:root{--ink:#172a40;--paper:#faf6ed;--orange:#ec5d2b;--blue:#234ed0}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,'Noto Sans CJK JP',sans-serif;line-height:1.85}
a{color:inherit}
a,button,summary{touch-action:manipulation}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:6px}
.skip{position:absolute;left:12px;top:-100px;background:white;padding:12px;z-index:10}
.skip:focus{top:10px}
.notice{background:var(--ink);color:white;text-align:center;font-size:13px;padding:7px 15px}
header{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:23px 6%;border-bottom:1px solid #172a4030}
.brand{text-decoration:none;font-size:24px;font-weight:800;letter-spacing:.1em}
nav{display:flex;gap:28px;font-size:14px}
nav a{text-decoration:none}
.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:6%;padding:70px 6% 60px;align-items:center}
.kicker{font-size:14px;letter-spacing:.14em;font-weight:750;color:var(--blue)}
h1{font-size:clamp(44px,5.8vw,84px);line-height:1.3;letter-spacing:-.045em;margin:25px 0}
h1 span{color:var(--orange)}
h1 .phrase{color:inherit;white-space:nowrap}
.lead{max-width:31em;font-size:17px}
.button{display:inline-block;border:0;background:var(--ink);color:white;text-decoration:none;padding:17px 28px;margin-top:24px;font:inherit;font-weight:700;cursor:pointer}
.art{position:relative}
.art img{width:100%;display:block;aspect-ratio:4/5;object-fit:cover}
.caption{display:flex;justify-content:space-between;gap:20px;font-size:12px;padding-top:12px}
.band{background:var(--blue);color:white;display:flex;justify-content:space-around;gap:20px;padding:23px 6%;font-size:14px;letter-spacing:.1em}
.section{padding:80px 6%;border-bottom:1px solid #172a4030}
.section-head{display:grid;grid-template-columns:1fr 2fr;gap:30px;margin-bottom:40px}
h2{font-size:clamp(28px,3.5vw,46px);line-height:1.5;margin:0;letter-spacing:-.025em}
.section-head p{margin:0;max-width:34em}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.card{border-top:2px solid var(--ink);padding-top:20px}
.number{font-size:46px;color:var(--orange);line-height:1}
h3{font-size:21px;line-height:1.6;margin-bottom:12px}
.card p{font-size:16px}
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.steps li{background:white;padding:30px}
.steps b{color:var(--blue);font-size:14px}
.steps h3{margin-top:12px}
.faq{max-width:850px;margin:0 auto}
details{border-bottom:1px solid #172a4040;padding:22px 0}
summary{cursor:pointer;font-weight:700;font-size:18px}
details p{padding:0 22px;font-size:16px}
.closing{padding:80px 6%;text-align:center;background:#efdb8d}
.closing h2{font-size:clamp(32px,4vw,54px)}
.closing p{max-width:42em;margin:20px auto}
.closing small{display:block;margin-top:20px;font-size:14px}
#demo-message{background:#fff;padding:20px;max-width:650px;margin:24px auto 0;border:1px solid var(--ink)}
#demo-message:empty{display:none}
footer{padding:30px 6%;font-size:13px;display:flex;gap:30px;justify-content:space-between}
 @media(max-width:700px){header{padding:18px 6%;align-items:flex-start}
.brand{font-size:21px;white-space:nowrap}
nav{gap:13px;flex-wrap:wrap;justify-content:flex-end;font-size:13px}
.hero{grid-template-columns:1fr;padding-top:42px;gap:40px}
h1{font-size:clamp(32px,8.5vw,48px)}
.art img{aspect-ratio:1}
.band{flex-wrap:wrap;gap:5px 20px;font-size:12px}
.section{padding-top:55px;padding-bottom:55px}
.section-head,.cards,.steps{grid-template-columns:1fr}
.section-head{gap:15px}
.cards{gap:25px}
.steps{gap:12px}
.steps li{padding:23px}
.closing{padding:55px 6%}
footer{flex-direction:column;gap:6px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}
}
@media print{.notice,nav,.button,#demo-message{display:none}
.hero,.section,.closing{break-inside:avoid;padding:24px}
.hero{grid-template-columns:1fr 1fr}
.section{page-break-before:auto}
}


/* Long content stays within flexible layout tracks. Browser QA pending. */
.hero>*,.section-head>*,.cards>*,.steps>*{min-width:0}

img{max-width:100%;height:auto}