.catalog-head{max-width:760px;margin:20px auto 38px;text-align:center}.catalog-head h1{margin:8px 0 12px;letter-spacing:-.045em}.catalog-head p{font-size:1rem}
.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.public-catalog{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.course-card{overflow:hidden;background:#fff;border:1px solid #e5eaf1;border-radius:18px;box-shadow:0 10px 30px rgba(15,23,42,.055);transition:transform .2s ease,box-shadow .2s ease}.course-card:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(15,23,42,.1)}
.course-cover{position:relative;height:145px;display:flex;align-items:flex-end;justify-content:space-between;padding:22px;color:#fff;overflow:hidden}.course-cover::after{content:"";position:absolute;width:150px;height:150px;right:-35px;top:-55px;border:34px solid rgba(255,255,255,.11);border-radius:50%}.course-cover>span{font-size:2.1rem;font-weight:950;letter-spacing:-.08em}.course-cover small{position:relative;z-index:1;margin:0;color:rgba(255,255,255,.72);font-size:.58rem;letter-spacing:.13em}.cover-1{background:linear-gradient(135deg,#1e3a8a,#2563eb)}.cover-2{background:linear-gradient(135deg,#115e59,#0d9488)}.cover-3{background:linear-gradient(135deg,#6b21a8,#9333ea)}.cover-4{background:linear-gradient(135deg,#9a3412,#ea580c)}
.course-card-body{display:flex;flex-direction:column;min-height:285px;padding:21px}.course-kicker{color:#2563eb;font-size:.64rem;font-weight:900;letter-spacing:.1em;text-transform:uppercase}.course-card h2,.course-card h3{margin:7px 0 8px;color:#172033;font-size:1.08rem;letter-spacing:-.02em}.course-card p{display:-webkit-box;margin:0 0 18px;overflow:hidden;font-size:.82rem;line-height:1.55;-webkit-line-clamp:3;-webkit-box-orient:vertical}.course-card form{margin-top:auto}.course-action{width:100%;margin-top:auto}.progress-meta{display:flex;justify-content:space-between;margin-top:auto;color:#788496;font-size:.7rem}.progress-meta strong{color:#334155}.progress-track{height:6px;margin:7px 0 17px;background:#edf1f6;border-radius:999px;overflow:hidden}.progress-track span{display:block;height:100%;background:linear-gradient(90deg,#2563eb,#14b8a6);border-radius:inherit}
.rich-empty{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;padding:44px;text-align:center}.rich-empty>span{width:50px;height:50px;display:grid;place-items:center;color:#2563eb;background:#eff6ff;border-radius:50%;font-size:1.3rem}.rich-empty h3{margin:14px 0 0}.rich-empty p{margin:7px 0 18px}
.enroll-hero{display:grid;grid-template-columns:1.25fr .75fr;min-height:520px;overflow:hidden;background:#fff;border:1px solid #e4eaf2;border-radius:22px;box-shadow:0 20px 55px rgba(15,23,42,.08)}.enroll-copy{display:flex;flex-direction:column;justify-content:center;padding:clamp(30px,6vw,72px)}.enroll-copy h2{max-width:700px;margin:9px 0 14px;font-size:clamp(2rem,4vw,3.3rem);letter-spacing:-.05em}.enroll-copy>p{max-width:680px;font-size:1rem}.enroll-benefits{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0 24px}.enroll-benefits span{padding:8px 11px;color:#166534;background:#ecfdf5;border-radius:999px;font-size:.72rem;font-weight:800}.enroll-button{min-width:230px}.enroll-copy>small{margin-top:11px}.enroll-visual{display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;background:radial-gradient(circle at 70% 20%,rgba(96,165,250,.4),transparent 30%),linear-gradient(145deg,#14213d,#1d4ed8);text-align:center}.brand-mark.large{width:92px;height:92px;margin-bottom:20px;border-radius:25px;font-size:1.3rem}.enroll-visual strong{font-size:1.25rem}.enroll-visual small{color:#bfdbfe}
.course-detail-hero{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:clamp(28px,5vw,52px);color:#fff;background:radial-gradient(circle at 80% 5%,rgba(45,212,191,.22),transparent 30%),linear-gradient(120deg,#14213d,#1e3a8a);border-radius:20px;box-shadow:0 18px 45px rgba(30,58,138,.16)}.course-detail-hero h2{max-width:800px;margin:8px 0 11px;color:#fff;font-size:clamp(1.8rem,4vw,3rem);letter-spacing:-.045em}.course-detail-hero p{max-width:700px;color:#cbd5e1}.course-emblem{width:110px;height:110px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.18);border-radius:28px;background:rgba(255,255,255,.09);font-size:2.2rem;font-weight:950;letter-spacing:-.08em;flex:0 0 auto}.course-summary{display:flex;gap:25px;margin-top:22px}.course-summary span{color:#cbd5e1;font-size:.75rem}.course-summary strong{display:block;color:#fff;font-size:1.1rem}
.module-list{display:grid;gap:15px}.module-card{overflow:hidden;background:#fff;border:1px solid #e5eaf1;border-radius:16px;box-shadow:0 7px 22px rgba(15,23,42,.04)}.module-card>header{display:flex;align-items:flex-start;gap:15px;padding:21px 22px;border-bottom:1px solid #edf1f5}.module-card>header>div{flex:1}.module-card header small{margin:0;color:#2563eb;font-size:.63rem;text-transform:uppercase;letter-spacing:.08em}.module-card h3{margin:3px 0}.module-card header p{margin:5px 0 0;font-size:.8rem}.module-number{width:42px;height:42px;display:grid;place-items:center;color:#1d4ed8;background:#eff6ff;border-radius:12px;font-size:.8rem;font-weight:900}.lesson-list{padding:5px 22px}.lesson-row{display:flex;align-items:center;gap:13px;padding:14px 0;border-bottom:1px solid #edf1f5}.lesson-row:last-child{border-bottom:0}.lesson-row>div{display:flex;flex:1;flex-direction:column}.lesson-row small{margin:0;color:#929bad;font-size:.63rem;text-transform:uppercase}.lesson-row strong{margin-top:2px;font-size:.85rem}.lesson-status{width:32px;height:32px;display:grid;place-items:center;color:#2563eb;background:#eff6ff;border-radius:50%;font-size:.65rem}.is-locked{opacity:.66}.is-locked .lesson-status{color:#94a3b8;background:#f1f5f9}
.course-hero{padding:28px;border:1px solid #e5eaf1;border-radius:18px;background:linear-gradient(135deg,#fff,#f1f5ff);box-shadow:0 12px 30px rgba(15,23,42,.06);margin-bottom:18px}.lesson .content{margin:16px 0;padding:24px;line-height:1.8;background:#fff;border:1px solid #e5eaf1;border-radius:16px}.video{overflow:hidden;aspect-ratio:16/9;background:#000;border-radius:16px;box-shadow:0 15px 35px rgba(15,23,42,.12)}.video iframe{width:100%;height:100%;border:0}.lesson-actions{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0}
.lesson-hero{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:clamp(28px,5vw,48px);color:#fff;background:radial-gradient(circle at 85% 10%,rgba(45,212,191,.2),transparent 28%),linear-gradient(125deg,#14213d,#1e3a8a);border-radius:20px;box-shadow:0 18px 42px rgba(30,58,138,.16)}
.lesson-hero h2{max-width:920px;margin:8px 0 10px;color:#fff;font-size:clamp(1.8rem,3.4vw,2.75rem);line-height:1.12;letter-spacing:-.045em}.lesson-hero p{max-width:760px;margin:0;color:#cbd5e1}.lesson-hero-icon{width:86px;height:86px;display:grid;place-items:center;color:#bfdbfe;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.15);border-radius:24px;font-size:1.8rem;flex:0 0 auto}
.lesson-video{max-width:1080px;margin:22px auto}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;align-items:start;margin-top:22px}.lesson-reading{overflow:hidden;background:#fff;border:1px solid #e3e8f0;border-radius:18px;box-shadow:0 10px 30px rgba(15,23,42,.045)}
.reading-label{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:16px 28px;background:#f8fafc;border-bottom:1px solid #edf1f5}.reading-label span{color:#334155;font-size:.72rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.reading-label small{margin:0;font-size:.68rem}
.lesson-content{padding:clamp(26px,4vw,48px);color:#28364a;font-size:1rem;line-height:1.78}.lesson-content>h2:first-child,.lesson-content>div>h2:first-child{display:none}.lesson-content h2{margin:0 0 18px;color:#172033;font-size:1.6rem}.lesson-content h3{position:relative;margin:32px 0 12px;padding-left:14px;color:#172033;font-size:1.1rem;letter-spacing:-.015em}.lesson-content h3::before{content:"";position:absolute;inset:2px auto 2px 0;width:4px;background:linear-gradient(#2563eb,#14b8a6);border-radius:999px}.lesson-content p{margin:0 0 17px;color:#435168;line-height:1.78}.lesson-content>div>p:first-of-type,.lesson-content>p:first-of-type{padding:18px 20px;color:#334155;background:#eff6ff;border:1px solid #dbeafe;border-radius:13px}.lesson-content ul,.lesson-content ol{display:grid;gap:9px;margin:10px 0 22px;padding:0;list-style:none}.lesson-content li{position:relative;padding:10px 14px 10px 38px;color:#3d4b60;background:#f8fafc;border:1px solid #edf1f5;border-radius:10px}.lesson-content ul li::before{content:"✓";position:absolute;left:14px;top:10px;color:#059669;font-weight:900}.lesson-content ol{counter-reset:lesson-list}.lesson-content ol li{counter-increment:lesson-list}.lesson-content ol li::before{content:counter(lesson-list);position:absolute;left:14px;color:#2563eb;font-weight:900}.lesson-content strong{color:#172033}.lesson-content blockquote{margin:20px 0;padding:17px 20px;color:#475569;background:#fffbeb;border-left:4px solid #f59e0b;border-radius:0 10px 10px 0}.lesson-content table{width:100%;margin:18px 0;border-collapse:collapse}.lesson-content th,.lesson-content td{padding:11px;border:1px solid #e2e8f0}.lesson-content th{background:#f8fafc}
.lesson-sidebar-card{position:sticky;top:100px;padding:23px;background:#fff;border:1px solid #e3e8f0;border-radius:17px;box-shadow:0 10px 30px rgba(15,23,42,.045)}.lesson-sidebar-card h3{margin:6px 0 18px}.lesson-steps{display:grid;gap:0;margin:0;padding:0;list-style:none}.lesson-steps li{position:relative;display:flex;gap:11px;padding:0 0 21px}.lesson-steps li:not(:last-child)::after{content:"";position:absolute;left:15px;top:31px;bottom:0;width:1px;background:#dbe3ed}.lesson-steps li>span{width:31px;height:31px;display:grid;place-items:center;color:#64748b;background:#f1f5f9;border-radius:50%;font-size:.7rem;font-weight:900;flex:0 0 auto}.lesson-steps li.done>span{color:#fff;background:#10b981}.lesson-steps li>div{display:flex;flex-direction:column;padding-top:1px}.lesson-steps strong{color:#334155;font-size:.78rem}.lesson-steps small{margin:2px 0 0;font-size:.66rem}.lesson-actions.vertical{display:grid;gap:9px;margin:3px 0 0}.lesson-actions.vertical form,.lesson-actions.vertical .btn{width:100%}.lesson-actions.vertical .btn{font-size:.78rem}
.reader-shell{padding:14px;color:#fff;background:#111827;border-radius:16px;box-shadow:var(--shadow)}.reader-toolbar,.reader-controls{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:10px}.reader-frame{height:72vh;overflow:hidden;background:#0b1020;border-radius:12px}.reader-frame iframe{width:100%;height:100%;border:0;background:#fff}#readerPage{max-width:100px}#readerProgress{width:220px}
@media(max-width:1050px){.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-layout{grid-template-columns:1fr}.lesson-sidebar-card{position:static}.lesson-actions.vertical{grid-template-columns:repeat(3,minmax(0,1fr))}.lesson-steps{grid-template-columns:repeat(3,1fr);gap:15px}.lesson-steps li::after{display:none!important}}
@media(max-width:760px){.course-grid{grid-template-columns:1fr}.enroll-hero{grid-template-columns:1fr;min-height:0}.enroll-visual{min-height:220px}.course-detail-hero{align-items:flex-start}.course-emblem{width:76px;height:76px;border-radius:20px;font-size:1.4rem}.course-summary{gap:15px}.module-card>header{flex-wrap:wrap}.module-card>header>.badge{margin-left:57px}.lesson-row{align-items:flex-start;flex-wrap:wrap}.lesson-row .btn,.lesson-row>.badge{margin-left:45px}.catalog-head{margin:8px auto 28px}}
@media(max-width:620px){.lesson-hero{display:block}.lesson-hero-icon{display:none}.reading-label{padding:14px 18px}.lesson-content{padding:24px 19px}.lesson-actions.vertical,.lesson-steps{grid-template-columns:1fr}.lesson-steps li:not(:last-child)::after{display:block!important}.lesson-content li{padding-right:10px}}
@media(max-width:520px){.course-detail-hero{display:block}.course-emblem{display:none}.course-summary{justify-content:space-between}.enroll-copy{padding:28px 22px}.enroll-button{width:100%}.reader-toolbar,.reader-controls{align-items:stretch}}