.practice-bridge[data-astro-cid-ly5lsifk]{display:grid;gap:14px;border:1px solid #d8dee8;border-radius:8px;padding:15px;background:#fff;color:#111827;box-shadow:var(--shadow-sm)}.practice-bridge[data-astro-cid-ly5lsifk][data-complete]{border-color:#9acaa8;background:#fbfffc}.practice-bridge__header[data-astro-cid-ly5lsifk]{display:flex;justify-content:space-between;gap:12px;align-items:start}.practice-bridge__header[data-astro-cid-ly5lsifk] p[data-astro-cid-ly5lsifk]{margin:0 0 4px;color:#667085;font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.practice-bridge[data-astro-cid-ly5lsifk] h2[data-astro-cid-ly5lsifk]{margin:0;color:#111827;font-family:var(--font-content-sans);font-size:17px;line-height:1.25;letter-spacing:0}.practice-bridge__header[data-astro-cid-ly5lsifk] span[data-astro-cid-ly5lsifk]{flex:0 0 auto;border:1px solid #d8dee8;border-radius:999px;padding:4px 9px;color:#475569;background:#f8fafc;font-size:11px;font-weight:800;line-height:1.2}.practice-bridge__hook[data-astro-cid-ly5lsifk]{margin:0;color:#35465a;font-size:13px;line-height:1.6}.practice-bridge__actions[data-astro-cid-ly5lsifk]{display:grid;gap:8px}.practice-bridge__button[data-astro-cid-ly5lsifk],.practice-bridge[data-astro-cid-ly5lsifk] button[data-astro-cid-ly5lsifk]{display:inline-flex;align-items:center;justify-content:center;min-height:36px;border:1px solid #cfd8e3;border-radius:7px;padding:8px 10px;color:#174c8f;background:#fff;font:inherit;font-size:13px;font-weight:800;text-align:center;text-decoration:none;cursor:pointer}.practice-bridge__button[data-astro-cid-ly5lsifk]:hover,.practice-bridge[data-astro-cid-ly5lsifk] button[data-astro-cid-ly5lsifk]:hover{border-color:#8eb4f0;background:#f5f9ff;text-decoration:none}.practice-bridge__button--primary[data-astro-cid-ly5lsifk],.practice-bridge[data-astro-cid-ly5lsifk] button[data-astro-cid-ly5lsifk][aria-pressed=true]{border-color:#174c8f;color:#fff;background:#174c8f}.practice-bridge__button--primary[data-astro-cid-ly5lsifk]:hover,.practice-bridge[data-astro-cid-ly5lsifk] button[data-astro-cid-ly5lsifk][aria-pressed=true]:hover{border-color:#123d73;color:#fff;background:#123d73}@media (max-width: 620px){.practice-bridge__header[data-astro-cid-ly5lsifk]{display:grid}.practice-bridge__header[data-astro-cid-ly5lsifk] span[data-astro-cid-ly5lsifk]{justify-self:start}}.lesson-page[data-astro-cid-fqrz7nw7]{width:min(1500px,calc(100% - 32px));margin:0 auto;padding:84px 0 70px}.lesson-header[data-astro-cid-fqrz7nw7]{max-width:960px;margin-bottom:26px}.section-kicker[data-astro-cid-fqrz7nw7]{margin:0 0 8px;color:#526071;font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.lesson-header[data-astro-cid-fqrz7nw7] h1[data-astro-cid-fqrz7nw7]{margin:0;color:var(--fg);font-family:var(--font-content-sans);font-size:clamp(32px,4.6vw,58px);line-height:1.06;letter-spacing:0}.lesson-description[data-astro-cid-fqrz7nw7]{max-width:82ch;margin:14px 0 0;color:var(--muted);font-size:15px;line-height:1.7}.chip-row[data-astro-cid-fqrz7nw7],.tag-row[data-astro-cid-fqrz7nw7]{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.chip-lite[data-astro-cid-fqrz7nw7],.tag-row[data-astro-cid-fqrz7nw7] span[data-astro-cid-fqrz7nw7]{display:inline-flex;align-items:center;border:1px solid var(--chip-border);border-radius:999px;padding:4px 10px;background:#fff;color:#475569;font-size:12px;font-weight:650;line-height:1.3}.tag-row[data-astro-cid-fqrz7nw7]{margin-top:10px}.tag-row[data-astro-cid-fqrz7nw7] span[data-astro-cid-fqrz7nw7]{background:#f8fafc;color:#526071;font-weight:600}.lesson-layout[data-astro-cid-fqrz7nw7]{display:grid;grid-template-columns:260px minmax(0,1fr) 270px;gap:18px;align-items:start}.lesson-rail[data-astro-cid-fqrz7nw7]{position:sticky;top:76px;display:grid;gap:12px;min-width:0}.rail-card[data-astro-cid-fqrz7nw7],.lesson-main[data-astro-cid-fqrz7nw7]{border:1px solid var(--border);border-radius:8px;background:#fff;color:#111;box-shadow:var(--shadow-sm)}.rail-card[data-astro-cid-fqrz7nw7]{padding:15px}.rail-card[data-astro-cid-fqrz7nw7] h2[data-astro-cid-fqrz7nw7]{margin:0 0 10px;color:#111827;font-family:var(--font-content-sans);font-size:14px;font-weight:800;letter-spacing:0}.rail-card[data-astro-cid-fqrz7nw7] dl[data-astro-cid-fqrz7nw7]{display:grid;gap:11px;margin:0}.rail-card[data-astro-cid-fqrz7nw7] dt[data-astro-cid-fqrz7nw7]{color:#667085;font-size:11px;font-weight:800;letter-spacing:.04em;text-transform:uppercase}.rail-card[data-astro-cid-fqrz7nw7] dd[data-astro-cid-fqrz7nw7]{margin:2px 0 0;color:#1f2937;font-size:13px;line-height:1.45}.rail-list[data-astro-cid-fqrz7nw7]{display:grid;gap:7px;margin:0;padding-left:17px}.rail-list[data-astro-cid-fqrz7nw7] li[data-astro-cid-fqrz7nw7],.toc-card[data-astro-cid-fqrz7nw7] li[data-astro-cid-fqrz7nw7]{color:#64748b;font-size:12px;line-height:1.45}.toc-card[data-astro-cid-fqrz7nw7] ol[data-astro-cid-fqrz7nw7]{display:grid;gap:7px;margin:0;padding-left:18px}.toc-card[data-astro-cid-fqrz7nw7] li[data-astro-cid-fqrz7nw7].depth-3{margin-left:10px}.rail-card[data-astro-cid-fqrz7nw7] a[data-astro-cid-fqrz7nw7]{color:#06c;text-decoration:underline;text-underline-offset:2px}.rail-actions[data-astro-cid-fqrz7nw7]{display:grid;gap:8px}.rail-action[data-astro-cid-fqrz7nw7]{display:flex;align-items:center;justify-content:center;min-height:36px;border:1px solid #cfd8e3;border-radius:7px;padding:8px 10px;color:#174c8f!important;background:#fff;font-size:13px;font-weight:800;text-align:center;text-decoration:none!important}.rail-action[data-astro-cid-fqrz7nw7]:hover{border-color:#8eb4f0;background:#f5f9ff}.rail-action--primary[data-astro-cid-fqrz7nw7]{border-color:#174c8f;color:#fff!important;background:#174c8f}.rail-action--primary[data-astro-cid-fqrz7nw7]:hover{border-color:#123d73;background:#123d73}.lesson-main[data-astro-cid-fqrz7nw7]{min-width:0;padding:24px 40px 34px}.prose[data-astro-cid-fqrz7nw7]{color:#111;font-family:var(--font-content-sans);font-size:13px;line-height:1.8;letter-spacing:normal;word-spacing:normal}.prose[data-astro-cid-fqrz7nw7] h1,.prose[data-astro-cid-fqrz7nw7] h2,.prose[data-astro-cid-fqrz7nw7] h3,.prose[data-astro-cid-fqrz7nw7] h4,.prose[data-astro-cid-fqrz7nw7] h5{scroll-margin-top:74px;color:#000;font-family:var(--font-content-sans);font-weight:700;line-height:1.5;letter-spacing:normal}.prose[data-astro-cid-fqrz7nw7] h2{margin:10px 0;font-size:21px}.prose[data-astro-cid-fqrz7nw7] h3{margin:10px 0;font-size:16px}.prose[data-astro-cid-fqrz7nw7] h4{margin:10px 0;font-size:14px}.prose[data-astro-cid-fqrz7nw7] p{margin:10px auto;font-size:13px;line-height:1.8}.prose[data-astro-cid-fqrz7nw7] ul,.prose[data-astro-cid-fqrz7nw7] ol{margin:10px auto 10px 2.5rem;padding-left:0;font-size:13px;line-height:1.8}.prose[data-astro-cid-fqrz7nw7] a{color:#06c;text-decoration:underline}.prose[data-astro-cid-fqrz7nw7] blockquote{margin:10px 0;padding:8px 12px;border-left:3px solid #8eb4f0;background:#f5f9ff;color:#2a2a2a}.prose[data-astro-cid-fqrz7nw7] img{display:block;max-width:100%;height:auto;margin:10px auto;border:1px solid #e5e7eb;border-radius:3px}.prose[data-astro-cid-fqrz7nw7] pre,.prose[data-astro-cid-fqrz7nw7] pre span{color:var(--shiki-light)!important;background:#f6f8fa!important;font-style:var(--shiki-light-font-style)!important;font-weight:var(--shiki-light-font-weight)!important}.prose[data-astro-cid-fqrz7nw7] pre{overflow:auto;margin:10px 0;border:1px solid #e5e7eb;border-radius:4px;padding:10px;font-size:12.5px;line-height:1.5}.prose[data-astro-cid-fqrz7nw7] :not(pre)>code{border:1px solid #e1e4e8;border-radius:3px;padding:1px 4px;background:#f0f2f5;color:#c7254e}.prose[data-astro-cid-fqrz7nw7] table{width:100%;border-collapse:collapse;font-size:13px;margin:10px 0}.prose[data-astro-cid-fqrz7nw7] th,.prose[data-astro-cid-fqrz7nw7] td{border:1px solid #e5e7eb;padding:6px 8px;text-align:left}.prose[data-astro-cid-fqrz7nw7] th{background:#f8fafc;font-weight:700}.lesson-nav[data-astro-cid-fqrz7nw7]{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:30px;border-top:1px solid #e5e7eb;padding-top:18px}.lesson-nav[data-astro-cid-fqrz7nw7] a[data-astro-cid-fqrz7nw7]{display:grid;gap:4px;border:1px solid #d8dee8;border-radius:8px;padding:12px;color:#174c8f;background:#fff;text-decoration:none}.lesson-nav[data-astro-cid-fqrz7nw7] a[data-astro-cid-fqrz7nw7]:hover{border-color:#8eb4f0;background:#f5f9ff;text-decoration:none}.lesson-nav[data-astro-cid-fqrz7nw7] a[data-astro-cid-fqrz7nw7]:last-child{text-align:right}.lesson-nav[data-astro-cid-fqrz7nw7] small[data-astro-cid-fqrz7nw7]{color:#667085;font-size:11px;font-weight:800;letter-spacing:.04em;text-transform:uppercase}@media (max-width: 1180px){.lesson-layout[data-astro-cid-fqrz7nw7]{grid-template-columns:240px minmax(0,1fr)}.lesson-rail--right[data-astro-cid-fqrz7nw7]{position:static;grid-column:1 / -1;grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width: 900px){.lesson-layout[data-astro-cid-fqrz7nw7]{grid-template-columns:1fr}.lesson-rail[data-astro-cid-fqrz7nw7]{position:static}.lesson-rail--right[data-astro-cid-fqrz7nw7]{grid-template-columns:1fr}.lesson-main[data-astro-cid-fqrz7nw7]{padding:20px 16px 24px}}@media (max-width: 680px){.lesson-page[data-astro-cid-fqrz7nw7]{width:min(100% - 18px,1500px);padding-top:62px}.lesson-nav[data-astro-cid-fqrz7nw7]{grid-template-columns:1fr}.lesson-nav[data-astro-cid-fqrz7nw7] a[data-astro-cid-fqrz7nw7]:last-child{text-align:left}}