@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Source+Serif+4:opsz,wght@8..60,600;8..60,700&display=swap');
:root{--navy:#17104f;--purple:#51105f;--magenta:#bd0044;--red:#e32718;--orange:#f49a00;--ink:#19172a;--muted:#686579;--paper:#f8f7fb;--line:#e7e3ed;--white:#fff;--shadow:0 18px 50px rgba(25,16,79,.10)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font-family:Manrope,Arial,sans-serif;font-size:16px;line-height:1.65}a{color:var(--purple);text-decoration:none}h1,h2,h3{font-family:'Source Serif 4',Georgia,serif;line-height:1.08;margin:0 0 18px}h1{font-size:clamp(2.5rem,5vw,5.4rem)}h2{font-size:clamp(2rem,3.6vw,3.5rem)}h3{font-size:1.45rem}p{margin:0 0 18px}.brand{font-weight:500;font-size:1.35rem;color:var(--navy);letter-spacing:-.04em}.brand strong{font-weight:800}.brand:before{content:'';display:inline-block;width:18px;height:18px;margin-right:9px;background:linear-gradient(135deg,var(--orange),var(--red),var(--magenta),var(--navy));clip-path:polygon(25% 0,75% 0,100% 50%,75% 100%,25% 100%,0 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a{margin-left:12px}.notice{background:#fff5e1;padding:14px;border-radius:8px;font-size:.88rem}@media(max-width:900px){.site-header{height:68px}.menu-toggle{display:block}.site-header nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;padding:20px;flex-direction:column;align-items:flex-start;box-shadow:var(--shadow)}.site-header nav.open{display:flex}.hero,.course-hero,.auth-wrap,.two-cols{grid-template-columns:1fr}.hero{padding-top:60px}.hero-card{margin-top:10px}.course-grid,.learning-grid,.benefits,.stats,.admin-actions{grid-template-columns:1fr}.section-head{display:block}.section-head p{margin-top:15px}.classroom{grid-template-columns:1fr}.class-nav{border-right:0}.lesson-content{padding:38px 22px}.inline-panel{grid-template-columns:1fr}.split{grid-template-columns:1fr}.admin-top{align-items:flex-start;gap:15px}.course-hero aside{margin-top:10px}footer{grid-template-columns:1fr}.lesson-admin{grid-template-columns:1fr}.auth-copy{min-height:310px}.course-body p{min-height:0}}