.learning-main{padding-bottom:60px}.learning-hero{padding:80px 0 54px;max-width:960px}.learning-hero h1{font-size:clamp(32px,4.2vw,58px);font-weight:600;line-height:1.4;white-space:pre-line;margin:16px 0 24px;letter-spacing:-.025em}.learning-hero p{max-width:760px;font-size:17px;line-height:1.9}.learning-facts{display:grid;gap:7px;margin:27px 0 0;padding:0;list-style:none;color:#b4d8d3;font-size:13px;line-height:1.7}.library-heading{display:flex;justify-content:space-between;align-items:end;gap:28px;margin:12px 0 24px}.library-heading h2{font-size:26px}.library-heading p{font-size:13px}.course-card{border:1px solid #355253;background:#0c171d;border-radius:14px;display:grid;grid-template-columns:310px minmax(0,1fr);gap:34px;padding:26px;margin-bottom:24px}.course-art{width:100%;height:auto;border-radius:7px;align-self:center;border:1px solid #263b44}.course-content{min-width:0}.course-content h3{font-size:26px;margin:6px 0 12px}.course-content p{font-size:14px;line-height:1.9}.course-meta{font-size:12px;color:#9ac9be;margin:14px 0}.download-options{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:22px 0}.format-choice{display:grid;grid-template-columns:auto minmax(0,1fr);gap:9px;align-items:center;background:#101f26;border:1px solid #2e454e;border-radius:8px;padding:12px}.format-choice label{font-weight:600;font-size:13px}.format-choice select,.viewer-options select{min-width:0;width:100%;border:1px solid #4d676f;background:#0c171d;color:#e2eeeb;padding:8px;border-radius:5px;font-family:inherit}.format-choice a{grid-column:1/-1;text-align:center;border:1px solid #4a7270;border-radius:5px;padding:8px;font-size:13px}.format-choice a:hover{background:#233c3c}.preview-open{font-family:inherit;font-size:14px;border:0;background:#b4f4e7;color:#102d28;border-radius:6px;padding:12px 20px;cursor:pointer}.study-note{margin-top:60px;padding-top:30px;border-top:1px solid #2c4549}.study-note h2{font-size:23px;margin-bottom:20px}.study-note ol{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;padding-inline-start:23px;line-height:1.9;color:#c0d4d3}.study-note p{margin-top:24px;font-size:12px;max-width:900px}.header nav{display:flex}.header nav a{font-size:13px}.language-control select{max-width:150px}.viewer-head{position:sticky;top:0;z-index:2;background:#101c24;display:flex;justify-content:space-between;gap:20px;padding:16px 22px;border-bottom:1px solid #35515a}.viewer-head span{font-size:11px;color:#9fb7be}.viewer-head h2{font-size:20px;margin:4px 0}.viewer-head button,.slide-controls button{color:#eaf7f4;font-family:inherit;border:1px solid #48616d;border-radius:5px;background:#1c303b;padding:8px 16px;cursor:pointer}.viewer-options{padding:14px 22px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}.viewer-options label{display:flex;align-items:center;gap:12px;font-size:12px}.viewer-options select{width:140px}.viewer-options a{font-size:12px;text-decoration:underline}.slide-stage{position:relative;background:#071119;min-height:100px}.slide-stage img{width:100%;height:auto;display:block}.slide-stage[aria-busy=true]{opacity:.7}.slide-stage p{padding:30px}.slide-controls{display:flex;align-items:center;justify-content:center;gap:14px;padding:18px}.slide-controls input{width:64px;font-size:14px;text-align:center;background:#071119;color:white;border:1px solid #48616d;border-radius:5px;padding:8px;direction:ltr}.slide-controls span{font-size:12px;color:#adcbc8}.slide-controls button:disabled{opacity:.4;cursor:default}.slide-transcript{margin:0 22px 18px;border:1px solid #324952;border-radius:6px;padding:12px 16px}.slide-transcript summary{cursor:pointer;font-size:13px}.slide-transcript #slide-text{white-space:pre-line;font-size:15px;line-height:1.9;padding:16px 0}.viewer-note{padding:0 22px 16px;font-size:11px;color:#adc2c3}#viewer{padding:0;width:min(1200px,96vw);max-height:94vh;overflow:auto}#catalog-status{margin:24px 0;color:#bbd9d3}#catalog-status[hidden]{display:none}button:focus-visible,select:focus-visible,input:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid #b4f4e7;outline-offset:4px}.learning-main section{scroll-margin-top:100px}
@media(max-width:900px){.course-card{grid-template-columns:230px minmax(0,1fr);gap:24px}.library-heading{align-items:start;flex-direction:column;gap:10px}.study-note ol{grid-template-columns:1fr;gap:15px}.course-art{align-self:start}.download-options{grid-template-columns:1fr}}
@media(max-width:640px){.learning-hero{padding:40px 0}.learning-hero p{font-size:14px}.learning-hero h1{font-size:31px}.course-card{grid-template-columns:1fr;padding:18px;gap:20px}.course-art{max-width:440px;margin:auto}.course-content h3{font-size:23px}.learning-facts{gap:6px;font-size:12px}.header nav{display:none}.viewer-head{padding:12px}.viewer-head h2{font-size:16px}.viewer-head button{padding:6px 10px}.viewer-options{padding:12px}.slide-controls{gap:8px;padding:12px}.slide-controls button{padding:8px 12px;font-size:12px}.slide-controls input{width:50px}.slide-transcript{margin-inline:12px}.download-options{grid-template-columns:1fr 1fr}.format-choice{padding:10px;grid-template-columns:1fr}.format-choice label{font-size:12px}.course-content p{font-size:13px}}
.slide-stage img[hidden]{display:none}
.header .header-inner nav a[href="#library"]{display:inline-flex}
@media(max-width:640px){.header .header-inner{flex-wrap:wrap;gap:12px}.header .header-inner nav{display:flex;order:3;flex-basis:100%;justify-content:center;gap:20px;padding-bottom:8px}.header .header-inner nav a{font-size:12px}}