:root{--bg:#f5f8fc;--surface:#fff;--surface-2:#eaf1f8;--ink:#0b1d33;--muted:#4a5b70;--brand:#0d7a72;--brand-hover:#0a655e;--brand-ink:#fff;--accent:#ff7a59;--line:#d6e1ec;--danger:#b42318;--good:#067647;--deep:#0b1d33;--deep-ink:#eef5fb;--radius:16px;--shadow:0 1px 2px #0b1d330f, 0 8px 24px #0b1d330f;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#07121f;--surface:#0e1d30;--surface-2:#132840;--ink:#e8f0f8;--muted:#a7b7c9;--brand:#3fd1c2;--brand-hover:#67ddd0;--brand-ink:#04151f;--accent:#ff9b80;--line:#22395a;--danger:#ff8a7a;--good:#5fd39a;--deep:#0a1828;--deep-ink:#eef5fb;--shadow:0 1px 2px #0000004d, 0 8px 24px #00000040;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--ink);margin:0;font-family:ui-sans-serif,-apple-system,Segoe UI,Roboto,Helvetica 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var(--line);border-radius:14px;align-items:flex-start;gap:16px;padding:16px 18px;display:flex}.lesson-num{background:var(--surface-2);width:36px;height:36px;color:var(--brand);border-radius:10px;flex:none;place-items:center;font-weight:850;display:grid}.lesson-item h3{margin:0 0 4px;font-size:1.05rem}.lesson-item p{color:var(--muted);margin:0;font-size:.95rem}.lesson-item a{color:var(--ink);text-decoration:none}.lesson-item a:hover{color:var(--brand)}.price-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;max-width:820px;margin:0 auto;display:grid}@media (max-width:720px){.price-grid{grid-template-columns:1fr}}.price-card{flex-direction:column;display:flex;position:relative}.price-card.best{border:2px solid var(--brand)}.price-card .tag{background:var(--brand);color:var(--brand-ink);border-radius:999px;padding:4px 12px;font-size:.78rem;font-weight:800;position:absolute;top:-13px;left:24px}.price{letter-spacing:-.03em;margin:12px 0 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