*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
body{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
@media (prefers-reduced-motion: reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

:root{
  --bg:#fbf7f0;--ink:#2a2420;--accent:#c1662f;--accent2:#9a4f24;
  --soft:#f2e9db;--line:#e3d6c2;--muted:#6f6357;--foot-bg:#2a2420;--foot-fg:#f0e7d8;
  --ff-disp:'Zen Old Mincho',serif;--ff-body:'Zen Kaku Gothic New',sans-serif;
  --maxw:980px;--radius:4px;
}
body{font-family:var(--ff-body);background:var(--bg);color:var(--ink);line-height:1.9;font-size:16px}
.shell{position:relative;padding-top:70px}

.rb-bar{position:fixed;top:0;left:0;right:0;height:70px;display:flex;align-items:center;justify-content:space-between;padding:0 34px;z-index:80;background:var(--bg);border-bottom:1px solid var(--line)}
.rb-bar .logo{font-family:var(--ff-disp);font-weight:700;font-size:21px;color:var(--ink);letter-spacing:.02em}
.rb-nav ul{display:flex;gap:30px}
.rb-nav a{font-size:14px;font-weight:500;color:var(--muted);transition:.2s;position:relative;padding:4px 0}
.rb-nav a:hover,.rb-nav a.is-active{color:var(--accent)}
.rb-nav a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent)}

.cn-hero{max-width:var(--maxw);margin:0 auto;padding:70px 24px 40px;display:grid;grid-template-columns:1fr .85fr;gap:48px;align-items:center}
.cn-hero .k{font-family:var(--ff-disp);color:var(--accent);font-weight:600;letter-spacing:.2em;font-size:13px;margin-bottom:18px}
.cn-hero h1{font-family:var(--ff-disp);font-weight:700;font-size:clamp(28px,4.4vw,44px);line-height:1.5;margin-bottom:22px;letter-spacing:.01em}
.cn-hero p{color:var(--muted);line-height:2}
.cn-hero figure img{border-radius:var(--radius);aspect-ratio:5/4;object-fit:cover;filter:sepia(.06)}

.cn-lead{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cn-lead .in{max-width:var(--maxw);margin:0 auto;padding:34px 24px}
.cn-lead p{font-family:var(--ff-disp);font-size:clamp(17px,2.4vw,21px);line-height:1.85}
.cn-lead .em{color:var(--accent)}

.cn-guide{max-width:var(--maxw);margin:0 auto;padding:56px 24px 90px}
.cn-guide h2{font-family:var(--ff-disp);font-weight:700;font-size:26px;margin-bottom:8px}
.cn-guide .sub{color:var(--muted);font-size:14.5px;margin-bottom:30px}
.cn-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cn-cards .item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:.25s;position:relative}
.cn-cards .item:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:0 16px 34px -22px rgba(90,50,20,.5)}
.cn-cards .num{font-family:var(--ff-disp);color:var(--accent);font-size:13px;letter-spacing:.1em;margin-bottom:12px;display:block}
.cn-cards b{font-family:var(--ff-disp);display:block;font-size:19px;margin-bottom:10px}
.cn-cards p{color:var(--muted);font-size:14px}
.cn-cards .go{margin-top:16px;font-size:13px;font-weight:700;color:var(--accent)}
@media(max-width:820px){.rb-nav{display:none}.burger{display:flex}.cn-hero{grid-template-columns:1fr;gap:28px}.cn-cards{grid-template-columns:1fr}}

.page-main{max-width:var(--maxw);margin:0 auto;padding:64px 24px 84px}
.page-head{margin-bottom:46px;border-bottom:2px solid var(--accent);padding-bottom:26px}
.eyebrow{font-family:var(--ff-disp);letter-spacing:.22em;font-size:12px;color:var(--accent);text-transform:uppercase;margin-bottom:14px}
.page-head h1{font-family:var(--ff-disp);font-weight:700;font-size:clamp(26px,4.6vw,40px);line-height:1.4;margin-bottom:16px}
.lead{color:var(--muted);font-size:16.5px;max-width:64ch}
.block{margin:0 0 46px}
.block h2{font-family:var(--ff-disp);font-weight:700;font-size:clamp(20px,3.2vw,27px);margin-bottom:16px;padding-left:14px;border-left:5px solid var(--accent)}
.block h3{font-family:var(--ff-disp);font-weight:700;font-size:18px;margin:24px 0 10px;color:var(--accent2)}
.block p{margin-bottom:14px}
.block.has-img{display:grid;grid-template-columns:1.2fr .9fr;gap:36px;align-items:center}
.block.has-img h2{border:none;padding:0}
.block-fig img{border-radius:var(--radius);width:100%;aspect-ratio:4/3;object-fit:cover;filter:sepia(.06);box-shadow:0 18px 40px -26px rgba(90,50,20,.5)}
@media(max-width:760px){.block.has-img{grid-template-columns:1fr;gap:22px}}
.ctable{width:100%;border-collapse:collapse;margin:8px 0 18px;font-size:15px}
.ctable th,.ctable td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.ctable th{background:var(--soft);font-family:var(--ff-disp);font-weight:700}
.ctable tr:nth-child(even) td{background:#fff}
.pager{display:flex;justify-content:space-between;gap:14px;margin-top:56px;padding-top:26px;border-top:1px solid var(--line);font-size:14px}
.pager a{color:var(--accent);font-weight:700}
.pager a:hover{text-decoration:underline;text-underline-offset:4px}

.sitemap-list{border-top:1px solid var(--line)}
.sitemap-list li{border-bottom:1px solid var(--line)}
.sitemap-list a{display:block;padding:22px 6px;transition:.2s}
.sitemap-list a:hover{background:var(--soft);padding-left:16px}
.sitemap-list .t{font-family:var(--ff-disp);font-weight:700;font-size:18px;display:block;margin-bottom:4px}
.sitemap-list .t small{font-family:var(--ff-body);font-weight:400;color:var(--muted);font-size:12px;margin-left:10px}
.sitemap-list .d{color:var(--muted);font-size:14px}

.site-footer{background:var(--foot-bg);color:var(--foot-fg);margin-top:72px;border-top:4px solid var(--accent)}
.site-footer .ft-in{max-width:var(--maxw);margin:0 auto;padding:40px 24px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.site-footer .ft-name{font-family:var(--ff-disp);font-weight:700;font-size:19px}
.site-footer .ft-nav ul{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13.5px;list-style:none}
.site-footer a{color:inherit;opacity:.82;transition:.2s}
.site-footer a:hover{opacity:1;color:var(--accent)}
.site-footer .ft-copy{width:100%;text-align:center;font-size:12px;opacity:.5;padding-top:20px;margin-top:6px;border-top:1px solid rgba(255,255,255,.12)}

.to-top{position:fixed;right:20px;bottom:20px;width:46px;height:46px;border-radius:var(--radius);background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;opacity:0;pointer-events:none;transform:translateY(12px);transition:.3s;z-index:60;box-shadow:0 8px 20px -8px rgba(90,50,20,.6)}
.to-top.show{opacity:1;pointer-events:auto;transform:none}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.burger{display:none;width:42px;height:42px;background:none;border:none;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;padding:8px;color:var(--ink)}
.burger span{display:block;height:2px;background:currentColor;transition:.3s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer{display:none}
.drawer.open{display:block;position:absolute;top:70px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line)}
.drawer.open ul{flex-direction:column;padding:8px 24px 16px}
.drawer.open a{display:block;padding:12px 0;border-top:1px solid var(--line);font-weight:500}