:root{--ring-ink:#493a31;--ring-sub:#74645a;--ring-accent:#8a674a;--ring-pale:#fbf6f1;--ring-line:#eaded3;--ring-white:#fff}
.ring-page *{box-sizing:border-box}.ring-page{color:var(--ring-ink);font-family:"Noto Sans JP","Yu Gothic",Meiryo,sans-serif}.ring-page img{max-width:100%;height:auto}.ring-wrap{max-width:1040px;margin:0 auto;padding:0 18px}.ring-breadcrumb{font-size:13px;line-height:1.8;margin:14px 0;color:var(--ring-sub)}
.ring-hero{background:linear-gradient(135deg,#fff 0%,#fbf4ee 100%);border:1px solid var(--ring-line);border-radius:22px;padding:34px;margin:0 0 24px}.ring-eyebrow{font-size:13px;letter-spacing:.12em;color:var(--ring-accent);font-weight:700;margin:0 0 10px}.ring-hero h1{font-size:36px;line-height:1.45;margin:0 0 14px;color:var(--ring-ink)}.ring-hero-lead{font-size:17px;line-height:2;margin:0;max-width:820px}.ring-points{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:24px 0 0}.ring-point{background:#fff;border:1px solid var(--ring-line);border-radius:12px;padding:12px 8px;text-align:center;font-size:13px;font-weight:700}.ring-hero-img{width:100%;border-radius:18px;display:block;margin:20px 0 0}
.ring-quick{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0 42px}.ring-quick a{display:block;padding:15px 10px;border-radius:999px;background:var(--ring-ink);color:#fff;text-align:center;font-weight:700}.ring-section{margin:58px 0}.ring-section h2{font-size:30px;line-height:1.5;text-align:center;margin:0 0 12px}.ring-section-intro{font-size:16px;line-height:1.95;text-align:center;max-width:800px;margin:0 auto 28px}.ring-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.ring-card{border:1px solid var(--ring-line);border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 5px 18px rgba(70,45,28,.06)}.ring-card a{display:block;color:inherit}.ring-card img{display:block;width:100%;aspect-ratio:1/1;object-fit:cover}.ring-card-body{padding:15px}.ring-card h3{font-size:17px;line-height:1.45;margin:0 0 4px}.ring-ja{font-size:12px;color:var(--ring-sub);margin:0 0 8px}.ring-width{display:inline-block;background:var(--ring-pale);border:1px solid var(--ring-line);border-radius:999px;padding:4px 9px;font-size:12px;font-weight:700;color:var(--ring-accent)}.ring-material{font-size:11px;color:var(--ring-sub);margin:9px 0 0;line-height:1.5}.ring-note{font-size:12px;color:var(--ring-sub);line-height:1.7;margin-top:14px}
.ring-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.ring-feature{background:var(--ring-pale);border:1px solid var(--ring-line);border-radius:16px;padding:22px}.ring-feature h3{font-size:19px;margin:0 0 9px}.ring-feature p{font-size:14px;line-height:1.85;margin:0}.ring-band{background:var(--ring-ink);color:#fff;border-radius:20px;padding:30px;margin:54px 0}.ring-band h2,.ring-band h3,.ring-band p{color:#fff}.ring-band h2{font-size:28px;margin:0 0 12px}.ring-band p{font-size:15px;line-height:1.9;margin:0 0 18px}.ring-btns{display:flex;gap:12px;flex-wrap:wrap}.ring-btn{display:inline-block;background:var(--ring-accent);color:#fff!important;border-radius:999px;padding:14px 24px;font-weight:700;text-align:center}.ring-btn-light{background:#fff;color:var(--ring-ink)!important}.ring-table{width:100%;border-collapse:collapse;background:#fff}.ring-table th,.ring-table td{border:1px solid var(--ring-line);padding:14px;text-align:left;vertical-align:top;line-height:1.7}.ring-table th{background:var(--ring-pale);width:24%}.ring-faq details{border-top:1px solid var(--ring-line);padding:16px 0}.ring-faq details:last-child{border-bottom:1px solid var(--ring-line)}.ring-faq summary{font-weight:700;cursor:pointer;line-height:1.7}.ring-faq details p{font-size:14px;line-height:1.9;margin:12px 0 0}.ring-subnav{display:grid;grid-template-columns:1fr 1fr;gap:16px}.ring-subnav a{border:1px solid var(--ring-line);border-radius:16px;padding:22px;background:#fff}.ring-subnav strong{display:block;font-size:18px;margin-bottom:6px}.ring-subnav span{font-size:13px;line-height:1.7;color:var(--ring-sub)}
@media(max-width:767px){body{padding-bottom:240px}.ring-wrap{padding:0 12px}.ring-hero{padding:22px 16px;border-radius:16px}.ring-hero h1{font-size:26px;line-height:1.45}.ring-hero-lead{font-size:14px;line-height:1.9}.ring-points{grid-template-columns:1fr 1fr}.ring-point{font-size:12px}.ring-quick{grid-template-columns:1fr;margin-bottom:34px}.ring-quick a{padding:13px}.ring-section{margin:44px 0}.ring-section h2{font-size:23px}.ring-section-intro{font-size:14px;text-align:left}.ring-grid{grid-template-columns:1fr 1fr;gap:10px}.ring-card-body{padding:11px}.ring-card h3{font-size:14px;overflow-wrap:anywhere}.ring-feature-grid{grid-template-columns:1fr}.ring-band{padding:24px 18px;border-radius:16px}.ring-band h2{font-size:23px}.ring-btns{display:grid;grid-template-columns:1fr;width:100%}.ring-btn{width:100%}.ring-table,.ring-table tbody,.ring-table tr,.ring-table th,.ring-table td{display:block;width:100%}.ring-table th{border-bottom:0;padding-bottom:8px}.ring-table td{padding-top:9px}.ring-subnav{grid-template-columns:1fr}}