.bk[data-astro-cid-xgpuyi33]{--bg:#ffffff;--bg-alt:#f8fafc;--text:#0c1222;--text-2:#475569;--text-3:#64748b;--border:#e2e8f0;--card-bg:#ffffff;--card-border:#e2e8f0;--accent:#007E8A;--accent-hover:#006670;--accent-dim:rgba(0, 126, 138, .06);--accent-rgb:0, 126, 138;font-family:Open Sans,sans-serif;background:var(--bg);color:var(--text)}.bk-inner[data-astro-cid-xgpuyi33]{max-width:1280px;margin:0 auto;padding:0 1rem}@media (min-width:768px){.bk-inner[data-astro-cid-xgpuyi33]{padding:0 1.25rem}}@media (min-width:1281px){.bk-inner[data-astro-cid-xgpuyi33]{padding:0 2rem}}.bk-hero[data-astro-cid-xgpuyi33]{background:var(--bg);padding:64px 0}.bk-hero-grid[data-astro-cid-xgpuyi33]{display:grid;grid-template-columns:1fr;gap:40px;align-items:center;max-width:1040px;margin:0 auto}@media (min-width:768px){.bk-hero-grid[data-astro-cid-xgpuyi33]{grid-template-columns:1fr 280px;gap:56px}}.bk-hero-media[data-astro-cid-xgpuyi33]{display:flex;justify-content:center;border-radius:12px;overflow:hidden;box-shadow:0 12px 40px -8px #0000002e}.bk-hero-media[data-astro-cid-xgpuyi33] img{width:100%!important;max-width:280px!important;height:auto;display:block;margin:0!important}.bk-hero-copy[data-astro-cid-xgpuyi33]{text-align:center}@media (min-width:768px){.bk-hero-copy[data-astro-cid-xgpuyi33]{text-align:left}}.bk-h1[data-astro-cid-xgpuyi33]{font-family:Montserrat,sans-serif;font-weight:700;font-size:clamp(2.5rem,5vw,3.75rem);line-height:1.08;letter-spacing:-.02em;color:var(--text);margin:0 0 16px}.bk-hero-meta[data-astro-cid-xgpuyi33]{font-size:15px;color:var(--text-3);margin:0 0 24px}.bk-section[data-astro-cid-xgpuyi33]{padding:60px 0}.bk-section-alt[data-astro-cid-xgpuyi33]{background:var(--bg-alt)}.bk-content[data-astro-cid-xgpuyi33]{max-width:800px;margin:0 auto}.bk-body[data-astro-cid-xgpuyi33]{font-size:16px;line-height:1.7;color:var(--text-2);margin:0 0 20px}.bk-link[data-astro-cid-xgpuyi33]{color:var(--accent);text-decoration:underline}.bk-link[data-astro-cid-xgpuyi33]:hover{color:var(--accent-hover)}.bk-h2[data-astro-cid-xgpuyi33]{font-family:Montserrat,sans-serif;font-weight:700;font-size:clamp(2rem,4vw,3rem);line-height:1.12;letter-spacing:-.015em;color:var(--text);margin:0 0 32px;text-align:center}.bk-toc[data-astro-cid-xgpuyi33]{display:flex;flex-direction:column;gap:16px;max-width:900px;margin:0 auto}.bk-chapter[data-astro-cid-xgpuyi33]{background:var(--card-bg);border:1px solid var(--card-border);border-radius:12px;padding:24px;transition:transform .3s,box-shadow .3s}.bk-chapter[data-astro-cid-xgpuyi33]:hover{transform:translateY(-2px);box-shadow:0 4px 16px -4px #00000014}.bk-chapter-title[data-astro-cid-xgpuyi33]{font-family:Montserrat,sans-serif;font-weight:700;font-size:17px;line-height:1.3;color:var(--text);margin:0 0 10px}.bk-chapter-desc[data-astro-cid-xgpuyi33]{font-size:15px;line-height:1.7;color:var(--text-2);margin:0}.bk-cta[data-astro-cid-xgpuyi33]{padding:60px 0 70px;text-align:center;background:var(--bg-alt)}.bk-cta-title[data-astro-cid-xgpuyi33]{font-family:Montserrat,sans-serif;font-weight:600;font-size:clamp(2.5rem,5vw,3.75rem);line-height:1.1;color:var(--text);margin:0 0 32px;letter-spacing:-.025em}.bk-cta-accent[data-astro-cid-xgpuyi33]{color:var(--accent);font-weight:800}.bk-cta-actions[data-astro-cid-xgpuyi33]{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}.bk-btn[data-astro-cid-xgpuyi33]{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:16px;border-radius:8px;padding:13px 30px;transition:all .2s ease;text-decoration:none;cursor:pointer;border:0}.bk-btn-primary[data-astro-cid-xgpuyi33]{background:var(--accent);color:#fff;box-shadow:0 1px 3px #0000001a,0 0 0 1px #0000000a}.bk-btn-primary[data-astro-cid-xgpuyi33]:hover{background:var(--accent-hover);box-shadow:0 4px 12px rgba(var(--accent-rgb),.3);transform:translateY(-1px)}.bk-btn-secondary[data-astro-cid-xgpuyi33]{background:0 0;color:var(--accent);box-shadow:inset 0 0 0 1.5px var(--accent)}.bk-btn-secondary[data-astro-cid-xgpuyi33]:hover{background:var(--accent-dim);transform:translateY(-1px)}