.content-main{max-width:960px;padding-top:70px}.content-hero{max-width:760px;margin-bottom:52px}.content-hero .eyebrow{margin-bottom:16px}.content-hero h1{font-family:"Noto Sans JP",sans-serif;font-size:clamp(36px,6vw,62px);letter-spacing:-.05em;line-height:1.18;margin:0 0 22px}.content-hero>p:last-child{font-size:15px;line-height:1.9;color:var(--muted);max-width:650px}.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:28px;align-items:start}.article-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:36px;box-shadow:var(--shadow)}.article-card section+section{border-top:1px solid var(--line);margin-top:34px;padding-top:34px}.article-card h2{font-size:20px;letter-spacing:-.03em;margin:0 0 14px}.article-card h3{font-size:14px;margin:24px 0 8px}.article-card p,.article-card li{font-size:13px;line-height:1.9;color:var(--muted)}.article-card ul,.article-card ol{padding-left:1.4em}.numbered{counter-reset:step}.numbered article{display:grid;grid-template-columns:44px 1fr;gap:18px}.numbered article+article{margin-top:28px}.numbered article:before{counter-increment:step;content:counter(step);width:38px;height:38px;display:grid;place-items:center;background:var(--ink);color:var(--lime);border-radius:11px;font-size:12px;font-weight:700}.numbered h2{font-size:16px;margin:4px 0 7px}.numbered p{margin:0}.side-stack{display:grid;gap:18px}.side-note{background:#eaf2ea;border-radius:17px;padding:22px}.side-note strong{font-size:13px}.side-note p{font-size:11px;line-height:1.8;color:var(--muted);margin:8px 0 0}.ad-slot-rectangle{min-height:250px}.format-table{width:100%;border-collapse:collapse}.format-table th,.format-table td{text-align:left;border-bottom:1px solid var(--line);padding:15px 10px;font-size:12px}.format-table th{color:var(--muted);font-size:10px}.format-table td:first-child{font-weight:700;color:var(--green)}.back-link{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:12px;font-weight:700;text-decoration:none;margin-bottom:25px}@media(max-width:780px){.content-main{padding-top:45px}.content-grid{grid-template-columns:1fr}.article-card{padding:24px}.side-stack{grid-template-columns:1fr}.ad-slot-rectangle{min-height:110px}.content-hero{margin-bottom:35px}}