:root{--navy:#13283d;--ink:#243444;--muted:#647789;--line:#dce6ed;--blue:#eaf2f7;--paper:#fff}*{box-sizing:border-box}body{margin:0;background:#f7fafc;color:var(--ink);font-family:system-ui,-apple-system,"Noto Sans JP",sans-serif}header{display:flex;justify-content:space-between;align-items:center;max-width:1180px;margin:auto;padding:22px 24px}.brand{font-weight:700;letter-spacing:.04em;color:var(--navy);text-decoration:none}.brand span{font-weight:400;color:var(--muted);font-size:.85em}nav{display:flex;gap:20px}a{color:inherit}main{max-width:1180px;margin:auto;padding:0 24px 70px}.hero{display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:48px;padding:68px 0 76px}.eyebrow{letter-spacing:.18em;color:#6b8da5;font-size:.75rem;font-weight:700}.hero h1{font-family:Georgia,"Noto Serif JP",serif;font-size:clamp(2.6rem,6vw,5.5rem);line-height:1.15;color:var(--navy);font-weight:500;margin:16px 0}.hero p{font-size:1.2rem;color:var(--muted)}.hero img{width:100%;max-height:430px;object-fit:cover;border-radius:6px;box-shadow:0 20px 50px #18354a22}.explore{background:var(--blue);padding:26px;border-radius:8px;margin-bottom:54px}.explore h2,section>h2{font-family:Georgia,"Noto Serif JP",serif;font-weight:500;color:var(--navy)}.chips{display:flex;flex-wrap:wrap;gap:9px;margin:18px 0}.chips button{border:1px solid #b9cad6;background:#fff;padding:9px 14px;border-radius:30px;color:var(--navy);cursor:pointer}.chips button.on,.chips button:hover{background:var(--navy);color:#fff}.explore input{width:100%;padding:14px;border:1px solid #b9cad6;border-radius:4px;font-size:1rem}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);padding:24px;min-height:190px;transition:.2s}.card:hover{transform:translateY(-3px);box-shadow:0 12px 25px #18354a14}.card>span{font-size:.7rem;color:#7895a8;letter-spacing:.1em}.card h3{font-family:Georgia,"Noto Serif JP",serif;font-size:1.35rem;color:var(--navy);font-weight:500}.card p{color:var(--muted);line-height:1.7}.card a{color:#467b9c;text-decoration:none;font-weight:600}.amazon{margin-top:60px;padding:26px;border-top:1px solid var(--line);display:flex;gap:12px;flex-wrap:wrap;align-items:center}.amazon h2{width:100%}.amazon a{padding:11px 16px;background:#fff;border:1px solid #b9cad6;text-decoration:none;border-radius:4px}footer{border-top:1px solid var(--line);max-width:1180px;margin:auto;padding:24px;display:flex;justify-content:space-between;color:var(--muted)}@media(max-width:700px){header{padding:16px}nav{gap:10px;font-size:.85rem}main{padding:0 16px 50px}.hero{grid-template-columns:1fr;padding:38px 0 48px;gap:24px}.hero h1{font-size:3rem}.grid{grid-template-columns:1fr}.amazon{display:block}.amazon a{display:block;margin:10px 0;text-align:center}footer{padding:18px 16px;display:block}footer small{display:block;margin-top:12px}}