*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f5f7f4;color:#162133;font:16px/1.65 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:#3079ee;text-decoration:none}button,input,select{font:inherit}button,a,input,select{outline-offset:4px}button{cursor:pointer}.topbar{background:#f5f7f4;border-bottom:1px solid #e8eeea}.top-inner{max-width:1240px;margin:auto;padding:22px 24px;display:flex;align-items:center;gap:44px}.brand{font-weight:750;font-size:24px;color:#25374c;white-space:nowrap}.brand-icon{color:#337fff;font-size:32px;vertical-align:middle}.top-inner nav{display:flex;gap:30px;font-size:14px;font-weight:650}.top-inner nav a{color:#344256}.top-inner nav .selected{color:#337fff}.total-progress{margin-left:auto;color:#718198;font-size:13px;white-space:nowrap}.page{max-width:1180px;margin:34px auto 60px;padding:0 24px}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px}.breadcrumb{font-size:14px;color:#7788a0}.breadcrumb span{padding:0 12px;color:#9aabc0}.breadcrumb strong{color:#233047;font-weight:550}.course-picker{display:flex;align-items:center;gap:10px;font-size:13px;color:#72829a}.course-picker select{border:1px solid #dfe6ee;border-radius:10px;background:white;padding:8px 32px 8px 12px;color:#344256;max-width:240px}.layout{display:grid;grid-template-columns:340px minmax(0,1fr);gap:44px;align-items:start}.course-card{background:white;border:1px solid #e1eaf3;border-radius:30px;overflow:hidden;box-shadow:0 20px 45px #23304708;position:sticky;top:24px}.cover{height:215px;background:#edf5ff;display:grid;place-items:center}.cover svg{width:180px;height:180px}.course-body{padding:26px}.eyebrow{font-size:12px;letter-spacing:2px;color:#367bff;font-weight:750;margin:0 0 10px}.course-body h2{font-size:28px;line-height:1.3;letter-spacing:-.8px;margin:0 0 20px}.description{color:#687992;font-size:15px;line-height:1.8;margin:0 0 24px}.course-stat{border-top:1px solid #edf0f4;border-bottom:1px solid #edf0f4;padding:16px 0;color:#52647b;font-size:13px;font-weight:650}.book-icon{color:#367bff;margin-right:8px}.progress-bar{height:5px;border-radius:10px;background:#edf1f6;margin-top:12px;overflow:hidden}.progress-bar span{display:block;height:100%;background:#3d83f6}.primary{display:block;width:100%;background:#347df0;color:white;border:0;border-radius:28px;padding:13px 16px;font-size:13px;font-weight:750;text-align:center;box-shadow:0 4px 0 #2553d9;margin-top:24px}.small-note{font-size:11px;color:#8190a6;text-align:center;margin:15px 0 0}.course-body .course-back{display:block;text-align:center;margin-top:18px;font-size:13px}.main-heading{font-size:29px;line-height:1.3;letter-spacing:-.8px;margin:0 0 26px;font-weight:750}.search-wrap{margin:0 0 20px}.search-wrap label{display:block;color:#718198;font-size:12px;margin-bottom:6px}.search-wrap input{width:100%;background:#fff;border:1px solid #dce5ef;border-radius:12px;padding:11px 15px;font-size:14px;color:#27364a}.syllabus{position:relative;display:grid;gap:15px}.syllabus:before{content:"";position:absolute;left:49px;top:24px;bottom:24px;width:1px;background:#e0e8f0}.lesson-card{position:relative;display:flex;align-items:center;gap:20px;padding:22px;background:white;border:1px solid #e0e8f2;border-radius:17px;box-shadow:0 8px 22px #1c304908;color:#192437;transition:border-color .15s,transform .15s}.lesson-card:hover{border-color:#4389ff;transform:translateY(-2px)}.lesson-card.next{border-color:#8bb8ff}.number{border:2px solid #e0e8f2;border-radius:15px;min-width:52px;height:52px;display:grid;place-items:center;font-size:15px;font-weight:700;color:#718198}.next .number{border-color:#4288ff;color:#367bff}.completed .number{color:#2b9270;border-color:#bce5d4;background:#f2fbf7}.lesson-text{flex:1}.lesson-text h3{font-size:17px;font-weight:750;margin:0 0 7px;line-height:1.4}.lesson-text p{font-size:13px;line-height:1.65;color:#7688a2;margin:0}.chevron{color:#a5b5c9;font-size:25px}.empty{color:#718198;padding:24px}.lesson-header{display:flex;align-items:center;gap:15px;justify-content:space-between;margin-bottom:24px}.lesson-header a{font-size:13px;white-space:nowrap}.lesson-header .main-heading{margin:0}.reading{background:white;border:1px solid #e1e9f2;border-radius:20px;padding:30px;color:#3c4c61;overflow-wrap:anywhere}.reading h2{font-size:23px;color:#1d2d42;margin-top:34px;line-height:1.4}.reading h3{color:#1d2d42}.reading a{overflow-wrap:anywhere}.reading img{max-width:100%}code{font: .92em ui-monospace,SFMono-Regular,Consolas,monospace}pre{background:#182b40;color:#e0eaf6;padding:19px;border-radius:12px;overflow:auto;line-height:1.7}p code,li code{background:#eef3f9;padding:2px 5px;border-radius:4px}table{border-collapse:collapse;display:block;overflow:auto}td,th{border:1px solid #dce5ef;padding:9px}.quiz{border:1px solid #dee8f3;border-radius:15px;padding:18px;margin:30px 0;min-width:0}.quiz legend{font-weight:650;font-size:14px;color:#23354c;max-width:100%}.quiz legend p{margin:0}.answer{display:block;width:100%;background:#f4f7fb;color:#35455b;text-align:left;border:1px solid #e1e8f1;border-radius:10px;padding:12px 14px;margin:9px 0;font-size:14px}.answer:hover{border-color:#77aaff}.answer p{margin:0}.answer.correct{background:#e5f7ed;border-color:#73ba94}.answer.incorrect{background:#fff0ed;border-color:#dd8a7b}.feedback{font-size:13px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px;align-items:center}.actions button{background:#347df0;border:0;color:white;border-radius:24px;padding:12px 20px;font-size:14px}.navlink{background:white;border:1px solid #dbe5ef;border-radius:24px;padding:11px 18px;font-size:14px}footer{max-width:1100px;padding:28px 24px;margin:auto;border-top:1px solid #e4ebe7;text-align:center;color:#8492a4;font-size:11px;line-height:1.9}footer a{color:#6d83a0}@media(max-width:900px){.layout{grid-template-columns:285px minmax(0,1fr);gap:24px}.course-body{padding:22px}.course-body h2{font-size:24px}.top-inner{gap:24px}.top-inner nav{gap:20px}.total-progress{display:none}.lesson-card{gap:14px;padding:18px}.main-heading{font-size:25px}.reading{padding:22px}}@media(max-width:650px){.top-inner{padding:16px 20px;flex-wrap:wrap;gap:10px}.brand{font-size:21px}.top-inner nav{margin-left:auto;gap:18px;font-size:12px}.top-inner nav a:last-child{display:none}.page{margin-top:22px;padding:0 18px}.toolbar{align-items:flex-start;flex-direction:column;gap:14px}.course-picker{width:100%}.course-picker select{flex:1;max-width:none}.layout{display:block}.course-card{position:static;margin-bottom:30px;border-radius:22px}.cover{height:150px}.cover svg{height:125px;width:125px}.course-body{padding:22px}.course-body h2{margin-bottom:12px}.description{margin-bottom:16px}.primary{margin-top:18px}.lesson-card{padding:18px 14px;gap:14px;border-radius:14px}.number{min-width:44px;height:44px;border-radius:12px}.syllabus:before{left:37px}.lesson-text h3{font-size:15px}.lesson-text p{font-size:12px}.reading{padding:18px}.lesson-header{align-items:flex-start}.main-heading{font-size:24px}}

.save-status{text-align:center;padding:12px;color:#42566c}dialog{border:0;border-radius:16px;max-width:440px;width:calc(100% - 32px);padding:28px;box-shadow:0 20px 80px #0004}dialog::backdrop{background:#12233c99}dialog label{display:block;margin:16px 0}dialog input{display:block;width:100%;padding:12px;border:1px solid #bcc9d8;border-radius:8px;margin-top:6px}dialog button,#account{padding:9px 14px;border:1px solid #c8d5e3;border-radius:8px;background:#edf5ff;color:#163e69;cursor:pointer}.dialog-close{float:right}#auth-error{color:#9d2626}button:disabled{opacity:.6;cursor:wait}@media(max-width:700px){.top-inner{flex-wrap:wrap}#account{margin:4px}}