*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Noto Sans JP","Yu Gothic",Meiryo,sans-serif;color:#333;background:#f7f7f5;line-height:1.8}
a{color:#155a8a}.wrap{max-width:1100px;margin:auto;padding:0 18px}
header{background:#fff;border-bottom:1px solid #ddd;position:sticky;top:0;z-index:10}
.header-in{max-width:1100px;margin:auto;padding:10px 18px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.logo{font-weight:700;font-size:20px;color:#333}.tel{font-weight:700;white-space:nowrap}
nav{overflow-x:auto;white-space:nowrap;background:#333}nav .nav-in{max-width:1100px;margin:auto;display:flex}nav a{color:#fff;text-decoration:none;padding:9px 16px;font-size:14px}
.hero{text-align:center;padding:28px 0 20px}.hero h1{font-size:clamp(24px,4vw,34px);margin:0 0 8px}.hero p{margin:4px 0}
.plan-overview{background:#fff;border-radius:14px;padding:18px;text-align:center;box-shadow:0 2px 10px #00000010}.plan-overview img{max-width:100%;height:auto;max-height:520px;object-fit:contain}
.intro{margin:22px 0;background:#fff;padding:22px;border-radius:14px}.intro p{margin:0 0 10px}.highlight{font-weight:700}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:18px 0}.feature{background:#fff;padding:16px;border-radius:12px;text-align:center;border:1px solid #e4e4e4}.feature strong{display:block;font-size:18px}
section{margin:34px 0}h2{font-size:24px;border-left:6px solid #555;padding-left:12px;margin:0 0 16px}
.room{background:#fff;border-radius:14px;padding:20px;margin-bottom:28px;box-shadow:0 2px 10px #0000000d}.room h3{font-size:22px;margin:0 0 14px}.room-plan{text-align:center;margin-bottom:18px}.room-plan img{max-width:100%;width:auto;height:auto;max-height:650px;object-fit:contain}
.info{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:16px 0}.info div{background:#f2f3f2;padding:10px;border-radius:8px}.info b{display:block;font-size:12px;color:#666}.info span{font-weight:600}
.note{background:#fff8ed;padding:14px;border-radius:10px;margin-top:14px}.occupied{color:#a6531a;font-weight:700;font-size:18px}
details{margin-top:14px;border-top:1px solid #ddd;padding-top:10px}summary{cursor:pointer;font-weight:700}
footer{text-align:center;padding:28px 0 90px}.back{display:inline-block;padding:10px 22px;border:1px solid #555;border-radius:8px;text-decoration:none;background:#fff}
.mobile-cta{position:fixed;bottom:0;left:0;right:0;display:flex;z-index:20;background:#fff;border-top:1px solid #ccc}.mobile-cta a{flex:1;text-align:center;padding:11px;text-decoration:none;font-weight:700}.mobile-cta a:first-child{background:#333;color:#fff}.mobile-cta a:last-child{background:#e8e8e8;color:#333}
@media(max-width:700px){.wrap{padding:0 12px}.header-in{padding:8px 12px}.logo{font-size:16px}.tel{font-size:13px}nav a{padding:8px 12px;font-size:13px}.hero{padding:20px 0 14px}.intro{padding:16px;font-size:14px}.features{grid-template-columns:1fr;gap:8px}.feature{padding:10px}.feature strong{font-size:16px}.room{padding:14px;margin-bottom:20px}.room h3{font-size:20px}.info{grid-template-columns:repeat(2,1fr);gap:7px}.info div{padding:8px;font-size:14px}.room-plan img{max-height:none;width:100%;height:auto}h2{font-size:21px}.plan-overview{padding:10px}}