:root{--navy:#1a3a5c;--red:#d4442a;--gold:#a39463;--paper:#faf8f5;--deep:#f0ece4;--line:#d4c8b0;--ink:#1a1a1a;--muted:#5a5a5a;--max:1080px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--paper);color:var(--ink);font:16px/1.8 'Noto Sans JP','Hiragino Sans','Yu Gothic',sans-serif}a{color:inherit}.nav{position:sticky;top:0;z-index:3;background:rgba(250,248,245,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav-in,.inner{max-width:var(--max);margin:auto;padding-left:clamp(20px,4vw,44px);padding-right:clamp(20px,4vw,44px)}.nav-in{height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:10px;color:var(--navy);font-weight:900;text-decoration:none}.mark{display:grid;place-items:center;width:36px;height:36px;background:var(--red);border-radius:4px;color:#fff;font-size:11px;transform:rotate(-2deg)}.nav a:not(.brand){color:var(--muted);font-size:14px;text-decoration:none}.nav-links{display:flex;gap:20px;list-style:none}.hero{background:var(--navy);color:#fff}.hero .inner{padding-top:40px;padding-bottom:78px}.crumb{color:rgba(255,255,255,.72);font-size:13px}.crumb a{color:#fff;text-decoration:none}.eyebrow,.label{color:var(--gold);font-size:12px;font-weight:900;letter-spacing:.15em}.hero .eyebrow{color:#e8d99d;margin:30px 0 12px}h1{max-width:760px;font-size:clamp(35px,5vw,60px);line-height:1.3}.lead{max-width:700px;margin-top:20px;color:rgba(255,255,255,.84);font-size:18px}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.btn{display:inline-block;padding:12px 19px;border-radius:7px;font-weight:800;text-decoration:none}.btn-light{color:var(--navy);background:#fff}.btn-line{border:1px solid rgba(255,255,255,.55);color:#fff}.section{padding:74px 0}.alt{background:var(--deep)}h2{margin:7px 0 14px;color:var(--navy);font-size:clamp(27px,3.5vw,40px);line-height:1.4}.intro{max-width:760px;color:var(--muted);font-size:17px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px;margin-top:30px}.card{padding:23px;background:#fff;border:1px solid var(--line);border-radius:10px}.card h3{color:var(--navy);font-size:18px}.card p{margin-top:7px;color:var(--muted);font-size:14px}.subjects{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:30px}.subject{display:flex;justify-content:space-between;padding:17px;background:#fff;border:1px solid var(--line);border-radius:8px;color:var(--navy);font-weight:800;text-decoration:none}.subject span{color:var(--red);font-size:13px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}.step{padding:23px;background:#fff;border-radius:10px;color:var(--muted)}.step b{display:block;margin-bottom:8px;color:var(--red);font-size:12px;letter-spacing:.12em}.step h3{color:var(--navy);font-size:18px}.note{margin-top:28px;padding:21px 24px;background:#eef5f2;border:1px solid #c7ddd3;border-radius:10px;color:#46564e;font-size:14px}.note a{color:var(--navy);font-weight:800}.final{background:var(--navy);color:#fff;text-align:center}.final h2{color:#fff}.final p{max-width:670px;margin:0 auto 25px;color:rgba(255,255,255,.8)}.final .btn{background:#fff;color:var(--navy)}footer{padding:35px clamp(20px,4vw,44px);background:#0f1a26;color:rgba(255,255,255,.6);font-size:13px}@media(max-width:760px){.grid,.subjects,.steps{grid-template-columns:1fr}.nav-links li:not(:last-child){display:none}.lead{font-size:16px}}