:root{--c-primary:#1a3a8e;--c-primary-strong:#0d2168;--c-primary-soft:#3859c8;--c-accent:#5b7be0;--c-bg:#ffffff;--c-bg-alt:#f5f8fd;--c-bg-tint:#eef3fb;--c-surface:#ffffff;--c-text:#1b2236;--c-text-soft:#46506a;--c-text-mute:#5f6982;--c-border:#dde4f1;--c-border-soft:#e8edf6;--c-footer:#0d1f4a;--c-footer-text:#cfd8ee;--c-footer-mute:#8a98c2;--c-warn-bg:#fff8e6;--c-warn-border:#f0c14b;--c-info-bg:#ecf2ff;--c-info-border:#a4b6e8;--shadow-sm:0 1px 2px rgba(13,33,104,.06),0 1px 1px rgba(13,33,104,.04);--shadow-md:0 6px 18px rgba(13,33,104,.10),0 2px 4px rgba(13,33,104,.06);--shadow-lg:0 18px 40px rgba(13,33,104,.14);--radius-sm:8px;--radius-md:14px;--radius-lg:20px;--ring:0 0 0 3px rgba(26,58,142,.35);--container:1180px;--font-jp:"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic UI","Yu Gothic","Meiryo",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;--font-en:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}
body{margin:0;font-family:var(--font-jp);font-size:16px;line-height:1.75;color:var(--c-text);background:var(--c-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;font-feature-settings:"palt"1}
img,svg,video{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{color:var(--c-primary-strong)}
:focus-visible{outline:none;box-shadow:var(--ring);border-radius:4px}
button{font-family:inherit}
hr{border:none;border-top:1px solid var(--c-border-soft);margin:32px 0}
h1,h2,h3,h4{color:var(--c-text);line-height:1.4;font-weight:700;letter-spacing:.01em}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;padding:12px 18px;z-index:9999;border-radius:0 0 var(--radius-sm)0;text-decoration:none;font-weight:700}
.skip-link:focus{left:0}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);-webkit-backdrop-filter:saturate(150%)blur(10px);backdrop-filter:saturate(150%)blur(10px);border-bottom:1px solid var(--c-border-soft)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;padding-top:10px;padding-bottom:10px}
.brand{display:inline-flex;align-items:center;gap:14px;color:var(--c-text);text-decoration:none}
.brand-mark{width:46px;height:46px;display:inline-flex;align-items:center;justify-content:center;flex:none}
.brand-mark img{width:46px;height:46px}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-name{font-family:var(--font-en);font-weight:800;font-size:18px;letter-spacing:.12em;color:var(--c-primary)}
.brand-tag{font-family:var(--font-en);font-size:10.5px;letter-spacing:.18em;color:var(--c-text-mute);font-weight:600}
.primary-nav>ul{list-style:none;margin:0;padding:0;display:flex;gap:6px;align-items:center}
.primary-nav a{display:inline-flex;align-items:center;min-height:44px;padding:10px 16px;color:var(--c-text);text-decoration:none;font-weight:600;font-size:15px;border-radius:var(--radius-sm)}
.primary-nav a:hover{background:var(--c-bg-tint);color:var(--c-primary)}
.primary-nav a[aria-current="page"]{color:var(--c-primary);background:var(--c-bg-tint)}
.nav-toggle{display:none;width:48px;height:48px;border:1px solid var(--c-border);background:var(--c-bg);border-radius:var(--radius-sm);color:var(--c-text);cursor:pointer;align-items:center;justify-content:center;padding:0}
.nav-toggle svg{width:22px;height:22px}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 24px;min-height:48px;border-radius:var(--radius-sm);font-weight:700;font-size:15px;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background-color .15s ease,color .15s ease,border-color .15s ease}
.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.btn-primary:hover{background:var(--c-primary-strong);color:#fff;border-color:var(--c-primary-strong);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-border)}
.btn-ghost:hover{background:var(--c-bg-tint);color:var(--c-primary-strong);border-color:var(--c-primary)}
.hero{position:relative;background:linear-gradient(180deg,#f7f9fd 0%,#eef3fb 100%);padding:72px 0 80px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 20% 20%,rgba(26,58,142,.05)0,transparent 40%),radial-gradient(circle at 85% 80%,rgba(56,89,200,.06)0,transparent 45%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;background:rgba(26,58,142,.08);color:var(--c-primary);font-size:13px;font-weight:700;letter-spacing:.08em;border-radius:99px;margin-bottom:24px;font-family:var(--font-en)}
.hero h1{font-size:clamp(28px,3.6vw,46px);line-height:1.3;margin:0 0 20px;letter-spacing:.005em}
.hero p.lede{font-size:clamp(16px,1.4vw,18px);color:var(--c-text-soft);margin:0 0 32px;line-height:1.85;max-width:560px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-art{position:relative;aspect-ratio:1/1;width:100%;max-width:480px;margin-left:auto}
.hero-art img,.hero-art svg{width:100%;height:100%;object-fit:contain}
.section{padding:80px 0}
.section-alt{background:var(--c-bg-alt)}
.section-title{font-size:clamp(24px,2.4vw,32px);margin:0 0 12px;text-align:center;letter-spacing:.005em}
.section-sub{text-align:center;color:var(--c-text-mute);max-width:680px;margin:0 auto 56px;font-size:16px;line-height:1.85}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.card{background:var(--c-surface);border:1px solid var(--c-border-soft);border-radius:var(--radius-md);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--c-border)}
.card-media{aspect-ratio:16/9;background:var(--c-bg-tint);overflow:hidden;display:flex;align-items:center;justify-content:center}
.card-media img,.card-media svg{width:100%;height:100%;object-fit:cover}
.card-body{padding:24px 24px 28px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-tag{display:inline-flex;align-self:flex-start;padding:4px 12px;background:var(--c-bg-tint);color:var(--c-primary);font-size:12px;font-weight:700;letter-spacing:.06em;border-radius:99px;font-family:var(--font-en)}
.card h3{font-size:19px;line-height:1.45;margin:4px 0 6px}
.card h3 a{color:var(--c-text);text-decoration:none}
.card h3 a:hover{color:var(--c-primary)}
.card p{margin:0;color:var(--c-text-soft);font-size:14.5px;line-height:1.75}
.card-meta{margin-top:auto;padding-top:12px;display:flex;gap:14px;font-size:13px;color:var(--c-text-mute)}
.values{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.value{padding:28px 24px;background:var(--c-surface);border:1px solid var(--c-border-soft);border-radius:var(--radius-md)}
.value-icon{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--c-primary)0%,var(--c-primary-soft)100%);color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.value-icon svg{width:24px;height:24px}
.value h3{font-size:16px;margin:0 0 8px}
.value p{margin:0;font-size:14px;color:var(--c-text-soft);line-height:1.75}
.callout{margin:28px 0;padding:20px 24px;background:var(--c-info-bg);border-left:4px solid var(--c-primary);border-radius:0 var(--radius-sm)var(--radius-sm)0}
.callout p{margin:0;font-size:15.5px;line-height:1.85}
.callout strong{color:var(--c-primary-strong)}
.callout.warn{background:var(--c-warn-bg);border-left-color:var(--c-warn-border)}
.tldr{margin:0 0 36px;padding:24px 28px;background:linear-gradient(135deg,var(--c-bg-tint)0%,#e3ebf9 100%);border:1px solid var(--c-border-soft);border-radius:var(--radius-md)}
.tldr p{margin:0;font-size:15.5px;line-height:1.9}
.tldr strong{color:var(--c-primary-strong);display:inline-block;margin-right:6px}
.page-hero{padding:64px 0 48px;background:linear-gradient(180deg,#f7f9fd 0%,#eef3fb 100%);border-bottom:1px solid var(--c-border-soft)}
.page-hero h1{font-size:clamp(26px,3vw,38px);margin:8px 0 12px;letter-spacing:.005em}
.page-hero p{color:var(--c-text-mute);font-size:15px;margin:0}
.breadcrumbs{margin-bottom:8px}
.breadcrumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px;font-size:13px;color:var(--c-text-mute)}
.breadcrumbs li:not(:last-child)::after{content:"/";margin-left:6px;color:var(--c-text-mute);opacity:.6}
.breadcrumbs a{color:var(--c-text-mute);text-decoration:none}
.breadcrumbs a:hover{color:var(--c-primary);text-decoration:underline}
.breadcrumbs li[aria-current="page"]{color:var(--c-text-soft);font-weight:600}
.legal{padding:64px 0 88px}
.legal .container{max-width:820px}
.legal>.container>p{font-size:16px;line-height:1.95;color:var(--c-text);margin:0 0 22px}
.legal h2{font-size:22px;margin:44px 0 16px;padding-top:24px;border-top:1px solid var(--c-border-soft)}
.legal h2:first-of-type{border-top:0;padding-top:0;margin-top:0}
.legal h3{font-size:17px;margin:28px 0 12px}
.legal ul,.legal ol{padding-left:1.4em;margin:0 0 22px;line-height:1.9}
.legal li{margin-bottom:8px}
.legal strong{color:var(--c-text);font-weight:700}
.article-hero{padding:56px 0 32px;background:linear-gradient(180deg,#f7f9fd 0%,#eef3fb 100%);border-bottom:1px solid var(--c-border-soft)}
.article-hero h1{font-size:clamp(26px,3.2vw,40px);margin:12px 0 18px;line-height:1.4}
.article-meta-row{display:flex;flex-wrap:wrap;gap:6px 24px;color:var(--c-text-mute);font-size:14px;margin:0 0 28px;line-height:1.7}
.article-meta-row strong{color:var(--c-text);font-weight:600}
.article-cover{aspect-ratio:2/1;background:var(--c-bg-tint);border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--c-border-soft);box-shadow:var(--shadow-sm)}
.article-cover img,.article-cover svg{width:100%;height:100%;object-fit:cover}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr)300px;gap:56px;align-items:start;padding:48px 0 88px}
.prose{max-width:760px;font-size:16.5px;line-height:1.95;color:var(--c-text);min-width:0}
.prose h2{font-size:24px;margin:48px 0 18px;padding-top:24px;border-top:1px solid var(--c-border-soft);scroll-margin-top:88px}
.prose h2:first-child{border-top:0;padding-top:0;margin-top:0}
.prose h3{font-size:18.5px;margin:36px 0 14px;scroll-margin-top:88px}
.prose p{margin:0 0 18px}
.prose ul,.prose ol{margin:0 0 22px;padding-left:1.4em}
.prose li{margin-bottom:8px}
.prose strong{color:var(--c-text);font-weight:700}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;background:var(--c-bg-tint);padding:2px 6px;border-radius:4px;color:var(--c-primary-strong)}
.aside{position:sticky;top:96px;align-self:start;display:flex;flex-direction:column;gap:18px}
.aside-card{padding:22px;background:var(--c-surface);border:1px solid var(--c-border-soft);border-radius:var(--radius-md)}
.aside-card h2{font-size:13px;text-transform:uppercase;letter-spacing:.1em;margin:0 0 14px;color:var(--c-text-mute);font-family:var(--font-en);font-weight:700}
.aside-card ul{list-style:none;padding:0;margin:0;font-size:14.5px;line-height:1.65}
.aside-card li{margin-bottom:10px}
.aside-card li:last-child{margin-bottom:0}
.aside-card a{color:var(--c-text);text-decoration:none;display:inline-block;padding:2px 0}
.aside-card a:hover{color:var(--c-primary);text-decoration:underline}
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:8px}
.contact-card{padding:28px;border:1px solid var(--c-border-soft);border-radius:var(--radius-md);background:var(--c-surface);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.contact-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--c-border)}
.contact-card .icon{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,var(--c-primary)0%,var(--c-primary-soft)100%);display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:16px}
.contact-card .icon svg{width:22px;height:22px}
.contact-card h3{font-size:17px;margin:0 0 6px}
.contact-card p{margin:0 0 14px;color:var(--c-text-soft);font-size:14px;line-height:1.75}
.contact-card a.contact-link{font-weight:700;color:var(--c-primary);text-decoration:none;display:inline-flex;align-items:center;gap:6px;font-size:14px}
.contact-card a.contact-link:hover{text-decoration:underline}
.about-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center;padding:72px 0}
.about-grid img,.about-grid svg{width:100%;height:auto;border-radius:var(--radius-md)}
.about-grid h2{font-size:clamp(24px,2.4vw,32px);margin:0 0 20px}
.about-grid p{font-size:16px;line-height:1.95;color:var(--c-text-soft);margin:0 0 16px}
.steps{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:8px}
.step{padding:24px;border:1px solid var(--c-border-soft);border-radius:var(--radius-md);background:var(--c-surface)}
.step-num{font-family:var(--font-en);font-size:13px;font-weight:800;color:var(--c-primary);letter-spacing:.1em;margin:0 0 8px}
.step h3{font-size:17px;margin:0 0 8px}
.step p{margin:0;color:var(--c-text-soft);font-size:14.5px;line-height:1.75}
.faq{max-width:820px;margin:0 auto}
.faq details{border:1px solid var(--c-border-soft);border-radius:var(--radius-md);background:var(--c-surface);margin-bottom:14px;overflow:hidden}
.faq summary{padding:18px 22px;font-weight:700;cursor:pointer;font-size:15.5px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--font-en);font-size:22px;color:var(--c-primary);font-weight:300;transition:transform .2s ease}
.faq details[open] summary::after{content:"−"}
.faq details>div{padding:0 22px 20px;color:var(--c-text-soft);font-size:15px;line-height:1.85}
.faq details>div p{margin:0 0 12px}
.faq details>div p:last-child{margin-bottom:0}
.site-footer{background:var(--c-footer);color:var(--c-footer-text);padding:64px 0 32px;margin-top:0}
.site-footer .brand-name{color:#fff}
.site-footer .brand-tag{color:var(--c-footer-mute)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(207,216,238,.15)}
.footer-brand p{margin:18px 0;font-size:14px;line-height:1.85;color:var(--c-footer-mute);max-width:340px}
.footer-col h2{font-size:13px;text-transform:uppercase;letter-spacing:.12em;margin:0 0 18px;color:#fff;font-family:var(--font-en);font-weight:700}
.footer-col ul{list-style:none;margin:0;padding:0;font-size:14.5px;line-height:1.7}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--c-footer-text);text-decoration:none}
.footer-col a:hover{color:#fff;text-decoration:underline}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(255,255,255,.07);color:#fff;transition:background-color .15s ease,transform .15s ease}
.socials a:hover{background:var(--c-primary-soft);transform:translateY(-2px)}
.socials svg{width:18px;height:18px}
.footer-bottom{padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--c-footer-mute)}
.error-wrap{padding:120px 0;text-align:center}
.error-wrap .number{display:block;font-family:var(--font-en);font-size:clamp(80px,18vw,160px);line-height:.95;font-weight:900;background:linear-gradient(135deg,var(--c-primary)0%,var(--c-primary-soft)100%);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:18px;letter-spacing:-.02em}
.error-wrap h1{font-size:clamp(22px,2.4vw,30px);margin:0 0 14px}
.error-wrap p{color:var(--c-text-soft);font-size:16px;line-height:1.85;max-width:520px;margin:0 auto 32px}
.error-wrap .actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.intent-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:8px}
.intent-list li{padding:18px 22px;background:var(--c-bg-alt);border:1px solid var(--c-border-soft);border-radius:var(--radius-sm);font-size:14.5px;color:var(--c-text-soft);line-height:1.75;list-style:none}
.intent-list strong{color:var(--c-primary-strong)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 0}
.tag-row span{font-size:12px;font-family:var(--font-en);padding:4px 12px;background:var(--c-bg-tint);color:var(--c-primary);border-radius:99px;font-weight:700;letter-spacing:.05em}
@media (max-width: 1080px){.about-grid{gap:36px}.article-layout{grid-template-columns:1fr;gap:32px}.aside{position:static;flex-direction:column;display:grid;grid-template-columns:1fr 1fr;gap:18px}}
@media (max-width: 880px){.cards{grid-template-columns:1fr 1fr}.values{grid-template-columns:1fr 1fr}.steps{grid-template-columns:1fr}.contact-grid{grid-template-columns:1fr}.about-grid{grid-template-columns:1fr;padding:56px 0}.hero{padding:48px 0 56px}.hero-grid{grid-template-columns:1fr;gap:36px}.hero-art{margin:0 auto;max-width:340px}.intent-list{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:36px}}
@media (max-width: 720px){.cards{grid-template-columns:1fr}.values{grid-template-columns:1fr}.aside{grid-template-columns:1fr}.primary-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--c-border-soft);box-shadow:var(--shadow-md);padding:16px 24px}.primary-nav.is-open{display:block}.primary-nav>ul{flex-direction:column;align-items:stretch;gap:2px}.primary-nav a{width:100%;padding:14px 16px}.nav-toggle{display:inline-flex}.section{padding:56px 0}.legal{padding:48px 0 64px}.article-hero{padding:40px 0 24px}.article-meta-row{font-size:13.5px;gap:6px 18px}.prose{font-size:16px}.footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:32px}.footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}}
@media (max-width: 540px){.brand-tag{display:none}.container{padding:0 18px}.hero h1{font-size:28px}.section-title{font-size:22px}.btn{padding:12px 20px}}
@media print{.site-header,.site-footer,.aside,.nav-toggle,.skip-link{display:none}.prose{max-width:100%}body{font-size:11pt;color:#000;background:#fff}}