:root{--ink:#172338;--muted:#5d6878;--paper:#f7f5f1;--cream:#fffdf8;--line:#dedbd4;--wine:#752f43;--gold:#b68845;--cyan:#2d8993;}
*{box-sizing:border-box}html{background:var(--paper);color:var(--ink);font-family:"Noto Sans JP",system-ui,sans-serif}body{margin:0;line-height:1.75}a{color:inherit}
.shell{max-width:1120px;margin:0 auto;padding:0 20px}.topbar{background:#101a2d;color:#fff}.topbar .shell{min-height:62px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-weight:800;letter-spacing:.04em;text-decoration:none}.nav{display:flex;gap:14px;flex-wrap:wrap;font-size:13px}.nav a{color:#dfe8f3;text-decoration:none}.nav a:hover{text-decoration:underline}
.hero{margin:26px 0 22px;padding:34px 34px 30px;background:linear-gradient(115deg,#18243a 0%,#27334a 60%,#6d2e43 100%);color:#fff;border-radius:12px;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(250px,.75fr);gap:28px;align-items:end}.eyebrow{font-size:12px;color:#f2d9a5;letter-spacing:.12em;font-weight:700}.hero h1{font-size:clamp(30px,4vw,50px);line-height:1.2;margin:8px 0 12px}.hero p{color:#eef2f8;margin:0;max-width:650px}.hero-note{border-left:3px solid #edc77d;padding-left:16px;color:#f9ead2;font-size:14px}
.section{padding:24px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line);margin-bottom:16px}.section h2{font-size:23px;margin:0 0 8px}.section-head p{color:var(--muted);font-size:13px;margin:0 0 8px}.entry-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}.entry{background:var(--cream);border:1px solid var(--line);border-top:4px solid var(--wine);padding:14px 13px;text-decoration:none;min-height:116px}.entry:nth-child(2){border-top-color:var(--cyan)}.entry:nth-child(3){border-top-color:#9a6b33}.entry:nth-child(4){border-top-color:#5c6e9b}.entry:nth-child(5){border-top-color:#a44b63}.entry strong{display:block;font-size:15px;margin-bottom:4px}.entry span{display:block;color:var(--muted);font-size:12px;line-height:1.55}
.feature{display:grid;grid-template-columns:310px minmax(0,1fr);gap:22px;background:var(--cream);border:1px solid var(--line);padding:16px;text-decoration:none}.feature img{width:100%;aspect-ratio:1.9;object-fit:cover;display:block}.feature h3{font-size:24px;line-height:1.35;margin:4px 0 10px}.feature p{color:var(--muted);margin:0 0 12px}.tag{display:inline-block;color:var(--wine);font-size:12px;font-weight:800;margin-bottom:5px}.arrow{font-weight:800;color:var(--wine)}
.guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.guide{background:var(--cream);border:1px solid var(--line);padding:16px;text-decoration:none}.guide h3{font-size:17px;margin:0 0 7px}.guide p{font-size:13px;color:var(--muted);margin:0 0 10px}.footer{border-top:1px solid var(--line);margin-top:20px;padding:22px 0;color:var(--muted);font-size:12px}
.hub{margin:24px auto 10px;background:#fffdf8;border:1px solid var(--line);padding:18px 20px}.hub-label{color:var(--wine);font-size:12px;font-weight:800;letter-spacing:.08em}.hub h2{margin:4px 0 7px;font-size:22px;color:var(--ink)!important}.hub p{margin:0;color:var(--muted)!important;font-size:14px}.hub-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:14px}.hub-link{background:#f1eee7;border:1px solid #ded6ca;padding:12px;text-decoration:none}.hub-link strong{display:block;font-size:14px;color:var(--ink)!important}.hub-link span{display:block;color:var(--muted)!important;font-size:12px;line-height:1.5;margin-top:3px}
.baseline{margin-top:18px}.baseline > *{max-width:100%}.baseline img{max-width:100%;height:auto}.baseline table{display:block;max-width:100%;overflow-x:auto}.baseline a{overflow-wrap:anywhere}.conversion-note{background:#eef5f4;border-left:4px solid var(--cyan);padding:13px 15px;margin:18px 0;font-size:14px;color:var(--ink)!important}.conversion-note strong{display:block;color:#1f6269!important;margin-bottom:2px}
@media (max-width:780px){.shell{padding:0 14px}.topbar .shell{display:block;padding-top:13px;padding-bottom:12px}.nav{margin-top:8px;gap:10px}.hero{grid-template-columns:1fr;padding:25px 21px;gap:14px}.hero h1{font-size:32px}.entry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.entry:last-child{grid-column:span 2}.feature{grid-template-columns:1fr;gap:13px}.feature h3{font-size:20px}.guide-grid{grid-template-columns:1fr}.hub-links{grid-template-columns:1fr 1fr}.hub{padding:16px 14px}.hub h2{font-size:19px}.baseline{margin-left:-2px;margin-right:-2px}}
@media (max-width:420px){.entry-grid{gap:8px}.entry{padding:11px 10px;min-height:106px}.hub-links{grid-template-columns:1fr}.hub-link{padding:10px}.hero h1{font-size:29px}}