:root{--ink:#20303a;--muted:#667782;--line:#dfe8ec;--bg:#f5f9fa;--card:#fff;--accent:#0f7b7a;--accent2:#dff3f0;--warm:#fff6e8}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;color:var(--ink);background:#fff;line-height:1.8}a{color:#096c74;text-decoration:none}a:hover{text-decoration:underline}.wrap{width:min(1120px,92%);margin:auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}.head{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 0}.brand{font-weight:800;color:var(--ink);font-size:18px}.nav{display:flex;gap:18px;flex-wrap:wrap;font-size:14px}.hero{background:linear-gradient(135deg,#e9f7f4,#f7fbfc 55%,#fff8ea);padding:72px 0 56px;border-bottom:1px solid var(--line)}.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:42px;align-items:center}.eyebrow{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--accent);text-transform:uppercase}.hero h1{font-size:clamp(34px,5vw,58px);line-height:1.2;margin:.25em 0}.lead{font-size:18px;color:var(--muted)}.illus{background:#fff;border:1px solid var(--line);border-radius:28px;padding:28px;box-shadow:0 18px 50px rgba(40,70,80,.08)}.illus svg{width:100%;height:auto;display:block}.section{padding:56px 0}.section.alt{background:var(--bg)}h2{font-size:30px;line-height:1.35;margin:0 0 18px}h3{line-height:1.45;margin-top:0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 8px 24px rgba(40,70,80,.04)}.card p{color:var(--muted)}.tag{display:inline-block;background:var(--accent2);color:#146b68;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700}.cta{background:#173c43;color:#fff;border-radius:24px;padding:30px}.cta a{color:#fff;text-decoration:underline}.cta p{color:#d6e8eb}.note{background:var(--warm);border-left:4px solid #d59c3d;padding:18px 20px;border-radius:10px}.content{max-width:860px}.content h2{margin-top:48px}.terms dt{font-weight:800;margin-top:24px}.terms dd{margin:6px 0 0;color:var(--muted)}.breadcrumb{font-size:13px;color:var(--muted);padding:18px 0}.footer{background:#13272c;color:#cbd8dc;padding:38px 0;margin-top:54px}.footer a{color:#dff4f1}.footer-nav{display:flex;gap:18px;flex-wrap:wrap;margin-bottom:18px}.small{font-size:13px;color:var(--muted)}table{width:100%;border-collapse:collapse;margin:20px 0;background:#fff}th,td{border:1px solid var(--line);padding:12px;text-align:left}th{background:#eef7f7}.pill-row{display:flex;gap:10px;flex-wrap:wrap}.pill{border:1px solid var(--line);border-radius:999px;padding:7px 12px;background:#fff}.mobile-menu{display:none}
@media(max-width:820px){.hero-grid,.grid{grid-template-columns:1fr}.hero{padding:48px 0 38px}.nav{display:none}.mobile-menu{display:block;font-size:13px}.section{padding:42px 0}.hero h1{font-size:36px}.lead{font-size:16px}}