesson-page h1{font-size:35px}.lesson-row{padding:14px}.admin-course{flex-direction:column;align-items:start;gap:8px}}