:root{color-scheme:light;--paper:#fdfcf9;--ink:#292826;--rule:#d6d2cb}*{box-sizing:border-box}html{background:var(--paper);color:var(--ink)}body{margin:0;font-family:"Yu Gothic","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;font-size:16px;font-weight:500;line-height:2.05;letter-spacing:.045em}main{overflow:clip}h1,h2,h3,.brand,.start,.cta,dt{font-family:"Yu Mincho","Hiragino Mincho ProN","Times New Roman",serif}h1,h2,h3{font-weight:600;line-height:1.75;letter-spacing:.09em}h1{font-size:clamp(25px,3vw,36px);margin:0}h2{font-size:clamp(23px,2.5vw,30px);margin:0 0 40px}h3{font-size:20px;margin:0 0 18px}p{margin:0 0 28px}p:last-child{margin-bottom:0}img{display:block;width:100%;height:auto;object-fit:contain}.hero{text-align:center;max-width:720px;margin:auto;padding:92px 28px 100px}.brand{font-size:22px;letter-spacing:.12em;margin:20px 0 46px}.hero img{max-width:530px;margin:0 auto 44px}.start{font-size:17px;line-height:2.1}.chapter{max-width:1060px;margin:auto;padding:105px 48px}.chapter-inner{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:72px;align-items:start}.art{position:sticky;top:72px;padding-top:8px}.copy{min-width:0}.chapter-03 .art,.chapter-06 .art{max-width:350px;margin:auto}.chapter-04,.chapter-05,.chapter-08{max-width:860px}.chapter-04 .chapter-inner,.chapter-05 .chapter-inner,.chapter-08 .chapter-inner{display:flex;flex-direction:column;gap:48px}.chapter-04 .art,.chapter-05 .art,.chapter-08 .art{position:static;width:100%;padding:0}.chapter-04 .copy,.chapter-05 .copy,.chapter-08 .copy{width:100%;max-width:560px;margin:auto}.features{margin-top:62px}.features article{padding:32px 0;border-top:1px solid var(--rule)}strong{font-family:"Yu Mincho",serif;font-size:1.15em;font-weight:700;letter-spacing:.08em}.event{margin:44px 0}.event div{display:flex;gap:16px;padding:13px 0;border-bottom:1px solid var(--rule)}dt{min-width:90px}dd{margin:0}.cta{display:flex;align-items:center;justify-content:center;min-height:62px;width:100%;max-width:370px;padding:16px 20px;border:1px solid var(--ink);background:var(--ink);color:#fff;text-decoration:none;font-size:17px;font-weight:600;letter-spacing:.06em;line-height:1.7;cursor:pointer}.cta:hover{background:#45423e}.cta:focus-visible,summary:focus-visible{outline:3px solid #786d58;outline-offset:5px}.cta:disabled{cursor:default}.faq{max-width:660px;margin:auto;padding:105px 28px}.faq h2{text-align:center;margin-bottom:54px}details{border-top:1px solid var(--rule);padding:26px 0}details:last-child{border-bottom:1px solid var(--rule)}summary{cursor:pointer;padding:6px 0;line-height:1.9;font-weight:600}summary::marker{font-size:12px}.answer{padding:24px 0 0 20px}.answer>span{display:block;margin-bottom:10px}.final{max-width:860px;margin:auto;text-align:center;padding:110px 28px 100px}.final img{margin:52px auto;max-width:800px}.final .cta{margin:auto}@media(max-width:700px){body{font-size:16px;letter-spacing:.015em;line-height:2}.hero{padding:62px 24px 70px}.hero img{margin-bottom:34px}.brand{font-size:20px;margin-bottom:34px}.chapter{padding:76px 26px}.chapter-inner{display:flex;flex-direction:column;gap:38px}.art{position:static;width:100%;padding:0;max-width:480px;margin:auto}.copy{width:100%;max-width:520px;margin:auto}h2{font-size:24px;letter-spacing:.045em;margin-bottom:32px}.chapter-03 .art,.chapter-06 .art{max-width:310px}.chapter-04,.chapter-05,.chapter-08{padding-left:24px;padding-right:24px}.chapter-04 .chapter-inner,.chapter-05 .chapter-inner,.chapter-08 .chapter-inner{gap:38px}.features{margin-top:44px}.event div{gap:8px}dt{min-width:80px}.faq{padding:70px 26px}.final{padding:78px 24px 74px}.final img{margin:40px auto}.cta{font-size:16px;min-height:62px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}@media print{.art{position:static}.chapter{break-inside:avoid}.cta{color:#292826;background:transparent}}
