:root{--ink:#253522;--text:#30372e;--muted:#5f675b;--lime:#cee96d;--green:#43661d;--paper:#f7f9f2;--line:#d9dfd2;--white:#fff;--font:"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic",YuGothic,Meiryo,sans-serif;--serif:"Hiragino Mincho ProN","Yu Mincho",YuMincho,"Noto Serif JP",serif}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--white);color:var(--text);font-family:var(--font);font-size:1rem;line-height:1.9;letter-spacing:.025em;-webkit-font-smoothing:antialiased}body:has(dialog[open]){overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}button,a,summary{-webkit-tap-highlight-color:transparent}button{border:0}img{display:block;max-width:100%;height:auto}h1,h2,h3,p,figure,blockquote{margin:0}h1,h2,h3{color:var(--ink);font-weight:700;line-height:1.55;font-feature-settings:"palt"}em{font-style:normal}h2{font-size:clamp(1.7rem,2.8vw,2.8rem);letter-spacing:.025em;line-height:1.65}p{overflow-wrap:break-word}::selection{background:var(--lime);color:var(--ink)}[hidden]{display:none!important}:focus-visible{outline:3px solid #4a7124;outline-offset:5px}.button:focus-visible{outline-offset:4px}.container{width:calc(100% - 112px);max-width:1250px;margin-inline:auto}.section{padding-block:112px}.eyebrow{font-size:.875rem;line-height:1.8;font-weight:700;letter-spacing:.08em;color:var(--green);margin-bottom:26px}.section-number{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border:1px solid currentColor;border-radius:50%;font:500 .75rem/1 Arial,sans-serif;letter-spacing:0;margin-right:12px}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:30px;min-height:64px;padding:17px 28px;border-radius:5px;font-size:1rem;font-weight:700;letter-spacing:.03em;line-height:1.6;border:1px solid transparent;transition:background .18s,transform .18s}.button>span[aria-hidden]{font-family:Arial,sans-serif;font-size:1.5rem;font-weight:400;line-height:1}.button:hover{transform:translateY(-2px)}.button-lime{background:var(--lime);color:var(--ink)}.button-lime:hover{background:#bddb54}.button-dark{background:var(--ink);color:white}.button-dark:hover{background:#3e5337}.button-outline{border-color:#aab89e;background:transparent;color:var(--ink)}.button-outline:hover{background:#eef3e5}.button-small{min-height:44px;padding:11px 21px;font-size:.875rem;gap:30px}.text-link{display:inline-flex;align-items:center;gap:20px;font-size:.9375rem;font-weight:700;line-height:1.8;border:0;border-bottom:1px solid currentColor;background:none;padding:6px 0;transition:color .18s}.text-link:hover{color:var(--green)}.text-link>span[aria-hidden]{font-family:Arial,sans-serif;font-size:1.25rem}.mobile-only{display:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;left:15px;top:-100px;z-index:100;background:var(--ink);color:white;padding:12px 20px}.skip-link:focus{top:10px}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}.header-inner{height:88px;max-width:1440px;padding-inline:42px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:30px}.wordmark{font-size:1rem;font-weight:800;letter-spacing:.03em;line-height:1.6;flex-shrink:0;color:var(--ink)}.wordmark span{display:inline-block}.header-inner nav{display:flex;align-items:center;gap:34px;margin-left:auto;margin-right:24px}.header-inner nav a{font-size:.875rem;font-weight:600;line-height:2;padding-block:10px;border-bottom:1px solid transparent}.header-inner nav a:hover{border-bottom-color:var(--green)}
.hero{padding-top:68px;background:var(--paper);overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:35px;align-items:center}.hero-copy{padding-block:10px 28px;min-width:0}.hero .eyebrow{font-size:.8125rem;margin-bottom:28px}.hero h1{font-size:clamp(2rem,4.05vw,3.75rem);line-height:1.7;letter-spacing:.025em;white-space:nowrap}.hero h1 em{position:relative;background:linear-gradient(transparent 79%,#d7eb9d 79%,#d7eb9d 96%,transparent 96%)}.hero-lead{font-size:1.0625rem;line-height:2.1;margin-top:28px;font-weight:600}.hero-description{font-size:.9375rem;line-height:2;margin-top:18px;color:var(--muted)}.hero-actions{display:flex;align-items:center;gap:26px;flex-wrap:wrap;margin-top:30px}.hero-credit{font-size:.8125rem;color:var(--muted);margin-top:20px;line-height:1.9}.hero-credit span{padding-inline:8px;color:#969f8e}.hero-visual{align-self:center;position:relative;min-width:0;margin-left:16px;padding:20px 0 36px}.cover-stage{position:relative;min-height:510px;display:flex;align-items:center;justify-content:center;isolation:isolate}.cover-stage:before{content:"";position:absolute;inset:20px -35px 0 0;background:#e7efcc;border-radius:50% 50% 0 0;z-index:-1}.hero-cover{width:330px;max-width:78%;height:auto;transform:rotate(6deg);box-shadow:10px 18px 28px #293c262a,1px 2px 3px #293c2615}.hero-visual figcaption{margin:25px 0 0 45%;font-family:var(--serif);font-size:1rem;line-height:1.9;transform:rotate(3deg)}.hero-foot{border-top:1px solid #cfd6c2;margin-top:40px;min-height:93px;display:flex;align-items:center;justify-content:space-between;gap:20px}.hero-foot p{font-size:.875rem;color:var(--muted);letter-spacing:.05em}.hero-foot a{font-size:.8125rem;letter-spacing:.08em}.hero-foot a span{margin-left:25px}
.section-intro{text-align:center}.section-intro .eyebrow{margin-bottom:20px}.concerns{display:grid;grid-template-columns:repeat(3,1fr);margin-top:60px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.concern{padding:35px 36px 36px}.concern:first-child{padding-left:0}.concern:last-child{padding-right:0}.concern+.concern{border-left:1px solid var(--line)}.concern-scene{font-size:.8125rem;color:var(--green);font-weight:600;letter-spacing:.08em;margin-bottom:22px}.concern h3{font-size:clamp(1.3rem,1.7vw,1.7rem);line-height:1.8;margin-bottom:22px}.concern>p:last-child{color:var(--muted);font-size:.9375rem;line-height:2}.about-answer{text-align:center;margin-top:70px}.about-answer>p:first-child{font-size:.9375rem;color:var(--muted)}.answer-title{font-size:clamp(1.8rem,3.1vw,3rem);line-height:1.8;color:var(--ink);font-weight:700;margin-block:18px 26px}.answer-title strong{font-weight:700;border-bottom:5px solid var(--lime);padding-bottom:8px}.about-answer>p:last-child{font-size:1rem;line-height:2.2}
.section-learning{background:var(--ink);color:#e5ebdf}.learning-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:90px}.section-learning .eyebrow{color:var(--lime)}.section-learning h2,.section-learning h3{color:white}.learning-heading h2{font-size:clamp(1.6rem,2.5vw,2.45rem);margin-bottom:32px}.learning-heading h2 em{color:var(--lime)}.learning-heading>p:last-child{line-height:2.2;font-size:.9375rem;color:#d3ddcb}.learning-list article{display:grid;grid-template-columns:32px 1fr;gap:22px;padding-block:28px;border-top:1px solid #5a6b51}.learning-list article:first-child{padding-top:0;border-top:0}.learning-list article:last-child{padding-bottom:0}.item-number{font:500 1rem/1.8 Arial,sans-serif;color:var(--lime);padding-top:23px}.topic-reference{font-size:.75rem;color:#bed1aa;margin-bottom:4px}.learning-list h3{font-size:1.125rem;margin-bottom:12px;line-height:1.8}.learning-list article>div>p:last-child{font-size:.9375rem;line-height:2;color:#d3ddcb}
.section-sample{background:#edf4df;overflow:hidden}.sample-layout{display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:100px}.sample-copy h2{font-size:clamp(1.6rem,2.7vw,2.5rem)}.excerpt{margin-block:35px 28px;border-left:3px solid #789446;padding-left:25px}.excerpt blockquote{font-family:var(--serif);font-weight:600;font-size:1.2rem;line-height:2.2;color:var(--ink);max-width:500px}.excerpt figcaption{font-size:.75rem;color:var(--muted);margin-top:16px;line-height:1.8}.sample-copy>p:not(.eyebrow):not(.sample-note){font-size:.9375rem;line-height:2.1;margin-bottom:28px}.sample-note{font-size:.8125rem;color:var(--muted);margin-top:12px}.sample-paper{position:relative;width:350px;max-width:100%;margin-inline:auto;transform:rotate(4deg);box-shadow:9px 18px 38px #293c2620;transition:transform .25s}.sample-paper:hover{transform:rotate(1deg) translateY(-4px)}.sample-paper img{width:100%;height:auto}.paper-caption{position:absolute;bottom:-18px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:10px 21px;white-space:nowrap;font-size:.8125rem;border-radius:3px;box-shadow:0 4px 12px #0001}.paper-caption>span{margin-left:20px}
.contents-layout{display:grid;grid-template-columns:.85fr 1.3fr;gap:90px}.contents-heading>p:last-child{font-size:.9375rem;line-height:2.1;color:var(--muted);margin-top:26px}.chapter-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line)}summary{list-style:none;cursor:pointer;position:relative}summary::-webkit-details-marker{display:none}.chapter-list summary{display:grid;grid-template-columns:50px 1fr 16px;align-items:start;gap:17px;padding-block:27px}.chapter-number{font-size:.8125rem;font-weight:700;color:var(--green);padding-top:4px}.chapter-list h3{font-size:1rem;line-height:1.9;letter-spacing:.01em}.expand-icon{width:14px;height:14px;position:relative;display:inline-block;flex-shrink:0;margin-top:10px}.expand-icon:before,.expand-icon:after{content:"";position:absolute;display:block;background:currentColor;top:6px;left:0;width:14px;height:1px}.expand-icon:after{transform:rotate(90deg);transition:transform .2s}details[open]>summary .expand-icon:after{transform:rotate(0)}.chapter-body{margin:0 28px 30px 67px;color:var(--muted);font-size:.875rem;line-height:2}.chapter-body ul{padding-left:1.2em;margin-top:17px;margin-bottom:0}.chapter-body li{margin-top:5px;font-size:.875rem}.chapter-body li::marker{color:#7e9c4f}
.section-author{background:var(--paper)}.author-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:100px}.author-heading h2{line-height:1.7}.author-heading h2 em{display:inline-block;font-size:.62em;padding-top:13px}.author-name{margin-top:46px}.author-name>p{font-size:.8125rem;color:var(--green);margin-bottom:9px}.author-name h3{font-size:1.8rem;font-weight:500;letter-spacing:.09em}.author-name h3 span{display:inline-block;font-size:.75rem;margin-left:10px;letter-spacing:.05em}.author-story>p{font-size:.9375rem;line-height:2.2;margin-bottom:24px}.author-story blockquote{font-size:1.45rem;font-family:var(--serif);font-weight:600;line-height:1.9;color:var(--green);margin-block:25px}.author-profile{border-top:1px solid var(--line);padding-top:23px;margin-top:28px}.author-profile>p{font-size:.8125rem;color:var(--muted);line-height:2}.author-profile .profile-note{font-size:.75rem;margin-top:10px;color:var(--muted)}.experience-strip{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:30px;margin-top:65px;gap:30px}.experience-strip>p:first-child{font-family:var(--serif);font-size:1.0625rem}.experience-strip>p:last-child{font-size:1rem;color:var(--ink);line-height:1.5}.experience-strip strong{font:500 3rem/1.2 Georgia,serif;color:var(--green)}.experience-strip small{display:block;text-align:right;font-size:.75rem;color:var(--muted);margin-top:8px}
.section-purchase{background:#dcebad;padding-top:100px;padding-bottom:85px}.closing-copy{text-align:center;margin-bottom:56px}.closing-copy .eyebrow{margin-bottom:22px}.closing-copy h2{font-size:clamp(2rem,3.7vw,3.5rem);line-height:1.7}.closing-copy h2 em{border-bottom:2px solid #607d37;padding-bottom:7px}.closing-copy>p:last-child{margin-top:28px;font-size:1rem;line-height:2}.purchase-panel{display:grid;grid-template-columns:170px 1fr 1.2fr;gap:42px;align-items:center;background:white;border-radius:8px;padding:48px}.purchase-cover{width:170px;box-shadow:4px 9px 18px #293c261f}.book-kicker{font-size:.75rem;font-weight:600;color:var(--green);margin-bottom:14px}.purchase-info h3{font-size:1.6rem;line-height:1.7}.book-author{font-size:.8125rem;margin-top:12px;color:var(--muted)}.price{font:500 2.4rem/1.5 Georgia,serif;color:var(--ink);margin-block:17px 15px;letter-spacing:.025em}.price span{font-family:var(--font);font-size:.8125rem;margin-left:8px}.book-specs{margin:0;font-size:.75rem;color:var(--muted);line-height:1.9}.book-specs>div{display:flex;gap:12px}.book-specs dt{min-width:82px}.book-specs dd{margin:0}.purchase-links>p:first-child{font-size:.875rem;text-align:center;margin-bottom:18px;font-weight:600}.store-button{display:flex;width:100%;margin-bottom:12px;gap:15px;font-size:.9375rem;padding-inline:24px}.bookstore-link{display:flex;width:max-content;max-width:100%;margin:17px auto 0;font-size:.875rem;gap:15px}.purchase-note{font-size:.75rem;color:var(--muted);line-height:1.9;margin-top:24px}.faq{max-width:800px;margin:66px auto 0}.faq>h3{font-size:1rem;text-align:center;margin-bottom:24px}.faq details{border-color:#b6c68f}.faq details:first-of-type{border-top:1px solid #b6c68f}.faq summary{display:flex;justify-content:space-between;gap:25px;font-size:.9375rem;font-weight:600;padding-block:20px}.faq .expand-icon{margin-top:7px}.faq details>p{font-size:.875rem;line-height:2.1;padding:0 35px 25px 0;color:#465238}.site-footer{padding-block:35px;background:white}.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:25px}.footer-inner>p,.footer-inner>a:last-child{font-size:.75rem;color:var(--muted)}.mobile-buy{display:none}.reading-fallback{padding-block:50px}.reading-fallback h2{font-size:1.5rem}.reading-fallback p{margin-top:10px}.fallback-links{display:flex;flex-wrap:wrap;gap:20px;margin-top:20px}.fallback-links a{text-decoration:underline;text-underline-offset:5px}.reader-enabled .reading-fallback{display:none}
dialog{border:0;border-radius:10px;padding:0;width:960px;max-width:calc(100% - 40px);max-height:90vh;max-height:90dvh;background:var(--paper);color:var(--text);box-shadow:0 20px 80px #0004}dialog[open]{display:flex;flex-direction:column}dialog::backdrop{background:#142011cf;backdrop-filter:blur(5px)}.reader-header{display:flex;justify-content:space-between;align-items:center;padding:22px 30px;background:white;border-bottom:1px solid var(--line);gap:20px;flex-shrink:0}.reader-header p{font-size:.75rem;color:var(--muted);margin-bottom:3px}.reader-header h2{font-size:1.25rem;line-height:1.5}.reader-close{background:var(--paper);border:1px solid var(--line);border-radius:50%;width:44px;height:44px;display:grid;place-items:center;font-size:1.8rem;font-weight:300;line-height:1;flex-shrink:0}.reader-tools{padding:12px 30px;display:flex;justify-content:space-between;align-items:center;gap:15px;background:white;border-bottom:1px solid var(--line);flex-shrink:0}.reader-tools p{font-size:.8125rem;color:var(--muted)}.reader-mode{background:var(--paper);border:1px solid #a8b59c;border-radius:4px;padding:8px 12px;font-size:.8125rem;min-height:44px;font-weight:600}.reader-body{overflow-y:auto;overscroll-behavior:contain;min-height:0;padding:30px}.reader-pages{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}.reader-pages figure{min-width:0}.reader-pages img{width:100%;box-shadow:0 2px 9px #0001}.reader-pages figcaption{text-align:center;font:400 .75rem/1.8 Georgia,serif;color:var(--muted);padding-top:7px}.reader-text{max-width:600px;margin:0 auto;font-size:1.0625rem;line-height:2.1;background:white;padding:28px 36px}.reader-text h3{font-size:1.5rem;line-height:1.8;margin-bottom:24px}.reader-text>p{margin-bottom:18px}.reader-text .reader-page-label{font-size:.8125rem;color:var(--green);border-top:1px solid var(--line);padding-top:28px;margin-top:35px}.reader-text .reader-page-label:first-child{margin-top:0;padding-top:0;border:0}.reader-end{padding-block:35px 15px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:18px}.reader-end>p{font-family:var(--serif);font-size:1.25rem}.reader-end .button{min-width:270px}.reader-end .text-link{font-size:.8125rem}
@media(min-width:1500px){.hero{padding-top:90px}.hero-grid{gap:55px}.cover-stage{min-height:550px}.hero-cover{width:355px}.hero h1{font-size:3.85rem}}
@media(max-width:1150px){.container{width:calc(100% - 80px)}.header-inner{padding-inline:30px;gap:25px}.header-inner nav{gap:22px;margin-right:0}.hero-grid{grid-template-columns:1.35fr 1fr;gap:22px}.hero h1{font-size:3.9vw}.cover-stage{min-height:420px}.hero-visual{margin-left:0}.hero-cover{max-width:80%;width:295px}.hero .eyebrow{font-size:.75rem}.hero-lead{font-size:1rem}.hero-actions{gap:20px}.hero-actions .button{padding-inline:22px;gap:22px;font-size:.9375rem}.hero-actions .text-link{font-size:.8125rem;gap:12px}.hero-credit{font-size:.75rem}.learning-layout,.author-layout{gap:55px}.contents-layout{gap:60px}.sample-layout{gap:70px}.purchase-panel{padding:36px;grid-template-columns:135px 1fr 1.15fr;gap:28px}.purchase-info h3{font-size:1.4rem}.book-kicker{font-size:.75rem}.book-specs>div{display:block;margin-top:5px}.book-specs dt,.book-specs dd{display:inline}.book-specs dt:after{content:"："}.store-button{padding-inline:18px;font-size:.875rem}.purchase-links .text-link{font-size:.8125rem}}
@media(max-width:900px){.container{width:calc(100% - 56px)}.header-inner{height:76px;padding-inline:28px}.header-inner nav{display:none}.section{padding-block:85px}.hero{padding-top:48px}.hero-grid{grid-template-columns:1.2fr 1fr;gap:15px}.hero h1{font-size:3.85vw}.hero-copy{padding:0}.hero .eyebrow{font-size:.75rem;letter-spacing:0;margin-bottom:20px}.hero-lead{font-size:.875rem;margin-top:20px;line-height:2}.hero-description{font-size:.8125rem;margin-top:14px}.hero-actions{gap:17px;margin-top:24px}.hero-actions .button{min-height:58px}.cover-stage{min-height:370px}.hero-visual{padding-block:10px 30px}.cover-stage:before{inset:18px -28px 0 0}.hero-visual figcaption{font-size:.875rem;margin-left:30%}.hero-credit{font-size:.75rem;margin-top:15px}.hero-credit span{padding-inline:5px}.hero-foot{margin-top:38px}.concern{padding-inline:25px}.concern h3{font-size:1.3rem}.concern>p:last-child{font-size:.875rem}.concern-scene{font-size:.75rem}.learning-layout{gap:45px;grid-template-columns:1fr 1.15fr}.learning-heading h2{font-size:1.55rem}.learning-list article{gap:14px;grid-template-columns:24px 1fr}.learning-list h3{font-size:1rem}.learning-list article>div>p:last-child{font-size:.875rem}.sample-layout{gap:45px}.sample-copy h2{font-size:1.65rem}.excerpt blockquote{font-size:1.0625rem}.sample-copy .button{font-size:.875rem;padding-inline:20px;gap:15px}.contents-layout{grid-template-columns:.8fr 1.3fr;gap:35px}.contents-heading h2{font-size:1.65rem}.chapter-list summary{grid-template-columns:42px 1fr 14px;gap:12px}.chapter-body{margin-left:54px;font-size:.8125rem}.chapter-list h3{font-size:.9375rem}.author-layout{gap:45px}.author-heading h2{font-size:1.95rem}.author-story blockquote{font-size:1.2rem}.experience-strip{align-items:flex-start}.experience-strip>p:first-child{font-size:.9375rem;max-width:250px}.experience-strip strong{font-size:2.5rem}.experience-strip>p:last-child{font-size:.875rem}.purchase-panel{grid-template-columns:160px 1fr;gap:30px;padding:36px}.purchase-cover{width:160px;justify-self:center}.purchase-info h3{font-size:1.65rem}.purchase-links{grid-column:1/-1;max-width:none;width:100%;display:grid;grid-template-columns:1fr 1fr;column-gap:16px}.purchase-links>p:first-child{grid-column:1/-1;margin-bottom:14px}.purchase-links .bookstore-link{grid-column:1/-1;margin-top:7px}.purchase-note{grid-column:1/-1;text-align:center;margin-top:18px}.footer-inner{flex-wrap:wrap;gap:15px}.footer-inner .wordmark{font-size:.9375rem}}
@media(max-width:650px){html{scroll-padding-top:84px}.container{width:calc(100% - 40px)}.section{padding-block:68px}.header-inner{height:68px;padding-inline:20px;gap:15px}.wordmark{font-size:.8125rem;line-height:1.65}.header-inner .wordmark span{display:block}.button-small{font-size:.75rem;min-height:42px;padding:10px 13px;gap:16px}.button-small>span[aria-hidden]{font-size:1.1rem}.hero{padding-top:32px}.hero-grid{display:flex;flex-direction:column;gap:24px;align-items:stretch}.hero-copy{z-index:1}.hero .eyebrow{font-size:.75rem;letter-spacing:.02em;margin-bottom:20px}.hero h1{font-size:clamp(1.6rem,6.9vw,2.6rem);line-height:1.85;letter-spacing:.01em;white-space:normal}.hero h1 em{background:linear-gradient(transparent 78%,#d7eb9d 78%,#d7eb9d 93%,transparent 93%)}.hero-lead{font-size:.9375rem;line-height:2;margin-top:22px}.hero-description{font-size:.875rem;line-height:2;margin-top:15px}.hero-actions{gap:16px;margin-top:24px;justify-content:flex-start}.hero-actions .button{font-size:.875rem;min-height:57px;padding:15px 20px;gap:18px}.hero-actions .text-link{font-size:.8125rem;gap:9px}.hero-credit{font-size:.75rem;margin-top:17px}.hero-credit span{padding-inline:5px}.hero-visual{width:85%;max-width:365px;align-self:center;margin-top:10px;padding:7px 0 10px}.cover-stage{min-height:375px}.cover-stage:before{inset:15px -15px 0 -10px}.hero-cover{width:240px;max-width:78%;transform:rotate(5deg);box-shadow:7px 12px 24px #293c2630}.hero-visual figcaption{font-size:.8125rem;margin:24px 0 0 45%;line-height:1.9}.hero-foot{margin-top:25px;min-height:87px;padding-block:20px}.hero-foot p{font-size:.75rem;line-height:1.9;letter-spacing:.03em}.hero-foot a{font-size:.75rem;max-width:130px;text-align:right;line-height:1.9}.hero-foot a span{margin-left:8px}.mobile-only{display:initial}.desktop-only{display:none}.eyebrow{font-size:.8125rem;letter-spacing:.04em;margin-bottom:22px}.section-number{width:28px;height:28px;margin-right:9px}.section-intro{text-align:left}h2{font-size:1.75rem;line-height:1.75}.concerns{grid-template-columns:1fr;margin-top:32px}.concern,.concern:first-child,.concern:last-child{padding:28px 0}.concern+.concern{border-left:0;border-top:1px solid var(--line)}.concern-scene{font-size:.75rem;margin-bottom:12px}.concern h3{font-size:1.2rem;line-height:1.9;margin-bottom:12px}.concern h3 br{display:none}.concern>p:last-child{font-size:.875rem;line-height:2;max-width:480px}.about-answer{margin-top:40px;text-align:left}.about-answer>p:first-child{font-size:.8125rem}.answer-title{font-size:1.8rem;margin-block:20px 24px;line-height:1.85}.answer-title strong{border-bottom-width:4px;padding-bottom:5px}.about-answer>p:last-child{font-size:.9375rem;line-height:2.2}.learning-layout{grid-template-columns:1fr;gap:36px}.learning-heading h2{font-size:1.65rem;margin-bottom:22px}.learning-heading>p:last-child{font-size:.875rem}.learning-list article{grid-template-columns:28px 1fr;gap:14px;padding-block:25px}.learning-list article:first-child{padding-top:25px;border-top:1px solid #5a6b51}.learning-list h3{font-size:1.0625rem}.learning-list article>div>p:last-child{font-size:.875rem;line-height:2.1}.topic-reference{font-size:.75rem}.sample-layout{grid-template-columns:1fr;gap:45px}.sample-copy h2{font-size:1.65rem}.excerpt{margin-block:26px 22px;padding-left:18px}.excerpt blockquote{font-size:1.0625rem;line-height:2.2}.excerpt figcaption{font-size:.75rem}.sample-copy>p:not(.eyebrow):not(.sample-note){font-size:.875rem;margin-bottom:24px}.sample-copy .button{min-height:60px;font-size:.9375rem;padding-inline:23px;gap:24px}.sample-note{font-size:.75rem}.sample-paper{width:255px;margin-bottom:12px;transform:rotate(3deg)}.paper-caption{font-size:.75rem}.contents-layout{grid-template-columns:1fr;gap:30px}.contents-heading h2{font-size:1.75rem}.contents-heading>p:last-child{font-size:.875rem;margin-top:21px}.chapter-list summary{grid-template-columns:42px 1fr 14px;gap:11px;padding-block:23px}.chapter-list h3{font-size:.9375rem;line-height:1.85}.chapter-list h3 br{display:none}.chapter-number{font-size:.75rem}.chapter-body{margin:0 23px 24px 53px;font-size:.875rem}.chapter-body li{font-size:.8125rem}.author-layout{grid-template-columns:1fr;gap:32px}.author-heading h2{font-size:2rem;line-height:1.7}.author-heading h2 em{font-size:.65em;padding-top:10px}.author-name{margin-top:28px}.author-name h3{font-size:1.65rem}.author-name h3 span{font-size:.75rem}.author-story>p{font-size:.9375rem;line-height:2.2;margin-bottom:21px}.author-story blockquote{font-size:1.25rem;margin-block:22px}.author-profile>p{font-size:.8125rem}.experience-strip{display:block;margin-top:36px;padding-top:25px}.experience-strip>p:first-child{font-size:.875rem;max-width:none}.experience-strip>p:last-child{margin-top:24px;font-size:.9375rem}.experience-strip strong{font-size:3rem}.experience-strip small{text-align:left;font-size:.75rem;margin-top:10px}.section-purchase{padding-block:65px 60px}.closing-copy{margin-bottom:32px;text-align:left}.closing-copy .eyebrow{font-size:.75rem;letter-spacing:.03em;margin-bottom:20px}.closing-copy h2{font-size:clamp(1.65rem,6.5vw,2.5rem);line-height:1.9}.closing-copy h2 em{padding-bottom:6px}.closing-copy>p:last-child{font-size:.875rem;margin-top:22px}.purchase-panel{grid-template-columns:100px 1fr;padding:25px 20px;gap:23px 18px;border-radius:6px;align-items:start}.purchase-cover{width:100px;margin-top:3px}.purchase-info h3{font-size:1.175rem;line-height:1.75}.book-kicker{display:none}.book-author{font-size:.75rem;line-height:1.9;margin-top:10px}.price{font-size:1.8rem;margin-block:10px 11px;white-space:nowrap}.price span{font-size:.75rem;margin-left:4px}.book-specs{font-size:.75rem;line-height:1.8;overflow-wrap:anywhere}.book-specs>div{margin-top:5px}.purchase-links{display:block;grid-column:1/-1}.purchase-links>p:first-child{font-size:.8125rem;margin-bottom:14px}.store-button{font-size:.9375rem;min-height:60px;padding-inline:22px;margin-bottom:12px}.purchase-links .bookstore-link{font-size:.8125rem;margin-top:16px;gap:12px}.purchase-note{font-size:.75rem;text-align:left;line-height:1.9;margin-top:22px}.faq{margin-top:42px}.faq>h3{font-size:.9375rem;margin-bottom:20px}.faq summary{font-size:.875rem;padding-block:19px;gap:20px;line-height:1.9}.faq details>p{font-size:.875rem;padding-right:10px}.site-footer{padding-block:29px 125px}.footer-inner{display:block}.footer-inner .wordmark{font-size:.8125rem}.footer-inner>p{font-size:.75rem;margin-top:10px}.footer-inner>a:last-child{display:inline-block;font-size:.75rem;margin-top:15px;text-decoration:underline;text-underline-offset:5px}.mobile-buy{position:fixed;z-index:25;bottom:0;left:0;right:0;display:flex;justify-content:space-between;align-items:center;gap:16px;background:#fffffffa;box-shadow:0 -2px 15px #2436230b;border-top:1px solid var(--line);padding:12px 18px;padding-bottom:max(12px,env(safe-area-inset-bottom));backdrop-filter:blur(8px)}.mobile-buy>div{min-width:0}.mobile-buy strong{display:block;font-size:.75rem;font-weight:700;line-height:1.7;letter-spacing:0}.mobile-buy>div>span{display:block;font-size:.75rem;color:var(--muted);margin-top:2px}.mobile-buy .button{font-size:.875rem;padding:12px 18px;min-height:47px;gap:19px;flex-shrink:0}.mobile-buy .button>span{font-size:1.1rem}body:has(#purchase:target) .mobile-buy{display:none}dialog{width:100%;max-width:calc(100% - 20px);max-height:94vh;max-height:94dvh;border-radius:8px}.reader-header{padding:16px 18px;gap:12px}.reader-header p{font-size:.75rem}.reader-header h2{font-size:1.125rem}.reader-tools{padding:10px 18px}.reader-tools p{font-size:.75rem}.reader-mode{font-size:.75rem;padding:8px 10px}.reader-body{padding:19px 15px}.reader-pages{grid-template-columns:1fr;gap:23px}.reader-pages figure{max-width:460px;margin:auto}.reader-text{padding:22px 18px;font-size:1rem;line-height:2.1}.reader-text h3{font-size:1.3rem}.reader-end .button{min-width:240px;font-size:.9375rem}.reader-end>p{font-size:1.1rem}.fallback-links{flex-direction:column;gap:14px}}
@media(max-width:359px){.container{width:calc(100% - 32px)}.header-inner{padding-inline:16px;gap:10px}.wordmark{font-size:.75rem}.hero .eyebrow{font-size:.75rem;letter-spacing:0}.hero h1{font-size:6.8vw}.hero-actions{gap:13px}.hero-actions .button{padding-inline:15px;gap:14px;font-size:.8125rem}.hero-actions .text-link{font-size:.75rem;gap:7px}.hero-credit{font-size:.75rem}.hero-credit span{padding-inline:2px}.cover-stage{min-height:340px}.hero-cover{width:218px}.purchase-panel{padding:22px 16px;grid-template-columns:85px 1fr;gap:22px 14px}.purchase-cover{width:85px}.purchase-info h3{font-size:1.0625rem}.mobile-buy{padding-inline:12px;gap:10px}.mobile-buy .button{padding-inline:14px;gap:13px}.closing-copy h2{font-size:6.3vw}.author-story blockquote{font-size:1.1rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
@media print{.site-header,.hero-actions,.mobile-buy,.site-footer,dialog,.reading-fallback,.purchase-links{display:none!important}.section{padding-block:35px}.container{width:100%}.hero{padding-top:0}.hero h1{font-size:2rem}.hero-cover{width:180px}.cover-stage{min-height:280px}.section-learning{background:#fff;color:#222}.section-learning h2,.section-learning h3,.learning-heading>p:last-child,.learning-list article>div>p:last-child{color:#222}body{font-size:11pt}.concern{break-inside:avoid}a{color:inherit}}

/* Keep the Japanese reading copy comfortable at every viewport size. */
.hero-lead,.hero-description,.concern>p:last-child,.about-answer>p:last-child,.learning-heading>p:last-child,.learning-list article>div>p:last-child,.sample-copy>p:not(.eyebrow):not(.sample-note),.contents-heading>p:last-child,.chapter-body,.chapter-body li,.author-story>p,.author-profile>p:not(.profile-note),.closing-copy>p:last-child,.faq details>p,.chapter-list h3,.faq summary{font-size:1rem}

/* A clear cover and a naturally cropped author portrait at both layouts. */
.hero-visual figcaption{margin:25px 0 0;text-align:center;transform:none}
.author-heading{min-width:0}
.author-photo{position:relative;width:20rem;max-width:100%;aspect-ratio:4/3;overflow:hidden;margin-top:24px}
.author-photo img{width:100%;height:100%;object-fit:cover;object-position:85% 10%;transform:scale(1.6);transform-origin:85% 10%}
@media(max-width:650px){
  .hero-visual figcaption{margin-top:20px;font-size:.875rem}
  .author-layout{gap:24px}
  .author-heading h2{font-size:1.75rem}
  .author-photo{width:17.5rem;margin:24px auto 0}
}
