:root{--ink:#1f2733;--ink-soft:#4b5563;--paper:#faf9f6;--card:#ffffff;--line:#e5e1d8;--navy:#1f4e79;--navy-dark:#173a5c;--red:#c0392b;--accent-bg:#eef3f8;--radius:10px}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{font-family:Hiragino Kaku Gothic ProN,Hiragino Sans,Yu Gothic UI,Yu Gothic,Meiryo,system-ui,sans-serif;background:var(--paper);color:var(--ink);line-height:1.8;font-size:16px}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{max-width:1080px;margin:0 auto;padding:0 20px}.site-header{background:var(--card);border-bottom:1px solid var(--line);position:-webkit-sticky;position:sticky;top:0;z-index:50}.site-header .inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 20px;max-width:1080px;margin:0 auto}.brand{display:flex;flex-direction:column;line-height:1.3}.brand .name{font-size:20px;font-weight:700;color:var(--navy);letter-spacing:.04em}.brand .tagline{font-size:11px;color:var(--ink-soft)}.site-nav{display:flex;gap:18px;font-size:14px;flex-wrap:wrap}.site-nav a:hover{color:var(--navy)}.hero{background:linear-gradient(180deg,#ffffff 0,var(--paper) 100%);border-bottom:1px solid var(--line);padding:56px 0 48px;text-align:center}.hero h1{font-size:clamp(24px,4.5vw,38px);color:var(--navy-dark);letter-spacing:.05em;margin-bottom:14px}.hero p.lede{max-width:640px;margin:0 auto 24px;color:var(--ink-soft);font-size:15px}.hero .points{display:flex;justify-content:center;gap:10px;flex-wrap:wrap}.hero .points span{background:var(--accent-bg);color:var(--navy-dark);border:1px solid #d3e0ec;border-radius:999px;padding:5px 14px;font-size:13px;font-weight:600}.section{padding:44px 0 8px}.section-head{display:flex;align-items:baseline;gap:12px;border-left:5px solid var(--navy);padding-left:12px;margin-bottom:20px}.section-head h2{font-size:21px;letter-spacing:.03em}.section-head 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