/* Reading sizes and wrapping are shared by all three languages. */
:root{--red:#b93627;--muted:#555950;--sans:"Noto Sans SC","Noto Sans JP","Microsoft YaHei",system-ui,sans-serif}
h1,h2,h3{text-wrap:balance}p{text-wrap:pretty}button,a{touch-action:manipulation}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #c57927;outline-offset:5px}[hidden]{display:none!important}
.site-header{height:auto;min-height:80px;gap:24px;background:var(--paper);backdrop-filter:none}.site-nav{gap:20px;font-size:14px}.language-switch{position:relative;font-size:14px;white-space:nowrap}.language-switch summary{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:44px;padding:8px 12px;border:1px solid var(--line);cursor:pointer;list-style:none}.language-switch summary::-webkit-details-marker{display:none}.language-switch summary span{font-size:18px;line-height:1}.language-options{position:absolute;right:0;top:calc(100% + 8px);min-width:150px;display:flex;flex-direction:column;padding:6px;background:var(--white);border:1px solid var(--line);box-shadow:0 8px 24px #171a171a;z-index:30}.language-options a{padding:10px 14px;min-height:44px}.language-options a:hover,.language-options a:focus-visible{background:#e8e1d5}.language-options a[aria-current=page]{font-weight:700;background:#e8e1d5}
.hero{gap:48px;min-height:660px;padding-top:76px;padding-bottom:76px}.hero h1{font-size:clamp(40px,4.3vw,62px);letter-spacing:-.035em;line-height:1.23}.hero h1 em{color:#ef8c72}.hero-lead{font-size:18px;line-height:1.85}.eyebrow{text-transform:none;letter-spacing:.04em}.tab-list{height:auto}.tab-list button{width:auto;min-width:80px;padding:10px 16px;font-family:var(--sans);font-size:13px;color:#c4c7bf}.tab-list button,.copy-button{cursor:pointer}[role=tabpanel]{padding:16px;align-items:flex-start}[role=tabpanel] code{white-space:normal;overflow-wrap:anywhere;min-width:0;line-height:1.7}.copy-button{font-size:13px;flex-shrink:0}.button{font-size:14px;min-height:48px;text-align:center}.hero-actions{flex-wrap:wrap}.button.primary:hover{background:#a63023}
.map-title{gap:16px;flex-wrap:wrap;font-family:var(--sans)}.map-title span{font-size:16px}.map-title small{font-size:12px;color:#c1c5bb}.quest-map li{gap:17px;min-height:78px}.quest-map li div{min-width:0}.quest-map li b{font-size:16px}.quest-map li small{font-size:13px;color:#bdc2b7}.quest-map li:not(:last-child):after{top:55px}.section{padding-top:88px;padding-bottom:88px}.section-heading h2{font-size:clamp(30px,3.4vw,44px);line-height:1.3;letter-spacing:-.025em}.section-heading>p:last-child{font-size:17px;line-height:1.85;max-width:70ch}.steps-grid article{padding:28px;min-width:0}.steps-grid h3{font-size:23px;margin:24px 0 12px}.steps-grid p{font-size:16px}blockquote{font-size:15px;line-height:1.85;border-left:0;border:1px solid var(--line);overflow-wrap:anywhere}.mini-code{gap:8px;align-items:flex-start}.mini-code code{font-size:12px;white-space:normal;overflow-wrap:anywhere;min-width:0}.mini-code button{font-size:13px;padding:2px}
.skill-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;border:0}.skill-card{min-height:0;display:grid;grid-template-columns:1fr;gap:12px;padding:26px 0;border:0;border-top:1px solid var(--line);background:transparent;transition:none}.skill-card:hover{background:transparent;transform:none;box-shadow:none}.skill-card h3,.skill-card.featured h3{font:700 21px/1.4 var(--sans);margin:0}.skill-card p{font-size:16px;line-height:1.8}.skill-card code{font-size:13px;overflow-wrap:anywhere;color:var(--muted)}.skill-card.featured{grid-column:1/-1;background:var(--dark);color:var(--paper);padding:28px;margin-bottom:12px}.skill-card.featured p{color:#d5d7cf;max-width:70ch}.skill-card.featured code{color:var(--lime)}
.contract-section .section-heading>p:last-child{color:#c1c5bb}.contract-sheet h3{font-size:19px}.contract-sheet dl div{grid-template-columns:minmax(90px,.7fr) 1.5fr;font-size:15px;gap:16px}.contract-result{padding:30px}.contract-result h3{margin-top:0;font-size:27px}.contract-result li p{font-size:15px;line-height:1.8;color:#c1c5bb}.contract-result li b{font-size:17px}.example-note{font-size:14px;color:#c1c5bb;line-height:1.8;border-top:1px solid #43473f;padding-top:18px}.deliverable-grid{display:block;border:0}.deliverable-grid article,.deliverable-grid article:last-child{display:grid;grid-template-columns:180px 1fr;gap:24px;min-height:0;border:0;border-top:1px solid var(--line);padding:22px 0}.deliverable-grid h3{margin:0;font-size:19px}.deliverable-grid p{font-size:16px;line-height:1.8}.validator-block{margin-top:48px;align-items:center}.validator-copy{padding:32px}.validator-copy h3{margin-top:0;font-size:25px;line-height:1.4}.validator-copy p{font-size:16px;line-height:1.8}.terminal{min-width:0}.terminal pre{overflow-wrap:anywhere;font-size:13px;padding:24px}.terminal>div span{font-size:11px;color:#bfc4b9}.faq-list summary{gap:24px;font-size:18px;align-items:baseline;text-wrap:wrap}.faq-list summary span{flex:0 0 20px;text-align:center}.faq-list details p{font-size:16px;line-height:1.9;max-width:none;padding-right:44px;text-wrap:wrap;word-break:normal;overflow-wrap:break-word}.final-cta{padding:76px 24px}.final-cta h2{max-width:900px;margin:24px auto 32px;font-size:clamp(32px,4vw,50px);letter-spacing:-.025em;line-height:1.3}.footer-brand small{color:#bfc4b9;font-size:13px}footer nav{font-size:14px;flex-wrap:wrap}.copyright{color:#bfc4b9;font-size:12px}.toast{font-size:15px;max-width:calc(100vw - 32px);text-align:center}
@media(max-width:1100px){.site-header{flex-wrap:wrap;gap:12px 24px;padding-top:12px;padding-bottom:12px}.site-nav{order:3;flex-basis:100%;justify-content:center}.language-switch{margin-left:auto}html{scroll-padding-top:125px}}
@media(max-width:980px){.hero{grid-template-columns:1fr}.quest-map{width:100%}.contract-demo,.validator-block{grid-template-columns:1fr}.terminal{margin-top:0}.steps-grid{grid-template-columns:1fr}.hero h1{max-width:800px}}
@media(max-width:720px){html{scroll-padding-top:125px}.site-header{gap:8px 16px;min-height:104px}.brand{margin-right:auto}.nav-toggle{display:block}.language-switch{order:4;margin-left:auto}.site-nav{top:100%;font-size:16px}.hero{padding-top:46px;padding-bottom:54px}.hero h1{font-size:clamp(34px,8vw,48px)}.hero-lead{font-size:17px}.section{padding-top:58px;padding-bottom:58px}.section-heading{margin-bottom:28px}.skill-grid{grid-template-columns:1fr}.contract-sheet{padding:22px}.contract-sheet dl div{grid-template-columns:1fr;gap:5px}.contract-result{padding:24px}.deliverable-grid article,.deliverable-grid article:last-child{grid-template-columns:1fr;gap:8px}.map-title small{display:block}.quest-map{box-shadow:none}.quest-map li{min-height:84px}.quest-map li small{font-size:14px}.validator-copy{padding:24px}.terminal{margin:0 18px 24px;box-shadow:none}.terminal pre{font-size:12px}.footer-brand small{max-width:none}.final-cta>div{align-items:stretch}}
@media(max-width:480px){html[lang=ja] .hero h1{font-size:clamp(27px,7vw,34px);line-height:1.45}}
/* Brand, navigation, and utilities keep separate, stable positions. */
.site-header{display:grid;grid-template-columns:auto 1fr auto;gap:32px;min-height:76px;padding-top:0;padding-bottom:0}
.site-header>.site-nav{order:initial;justify-content:center;gap:24px;flex-basis:auto;white-space:nowrap}
.header-actions{display:flex;align-items:center;gap:12px}
.header-actions .language-switch{order:initial;margin:0}
.github-icon,.header-actions .nav-toggle{width:44px;height:44px;align-items:center;justify-content:center;padding:0;flex-shrink:0;border:0;background:transparent;color:var(--ink);border-radius:6px}
.github-icon{display:flex}.github-icon:hover,.header-actions .nav-toggle:hover{background:#e8e1d5}
.header-actions .language-switch summary{min-width:104px;gap:16px;border-radius:6px}
.header-actions .nav-toggle{display:none}
html{scroll-padding-top:100px}
@media(max-width:1100px){.site-header{gap:20px;padding-top:0;padding-bottom:0}.site-header>.site-nav{gap:18px}}
@media(max-width:1000px){.site-header{grid-template-columns:1fr auto;min-height:72px}.header-actions .nav-toggle{display:flex}.site-header>.site-nav{display:none;position:absolute;top:100%;left:0;right:0;padding:16px 24px;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:4px}.site-header>.site-nav.open{display:flex}.site-header>.site-nav a{padding:12px 0}.site-header>.site-nav a:after{display:none}}
@media(max-width:540px){.site-header{min-height:68px;padding-left:16px;padding-right:16px;gap:12px}.site-header .brand span{display:none}.site-header .brand img{width:36px;height:36px}.header-actions{gap:8px}.header-actions .language-switch summary{min-width:100px}.hero{padding-top:40px}html{scroll-padding-top:88px}}