*{box-sizing:border-box}
:root{--ink:#202020;--muted:#666;--line:#ddd7cc;--paper:#fff;--soft:#f5f2ec;--accent:#6d563c}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--paper);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic",Meiryo,sans-serif;line-height:1.9}
a{color:inherit}.wrap{width:min(1120px,calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.96);border-bottom:1px solid #eee}
.header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{text-decoration:none;font-weight:700}nav{display:flex;gap:22px;flex-wrap:wrap}nav a{text-decoration:none;font-size:.9rem;color:#444}
.hero{padding:100px 0;background:linear-gradient(180deg,#f7f4ee,#fff)}.hero.sub{padding:65px 0}
.eyebrow,.section-kicker{font-size:.75rem;letter-spacing:.18em;color:var(--accent);font-weight:700}
h1{font-family:Georgia,"Yu Mincho","Hiragino Mincho ProN",serif;font-size:clamp(2.2rem,5vw,4.1rem);line-height:1.35;margin:.25em 0 .45em;font-weight:600}
h2{font-family:Georgia,"Yu Mincho","Hiragino Mincho ProN",serif;font-size:clamp(1.65rem,3vw,2.45rem);margin:.15em 0 .8em}
.lead{max-width:800px;font-size:1.08rem;color:#4d4d4d}.section{padding:76px 0;border-top:1px solid #eee}.section.alt{background:var(--soft)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{display:block;padding:28px;border:1px solid var(--line);background:#fff;text-decoration:none}.card h3{margin:0 0 10px}.card p{color:var(--muted)}.card span,.text-link{color:var(--accent);font-weight:700;text-decoration:none}
.article{max-width:850px}.article p{margin:0 0 1.25em}.note{padding:22px 25px;border-left:4px solid var(--accent);background:var(--soft);margin:28px 0}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:30px 0}.step{border:1px solid var(--line);padding:22px;background:#fff}.step b{display:block;color:var(--accent)}
.resource{padding:18px 0;border-top:1px solid var(--line)}.breadcrumb{font-size:.86rem;color:var(--muted);margin-bottom:18px}.breadcrumb a{text-decoration:none}
.split{display:grid;grid-template-columns:1fr 1.25fr;gap:70px}.news-item{display:grid;grid-template-columns:130px 1fr;gap:25px;padding:20px 0;border-top:1px solid var(--line)}
footer{padding:32px 0;border-top:1px solid #eee;color:#777;font-size:.85rem}
@media(max-width:820px){.header-inner{align-items:flex-start;flex-direction:column;padding:18px 0}.cards,.steps,.split{grid-template-columns:1fr}.hero{padding:65px 0}.section{padding:55px 0}}