:root{color-scheme:dark;--bg:#07070c;--panel:#14141f;--line:#292936;--muted:#a6a7ba;--accent:#ff8450;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:#f5f5fa}*{box-sizing:border-box}body{margin:0}a{color:#ffc18f;text-decoration:none}a:hover{text-decoration:underline}a:focus-visible{outline:3px solid #ffab67;outline-offset:4px;border-radius:5px}img{max-width:100%;height:auto}p{line-height:1.7;color:#c4c4d0}h1,h2,h3{line-height:1.2;overflow-wrap:anywhere}h1{font-size:clamp(30px,5vw,56px);letter-spacing:-.04em;margin:12px 0 20px}h2{font-size:24px;letter-spacing:-.02em}main,.site-header,footer{width:min(1180px,100% - 40px);margin:auto}.site-header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:22px;font-weight:800;letter-spacing:-.03em;flex-shrink:0}.brand small{display:block;color:var(--muted);font-size:11px;font-weight:600;letter-spacing:.02em;margin-top:2px}.site-header nav{display:flex;align-items:center;gap:22px;font-size:13px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;gap:8px;padding:12px 19px;border-radius:12px;background:linear-gradient(105deg,#ff842b,#d32d83);font-weight:750;color:#fff}.button:hover{text-decoration:none;filter:brightness(1.1)}.intro{padding:58px 0 36px;max-width:830px}.intro p{font-size:17px;max-width:760px}.eyebrow{color:#ffbe8d;font-size:11px!important;text-transform:uppercase;letter-spacing:.12em;font-weight:800}.intro .button{margin:8px 0}section{margin-bottom:40px}.catalog-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.catalog-links>a{background:var(--panel);border:1px solid var(--line);padding:18px;border-radius:14px;color:#fff;font-weight:750;overflow-wrap:anywhere}.catalog-links small{display:block;font-size:12px;color:var(--muted);font-weight:500;margin-top:8px}.pills{display:flex;flex-wrap:wrap;gap:9px}.pills a{display:block;padding:10px 14px;background:var(--panel);border:1px solid var(--line);border-radius:24px;font-size:13px;max-width:100%;overflow-wrap:anywhere}.lesson-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.lesson-card{min-width:0;background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden}.lesson-card>a{display:block;color:inherit;height:100%}.lesson-card>a:hover{text-decoration:none;background:#1b1b29}.lesson-card img{display:block;width:100%;aspect-ratio:3/4;object-fit:cover;background:#1d2030}.lesson-art{display:grid;place-items:center;aspect-ratio:3/4;font-size:48px;color:#e2d3ff;background:radial-gradient(at 70% 20%,#463363,transparent),linear-gradient(135deg,#132d39,#1c1938)}.card-copy{padding:14px}.card-copy h2{font-size:16px;margin:11px 0;line-height:1.4}.card-copy p{font-size:12px;line-height:1.55;overflow-wrap:anywhere}.card-copy small{font-size:11px;color:var(--muted)}.tag{display:inline-flex;padding:4px 7px;border-radius:7px;background:#27263d;color:#cdc8ff;font-size:10px;font-weight:700}.tag.premium{background:#40311c;color:#ffdb8f}.notice{border:1px solid var(--line);background:#12121c;padding:24px;border-radius:16px;margin-top:28px;font-size:14px}.notice h2{font-size:20px;margin-top:0}.pagination{display:flex;justify-content:center;gap:22px;align-items:center;flex-wrap:wrap;margin-top:28px;padding:18px;font-size:13px}.pagination span{color:var(--muted)}.breadcrumbs{display:flex;align-items:center;gap:9px;flex-wrap:wrap;font-size:12px;margin-top:24px;color:var(--muted);overflow-wrap:anywhere}.lesson-detail{padding:32px 0;max-width:850px}.lesson-detail h1{font-size:clamp(29px,4vw,46px)}.context{font-size:14px;margin-bottom:24px}.detail-thumb{display:block;width:220px;max-height:320px;object-fit:cover;border-radius:15px;margin:24px 0;border:1px solid var(--line)}.lesson-description{font-size:17px;color:#dadbe6;line-height:1.9;margin:26px 0;overflow-wrap:anywhere}.lesson-detail .button{margin-top:10px}footer{border-top:1px solid var(--line);padding:22px 0 38px;font-size:12px;color:var(--muted)}footer p:last-child{display:flex;flex-wrap:wrap;gap:20px}footer strong{color:#dedee9}@media(max-width:850px){.lesson-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.catalog-links{grid-template-columns:repeat(2,minmax(0,1fr))}.site-header nav{gap:12px}.site-header nav>a:first-child{display:none}}@media(max-width:580px){main,.site-header,footer{width:calc(100% - 28px)}.site-header{padding:17px 0}.brand{font-size:19px}.brand img{width:34px;height:34px}.site-header .button{font-size:11px;min-height:40px;padding:10px 12px}.intro{padding:32px 0 24px}.intro p{font-size:15px}.lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.card-copy{padding:11px}.card-copy h2{font-size:14px}.catalog-links{gap:10px}.catalog-links>a{font-size:14px;padding:15px}.notice{padding:18px}.lesson-description{font-size:16px}.pills a{font-size:12px}h2{font-size:21px}.breadcrumbs{font-size:11px}.brand small{font-size:10px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

/* Educator identity, access guidance and support use the public discovery layout. */
.about-hero h1 span{display:block;font-size:.5em;line-height:1.5;letter-spacing:-.02em;color:#c8b7df;margin-top:8px}.about-hero .about-role{color:#fff;font-weight:650}.about-actions{display:flex;align-items:center;flex-wrap:wrap;gap:18px;font-size:14px;margin-top:22px}.about-section{padding:28px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(130deg,rgba(118,66,178,.07),transparent 65%),var(--panel)}.about-section>p{max-width:880px}.about-section h2{margin-top:0}.about-steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 34px;padding-left:22px;margin:20px 0 0}.about-steps li{padding-left:7px}.about-steps strong{font-size:16px}.about-steps p{margin:8px 0 0;font-size:14px}.about-access{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.about-access article{padding:22px;border:1px solid var(--line);border-radius:15px;background:#0e0e17}.about-access h3{font-size:18px;margin:16px 0 10px}.about-access p{font-size:14px;margin-bottom:0}.about-faq details{border-top:1px solid var(--line);padding:16px 0}.about-faq details:last-child{padding-bottom:0}.about-faq summary{cursor:pointer;font-weight:650;font-size:15px;line-height:1.55}.about-faq details p{font-size:14px;margin:12px 0 0;max-width:850px}.about-faq summary:focus-visible{outline:3px solid #ffab67;outline-offset:5px;border-radius:4px}.about-support{display:flex;align-items:center;justify-content:space-between;gap:24px}.about-support h2{margin:0}.about-support p{margin-bottom:0}.about-support .about-actions{margin-top:0;flex-shrink:0}@media(max-width:650px){.about-section{padding:21px}.about-steps,.about-access{grid-template-columns:1fr}.about-support{align-items:start;flex-direction:column}.about-actions{gap:14px}.site-header{flex-wrap:wrap;row-gap:12px}.site-header nav{margin-left:auto}.about-faq summary{font-size:14px}}