.site-header.kc-header-v33{position:relative;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:24px;max-width:1180px;width:calc(100% - 40px);box-sizing:border-box;margin:0 auto;padding:20px 0;background:transparent;border-bottom:1px solid #d9e2e2}.kc-header-v33 .brand{flex-shrink:0}.site-header.kc-header-v33 .kc-desktop-nav{display:flex;align-items:center;gap:28px}.site-header.kc-header-v33 nav a{display:inline-flex;align-items:center;min-height:44px;padding:4px 0;color:#173b49;font-size:15px;font-weight:650;text-decoration:none}.site-header.kc-header-v33 nav a[aria-current]{color:#086c70;box-shadow:inset 0 -2px #0b7478}.kc-mobile-menu{display:none}.kc-header-v33 a:focus-visible,.kc-mobile-menu summary:focus-visible{outline:3px solid #0b7478;outline-offset:5px}.kc-mobile-menu summary{list-style:none;cursor:pointer;min-height:44px;display:flex;align-items:center;gap:12px;background:#0a2d3d;color:#fff;border-radius:24px;padding:0 18px;font-weight:650}.kc-mobile-menu summary::-webkit-details-marker{display:none}.kc-mobile-menu summary::after{content:'☰';font-size:18px;line-height:1}.kc-mobile-menu[open] summary::after{content:'×';font-size:24px}.site-header.kc-header-v33 .kc-mobile-links{position:absolute;top:calc(100% + 8px);left:0;right:0;display:flex;flex-direction:column;align-items:stretch;gap:0;background:#fffdf8;border:1px solid #d9e2e2;border-radius:16px;box-shadow:0 12px 30px #092b3e22;padding:12px 18px}.site-header.kc-header-v33 .kc-mobile-links a{display:flex!important;padding:10px 12px;min-height:44px;box-sizing:border-box}.site-header.kc-header-v33 .kc-mobile-links a[aria-current]{box-shadow:none;background:#edf5f4;border-radius:8px}.kc-mobile-menu:not([open]) .kc-mobile-links{display:none}.kc-page-outline{display:block!important;margin-top:24px;padding-top:20px;border-top:1px solid #ffffff45}.kc-page-outline strong{display:block;color:#fff;font-size:14px;margin-bottom:12px}.kc-page-outline .kc-outline-links{display:flex;gap:8px 20px;flex-wrap:wrap}.kc-page-outline a{display:inline-block;color:#a0eee6;text-decoration:underline;text-underline-offset:4px;font-size:15px;line-height:1.5;padding:6px 0}.kc-page-outline a:focus-visible{outline:3px solid #a0eee6;outline-offset:4px}.kc-about-hero.listing-hero{padding:36px 40px;margin-top:32px}.kc-about-hero.listing-hero h1{font-size:clamp(2rem,4vw,3.2rem);line-height:1.15;margin:0 0 16px}.kc-about-hero.listing-hero>p:last-child{max-width:760px}.hero-actions{flex-wrap:wrap;row-gap:16px}.hero-actions .kc-choice-link{font-weight:700}.kc-orientation,.comparison-section,.faq-section,.official-sources{scroll-margin-top:24px}@media(max-width:900px){.site-header.kc-header-v33 .kc-desktop-nav{display:none}.kc-mobile-menu{display:block}.site-header.kc-header-v33{gap:14px;padding:16px 0}.kc-about-hero.listing-hero{padding:28px 24px}.kc-page-outline .kc-outline-links{display:grid;grid-template-columns:1fr 1fr;gap:6px 16px}}@media(max-width:420px){.kc-header-v33 .brand{max-width:190px}.kc-mobile-menu summary{padding:0 14px}.kc-page-outline .kc-outline-links{grid-template-columns:1fr}.hero-actions{gap:14px 22px}}


body .hero{min-height:0;gap:36px;padding:42px 48px 48px;grid-template-columns:1.12fr .88fr}body .hero h1{font-size:clamp(38px,4.2vw,56px);line-height:1.08;max-width:650px}body .hero-visual{min-height:340px;transform:scale(.82);transform-origin:center}body .hero-copy>p:not(.eyebrow){font-size:17px;line-height:1.6;margin-top:20px}body .hero-actions{margin-top:22px}body .hero .eyebrow{margin-bottom:18px}body .hero-proof{margin-top:22px}body .app-section{padding:52px 0 56px}body .book-section{padding:52px 24px 56px}body .method-section{padding:48px max(24px,calc((100vw - 1120px)/2));gap:48px}body .content-section{padding:48px 0;gap:42px}body .quality-section{padding:48px max(24px,calc((100vw - 1000px)/2));gap:42px}body .official-sources{padding:44px max(24px,calc((100vw - 1000px)/2));gap:32px}body .listing-hero{padding:34px 40px;margin-top:24px}body .listing-hero h1{font-size:clamp(32px,4vw,48px);line-height:1.1}body .listing-hero>p:last-child{margin-top:18px;line-height:1.6}body .section-heading{margin-bottom:26px}body .section-heading h2,body .method-section h2,body .content-section h2,body .quality-section h2,body .official-sources h2,body .detail-heading h2{font-size:clamp(28px,3.1vw,38px);line-height:1.15}body .section-heading p{font-size:16px;line-height:1.6}body .listing-grid{padding:24px 0 48px;gap:16px}body .listing-card{min-height:0;padding:22px;gap:20px;grid-template-columns:64px minmax(0,1fr)}body .listing-card>img{width:64px;height:64px}body .listing-card h2{font-size:26px;line-height:1.18}body .listing-card h2+p{min-height:0;margin:10px 0 12px}body .listing-card .kc-free-note{margin:0 0 12px;padding:8px 10px}body .listing-card .listing-actions{margin-top:12px}
body .app-card{display:grid;grid-template-columns:48px minmax(0,1fr);grid-template-rows:auto 1fr auto auto;column-gap:14px;row-gap:0;align-items:start;min-height:290px;padding:20px}body .app-card-head{grid-row:1;grid-column:1;margin:0;display:block}body .app-card-head img{width:48px;height:48px;border-radius:12px}body .app-card h3{grid-row:1;grid-column:2;font-size:23px;line-height:1.2;min-height:0;margin:0;align-self:center}body .app-card .app-description{grid-row:2;grid-column:1/-1;font-size:15px;line-height:1.6;margin:14px 0}body .app-card .kc-free-note{grid-row:3;grid-column:1/-1;min-height:56px;margin:0 0 10px;padding:8px 10px;font-size:13px;line-height:1.5}body .app-card .card-actions{grid-row:4;grid-column:1/-1;margin:0;align-self:end;gap:12px}body .app-card .card-actions a{min-height:44px;display:inline-flex;align-items:center}body .app-grid{gap:16px}
body .book-grid:has(.book-bsp){grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}body .book-grid:has(.book-bsp) .book-card{display:grid;grid-template-columns:96px minmax(0,1fr);grid-template-rows:auto;gap:16px;align-items:start;min-height:0;padding:20px;border-radius:20px;box-shadow:0 8px 20px #071f2e0b}body .book-grid:has(.book-bsp) .book-cover-wrap{width:96px;max-width:96px;margin:0;align-self:start;transform:none}body .book-grid:has(.book-bsp) .book-cover-wrap img{width:96px;height:auto;max-width:100%;transform:none}body .book-grid:has(.book-bsp) .book-pages{display:none}body .book-grid:has(.book-bsp) .book-copy{display:flex;flex-direction:column;min-width:0;height:100%}body .book-grid:has(.book-bsp) .book-copy h3{font-size:23px;line-height:1.15;hyphens:auto}body .book-grid:has(.book-bsp) .book-copy .book-description{font-size:15px;line-height:1.6;margin:12px 0 0;flex:1}body .book-grid:has(.book-bsp) .book-copy .kc-book-voucher{min-height:0;padding:8px 10px;margin:12px 0;font-size:13px;line-height:1.5}body .book-grid:has(.book-bsp) .book-copy .kc-book-voucher strong{font-size:13px}body .book-grid:has(.book-bsp) .book-copy .book-actions{margin-top:0;padding-top:0;border-top:0;gap:6px;display:flex;flex-direction:column;align-items:flex-start}body .book-grid:has(.book-bsp) .book-actions a{font-size:13px;min-height:44px;display:inline-flex;align-items:center}body .book-grid:has(.book-bsp) .book-actions .book-link{padding:9px 12px}
body .kc-orientation{padding:30px 28px}body .kc-orientation h2{font-size:clamp(28px,3.1vw,38px);margin-bottom:16px}body .kc-orientation>p{line-height:1.6}body .kc-goal-grid{gap:16px;margin-top:20px}body .kc-goal-card{padding:20px}body .kc-goal-card h3{font-size:24px;line-height:1.2}body .kc-goal-card p{line-height:1.6}body .comparison-section{padding:44px 0}body .faq-section.compact-faq{padding:42px 0 48px}body .faq-section .detail-heading{margin-bottom:20px}body .kc-page-outline{margin-top:18px;padding-top:14px}body .kc-page-outline strong{margin-bottom:8px}body .kc-page-outline .kc-outline-links{gap:4px 18px}body .kc-outline-mobile{display:none}body .kc-author-profile{padding:36px 28px 40px;grid-template-columns:180px minmax(0,1fr);gap:32px}body .kc-author-photo img{width:180px}body .kc-author-copy h2{font-size:32px;margin:8px 0 16px}body .kc-author-copy p:not(.eyebrow){font-size:16px;line-height:1.65;margin-bottom:14px}body .kc-author-links{margin-top:16px}body .kc-access{padding:32px 28px}body .kc-access h2{font-size:32px;margin-bottom:20px}body .kc-access-card{padding:20px}body .preview-section{padding-top:40px;padding-bottom:40px}body .product-cta{padding-top:44px;padding-bottom:44px}
@media(max-width:1100px){body .book-grid:has(.book-bsp){grid-template-columns:1fr}body .book-grid:has(.book-bsp) .book-card{grid-template-columns:112px minmax(0,1fr)}body .book-grid:has(.book-bsp) .book-cover-wrap,body .book-grid:has(.book-bsp) .book-cover-wrap img{width:112px;max-width:112px}body .book-grid:has(.book-bsp) .book-copy .book-actions{flex-direction:row;flex-wrap:wrap;gap:10px 18px}body .hero{grid-template-columns:minmax(0,1fr);padding:36px}body .hero-visual{display:none}}
@media(max-width:700px){body .hero{padding:30px 22px 36px}body .hero h1{font-size:36px;line-height:1.12}body .hero-copy>p:not(.eyebrow){font-size:16px;margin-top:16px}body .hero-actions{flex-direction:row;align-items:center;gap:10px 20px;margin-top:20px}body .hero .trust-row{display:none}body .hero-actions .button,body .hero-actions .text-link{min-height:44px;display:inline-flex;align-items:center}body .hero .eyebrow{margin-bottom:14px}body .app-section{padding:32px 0 36px}body .book-section{padding:32px 16px 36px}body .method-section{padding:32px 22px;gap:28px}body .content-section{padding:32px 0;gap:20px}body .quality-section{padding:32px 22px;gap:22px}body .official-sources{padding:32px 22px;gap:20px}body .listing-hero,body .kc-about-hero.listing-hero{padding:26px 24px;margin-top:16px}body .listing-hero h1{font-size:32px;line-height:1.12}body .listing-hero>p:last-child{margin-top:14px}body .section-heading{margin-bottom:20px}body .section-heading h2,body .method-section h2,body .content-section h2,body .quality-section h2,body .official-sources h2,body .detail-heading h2{font-size:28px}body .listing-grid{padding:20px 0 32px;margin-top:0}body .listing-card{padding:20px;grid-template-columns:48px minmax(0,1fr);gap:14px}body .listing-card>img{width:48px;height:48px;border-radius:12px}body .listing-card h2{font-size:24px}body .app-card{min-height:0}body .app-card .kc-free-note{min-height:0}body .app-card h3{font-size:23px}body .book-grid:has(.book-bsp) .book-card{grid-template-columns:76px minmax(0,1fr);padding:18px;gap:14px}body .book-grid:has(.book-bsp) .book-cover-wrap,body .book-grid:has(.book-bsp) .book-cover-wrap img{width:76px;max-width:76px}body .book-grid:has(.book-bsp) .book-copy h3{font-size:22px}body .book-grid:has(.book-bsp) .book-copy .book-actions{flex-direction:column;gap:4px}body .kc-orientation{padding:24px 20px}body .kc-orientation h2{font-size:28px}body .kc-goal-card{padding:18px}body .comparison-section{padding:28px 0}body .faq-section.compact-faq{padding:28px 0 32px}body .kc-page-outline .kc-outline-desktop{display:none}body .kc-outline-mobile{display:block}body .kc-outline-mobile summary{list-style:none;cursor:pointer;min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:12px;color:#a0eee6;text-decoration:none;text-underline-offset:4px;font-weight:650}body .kc-outline-mobile summary::-webkit-details-marker{display:none}body .kc-outline-mobile summary::after{content:'+';font-size:24px}body .kc-outline-mobile[open] summary::after{content:'−'}body .kc-outline-mobile .kc-outline-links{padding-top:8px}body .kc-author-profile{grid-template-columns:1fr;padding:28px 20px 32px;gap:20px}body .kc-author-photo img{width:128px}body .kc-author-copy h2{font-size:28px}body .kc-access{padding:28px 20px}body .kc-access h2{font-size:28px}body .kc-access-card{padding:18px}}

@media(min-width:1101px){body .site-header.kc-header-v33{max-width:1600px;width:calc(100% - 64px)}body .hero,body .listing-hero,body .product-hero,body .book-detail-hero{width:min(1600px,calc(100% - 64px))}body .app-section,body .listing-grid,body .book-listing-grid,body .comparison-section,body .detail-section,body .faq-section,body .breadcrumbs,body footer{width:min(1600px,calc(100% - 64px))}body .book-section{padding-left:32px;padding-right:32px}body .book-section-inner{width:100%;max-width:1600px}body .kc-orientation{max-width:1600px;width:calc(100% - 64px);box-sizing:border-box;padding-left:0;padding-right:0}body .kc-access{max-width:1664px;padding-left:32px;padding-right:32px;box-sizing:border-box}body .content-section{width:min(1440px,calc(100% - 64px));grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr)}body .content-section .prose-stack{max-width:760px}body .kc-author-profile{max-width:1440px;padding-left:32px;padding-right:32px;grid-template-columns:180px minmax(0,1fr);gap:48px}body .kc-author-copy{max-width:940px}body .method-section{padding-left:max(32px,calc((100vw - 1600px)/2));padding-right:max(32px,calc((100vw - 1600px)/2));grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr)}body .quality-section,body .official-sources{padding-left:max(32px,calc((100vw - 1440px)/2));padding-right:max(32px,calc((100vw - 1440px)/2));grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr)}body .hero-copy{max-width:760px}body .hero h1{max-width:760px;hyphens:none;-webkit-hyphens:none;overflow-wrap:normal}body .listing-hero>p{max-width:850px}body .kc-page-outline{max-width:none}body .kc-goal-card{min-width:0}body .book-grid:has(.book-bsp) .book-card{grid-template-columns:112px minmax(0,1fr)}body .book-grid:has(.book-bsp) .book-cover-wrap,body .book-grid:has(.book-bsp) .book-cover-wrap img{width:112px;max-width:112px}}@media(min-width:1500px){body .listing-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}

.kc-book-toc{margin:22px 0 0;border:1px solid #a9c7c9;border-radius:12px;background:#fff;overflow:hidden;color:#173b43}.kc-book-toc>summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:56px;padding:15px 20px;font-size:17px;font-weight:700;line-height:1.4;box-sizing:border-box;color:#125a60}.kc-book-toc>summary::-webkit-details-marker{display:none}.kc-book-toc>summary::after{content:'+';font-size:26px;line-height:1;font-weight:400;flex:none}.kc-book-toc[open]>summary::after{content:'−'}.kc-book-toc>summary:hover{background:#edf5f5}.kc-book-toc>summary:focus-visible{outline:3px solid #167a80;outline-offset:-4px}.kc-book-toc[open]>summary{border-bottom:1px solid #c8dcdd}.kc-book-toc-body{padding:20px}.kc-book-toc-note{margin:0 0 20px!important;max-width:760px;font-size:14px!important;line-height:1.6!important;color:#47636c}.kc-book-toc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 36px;align-items:start}.kc-book-toc-group h3{font-size:16px!important;line-height:1.4!important;margin:0 0 10px!important;padding-bottom:8px;border-bottom:2px solid #c6dddd;color:#125a60}.kc-book-toc-group ol,.kc-book-toc-group ul{list-style:none;margin:0;padding:0;display:block!important}.kc-book-toc-group li{display:grid!important;grid-template-columns:2.1em minmax(0,1fr);gap:5px;padding:6px 0;border-bottom:1px solid #e3eded;font-size:15px!important;line-height:1.55!important;color:#294b53}.kc-book-toc-number{font-variant-numeric:tabular-nums;color:#58767b}.kc-book-toc-section{width:min(1600px,calc(100% - 48px));margin:0 auto;padding:20px 0 36px}.kc-book-toc-section h2{font-size:28px;line-height:1.2;margin:0 0 8px}.kc-book-toc-section>p{font-size:16px;line-height:1.6;margin:0;color:#526b72}.kc-book-toc-section .kc-book-toc{margin-top:16px}.kc-v19-samples>.kc-book-toc{margin-bottom:28px}@media(min-width:1101px){.kc-book-toc-section{width:min(1600px,calc(100% - 64px))}}@media(max-width:700px){.kc-book-toc-grid{grid-template-columns:1fr;gap:22px}.kc-book-toc>summary{font-size:16px;padding:14px 16px;gap:12px}.kc-book-toc-body{padding:16px}.kc-book-toc-section{width:calc(100% - 40px);padding:16px 0 28px}.kc-book-toc-section h2{font-size:25px}.kc-book-toc-group li{font-size:14px!important}.kc-book-toc-note{margin-bottom:18px!important}}
.kc-v37-samples{padding-top:20px;padding-bottom:40px}.kc-v37-samples>h2{margin:8px 0 12px;font-size:clamp(26px,2.4vw,36px);line-height:1.25}.kc-v37-samples>p:not(.eyebrow){max-width:850px}.kc-v37-samples>.kc-book-toc{margin-bottom:26px}.kc-v37-samplegrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:24px}.kc-v37-samplegrid figure{margin:0;min-width:0}.kc-v37-samplegrid a{display:flex;flex-direction:column;height:100%;text-decoration:none;color:#173b43;border:1px solid #d0dfe0;border-radius:12px;overflow:hidden;background:#fff;transition:border-color .15s ease}.kc-v37-samplegrid a:hover{border-color:#167a80}.kc-v37-samplegrid a:focus-visible{outline:3px solid #167a80;outline-offset:4px}.kc-v37-samplegrid img{display:block;width:100%;height:auto;aspect-ratio:513/738;object-fit:contain;background:white}.kc-v37-samplegrid figcaption{padding:16px 18px;border-top:1px solid #e0ebeb;font-size:17px;font-weight:700;line-height:1.4}.kc-v37-samplegrid small{display:block;font-weight:400;font-size:14px;line-height:1.5;margin-top:6px;color:#526b72}.kc-v37-open{display:block;margin-top:9px;font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:3px;color:#125a60}@media(max-width:700px){.kc-v37-samplegrid{grid-template-columns:1fr;gap:22px}.kc-v37-samplegrid figure{max-width:420px;width:100%;margin:0 auto}.kc-v37-samples{padding-bottom:28px}.kc-v37-samplegrid figcaption{padding:14px 16px}}