:root{--red:#a5151d;--dark:#171719;--ink:#252529;--muted:#67676d;--line:#d9d7d4;--paper:#fff;--soft:#f5f3f1;--soft2:#eee9e6;--max:1160px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--paper);font-family:"Yu Gothic","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;line-height:1.85}
a{color:inherit}
button{font:inherit}
.container{width:min(calc(100% - 48px),var(--max));margin-inline:auto}
.section{padding:108px 0}
.surface{background:var(--soft)}
.eyebrow{margin:0 0 18px;color:var(--red);font:700 11px/1.3 Arial,sans-serif;letter-spacing:.18em}
.eyebrow.light{color:#f3bfc2}
.skip-link{position:fixed;left:10px;top:-100px;z-index:100;background:#fff;padding:10px 14px}
.skip-link:focus{top:10px}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
.header-inner{height:78px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:700}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;background:var(--red);color:#fff}
.global-nav{display:flex;align-items:center;gap:26px}
.global-nav a{font-size:13px;text-decoration:none}
.global-nav a:hover,.global-nav a:focus-visible{color:var(--red)}
.global-nav .nav-cta{padding:10px 18px;background:var(--dark);color:#fff}
.global-nav .nav-cta:hover,.global-nav .nav-cta:focus-visible{background:var(--red);color:#fff}
.menu-button{display:none;border:1px solid var(--line);background:#fff;padding:8px 12px}
.breadcrumb{padding-top:24px}
.breadcrumb ol{display:flex;gap:10px;align-items:center;margin:0;padding:0;list-style:none;color:var(--muted);font-size:12px}
.breadcrumb li+li:before{content:"/";margin-right:10px;color:#aaa}
.breadcrumb a{text-decoration:none}
.hero{padding:72px 0 104px}
.hero-grid{display:grid;grid-template-columns:1.14fr .86fr;gap:72px;align-items:center}
.hero h1{margin:0;font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:clamp(48px,7vw,86px);font-weight:600;line-height:1.22;letter-spacing:.01em}
.hero-statement{margin:28px 0 18px;font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:clamp(26px,3.3vw,44px);line-height:1.55}
.hero-lead{max-width:710px;margin:0;color:var(--muted);font-size:15px}
.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:34px}
.button{display:inline-flex;min-height:52px;align-items:center;justify-content:center;padding:11px 22px;border:1px solid var(--dark);text-decoration:none;font-weight:700;font-size:13px;transition:.2s ease}
.button.primary{background:var(--red);border-color:var(--red);color:#fff}
.button.primary:hover,.button.primary:focus-visible{background:#861017;border-color:#861017}
.button.secondary{background:#fff}
.button.secondary:hover,.button.secondary:focus-visible{background:var(--dark);color:#fff}
.text-link{color:var(--red);font-weight:700;font-size:13px;text-underline-offset:4px}
.definition-card{position:relative;padding:42px 40px 38px;background:var(--dark);color:#fff;box-shadow:20px 20px 0 var(--soft2)}
.definition-card:before{content:"";position:absolute;left:0;top:0;width:7px;height:100%;background:var(--red)}
.definition-card>span{color:#e76e74;font:700 10px/1.3 Arial,sans-serif;letter-spacing:.14em}
.definition-card p{margin:40px 0 30px;font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:clamp(24px,2.6vw,34px);line-height:1.75}
.definition-card strong{color:#fff;text-decoration:underline;text-decoration-color:var(--red);text-decoration-thickness:3px;text-underline-offset:7px}
.definition-card small{display:block;color:#aaa;font-size:12px}
.definition-section,.background-grid,.principle-inner{display:grid;grid-template-columns:.82fr 1.18fr;gap:100px;align-items:start}
h2{margin:0;font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:clamp(34px,4.6vw,58px);font-weight:600;line-height:1.45}
.prose{max-width:720px}
.prose p{margin:0 0 22px}
.lead-copy{font-size:20px;font-weight:700;line-height:1.8}
.quote-block{margin-top:46px;padding:30px 34px;border-left:5px solid var(--red);background:#fff}
.quote-block p{margin:0;font-family:Georgia,"Times New Roman",serif;font-size:clamp(23px,3vw,34px);line-height:1.5}
.quote-block span{display:block;margin-top:18px;color:var(--muted);font:700 10px Arial,sans-serif;letter-spacing:.12em}
.section-head{display:grid;grid-template-columns:.9fr 1.1fr;gap:76px;align-items:end;margin-bottom:48px}
.section-head>p{max-width:620px;margin:0;color:var(--muted)}
.four-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.four-grid article{min-height:280px;padding:28px 26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.four-grid span,.example-card>span{color:var(--red);font:700 11px Arial,sans-serif;letter-spacing:.1em}
.four-grid h3{margin:46px 0 16px;font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:30px}
.four-grid p{margin:0;color:var(--muted);font-size:13px}
.dark-section{background:var(--dark);color:#fff}
.light-head>p{color:#aaa}
.example-grid{display:grid;grid-template-columns:repeat(2,1fr);border-top:1px solid #444;border-left:1px solid #444}
.example-card{min-height:330px;padding:34px;border-right:1px solid #444;border-bottom:1px solid #444}
.example-card.featured{background:#212124}
.example-card h3{margin:52px 0 18px;font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:clamp(25px,2.6vw,34px);font-weight:500;line-height:1.55}
.example-card p{margin:0;color:#b8b8bc;font-size:14px}
.example-card small{display:block;margin-top:18px;color:#777}
.background-grid .prose strong{color:var(--red)}
.source-box{margin-top:42px;padding-top:28px;border-top:1px solid var(--line)}
.source-box h3{margin:0 0 14px;font-size:15px}
.source-box ul{margin:0;padding-left:20px}
.source-box li{margin:8px 0;color:var(--muted);font-size:12px}
.source-box a{text-underline-offset:3px}
.question-list{margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}
.question-list li{display:grid;grid-template-columns:90px 1fr;gap:30px;padding:28px 0;border-bottom:1px solid var(--line)}
.question-list li>span{color:var(--red);font:700 12px Arial,sans-serif;letter-spacing:.12em}
.question-list strong{font-size:19px}
.question-list p{margin:7px 0 0;color:var(--muted);font-size:13px}
.principle-section{background:var(--red);color:#fff}
.principle-inner>div:last-child{max-width:700px}
.principle-inner p{color:#f3d7d8}
.principle-en{margin:0 0 28px!important;color:#fff!important;font-family:Georgia,"Times New Roman",serif;font-size:clamp(32px,4vw,52px);line-height:1.35}
.cta-section{padding:88px 0}
.cta-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:60px;align-items:center}
.cta-inner h2{font-size:clamp(31px,4vw,48px)}
.cta-inner p{max-width:650px;color:var(--muted)}
.cta-actions{display:flex;flex-direction:column;align-items:stretch;gap:10px}
.site-footer{padding:34px 0;background:#111113;color:#fff}
.footer-inner{display:grid;grid-template-columns:auto 1fr auto;gap:30px;align-items:center}
.footer-inner>span{font-weight:700}
.footer-inner nav{display:flex;justify-content:center;gap:20px;flex-wrap:wrap}
.footer-inner a{color:#bbb;text-decoration:none;font-size:12px}
.footer-inner a:hover,.footer-inner a:focus-visible{color:#fff}
.footer-inner small{color:#777}
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-visible{opacity:1;transform:none}
@media(max-width:900px){
  .global-nav{gap:16px}
  .hero-grid,.definition-section,.background-grid,.principle-inner,.section-head,.cta-inner{grid-template-columns:1fr;gap:42px}
  .hero{padding-top:54px}
  .definition-card{max-width:680px}
  .four-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .container{width:min(calc(100% - 32px),var(--max))}
  .section{padding:78px 0}
  .header-inner{height:68px}
  .menu-button{display:block}
  .global-nav{position:absolute;left:0;right:0;top:68px;display:none;flex-direction:column;align-items:stretch;gap:0;padding:10px 16px 18px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 10px 24px rgba(0,0,0,.08)}
  .global-nav.is-open{display:flex}
  .global-nav a{padding:12px 6px;border-bottom:1px solid #eee}
  .global-nav .nav-cta{margin-top:8px;text-align:center;border-bottom:0}
  .breadcrumb{padding-top:18px}
  .hero{padding-bottom:80px}
  .hero h1{font-size:clamp(42px,13vw,64px)}
  .definition-card{padding:34px 28px 30px;box-shadow:10px 10px 0 var(--soft2)}
  .four-grid,.example-grid{grid-template-columns:1fr}
  .four-grid article,.example-card{min-height:auto}
  .question-list li{grid-template-columns:54px 1fr;gap:14px}
  .footer-inner{grid-template-columns:1fr;gap:18px;text-align:center}
  .footer-inner nav{gap:12px 18px}
}
@media(max-width:430px){
  .brand{font-size:14px}
  .hero-actions{align-items:flex-start;flex-direction:column}
  .hero-actions .button{width:100%}
  .quote-block{padding:24px 22px}
  .cta-actions .button{width:100%}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
}