:root{--bg:#16140F;--bg2:#1f1c15;--paper:#EFE6D2;--ink:#26210F;--muted:#6b6247;--accent:#E0A526;--light:#EFE6D2;--dim:#b9ae92;--line:#d6c9aa;--serif:Georgia,"Times New Roman","Hiragino Mincho ProN","Songti TC","AppleMyungjo",serif}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;color-scheme:dark}
body{margin:0;background:var(--bg);color:var(--light);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Hiragino Sans","Apple SD Gothic Neo","PingFang TC","Noto Sans",Helvetica,Arial,sans-serif}
img{max-width:100%;height:auto}
a{color:var(--accent)}
a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px}
.wrap{max-width:960px;margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-999px;top:8px;background:var(--accent);color:var(--bg);padding:8px 12px;border-radius:6px;z-index:10}
.skip:focus{left:8px}
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:10px;font:700 19px var(--serif);color:var(--light);text-decoration:none}
.brand img{width:34px;height:34px;border-radius:8px}
.top nav{display:flex;gap:16px;flex-wrap:wrap}
.top nav a{color:var(--light);opacity:.8;text-decoration:none;font-size:15px;padding:6px 0}
.top nav a:hover{color:var(--accent);opacity:1}
.hero{position:relative}
.hero-art{display:block;width:100%;aspect-ratio:21/9;object-fit:cover;object-position:62% 40%}
.hero-text{position:relative;margin-top:-36px}
.stamp{display:inline-block;border:2px solid var(--accent);color:var(--accent);background:var(--bg);font:700 12px/1 ui-monospace,Menlo,monospace;letter-spacing:.2em;padding:6px 10px;border-radius:4px;transform:rotate(-3deg);margin:0 0 12px}
h1{font:700 clamp(38px,9vw,64px)/1.05 var(--serif);margin:0 0 12px}
.lead{font-size:clamp(17px,2.4vw,20px);color:#e2d8c1;max-width:40em;margin:0 0 18px}
.lead strong{color:var(--light)}
.cta-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.badge{display:inline-block;line-height:0}
.badge img{width:150px;height:50px}
.small{font-size:14px;color:var(--dim);margin:0}
.facts{list-style:none;padding:0;margin:20px 0 8px;display:flex;flex-wrap:wrap;gap:8px}
.facts li{border:1px solid #4a4331;background:var(--bg2);border-radius:999px;padding:5px 12px;font-size:14px;color:#e2d8c1}
section{margin-top:28px}
.paper{background:var(--paper);color:var(--ink);border-radius:6px;border-top:6px solid var(--accent);padding:22px 18px 24px;box-shadow:0 6px 18px rgba(0,0,0,.35)}
.paper h2{font:700 clamp(24px,4vw,30px)/1.2 var(--serif);margin:0 0 8px;color:var(--ink)}
.paper h3{font:700 19px/1.3 var(--serif);margin:22px 0 4px;color:var(--ink)}
.paper p,.paper li{color:var(--ink)}
.paper a{color:#7a5200}
.paper strong{color:#000}
.steps{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:14px;counter-reset:s}
.steps li{display:flex;gap:14px;align-items:flex-start;counter-increment:s}
.steps img{width:96px;height:96px;border-radius:8px;border:1px solid var(--line);flex:none}
.steps h3{margin:0 0 2px}
.steps h3::before{content:counter(s) ". ";color:#a06f00}
.steps p{margin:0}
.roles{padding-left:20px}
.roles li{margin:4px 0}
.cats{list-style:none;padding:0;margin:16px 0 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:10px}
.cats li{position:relative;background:#f7f1e3;border:1px solid var(--line);border-radius:8px;padding:8px 6px;text-align:center;font-size:14px;line-height:1.25}
.cats img{display:block;width:64px;height:64px;margin:0 auto 6px;border-radius:6px}
.cats em{position:absolute;top:4px;right:4px;font:700 9px/1 ui-monospace,Menlo,monospace;letter-spacing:.06em;background:var(--ink);color:var(--accent);padding:3px 4px;border-radius:3px;font-style:normal}
.specs{margin:12px 0 0;display:grid;gap:0}
.specs div{display:grid;grid-template-columns:minmax(110px,34%) 1fr;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line)}
.specs div:last-child{border-bottom:0}
.specs dt{font-weight:700}
.specs dd{margin:0}
.faq h3{margin-top:20px}
.faq p{margin:4px 0 0}
.final{display:flex;align-items:flex-end;gap:18px;margin-top:36px;margin-bottom:12px}
.final>img{width:72px;height:auto;flex:none}
.final h2{font:700 28px/1.2 var(--serif);margin:0 0 4px}
.final p{margin:0 0 12px;color:#e2d8c1}
footer{margin-top:40px;padding-top:18px;padding-bottom:40px;border-top:1px solid #3a3526;color:var(--dim);font-size:14px}
footer a{color:var(--dim)}
.langs{display:flex;flex-wrap:wrap;gap:6px 14px;margin-bottom:8px}
.langs a{text-decoration:none;padding:4px 0}
.langs a[aria-current]{color:var(--accent);font-weight:700}
.article{max-width:760px}
.article h1{font-size:clamp(32px,7vw,48px);margin-top:12px}
.toc{margin:20px 0;padding:16px 18px}
.toc ol{margin:0;padding-left:20px}
.prose h2{margin-top:28px}
.prose h2:first-child{margin-top:0}
.rule-steps{padding-left:0;list-style:none}
.rule-steps li{margin:10px 0}
.app-box{display:flex;gap:14px;align-items:flex-start;margin-top:24px}
.app-box img{border-radius:14px;flex:none}
.app-box h2{font-size:22px}
@media (min-width:720px){
  .paper{padding:28px 32px 32px}
  .hero-text{margin-top:-90px}
  .steps{grid-template-columns:1fr 1fr;gap:20px}
  .steps img{width:120px;height:120px}
  .final>img{width:93px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
.hero picture{display:block;position:relative}
.hero picture::after{content:"";position:absolute;left:0;right:0;bottom:0;height:55%;background:linear-gradient(rgba(22,20,15,0),var(--bg))}
:lang(ja) h1,:lang(ja) h2,:lang(ja) h3,:lang(ja) p,:lang(ja) li{word-break:auto-phrase}
h1,h2{text-wrap:balance}
.cmp{overflow-x:auto;margin:14px 0}
.cmp table{border-collapse:collapse;min-width:640px;font-size:15px}
.cmp th,.cmp td{border-bottom:1px dashed var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.cmp thead th{border-bottom:2px solid var(--ink)}
.cmp caption{text-align:left;color:var(--muted);font-size:14px;padding-bottom:6px}