:root{--brand:#10b981;--brand-deep:#059669;--brand-soft:#d1fae5;--brand-softer:#ecfdf5;--cta:#2563eb;--cta-deep:#1d4ed8;--ink:#0b1220;--ink-2:#1f2937;--muted:#475569;--muted-2:#64748b;--line:#e5e7eb;--line-2:#eef2f6;--bg:#ffffff;--bg-2:#f8fafc}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:Noto Sans JP,Hiragino Kaku Gothic ProN,Hiragino Sans,Yu Gothic UI,Yu Gothic,Meiryo,system-ui,-apple-system,Segoe UI,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;font-feature-settings:"palt" 1,"kern" 1;letter-spacing:.02em;line-break:strict;word-break:normal;overflow-wrap:anywhere}a{color:inherit;text-decoration:none}h1{margin:0;letter-spacing:-.03em;line-height:1.2}h2{margin:0;letter-spacing:-.02em;line-height:1.3}h3{margin:0;letter-spacing:-.015em;line-height:1.4}p{margin:0;line-height:1.85;color:var(--ink-2);letter-spacing:.03em}.num,code{font-family:Inter,ui-monospace,Menlo,monospace;letter-spacing:0}.wrap{max-width:880px;margin:0 auto;padding:0 32px}@media(max-width:760px){.wrap{padding:0 20px}}.topnav{border-bottom:1px solid var(--line-2);background:#fff;position:sticky;top:0;z-index:50}.topnav-inner{display:flex;align-items:center;justify-content:space-between;height:66px}.topnav-brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:16px}.topnav-brand img{width:32px;height:32px;border-radius:9px;box-shadow:0 6px 14px -6px #10b98180}.topnav-brand small{font-size:11px;color:var(--muted-2);font-weight:700;letter-spacing:.08em;margin-left:2px}.topnav a.btn-home{font-size:13.5px;font-weight:700;color:var(--cta);padding:8px 14px;border-radius:8px;border:1px solid #cdd9f3;background:#fff;transition:background .15s ease}.topnav a.btn-home:hover{background:#f5f8ff}.page-head{padding:56px 0 32px;background:linear-gradient(180deg,var(--brand-softer),#fff)}.page-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--brand-deep);margin-bottom:14px}.page-head .eyebrow:before{content:"";width:18px;height:1px;background:currentColor}.page-head h1{font-size:clamp(28px,4vw,40px);font-weight:900}.page-head .desc{margin-top:14px;color:var(--muted);font-size:15px;max-width:680px}.content{padding:48px 0 96px}.content h2{margin-top:48px;margin-bottom:14px;font-size:22px;font-weight:900}.content h2:first-child{margin-top:0}.content h3{margin-top:32px;margin-bottom:10px;font-size:17px;font-weight:800}.content p{margin-top:12px;font-size:15px}.content ul,.content ol{margin:14px 0;padding-left:1.6em;color:var(--ink-2);line-height:1.85;letter-spacing:.02em}.content li{margin:6px 0}.content table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px}.content table th,.content table td{padding:12px 16px;border:1px solid var(--line);text-align:left;vertical-align:top}.content table th{background:var(--bg-2);font-weight:700;color:var(--ink);width:32%}.content a:not(.btn-home){color:var(--cta);text-decoration:underline;text-underline-offset:3px}.content .note{padding:14px 18px;background:var(--brand-softer);border-left:3px solid var(--brand);border-radius:6px;color:var(--ink-2);font-size:14px;margin:18px 0}footer{padding:56px 0 36px;border-top:1px solid var(--line-2);background:#fff}.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}.foot-grid h4{font-size:12px;font-weight:800;color:var(--ink);letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px}.foot-grid ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}.foot-grid a{font-size:13px;color:var(--muted)}.foot-grid a:hover{color:var(--cta)}.foot-grid .brand img{width:32px;height:32px;border-radius:9px}.foot-grid .brand .desc{margin-top:14px;font-size:12.5px;color:var(--muted);line-height:1.85;max-width:320px}.foot-bottom{margin-top:44px;padding-top:20px;border-top:1px solid var(--line-2);display:flex;align-items:center;justify-content:space-between;color:var(--muted-2);font-size:12px}@media(max-width:760px){footer{padding:40px 0 28px}.foot-grid{grid-template-columns:1fr;gap:28px}.foot-grid h4{font-size:11px;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid var(--line-2)}.foot-grid ul{gap:8px}.foot-grid a{font-size:14px;padding:4px 0;display:inline-block}.foot-grid .brand img{width:36px;height:36px}.foot-grid .brand .desc{margin-top:10px;font-size:12px;max-width:none}.foot-bottom{flex-direction:column;align-items:flex-start;gap:12px;font-size:11px;margin-top:28px;padding-top:16px}}