*{box-sizing:border-box}
body{margin:0;font-family:"Hiragino Sans","Yu Gothic",Meiryo,sans-serif;color:#222;line-height:1.8;background:#fff}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
.head{border-bottom:1px solid #e3e8ee;background:#fff;position:sticky;top:0}
.head .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;padding-top:10px;padding-bottom:10px}
.logo{color:#1f4e79;font-size:1.1rem}
nav a{margin-left:16px;color:#333;text-decoration:none;font-size:.9rem}
.hero{background:linear-gradient(135deg,#1f4e79,#2e7d9a);color:#fff;padding:64px 0}
.hero h1{font-size:1.7rem;line-height:1.5;margin:0 0 16px}
.btn{display:inline-block;background:#fff;color:#1f4e79;padding:12px 28px;border-radius:6px;text-decoration:none;font-weight:bold;margin-top:12px}
.sec{padding:48px 0}
.alt{background:#f4f7fa}
h2{font-size:1.4rem;border-left:5px solid #2e7d9a;padding-left:12px;margin:0 0 20px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.card{background:#fff;border:1px solid #e3e8ee;border-radius:8px;padding:18px}
.card h3{margin:0 0 6px;color:#1f4e79}
.note{font-size:.85rem;color:#555}
.samples{padding-left:20px}
table{width:100%;border-collapse:collapse;background:#fff}
th,td{border:1px solid #d8dee6;padding:10px;text-align:left;vertical-align:top;font-size:.92rem}
th{background:#eaf0f6}
.flow{padding-left:20px}
.flow li{margin-bottom:12px}
.flow b{display:block;color:#1f4e79}
details{background:#fff;border:1px solid #e3e8ee;border-radius:6px;margin-bottom:10px;padding:10px 14px}
summary{cursor:pointer;font-weight:bold}
.foot{background:#1c2b3a;color:#cfd8e3;padding:24px 0;font-size:.85rem}
.foot p{margin:4px 0}
@media(max-width:600px){.hero h1{font-size:1.35rem}nav a{margin:0 10px 0 0}table{font-size:.85rem}}