.book-product[data-astro-cid-vyt6clzo]{--book-orange:#f79633;--book-bg:#0b0b0b;--book-panel:#151515;--book-line:#ffffff1f;color:#111}.book-subnav[data-astro-cid-vyt6clzo]{z-index:18;backdrop-filter:blur(16px);background:#0b0b0bf5;border-bottom:1px solid #ffffff1a;position:sticky;top:78px}.book-subnav-inner[data-astro-cid-vyt6clzo]{align-items:center;gap:26px;min-height:66px;display:flex}.books-brand[data-astro-cid-vyt6clzo]{color:#fff;white-space:nowrap;align-items:center;gap:9px;line-height:.88;text-decoration:none;display:inline-flex}.books-brand[data-astro-cid-vyt6clzo] svg[data-astro-cid-vyt6clzo]{width:42px;height:36px}.books-brand[data-astro-cid-vyt6clzo] span[data-astro-cid-vyt6clzo]{font-size:.9rem;font-weight:500;display:grid}.books-brand[data-astro-cid-vyt6clzo] strong[data-astro-cid-vyt6clzo]{font-size:1.14rem}.book-subnav-links[data-astro-cid-vyt6clzo]{gap:21px;margin-left:auto;display:flex}.book-subnav-links[data-astro-cid-vyt6clzo] a[data-astro-cid-vyt6clzo]{color:#ddd;font-size:.88rem;font-weight:760;text-decoration:none}.book-subnav-links[data-astro-cid-vyt6clzo] a[data-astro-cid-vyt6clzo]:hover{color:var(--book-orange)}.book-subnav-cta[data-astro-cid-vyt6clzo]{color:#111;background:var(--book-orange);border-radius:999px;padding:11px 17px;font-size:.86rem;font-weight:900;text-decoration:none}.book-hero[data-astro-cid-vyt6clzo]{color:#fff;background:radial-gradient(circle at 76% 30%,#f7963329,#0000 29%),linear-gradient(135deg,#070707 0%,#111 62%,#090909 100%);padding:clamp(54px,7vw,92px) 0 72px;position:relative;overflow:hidden}.book-hero[data-astro-cid-vyt6clzo]:before{content:"";opacity:.18;background-image:linear-gradient(#ffffff09 1px,#0000 1px),linear-gradient(90deg,#ffffff09 1px,#0000 1px);background-size:44px 44px;position:absolute;inset:0}.book-glow[data-astro-cid-vyt6clzo]{filter:blur(30px);pointer-events:none;border-radius:50%;position:absolute}.book-glow-a[data-astro-cid-vyt6clzo]{background:#f7963338;width:390px;height:390px;bottom:-200px;left:-180px}.book-glow-b[data-astro-cid-vyt6clzo]{background:#f7963326;width:260px;height:260px;top:-80px;right:-80px}.book-hero-grid[data-astro-cid-vyt6clzo]{z-index:1;grid-template-columns:minmax(320px,.78fr) minmax(0,1.22fr);align-items:center;gap:clamp(42px,7vw,84px);display:grid;position:relative}.book-cover-zone[data-astro-cid-vyt6clzo]{place-items:center;min-width:0;display:grid}.book-cover-stage[data-astro-cid-vyt6clzo]{perspective:1200px;width:min(100%,520px);position:relative}.book-cover-stage[data-astro-cid-vyt6clzo] img[data-astro-cid-vyt6clzo]{border-radius:18px;width:100%;height:auto;display:block;transform:rotateY(-8deg)rotateX(1deg);box-shadow:0 36px 80px #0009,0 0 54px #f7963326}.book-cover-stage[data-astro-cid-vyt6clzo]:after{content:"";pointer-events:none;border:1px solid #f796338c;border-radius:20px;position:absolute;inset:3% -1% 3% 3%;transform:translateZ(-1px)}.book-cover-shadow[data-astro-cid-vyt6clzo]{filter:blur(28px);background:#f7963347;border-radius:50%;height:14%;position:absolute;bottom:-7%;left:10%;right:4%}.book-breadcrumb[data-astro-cid-vyt6clzo]{color:#969696;flex-wrap:wrap;gap:8px;margin-bottom:24px;font-size:.78rem;display:flex}.book-breadcrumb[data-astro-cid-vyt6clzo] a[data-astro-cid-vyt6clzo]{color:#c7c7c7;text-decoration:none}.book-breadcrumb[data-astro-cid-vyt6clzo] strong[data-astro-cid-vyt6clzo]{color:#fff}.book-kicker[data-astro-cid-vyt6clzo],.section-kicker[data-astro-cid-vyt6clzo]{color:var(--book-orange);letter-spacing:.12em;text-transform:uppercase;margin:0 0 12px;font-size:.76rem;font-weight:950}.book-hero[data-astro-cid-vyt6clzo] h1[data-astro-cid-vyt6clzo]{color:#fff;letter-spacing:-.065em;max-width:850px;margin:0;font-size:clamp(3.4rem,7vw,6.7rem);line-height:.91}.book-subtitle[data-astro-cid-vyt6clzo]{color:#f3f3f3;max-width:760px;margin:20px 0 8px;font-size:clamp(1.25rem,2.2vw,1.7rem);font-weight:760;line-height:1.18}.book-author[data-astro-cid-vyt6clzo]{color:#aaa;margin:0 0 20px}.book-author[data-astro-cid-vyt6clzo] strong[data-astro-cid-vyt6clzo]{color:#fff}.book-description[data-astro-cid-vyt6clzo]{color:#d7d7d7;max-width:780px;font-size:1.06rem}.book-tags[data-astro-cid-vyt6clzo]{flex-wrap:wrap;gap:9px;margin:24px 0 28px;display:flex}.book-tags[data-astro-cid-vyt6clzo] span[data-astro-cid-vyt6clzo]{color:#f0f0f0;background:#f796330e;border:1px solid #f7963370;border-radius:999px;padding:8px 12px;font-size:.78rem;font-weight:800}.retailers[data-astro-cid-vyt6clzo]{gap:12px;display:grid}.retailers-hero[data-astro-cid-vyt6clzo]{grid-template-columns:repeat(3,minmax(0,1fr));max-width:860px}.retailer[data-astro-cid-vyt6clzo]{background:#ffffff0a;border:1px solid #ffffff29;border-radius:17px;flex-direction:column;justify-content:center;align-items:stretch;gap:8px;min-width:0;padding:10px;text-decoration:none;transition:transform .2s,border-color .2s,background .2s;display:flex}.retailer[data-astro-cid-vyt6clzo] img[data-astro-cid-vyt6clzo]{object-fit:contain;width:100%;height:64px;display:block}.retailer-active[data-astro-cid-vyt6clzo]:hover{background:#f7963314;border-color:#f79633b3;transform:translateY(-3px)}.retailer[data-astro-cid-vyt6clzo] small[data-astro-cid-vyt6clzo],.retailer[data-astro-cid-vyt6clzo] span[data-astro-cid-vyt6clzo]{color:#bdbdbd;text-align:center;font-size:.72rem}.retailer-disabled[data-astro-cid-vyt6clzo]{opacity:.58;filter:saturate(.45)}.purchase-note[data-astro-cid-vyt6clzo]{color:#8f8f8f;max-width:760px;margin-top:14px;font-size:.76rem}.book-summary[data-astro-cid-vyt6clzo]{background:#0b0b0b;padding:0 0 70px}.summary-shell[data-astro-cid-vyt6clzo]{z-index:2;background:#fff;border-radius:30px;grid-template-columns:1.05fr 1.45fr;gap:34px;margin-top:-2px;padding:clamp(30px,5vw,52px);display:grid;position:relative;box-shadow:0 22px 70px #0000002e}.summary-lead[data-astro-cid-vyt6clzo] h2[data-astro-cid-vyt6clzo],.audience-intro[data-astro-cid-vyt6clzo] h2[data-astro-cid-vyt6clzo],.buy-heading[data-astro-cid-vyt6clzo] h2[data-astro-cid-vyt6clzo],.faq-grid[data-astro-cid-vyt6clzo] h2[data-astro-cid-vyt6clzo],.author-card[data-astro-cid-vyt6clzo] h2[data-astro-cid-vyt6clzo]{letter-spacing:-.055em;font-size:clamp(2rem,4vw,3.4rem);line-height:1}.summary-lead[data-astro-cid-vyt6clzo] p[data-astro-cid-vyt6clzo]:last-child{font-size:1.06rem}.summary-features[data-astro-cid-vyt6clzo]{grid-template-columns:repeat(3,1fr);display:grid}.summary-features[data-astro-cid-vyt6clzo] article[data-astro-cid-vyt6clzo]{border-left:1px solid #e3e3e3;padding:10px 24px}.feature-icon[data-astro-cid-vyt6clzo],.topic-grid[data-astro-cid-vyt6clzo] article[data-astro-cid-vyt6clzo]>span[data-astro-cid-vyt6clzo],.difference-list[data-astro-cid-vyt6clzo] article[data-astro-cid-vyt6clzo]>span[data-astro-cid-vyt6clzo]{color:#111;background:var(--book-orange);border-radius:14px;place-items:center;width:43px;height:43px;margin-bottom:18px;font-weight:950;display:grid}.summary-features[data-astro-cid-vyt6clzo] h3[data-astro-cid-vyt6clzo]{font-size:1.06rem}.summary-features[data-astro-cid-vyt6clzo] p[data-astro-cid-vyt6clzo]{color:#666;margin-bottom:0;font-size:.9rem}.book-dark-section[data-astro-cid-vyt6clzo]{color:#fff;background:#0b0b0b;padding:88px 0}.content-grid[data-astro-cid-vyt6clzo]{grid-template-columns:.72fr 1.28fr;align-items:start;gap:56px;display:grid}.content-intro[data-astro-cid-vyt6clzo]{position:sticky;top:164px}.content-intro[data-astro-cid-vyt6clzo] h2[data-astro-cid-vyt6clzo],.difference-grid[data-astro-cid-vyt6clzo] h2[data-astro-cid-vyt6clzo]{color:#fff;letter-spacing:-.06em;font-size:clamp(2.5rem,5vw,4.5rem);line-height:.97}.content-intro[data-astro-cid-vyt6clzo]>p[data-astro-cid-vyt6clzo]:not(.section-kicker),.difference-grid[data-astro-cid-vyt6clzo]>div[data-astro-cid-vyt6clzo]>p[data-astro-cid-vyt6clzo]:not(.section-kicker){color:#bfbfbf;font-size:1.05rem}.outline-cta[data-astro-cid-vyt6clzo]{border:1px solid var(--book-orange);color:#fff;border-radius:999px;align-items:center;gap:12px;margin-top:18px;padding:12px 16px;font-weight:850;text-decoration:none;display:inline-flex}.topic-grid[data-astro-cid-vyt6clzo]{grid-template-columns:repeat(2,1fr);gap:14px;display:grid}.topic-grid[data-astro-cid-vyt6clzo] article[data-astro-cid-vyt6clzo]{border:1px solid var(--book-line);background:#151515;border-radius:20px;grid-template-columns:48px 1fr;gap:17px;padding:22px;display:grid}.topic-grid[data-astro-cid-vyt6clzo] article[data-astro-cid-vyt6clzo]>span[data-astro-cid-vyt6clzo]{width:42px;height:42px;margin:0}.topic-grid[data-astro-cid-vyt6clzo] h3[data-astro-cid-vyt6clzo]{color:#fff;margin:1px 0 7px;font-size:1.02rem}.topic-grid[data-astro-cid-vyt6clzo] p[data-astro-cid-vyt6clzo]{color:#aaa;margin:0;font-size:.88rem}.book-audience[data-astro-cid-vyt6clzo]{background:#f6f6f4;padding:88px 0}.audience-shell[data-astro-cid-vyt6clzo]{grid-template-columns:.68fr 1.32fr;align-items:start;gap:46px;display:grid}.audience-intro[data-astro-cid-vyt6clzo] p[data-astro-cid-vyt6clzo]:last-child{color:#666}.audience-grid[data-astro-cid-vyt6clzo]{grid-template-columns:repeat(2,1fr);gap:14px;display:grid}.audience-grid[data-astro-cid-vyt6clzo] article[data-astro-cid-vyt6clzo]{background:#fff;border:1px solid #e1e1de;border-radius:22px;min-height:190px;padding:24px}.audience-number[data-astro-cid-vyt6clzo]{color:var(--book-orange);letter-spacing:.1em;margin-bottom:34px;font-size:.78rem;font-weight:950;display:inline-block}.audience-grid[data-astro-cid-vyt6clzo] h3[data-astro-cid-vyt6clzo]{font-size:1.12rem}.audience-grid[data-astro-cid-vyt6clzo] p[data-astro-cid-vyt6clzo]{color:#666;margin-bottom:0}.book-difference[data-astro-cid-vyt6clzo]{color:#fff;background:linear-gradient(120deg,#121212,#050505);padding:88px 0;position:relative;overflow:hidden}.book-difference[data-astro-cid-vyt6clzo]:after{content:"✦";color:#f7963312;font-size:28rem;line-height:1;position:absolute;bottom:-155px;right:-30px}.difference-grid[data-astro-cid-vyt6clzo]{z-index:1;grid-template-columns:.7fr 1.3fr;gap:56px;display:grid;position:relative}.difference-list[data-astro-cid-vyt6clzo]{border:1px solid var(--book-line);background:#ffffff08;border-radius:26px;grid-template-columns:repeat(2,1fr);display:grid;overflow:hidden}.difference-list[data-astro-cid-vyt6clzo] article[data-astro-cid-vyt6clzo]{border-right:1px solid var(--book-line);border-bottom:1px solid var(--book-line);padding:27px}.difference-list[data-astro-cid-vyt6clzo] article[data-astro-cid-vyt6clzo]:nth-child(2n){border-right:0}.difference-list[data-astro-cid-vyt6clzo] article[data-astro-cid-vyt6clzo]:nth-last-child(-n+2){border-bottom:0}.difference-list[data-astro-cid-vyt6clzo] h3[data-astro-cid-vyt6clzo]{color:#fff;font-size:1.02rem}.difference-list[data-astro-cid-vyt6clzo] p[data-astro-cid-vyt6clzo]{color:#aaa;margin-bottom:0;font-size:.88rem}.book-author-section[data-astro-cid-vyt6clzo]{background:#fff;padding:88px 0}.author-card[data-astro-cid-vyt6clzo]{background:linear-gradient(135deg,#fff,#fff8ef);border:1px solid #e8e8e4;border-radius:30px;grid-template-columns:180px 1fr;align-items:center;gap:34px;padding:clamp(28px,5vw,50px);display:grid}.author-visual[data-astro-cid-vyt6clzo]{aspect-ratio:1;width:150px;position:relative}.author-photo[data-astro-cid-vyt6clzo],.author-mark[data-astro-cid-vyt6clzo]{border-radius:50%;width:150px;height:150px}.author-photo[data-astro-cid-vyt6clzo]{object-fit:cover;object-position:center;background:#f3f3f1;border:6px solid #fff;display:block;box-shadow:0 18px 40px #00000029,0 0 0 1px 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.retailer-active[data-astro-cid-vyt6clzo] small[data-astro-cid-vyt6clzo]{color:#d0d0d0}.book-faq[data-astro-cid-vyt6clzo]{background:#fff;padding:88px 0}.faq-grid[data-astro-cid-vyt6clzo]{grid-template-columns:.62fr 1.38fr;align-items:start;gap:54px;display:grid}.faq-grid[data-astro-cid-vyt6clzo]>div[data-astro-cid-vyt6clzo]:first-child>p[data-astro-cid-vyt6clzo]:last-child{color:#666}.faq-list[data-astro-cid-vyt6clzo]{border-top:1px solid #ddd}.faq-list[data-astro-cid-vyt6clzo] details[data-astro-cid-vyt6clzo]{border-bottom:1px solid #ddd}.faq-list[data-astro-cid-vyt6clzo] summary[data-astro-cid-vyt6clzo]{cursor:pointer;justify-content:space-between;align-items:center;gap:20px;padding:20px 0;font-weight:850;list-style:none;display:flex}.faq-list[data-astro-cid-vyt6clzo] summary[data-astro-cid-vyt6clzo]::-webkit-details-marker{display:none}.faq-list[data-astro-cid-vyt6clzo] summary[data-astro-cid-vyt6clzo] span[data-astro-cid-vyt6clzo]{color:var(--book-orange);font-size:1.35rem;transition:transform .2s}.faq-list[data-astro-cid-vyt6clzo] details[data-astro-cid-vyt6clzo][open] summary[data-astro-cid-vyt6clzo] span[data-astro-cid-vyt6clzo]{transform:rotate(45deg)}.faq-list[data-astro-cid-vyt6clzo] details[data-astro-cid-vyt6clzo] p[data-astro-cid-vyt6clzo]{color:#666;max-width:820px;margin:-5px 0 20px}.book-endcap[data-astro-cid-vyt6clzo]{color:#fff;background:#0a0a0a;border-top:1px solid #262626;padding:58px 0}.endcap-inner[data-astro-cid-vyt6clzo]{justify-content:space-between;align-items:center;gap:30px;display:flex}.book-endcap[data-astro-cid-vyt6clzo] h2[data-astro-cid-vyt6clzo]{color:#fff;margin:0;font-size:clamp(2rem,4vw,3.5rem)}.endcap-actions[data-astro-cid-vyt6clzo]{align-items:center;gap:20px;display:flex}.endcap-link[data-astro-cid-vyt6clzo]{color:#ddd;text-decoration-color:var(--book-orange);text-underline-offset:4px;font-weight:800}.mobile-buybar[data-astro-cid-vyt6clzo]{display:none}@media (width<=980px){.book-subnav-links[data-astro-cid-vyt6clzo]{display:none}.book-hero-grid[data-astro-cid-vyt6clzo],.summary-shell[data-astro-cid-vyt6clzo],.content-grid[data-astro-cid-vyt6clzo],.audience-shell[data-astro-cid-vyt6clzo],.difference-grid[data-astro-cid-vyt6clzo],.buy-shell[data-astro-cid-vyt6clzo],.faq-grid[data-astro-cid-vyt6clzo]{grid-template-columns:1fr}.book-cover-stage[data-astro-cid-vyt6clzo]{width:min(74vw,490px)}.content-intro[data-astro-cid-vyt6clzo]{position:static}.summary-features[data-astro-cid-vyt6clzo]{grid-template-columns:repeat(3,1fr)}.buy-shell[data-astro-cid-vyt6clzo],.faq-grid[data-astro-cid-vyt6clzo]{gap:30px}}@media (width<=720px){.book-subnav[data-astro-cid-vyt6clzo]{top:64px}.book-subnav-cta[data-astro-cid-vyt6clzo]{padding:10px 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solid var(--book-line)!important}.difference-list[data-astro-cid-vyt6clzo] article[data-astro-cid-vyt6clzo]:last-child{border-bottom:0!important}.author-card[data-astro-cid-vyt6clzo]{grid-template-columns:1fr}.author-visual[data-astro-cid-vyt6clzo],.author-photo[data-astro-cid-vyt6clzo],.author-mark[data-astro-cid-vyt6clzo]{width:110px;height:110px}.author-mark[data-astro-cid-vyt6clzo]{font-size:2.5rem}.endcap-inner[data-astro-cid-vyt6clzo],.endcap-actions[data-astro-cid-vyt6clzo]{flex-direction:column;align-items:flex-start}.mobile-buybar[data-astro-cid-vyt6clzo]{z-index:30;color:#fff;backdrop-filter:blur(15px);background:#0a0a0af2;border:1px solid #ffffff1f;border-radius:18px;justify-content:space-between;align-items:center;gap:14px;padding:12px 12px 12px 16px;display:flex;position:fixed;bottom:10px;left:10px;right:10px;box-shadow:0 18px 50px #00000059}.mobile-buybar[data-astro-cid-vyt6clzo] div[data-astro-cid-vyt6clzo]{min-width:0}.mobile-buybar[data-astro-cid-vyt6clzo] strong[data-astro-cid-vyt6clzo]{white-space:nowrap;text-overflow:ellipsis;max-width:58vw;font-size:.82rem;display:block;overflow:hidden}.mobile-buybar[data-astro-cid-vyt6clzo] span[data-astro-cid-vyt6clzo]{color:#aaa;font-size:.69rem}.mobile-buybar[data-astro-cid-vyt6clzo] a[data-astro-cid-vyt6clzo]{background:var(--book-orange);color:#111;border-radius:12px;flex:none;padding:11px 15px;font-size:.8rem;font-weight:900;text-decoration:none}}