:root{--ink:#26383d;--muted:#61747a;--brand:#4d8797;--dark:#326472;--pale:#edf6f7;--paper:#fff;--line:#d7e5e7}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f7faf9;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Helvetica Neue","Yu Gothic",YuGothic,Meiryo,sans-serif;font-size:16px;line-height:1.85}.wrap{width:min(880px,calc(100% - 40px));margin:auto}.hero{padding:70px 0 62px;background:linear-gradient(145deg,#b4d7dd,#70aebd);color:#fff;text-align:center}.hero-inner{max-width:680px}.eyebrow,.section-label{margin:0 0 7px;font-size:.82rem;font-weight:800;letter-spacing:.13em}.hero h1{margin:0;font-size:clamp(2.1rem,8vw,3.6rem);line-height:1.35}.hero-copy{margin:18px auto 24px;max-width:560px;font-size:1.08rem}.button{display:inline-block;padding:13px 24px;border-radius:999px;background:#fff;color:var(--dark);font-weight:800;text-decoration:none;box-shadow:0 6px 18px #35687735}.button:hover,.button:focus-visible{transform:translateY(-1px);box-shadow:0 8px 22px #35687750}.note{color:var(--muted);font-size:.9rem}.hero .note{margin:14px 0 0;color:#f5ffff}main{padding-top:34px;padding-bottom:54px}.card{margin:0 0 22px;padding:clamp(22px,5vw,36px);border:1px solid var(--line);border-radius:16px;background:var(--paper);box-shadow:0 5px 20px #315b650d}.section-label{color:var(--brand)}h1,h2,h3{line-height:1.5}h2{margin:0 0 16px;color:var(--dark);font-size:1.5rem}h3{margin:20px 0 5px;font-size:1.05rem}p{margin:0 0 14px}ul{padding-left:1.4em}li+li{margin-top:6px}.feature-grid{display:grid;gap:0 24px}.page-header{padding:45px 0 38px;background:linear-gradient(145deg,#b4d7dd,#78b2bf);color:#fff}.page-header h1{margin:0;font-size:clamp(1.8rem,6vw,2.6rem)}.page-header p{margin:6px 0 0}.breadcrumb{margin-bottom:8px;font-size:.85rem}.breadcrumb a{color:#fff}.content h2{margin-top:34px;padding-bottom:7px;border-bottom:2px solid var(--pale)}.content h2:first-child{margin-top:0}.content h3{margin-top:24px}.updated{text-align:right;color:var(--muted);font-size:.88rem}.site-footer{padding:28px 20px;background:#e7f1f2;color:var(--muted);font-size:.88rem;text-align:center}.site-footer nav{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 20px;margin-bottom:12px}.site-footer a{color:var(--dark)}.site-footer p{margin:0}.contact-box{padding:22px;border-left:4px solid var(--brand);background:var(--pale)}@media(min-width:650px){.feature-grid{grid-template-columns:1fr 1fr}}