.eyebrow[data-astro-cid-45hlesip]{margin-bottom:12px;color:var(--gf-accent);font-size:.75rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.lesson-hero[data-astro-cid-45hlesip]{padding:76px 24px 72px;border-bottom:1px solid var(--gf-border);background:radial-gradient(circle at 82% 18%,var(--gf-accent-subtle),transparent 34%),var(--gf-bg)}.lesson-header[data-astro-cid-45hlesip]{max-width:930px}nav[data-astro-cid-45hlesip]{display:flex;gap:9px;margin-bottom:42px;color:var(--gf-text-muted);font-size:.8125rem}nav[data-astro-cid-45hlesip] a[data-astro-cid-45hlesip]{color:var(--gf-text-secondary)}h1[data-astro-cid-45hlesip]{max-width:900px;font-size:clamp(2.8rem,6vw,4.8rem);line-height:1.03;letter-spacing:-.048em}.lede[data-astro-cid-45hlesip]{max-width:830px;margin-top:24px;color:var(--gf-text-secondary);font-size:1.15rem;line-height:1.8}.hero-actions[data-astro-cid-45hlesip]{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.article-layout[data-astro-cid-45hlesip]{display:grid;grid-template-columns:190px minmax(0,820px);gap:72px;justify-content:center;padding:80px 24px 96px}aside[data-astro-cid-45hlesip]{position:sticky;top:88px;align-self:start;display:flex;flex-direction:column;gap:12px}aside[data-astro-cid-45hlesip] strong[data-astro-cid-45hlesip]{margin-bottom:5px;font-size:.8125rem}aside[data-astro-cid-45hlesip] a[data-astro-cid-45hlesip]{color:var(--gf-text-secondary);font-size:.8125rem}.lesson-body[data-astro-cid-45hlesip]{min-width:0}.lesson-body[data-astro-cid-45hlesip] section[data-astro-cid-45hlesip]+section[data-astro-cid-45hlesip]{margin-top:76px;padding-top:76px;border-top:1px solid var(--gf-border)}.lesson-body[data-astro-cid-45hlesip] h2[data-astro-cid-45hlesip],.lesson-cta[data-astro-cid-45hlesip] h2[data-astro-cid-45hlesip]{font-size:clamp(1.9rem,4vw,2.8rem);line-height:1.15;letter-spacing:-.03em}.lesson-body[data-astro-cid-45hlesip] section[data-astro-cid-45hlesip]>p[data-astro-cid-45hlesip]:not(.eyebrow){margin-top:20px;color:var(--gf-text-secondary);font-size:1.045rem;line-height:1.85}.key-points[data-astro-cid-45hlesip],.mistakes[data-astro-cid-45hlesip]{display:grid;gap:12px;margin-top:28px;padding:0;list-style:none}.key-points[data-astro-cid-45hlesip] li[data-astro-cid-45hlesip],.mistakes[data-astro-cid-45hlesip] li[data-astro-cid-45hlesip]{position:relative;padding:14px 18px 14px 46px;border:1px solid var(--gf-border);border-radius:var(--gf-radius-lg);background:var(--gf-bg-card);color:var(--gf-text-secondary)}.key-points[data-astro-cid-45hlesip] li[data-astro-cid-45hlesip]:before{position:absolute;left:18px;content:"✓";color:var(--gf-accent);font-weight:800}.mistakes[data-astro-cid-45hlesip] li[data-astro-cid-45hlesip]:before{position:absolute;left:18px;content:"!";color:#a16207;font-weight:800}.code-grid[data-astro-cid-45hlesip]{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}.code-grid[data-astro-cid-45hlesip] h3[data-astro-cid-45hlesip]{margin-bottom:10px;color:var(--gf-text-secondary);font-size:.8125rem}.code-grid[data-astro-cid-45hlesip] pre[data-astro-cid-45hlesip]{height:100%;min-height:190px}.source-note[data-astro-cid-45hlesip]{padding:28px!important;border:1px solid var(--gf-border)!important;border-radius:var(--gf-radius-xl);background:var(--gf-bg-elevated)}.source-note[data-astro-cid-45hlesip] h2[data-astro-cid-45hlesip]{font-size:1.4rem}.source-note[data-astro-cid-45hlesip] a[data-astro-cid-45hlesip]{display:inline-block;margin-top:18px;font-weight:700}.related[data-astro-cid-45hlesip]>div[data-astro-cid-45hlesip]{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px}.related[data-astro-cid-45hlesip]>div[data-astro-cid-45hlesip]>a[data-astro-cid-45hlesip]{display:flex;flex-direction:column;gap:24px;padding:22px;border:1px solid var(--gf-border);border-radius:var(--gf-radius-lg);background:var(--gf-bg-card);color:var(--gf-text);font-weight:700}.related[data-astro-cid-45hlesip] span[data-astro-cid-45hlesip]{color:var(--gf-accent);font-size:.8125rem}.lesson-cta[data-astro-cid-45hlesip]{padding:84px 24px;text-align:center;background:var(--gf-bg-card);border-top:1px solid var(--gf-border)}.lesson-cta[data-astro-cid-45hlesip] p[data-astro-cid-45hlesip]:not(.eyebrow){max-width:680px;margin:18px auto 28px;color:var(--gf-text-secondary)}@media(max-width:900px){.article-layout[data-astro-cid-45hlesip]{grid-template-columns:1fr;gap:0}aside[data-astro-cid-45hlesip]{display:none}}@media(max-width:700px){.code-grid[data-astro-cid-45hlesip],.related[data-astro-cid-45hlesip]>div[data-astro-cid-45hlesip]{grid-template-columns:1fr}}@media(max-width:640px){.lesson-hero[data-astro-cid-45hlesip]{padding:56px 16px}h1[data-astro-cid-45hlesip]{font-size:clamp(2.55rem,13vw,3.8rem)}.hero-actions[data-astro-cid-45hlesip]{flex-direction:column}.hero-actions[data-astro-cid-45hlesip] .btn[data-astro-cid-45hlesip]{width:100%}.article-layout[data-astro-cid-45hlesip]{padding:64px 16px 72px}.lesson-body[data-astro-cid-45hlesip] section[data-astro-cid-45hlesip]+section[data-astro-cid-45hlesip]{margin-top:56px;padding-top:56px}.lesson-cta[data-astro-cid-45hlesip]{padding:64px 16px}}