:root{--ink:#092033;--muted:#5b6b7a;--brand:#0c4a6e;--brand2:#0891b2;--bg:#f6fbff;--line:#dbe7ef;--card:#fff;--accent:#e0f7ff;--shadow:0 20px 60px rgba(9,32,51,.12)}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic",YuGothic,"Noto Sans JP",Segoe UI,sans-serif;color:var(--ink);background:linear-gradient(180deg,#f6fbff 0%,#fff 42%,#f8fbfd 100%);line-height:1.75}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px clamp(18px,4vw,56px);background:rgba(255,255,255,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none}.brand-mark{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;color:#fff;font-weight:800;background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:0 10px 30px rgba(8,145,178,.25)}.brand small{display:block;color:var(--muted);font-size:12px;letter-spacing:.08em}.nav{display:flex;flex-wrap:wrap;gap:12px;font-size:14px}.nav a{padding:8px 10px;border-radius:999px;color:var(--ink)}.nav a:hover{background:var(--accent);text-decoration:none}.hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);gap:28px;align-items:center;padding:72px clamp(18px,6vw,80px);background:radial-gradient(circle at 20% 20%,rgba(8,145,178,.18),transparent 32%),radial-gradient(circle at 80% 10%,rgba(12,74,110,.14),transparent 26%)}.kicker{margin:0 0 10px;color:var(--brand2);font-weight:700;letter-spacing:.12em;text-transform:uppercase}.hero h1{font-size:clamp(34px,6vw,68px);line-height:1.08;margin:0 0 20px;letter-spacing:-.05em}.lead{font-size:clamp(16px,2vw,20px);color:#244154;max-width:800px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:999px;border:1px solid var(--brand);font-weight:700}.button.primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border:0}.button.secondary{color:var(--brand);background:#fff}.hero-card{background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:28px;padding:26px;box-shadow:var(--shadow)}.badge{display:inline-block;padding:5px 10px;border-radius:999px;background:var(--accent);font-size:12px;font-weight:700;color:var(--brand)}dl{margin:0}.hero-card div{display:grid;grid-template-columns:92px 1fr;gap:10px;padding:12px 0;border-bottom:1px solid var(--line)}.hero-card div:last-child{border-bottom:0}dt{color:var(--muted);font-size:13px}dd{margin:0;font-weight:700}.section{padding:54px clamp(18px,6vw,80px)}.section h2{font-size:clamp(26px,4vw,42px);line-height:1.2;letter-spacing:-.04em;margin:0 0 24px}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:0 8px 30px rgba(9,32,51,.06)}.card h3{margin:0 0 10px;font-size:20px}.card p{color:#31495a}.card a{font-weight:700}.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.split>div{background:#fff;border:1px solid var(--line);border-radius:24px;padding:26px}.info{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:22px}.info th,.info td{padding:16px 18px;border-bottom:1px solid var(--line);vertical-align:top}.info th{width:220px;text-align:left;background:#f2f8fb;color:#244154}.info tr:last-child th,.info tr:last-child td{border-bottom:0}.checklist{display:grid;gap:10px;padding:0;list-style:none}.checklist li{position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px 16px 14px 44px}.checklist li:before{content:"";position:absolute;left:18px;top:22px;width:10px;height:10px;border-radius:999px;background:var(--brand2)}.note{padding:14px 16px;border-left:4px solid var(--brand2);background:#f0fbff;border-radius:12px;color:#244154}.site-footer{padding:34px clamp(18px,6vw,80px);border-top:1px solid var(--line);background:#092033;color:#d9e8f1;display:grid;gap:16px}.site-footer a{color:#e8fbff}.footer-links{display:flex;gap:16px;flex-wrap:wrap}.copyright{color:#9eb3c1;margin:0}@media(max-width:920px){.site-header{align-items:flex-start;flex-direction:column}.hero{grid-template-columns:1fr;padding-top:44px}.cards{grid-template-columns:1fr 1fr}.split{grid-template-columns:1fr}}@media(max-width:620px){.nav{font-size:13px}.hero h1{font-size:36px}.cards{grid-template-columns:1fr}.hero-card div{grid-template-columns:1fr}.info th,.info td{display:block;width:100%}.info th{padding-bottom:4px}.info td{padding-top:4px}}