*{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:#f5f2ea;--ink:#1d2b2a;--accent:#c8722e;--accent2:#a95a1e;
  --deep:#153634;--soft:#ece6d8;--line:#ddd3bf;--muted:#5c6664;
  --foot-bg:#153634;--foot-fg:#e8ede9;
  --ff-disp:'Shippori Mincho',serif;--ff-body:'Zen Kaku Gothic New',sans-serif;
  --maxw:1000px;--radius:4px;
}
body{font-family:var(--ff-body);background:var(--bg);color:var(--ink);line-height:1.9;font-size:16px}

/* header */
.site-head{position:sticky;top:0;z-index:80;background:var(--deep);color:#fff}
.head-in{max-width:1160px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;min-height:66px;gap:20px}
.brand{display:flex;flex-direction:column;line-height:1.25}
.brand b{font-family:var(--ff-disp);font-weight:700;font-size:19px;letter-spacing:.02em}
.brand small{font-size:11px;letter-spacing:.18em;color:#ffffff}
.main-nav ul{display:flex;flex-wrap:wrap;gap:4px}
.main-nav a{display:block;padding:10px 14px;font-size:14px;color:#ffffff;border-radius:2px;transition:.2s;position:relative}
.main-nav a:hover{color:#fff}
.main-nav a.is-active{color:#fff}
.main-nav a.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--accent)}
.nav-toggle{display:none;background:none;border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:3px;padding:8px 12px;font:inherit;font-size:13px;cursor:pointer}

/* hero */
.hero{position:relative;color:#fff;overflow:hidden;background:var(--deep)}
.hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.22}
.hero::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(105deg,rgba(15,40,38,.94),rgba(15,40,38,.78))}
.hero-in{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;padding:104px 24px 96px}
.hero .eye{font-family:var(--ff-disp);letter-spacing:.22em;font-size:12px;color:#eaa869;margin-bottom:20px}
.hero h1{font-family:var(--ff-disp);font-weight:700;font-size:clamp(30px,5.6vw,54px);line-height:1.32;margin-bottom:22px;color:#fff;text-shadow:0 2px 12px rgba(0,0,0,.45)}
.hero p{max-width:52ch;color:rgba(255,255,255,.95);font-size:16px}

/* home intro */
.home-lead{max-width:760px;margin:0 auto;padding:70px 24px 30px;text-align:center}
.home-lead h2{font-family:var(--ff-disp);font-weight:700;font-size:clamp(22px,3.6vw,32px);margin-bottom:20px;line-height:1.5}
.home-lead p{color:var(--muted)}

/* card grid */
.card-grid{max-width:var(--maxw);margin:0 auto;padding:40px 24px 90px;display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:0 22px 44px -30px rgba(21,54,52,.6);border-color:var(--accent)}
.card .thumb{aspect-ratio:16/9;overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:cover}
.card .b{padding:24px 24px 26px}
.card .num{font-family:var(--ff-disp);font-size:13px;letter-spacing:.14em;color:var(--accent);margin-bottom:8px}
.card h3{font-family:var(--ff-disp);font-weight:700;font-size:19px;margin-bottom:8px}
.card p{color:var(--muted);font-size:14.5px}
.card .go{margin-top:16px;font-size:13px;color:var(--accent2);font-weight:700}

/* subpage */
.page-main{max-width:var(--maxw);margin:0 auto;padding:64px 24px 84px}
.page-head{border-bottom:2px solid var(--line);padding-bottom:28px;margin-bottom:44px}
.eyebrow{font-family:var(--ff-disp);letter-spacing:.22em;font-size:12px;color:var(--accent);margin-bottom:14px}
.page-head h1{font-family:var(--ff-disp);font-weight:700;font-size:clamp(26px,4.6vw,42px);line-height:1.34;margin-bottom:16px}
.lead{color:var(--muted);font-size:16.5px;max-width:64ch}
.intro-txt{margin-bottom:48px}
.intro-txt p{margin-bottom:16px}
.block{margin:0 0 46px;padding-left:22px;border-left:4px solid var(--accent)}
.block h2{font-family:var(--ff-disp);font-weight:700;font-size:clamp(20px,3.2vw,27px);margin-bottom:16px}
.block p{margin-bottom:15px}
.block.has-img{border-left:none;padding-left:0;display:grid;grid-template-columns:1.2fr .9fr;gap:34px;align-items:center}
.block.has-img .block-txt{padding-left:22px;border-left:4px solid var(--accent)}
.block-fig img{border-radius:var(--radius);width:100%;aspect-ratio:4/3;object-fit:cover;box-shadow:0 18px 40px -26px rgba(21,54,52,.6)}
@media(max-width:760px){.block.has-img{grid-template-columns:1fr;gap:20px}}
.page-nav{display:flex;justify-content:space-between;gap:16px;margin-top:60px;padding-top:30px;border-top:1px solid var(--line);flex-wrap:wrap}
.page-nav a{font-size:14px;color:var(--accent2);font-weight:700}
.page-nav a:hover{color:var(--accent)}

/* sitemap list */
.sitemap-list{border-top:1px solid var(--line)}
.sitemap-list li{border-bottom:1px solid var(--line)}
.sitemap-list a{display:block;padding:24px 8px;transition:.2s}
.sitemap-list a:hover{background:var(--soft);padding-left:18px}
.sitemap-list .t{font-family:var(--ff-disp);font-weight:700;font-size:18px;margin-bottom:5px;display:flex;align-items:baseline;gap:12px}
.sitemap-list .t::before{content:"—";color:var(--accent)}
.sitemap-list .d{color:var(--muted);font-size:14.5px;padding-left:26px}

/* footer */
.site-footer{background:var(--foot-bg);color:var(--foot-fg);margin-top:20px}
.ft-in{max-width:var(--maxw);margin:0 auto;padding:56px 24px 24px;text-align:center}
.ft-name{font-family:var(--ff-disp);font-weight:700;font-size:24px;margin-bottom:10px}
.ft-tag{opacity:.7;font-size:14px;margin-bottom:24px}
.ft-nav ul{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 24px;font-size:14px;margin-bottom:22px}
.ft-nav a{opacity:.82;transition:.2s}
.ft-nav a:hover{opacity:1;color:var(--accent)}
.ft-copy{font-size:12px;opacity:.55;text-align:center;padding:16px;border-top:1px solid rgba(255,255,255,.12)}

.to-top{position:fixed;right:20px;bottom:20px;width:46px;height:46px;border-radius:50%;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(0,0,0,.5)}
.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}

@media(max-width:820px){
  .nav-toggle{display:block}
  .main-nav{position:absolute;top:66px;left:0;right:0;background:var(--deep);border-top:1px solid rgba(255,255,255,.1);max-height:0;overflow:hidden;transition:max-height .3s ease}
  .main-nav.open{max-height:420px}
  .main-nav ul{flex-direction:column;padding:8px 16px 16px;gap:0}
  .main-nav a{padding:14px 8px;border-bottom:1px solid rgba(255,255,255,.08)}
  .main-nav a.is-active::after{display:none}
  .head-in{position:relative;flex-wrap:wrap}
  .card-grid{grid-template-columns:1fr}
}