:root{--brand:#EA580C;--brand-strong:#C2410C;--brand-deep:#9A3412;--brand-tint:#FFF7ED;--brand-tint-2:#FFE9D6;--ink:#1C1917;--muted:#57534E;--line:#E7E5E4;--line-strong:#78716C;--bg:#FFFFFF;--surface:#FFFBF7;--max:1120px;--radius:14px;--shadow:0 1px 2px rgba(28,25,23,.06),0 8px 24px rgba(28,25,23,.06);--font:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic",YuGothic,Meiryo,"Noto Sans JP","Segoe UI",Roboto,sans-serif}*,*::before,*::after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}@media 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ease}.skip-link:focus{top:12px;color:#fff}.container{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:clamp(16px,4vw,28px)}.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--line)}.header-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 20px;padding-block:12px}.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);min-height:48px}.brand img{width:40px;height:40px}.brand-name{font-weight:800;font-size:1.2rem;letter-spacing:.04em}.brand-name span{color:var(--brand-strong)}.site-nav ul{display:flex;flex-wrap:wrap;align-items:center;gap:4px 6px;list-style:none;margin:0;padding:0}.site-nav a{display:inline-flex;align-items:center;min-height:48px;padding:8px 16px;border-radius:999px;text-decoration:none;color:var(--ink);font-weight:600}.site-nav a:hover,.site-nav a:focus-visible{background:var(--brand-tint);color:var(--brand-deep)}.site-nav a[aria-current="page"]{background:var(--brand-tint-2);color:var(--brand-deep)}main{display:block}.section{padding-block:clamp(40px,7vw,80px)}.section--tint{background:var(--surface);border-block:1px solid var(--line)}.eyebrow{display:inline-block;font-size:.82rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand-strong);margin:0 0 12px}h1,h2,h3,h4{line-height:1.35;color:var(--ink);text-wrap:balance}.section-title{font-size:clamp(1.5rem,3.4vw,2.1rem);font-weight:800;margin:0 0 14px}.section-lead{font-size:clamp(1rem,2vw,1.12rem);color:var(--muted);max-width:62ch;margin:0 0 8px}.hero{background:linear-gradient(160deg,var(--brand-tint) 0%,var(--brand-tint-2) 60%,#FFFFFF 100%)}.hero-inner{display:grid;gap:clamp(24px,5vw,48px);align-items:center;padding-block:clamp(44px,8vw,88px)}.hero-title{font-size:clamp(1.9rem,5.2vw,3.1rem);font-weight:800;margin:0 0 18px;letter-spacing:.01em}.hero-title em{color:var(--brand-strong);font-style:normal}.hero-lead{font-size:clamp(1.04rem,2.3vw,1.22rem);color:var(--muted);max-width:60ch;margin:0 0 26px}.hero-art{justify-self:center}.hero-art img{width:min(320px,72vw);height:auto;filter:drop-shadow(0 18px 36px rgba(194,65,12,.18))}@media(min-width:64em){.hero-inner{grid-template-columns:1.15fr .85fr}.hero-art{justify-self:end}}.actions{display:flex;flex-wrap:wrap;gap:14px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:50px;padding:13px 26px;border-radius:999px;font-weight:700;font-size:1rem;text-decoration:none;cursor:pointer;border:2px solid transparent;transition:transform .12s ease,background .15s ease,color .15s ease}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--brand-strong);color:#fff}.btn-primary:hover,.btn-primary:focus-visible{background:var(--brand-deep);color:#fff}.btn-ghost{background:#fff;color:var(--brand-strong);border-color:var(--brand-strong)}.btn-ghost:hover,.btn-ghost:focus-visible{background:var(--brand-tint);color:var(--brand-deep);border-color:var(--brand-deep)}.grid{display:grid;gap:clamp(18px,3vw,26px)}.grid-3{grid-template-columns:1fr}@media(min-width:48em){.grid-3{grid-template-columns:repeat(2,1fr)}}@media(min-width:64em){.grid-3{grid-template-columns:repeat(3,1fr)}}.grid-4{grid-template-columns:1fr}@media(min-width:40em){.grid-4{grid-template-columns:repeat(2,1fr)}}@media(min-width:72em){.grid-4{grid-template-columns:repeat(4,1fr)}}.value{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}.value-ico{width:48px;height:48px;display:grid;place-items:center;border-radius:12px;background:var(--brand-tint);color:var(--brand-strong);margin-bottom:14px}.value-ico svg{width:26px;height:26px}.value h3{font-size:1.18rem;font-weight:700;margin:0 0 8px}.value p{margin:0;color:var(--muted);font-size:.98rem}.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .14s ease,box-shadow .14s ease}.card:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(28,25,23,.12)}.card-top{height:8px;background:linear-gradient(90deg,var(--brand),var(--brand-deep))}.card-body{display:flex;flex-direction:column;gap:10px;padding:22px;flex:1}.tag{align-self:flex-start;font-size:.76rem;font-weight:700;letter-spacing:.06em;color:var(--brand-strong);background:var(--brand-tint);padding:5px 12px;border-radius:999px}.card h3{font-size:1.16rem;font-weight:700;margin:0;line-height:1.45}.card h3 a{color:var(--ink);text-decoration:none}.card h3 a:hover,.card h3 a:focus-visible{color:var(--brand-deep);text-decoration:underline}.card p{margin:0;color:var(--muted);font-size:.95rem;flex:1}.card-more{margin-top:6px;font-weight:700;color:var(--brand-strong);text-decoration:none}.card-more:hover{text-decoration:underline}.breadcrumbs{padding-block:18px}.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:6px 10px;list-style:none;margin:0;padding:0;font-size:.9rem;color:var(--muted)}.breadcrumbs li{display:flex;align-items:center;gap:10px}.breadcrumbs li+li::before{content:"›";color:var(--line-strong)}.breadcrumbs a{color:var(--brand-strong);text-decoration:none}.breadcrumbs a:hover{text-decoration:underline}.breadcrumbs [aria-current="page"]{color:var(--muted)}.page-head{background:var(--surface);border-bottom:1px solid var(--line)}.page-head .container{padding-block:clamp(30px,5vw,52px)}.page-title{font-size:clamp(1.7rem,4.4vw,2.5rem);font-weight:800;margin:0 0 12px}.page-intro{font-size:clamp(1rem,2vw,1.12rem);color:var(--muted);max-width:64ch;margin:0}.prose{max-width:none}.layout{display:grid;gap:clamp(28px,5vw,56px)}@media(min-width:64em){.layout{grid-template-columns:minmax(0,1fr) 300px}}.prose h2{font-size:clamp(1.35rem,3vw,1.75rem);font-weight:800;margin:2.2em 0 .6em;padding-top:.3em}.prose h3{font-size:clamp(1.12rem,2.4vw,1.3rem);font-weight:700;margin:1.8em 0 .5em}.prose p{margin:0 0 1.2em}.prose ul,.prose ol{margin:0 0 1.3em;padding-left:1.4em}.prose li{margin-bottom:.55em}.prose li::marker{color:var(--brand-strong)}.prose a{color:var(--brand-strong);text-decoration:underline;text-underline-offset:2px}.prose a:hover{color:var(--brand-deep)}.prose strong{font-weight:700}.prose figure{margin:0 0 1.4em}.prose h2:first-child,.prose h3:first-child{margin-top:0}.lead-block{font-size:1.12rem;line-height:1.85;color:var(--ink);background:var(--brand-tint);border-left:5px solid var(--brand-strong);border-radius:0 12px 12px 0;padding:20px 24px;margin:0 0 28px}.tldr{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin:0 0 22px}.tldr strong{display:block;font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;color:var(--brand-strong);margin-bottom:6px}.tldr p{margin:0;color:var(--ink)}.notice{background:#FFF4EC;border:1px solid var(--brand-tint-2);border-left:5px solid var(--brand-strong);border-radius:0 12px 12px 0;padding:18px 22px;margin:24px 0}.notice h3,.notice p:first-child strong{color:var(--brand-deep)}.notice p{margin:0 0 .6em}.notice p:last-child{margin-bottom:0}.notice ul{margin:.4em 0 0}.table-wrap{overflow-x:auto;margin:0 0 1.6em;border:1px solid var(--line);border-radius:12px}table{border-collapse:collapse;width:100%;min-width:480px;font-size:.96rem}caption{text-align:left;font-weight:700;padding:14px 16px;color:var(--ink)}th,td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}thead th{background:var(--brand-tint);color:var(--brand-deep);font-weight:700;border-bottom:2px solid var(--brand-tint-2)}tbody tr:last-child td{border-bottom:0}tbody tr:nth-child(even){background:var(--surface)}.qa{margin:1.4em 0}.qa-item{border:1px solid var(--line);border-radius:12px;padding:6px 20px;margin-bottom:12px;background:#fff}.qa-item summary{cursor:pointer;font-weight:700;padding:14px 30px 14px 0;list-style:none;position:relative;color:var(--ink)}.qa-item summary::-webkit-details-marker{display:none}.qa-item summary::after{content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);font-size:1.4rem;color:var(--brand-strong);font-weight:700}.qa-item[open] summary::after{content:"–"}.qa-item summary:focus-visible{outline:3px solid var(--brand-deep);outline-offset:3px;border-radius:6px}.qa-item .qa-a{padding:0 0 16px;color:var(--muted)}.qa-item .qa-a p{margin:0 0 .8em}.qa-item .qa-a p:last-child{margin-bottom:0}.aside{display:flex;flex-direction:column;gap:22px}.aside-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px}.aside-card h2,.aside-card h3{font-size:1.05rem;font-weight:700;margin:0 0 12px}.toc{list-style:none;margin:0;padding:0;font-size:.95rem}.toc li{margin-bottom:2px}.toc a{display:block;padding:8px 10px;border-radius:8px;color:var(--ink);text-decoration:none}.toc a:hover,.toc a:focus-visible{background:var(--brand-tint);color:var(--brand-deep)}.aside-list{list-style:none;margin:0;padding:0}.aside-list li{padding:10px 0;border-bottom:1px solid var(--line)}.aside-list li:last-child{border-bottom:0;padding-bottom:0}.aside-list a{color:var(--brand-strong);text-decoration:none;font-weight:600;line-height:1.5}.aside-list a:hover{text-decoration:underline}.byline{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;color:var(--muted);font-size:.92rem;margin:0}.byline .author{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--ink)}.byline .author span{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--brand-tint);overflow:hidden}.byline .author span img{width:30px;height:30px}.refs{margin-top:2.4em;border-top:1px solid var(--line);padding-top:1.4em}.refs h2{font-size:1.2rem;margin:0 0 .6em}.refs ol{padding-left:1.3em;color:var(--muted);font-size:.92rem}.refs a{word-break:break-all}.def-list{display:grid;gap:14px;margin:1.2em 0}.def-list div{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 20px}.def-list dt{font-weight:700;color:var(--brand-deep);margin-bottom:4px}.def-list 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ul{list-style:none;margin:0;padding:0}.footer-col li{margin-bottom:4px}.footer-col a{display:inline-flex;min-height:40px;align-items:center;color:#E7E5E4;text-decoration:none;font-size:.95rem}.footer-col a:hover,.footer-col a:focus-visible{color:#fff;text-decoration:underline}.social{display:flex;gap:12px;margin-top:16px}.social a{display:grid;place-items:center;width:44px;height:44px;border-radius:10px;background:rgba(255,255,255,.08);color:#fff}.social a:hover,.social a:focus-visible{background:var(--brand-strong)}.social svg{width:20px;height:20px}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-block:24px;display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between}.footer-bottom p{margin:0;color:#A8A29E;font-size:.86rem}.footer-note{color:#A8A29E;font-size:.84rem;line-height:1.7;max-width:none;border-top:1px solid rgba(255,255,255,.12);padding-block:18px}.page-wrap{min-height:100vh;display:flex;flex-direction:column}.flow>*+*{margin-top:1.1em}.center{text-align:center}.mt-0{margin-top:0}.cta-band{background:linear-gradient(135deg,var(--brand-strong),var(--brand-deep));color:#fff;border-radius:var(--radius);padding:clamp(28px,5vw,48px);text-align:center}.cta-band h2{color:#fff;font-size:clamp(1.4rem,3vw,1.9rem);margin:0 0 12px}.cta-band p{color:#FFE9D6;max-width:54ch;margin:0 auto 22px}.cta-band .btn-ghost{background:#fff;border-color:#fff;color:var(--brand-strong)}.cta-band .btn-ghost:hover{background:var(--brand-tint);color:var(--brand-deep)}.error-wrap{text-align:center;padding-block:clamp(60px,12vw,120px)}.error-wrap img{width:160px;margin:0 auto 24px}.error-code{font-size:clamp(3rem,12vw,5rem);font-weight:800;color:var(--brand-strong);line-height:1;margin:0}