.book-hero[data-astro-cid-pa3epm24]{background:var(--slate);color:#eef0f1;padding:0}.book-hero-inner[data-astro-cid-pa3epm24]{padding:34px 0 0}.book-top[data-astro-cid-pa3epm24]{display:flex;align-items:center;justify-content:space-between;padding:10px 0 52px}.book-brandmark[data-astro-cid-pa3epm24]{display:flex;align-items:center;gap:13px;text-decoration:none;color:#fff}.book-brandmark[data-astro-cid-pa3epm24] svg[data-astro-cid-pa3epm24]{width:34px;height:38px}.book-brandmark[data-astro-cid-pa3epm24] .bm-name[data-astro-cid-pa3epm24]{font-family:var(--f-head);font-size:22px;letter-spacing:.04em;line-height:1}.hn[data-astro-cid-pa3epm24]{display:flex;gap:30px;font-family:var(--f-sans);font-size:13px;letter-spacing:.04em}.hn[data-astro-cid-pa3epm24] a[data-astro-cid-pa3epm24]{color:#dfe2e3;text-decoration:none;opacity:.85;transition:opacity .15s}.hn[data-astro-cid-pa3epm24] a[data-astro-cid-pa3epm24]:hover{opacity:1}@media(max-width:720px){.hn[data-astro-cid-pa3epm24]{display:none}}.book-grid[data-astro-cid-pa3epm24]{display:grid;grid-template-columns:1fr 380px;gap:72px;align-items:end;padding-bottom:0}@media(max-width:900px){.book-grid[data-astro-cid-pa3epm24]{grid-template-columns:1fr;gap:40px}}.book-copy[data-astro-cid-pa3epm24]{padding-bottom:72px}.book-eyebrow[data-astro-cid-pa3epm24]{font-family:var(--f-sans);font-size:11px;letter-spacing:.26em;text-transform:uppercase;color:#e7dccd;font-weight:600;margin-bottom:18px}.book-h1[data-astro-cid-pa3epm24]{font-family:var(--f-head);font-size:clamp(46px,7.5vw,92px);color:#fff;line-height:.94;max-width:14ch}.book-sub[data-astro-cid-pa3epm24]{font-family:var(--f-edit);font-style:italic;font-size:clamp(18px,2.6vw,25px);line-height:1.45;color:#dfe2e3;margin:24px 0 34px;max-width:46ch}.book-six[data-astro-cid-pa3epm24]{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 34px}.book-six[data-astro-cid-pa3epm24] span[data-astro-cid-pa3epm24]{font-family:var(--f-sans);font-size:12px;letter-spacing:.04em;padding:6px 12px;border:1px solid rgba(255,255,255,.2);border-radius:999px;color:#dfe2e3}.book-form-panel[data-astro-cid-pa3epm24]{background:var(--paper-warm);border-radius:8px 8px 0 0;padding:40px 36px 48px;color:var(--body)}@media(max-width:900px){.book-form-panel[data-astro-cid-pa3epm24]{border-radius:8px;margin-bottom:48px}}.form-k[data-astro-cid-pa3epm24]{font-family:var(--f-sans);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--copper-dk);font-weight:600;margin-bottom:16px;display:block}.form-h[data-astro-cid-pa3epm24]{font-family:var(--f-head);font-size:28px;color:var(--ink);margin-bottom:8px;line-height:1}.form-sub[data-astro-cid-pa3epm24]{font-family:var(--f-edit);font-style:italic;font-size:16px;color:var(--body);margin-bottom:26px;line-height:1.5}.form-group[data-astro-cid-pa3epm24]{display:flex;flex-direction:column;gap:10px;margin-bottom:18px}.form-group[data-astro-cid-pa3epm24] label[data-astro-cid-pa3epm24]{font-family:var(--f-sans);font-size:13px;letter-spacing:.04em;color:var(--muted)}.form-group[data-astro-cid-pa3epm24] input[data-astro-cid-pa3epm24]{font-family:var(--f-sans);font-size:16px;padding:13px 16px;border:1.5px solid var(--line);border-radius:4px;background:#fff;color:var(--ink);transition:border-color .15s;width:100%}.form-group[data-astro-cid-pa3epm24] input[data-astro-cid-pa3epm24]:focus{outline:none;border-color:var(--slate)}.form-submit[data-astro-cid-pa3epm24]{width:100%;padding:17px;font-family:var(--f-sans);font-size:16px;font-weight:600;background:var(--ink);color:#f6f1ea;border:none;border-radius:4px;cursor:pointer;transition:background .15s}.form-submit[data-astro-cid-pa3epm24]:hover{background:#1f1b18}.form-note[data-astro-cid-pa3epm24]{font-family:var(--f-sans);font-size:12px;color:var(--muted);margin-top:12px;line-height:1.5}.form-option-d[data-astro-cid-pa3epm24]{font-family:var(--f-edit);font-style:italic;font-size:14px;color:var(--muted);margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}.body-section[data-astro-cid-pa3epm24]{padding:80px 0}.body-section[data-astro-cid-pa3epm24].warm{background:var(--paper-warm)}.qs-grid[data-astro-cid-pa3epm24]{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:36px}@media(max-width:720px){.qs-grid[data-astro-cid-pa3epm24]{grid-template-columns:1fr}}.q-block[data-astro-cid-pa3epm24]{background:#fff;border:1px solid var(--line);border-radius:8px;padding:26px 28px}.q-block[data-astro-cid-pa3epm24] .q-n[data-astro-cid-pa3epm24]{font-family:var(--f-edit);font-weight:700;font-size:15px;color:var(--copper-dk);margin-bottom:10px}.q-block[data-astro-cid-pa3epm24] p[data-astro-cid-pa3epm24]{font-size:15px;line-height:1.6;color:var(--body)}.method-row[data-astro-cid-pa3epm24]{display:grid;grid-template-columns:repeat(6,1fr);gap:0;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff;margin:32px 0}@media(max-width:760px){.method-row[data-astro-cid-pa3epm24]{grid-template-columns:repeat(3,1fr)}}@media(max-width:480px){.method-row[data-astro-cid-pa3epm24]{grid-template-columns:repeat(2,1fr)}}.method-row[data-astro-cid-pa3epm24] .m-cell[data-astro-cid-pa3epm24]{padding:18px 14px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.method-row[data-astro-cid-pa3epm24] .m-cell[data-astro-cid-pa3epm24] .mc-n[data-astro-cid-pa3epm24]{font-family:var(--f-edit);font-weight:700;font-size:18px;color:var(--copper-dk)}.method-row[data-astro-cid-pa3epm24] .m-cell[data-astro-cid-pa3epm24] .mc-name[data-astro-cid-pa3epm24]{font-family:var(--f-head);font-size:18px;color:var(--ink);margin:4px 0;line-height:1}.math-block[data-astro-cid-pa3epm24]{background:var(--mist-2);border:1px solid var(--line);border-radius:8px;padding:32px;margin:24px 0;display:grid;grid-template-columns:auto 1fr;gap:32px;align-items:center}@media(max-width:600px){.math-block[data-astro-cid-pa3epm24]{grid-template-columns:1fr;gap:20px}}.math-block[data-astro-cid-pa3epm24] .big-n[data-astro-cid-pa3epm24]{font-family:var(--f-edit);font-weight:700;font-size:clamp(52px,9vw,80px);color:var(--ink);line-height:1}.math-block[data-astro-cid-pa3epm24] p[data-astro-cid-pa3epm24]{font-size:16px;line-height:1.65}.math-block[data-astro-cid-pa3epm24] .math-note[data-astro-cid-pa3epm24]{font-family:var(--f-sans);font-size:12px;color:var(--muted);margin-top:10px}.proof-row[data-astro-cid-pa3epm24]{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin:32px 0}@media(max-width:760px){.proof-row[data-astro-cid-pa3epm24]{grid-template-columns:1fr}}.p-card[data-astro-cid-pa3epm24]{border:1px solid var(--line);border-radius:8px;padding:26px;background:#fff}.p-card[data-astro-cid-pa3epm24] .p-stat[data-astro-cid-pa3epm24]{font-family:var(--f-edit);font-weight:700;font-size:28px;color:var(--ink);margin-bottom:10px;line-height:1.1}.p-card[data-astro-cid-pa3epm24] p[data-astro-cid-pa3epm24]{font-size:14px;line-height:1.6;color:var(--body)}.cta-block[data-astro-cid-pa3epm24]{background:var(--ink);color:#e9e4dd;border-radius:8px;padding:40px;text-align:center;margin-top:48px}.cta-block[data-astro-cid-pa3epm24] h2[data-astro-cid-pa3epm24]{color:#fff;font-size:clamp(32px,5vw,52px);margin-bottom:14px}.cta-block[data-astro-cid-pa3epm24] p[data-astro-cid-pa3epm24]{font-family:var(--f-edit);font-style:italic;font-size:18px;color:#c9c3ba;margin-bottom:28px}.cta-block[data-astro-cid-pa3epm24] .cta-row[data-astro-cid-pa3epm24]{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}.excerpt-section[data-astro-cid-pa3epm24]{padding:84px 0}.excerpt-wrap[data-astro-cid-pa3epm24]{max-width:640px;margin:0 auto}.excerpt-wrap[data-astro-cid-pa3epm24] .ex-k[data-astro-cid-pa3epm24]{font-family:var(--f-sans);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--copper-dk);font-weight:600;margin-bottom:22px;display:block}.excerpt-lead[data-astro-cid-pa3epm24]{font-family:var(--f-edit);font-style:italic;font-size:clamp(24px,4vw,34px);line-height:1.18;color:var(--ink);margin-bottom:28px}.excerpt-wrap[data-astro-cid-pa3epm24] p[data-astro-cid-pa3epm24]{font-size:17px;line-height:1.75;margin-bottom:18px;color:var(--body)}.excerpt-wrap[data-astro-cid-pa3epm24] p[data-astro-cid-pa3epm24] strong[data-astro-cid-pa3epm24]{color:var(--ink)}.excerpt-pull[data-astro-cid-pa3epm24]{font-family:var(--f-head);font-size:clamp(30px,5vw,46px);color:var(--ink);text-align:center;margin:40px 0 6px;line-height:1;letter-spacing:.01em}.excerpt-attrib[data-astro-cid-pa3epm24]{font-family:var(--f-sans);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);text-align:center;margin-top:30px}