*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Noto Sans SC",system-ui,sans-serif;background:#fff;color:#1a1a1a;line-height:1.78;font-size:16px}
a{color:#00695c;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}

.site-header{background:#fff;border-bottom:1px solid #e8e8e8;position:sticky;top:0;z-index:300}
.header-inner{max-width:1140px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:#111;font-weight:600;font-size:1rem}
.brand:hover{text-decoration:none}
.brand img{border-radius:8px}
.brand em{font-style:normal;color:#00695c;font-weight:700}
.site-nav ul{display:flex;flex-wrap:wrap;gap:6px 18px;list-style:none}
.site-nav a{color:#555;font-size:.9rem;padding:4px 0}
.site-nav a.active{color:#00695c;font-weight:600;border-bottom:2px solid #00695c}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:22px;height:2px;background:#333;transition:.2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.ads-top-bar{background:#fafafa;border-bottom:1px solid #eee;padding:10px 0}
.applist-title{font-size:.78rem;color:#888;text-align:center;margin-bottom:6px}
#ads{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}
#ads .caption{font-size:.7rem;color:#666;margin-top:4px;text-align:center;max-width:70px;line-height:1.3}

.page-wrap{max-width:1140px;margin:0 auto;padding:24px 20px 52px}

.hero-zone{margin-bottom:32px}
.hero-tag{display:inline-block;background:#e0f2f1;color:#00695c;font-size:.82rem;font-weight:600;padding:5px 14px;border-radius:999px;margin-bottom:14px;letter-spacing:.04em}
.hero-zone h1{font-size:1.75rem;line-height:1.35;margin-bottom:14px;color:#111}
.hero-lead{color:#444;font-size:1.02rem;margin-bottom:22px;max-width:820px}

.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:36px}
.bento-card{background:#fafafa;border:1px solid #ececec;border-radius:12px;padding:18px 16px;transition:border-color .2s,box-shadow .2s}
.bento-card:hover{border-color:#80cbc4;box-shadow:0 4px 16px rgba(0,105,92,.08)}
.bento-card.wide{grid-column:span 2}
.bento-card.tall{grid-row:span 1}
.bento-card .num{font-size:.72rem;color:#00897b;font-weight:700;letter-spacing:.08em;margin-bottom:6px}
.bento-card h3{font-size:.95rem;color:#222;margin-bottom:6px}
.bento-card p{font-size:.86rem;color:#555;line-height:1.55}

.tab-shell{border:1px solid #e8e8e8;border-radius:14px;overflow:hidden;margin-bottom:36px;background:#fff}
.tab-bar{display:flex;flex-wrap:wrap;background:#fafafa;border-bottom:1px solid #e8e8e8}
.tab-btn{flex:1 1 auto;min-width:100px;padding:14px 16px;background:none;border:none;border-bottom:3px solid transparent;cursor:pointer;font-family:inherit;font-size:.88rem;color:#666;font-weight:500;transition:.2s}
.tab-btn:hover{color:#00695c;background:#f0faf8}
.tab-btn[aria-selected="true"]{color:#00695c;border-bottom-color:#00695c;background:#fff;font-weight:600}
.tab-panel{display:none;padding:26px 24px 30px}
.tab-panel.is-active{display:block}
.tab-panel h2{font-size:1.18rem;margin-bottom:12px;color:#222}
.tab-panel p{margin-bottom:11px;color:#333}
.tab-panel ul{margin:10px 0 12px 20px;color:#333}
.tab-panel li{margin-bottom:6px}
.tab-panel figure{margin:18px 0;border-radius:10px;overflow:hidden;border:1px solid #eee}
.tab-panel figcaption{font-size:.84rem;color:#777;padding:8px 12px;background:#fafafa}
.tip-box{background:#fff8e1;border-left:4px solid #ff8f00;padding:14px 18px;margin:16px 0;border-radius:0 8px 8px 0;font-size:.94rem;color:#444}

.hscroll-wrap{margin-bottom:36px}
.hscroll-wrap h2{font-size:1.15rem;margin-bottom:6px;color:#222}
.hscroll-sub{font-size:.88rem;color:#777;margin-bottom:16px}
.hscroll{display:flex;gap:16px;overflow-x:auto;padding:8px 4px 18px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:thin;scrollbar-color:#80cbc4 #f0f0f0}
.hscroll::-webkit-scrollbar{height:6px}
.hscroll::-webkit-scrollbar-thumb{background:#80cbc4;border-radius:3px}
.hscroll-card{flex:0 0 260px;scroll-snap-align:start;border:1px solid #eee;border-radius:12px;overflow:hidden;background:#fff}
.hscroll-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hscroll-card .cap{padding:10px 12px;font-size:.82rem;color:#555;line-height:1.45}

.closing-block{background:#f5faf9;border:1px solid #dcedc8;border-radius:14px;padding:26px 24px;margin-bottom:28px}
.closing-block h2{font-size:1.12rem;margin-bottom:12px;color:#222}
.closing-block p{margin-bottom:10px;color:#333}
.internal-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.internal-links a{display:inline-block;padding:8px 14px;background:#fff;border:1px solid #e0e0e0;border-radius:999px;font-size:.88rem;color:#555}
.internal-links a:hover{background:#e0f2f1;border-color:#80cbc4;color:#00695c;text-decoration:none}

.site-footer{background:#fafafa;border-top:1px solid #eee;padding:28px 20px;text-align:center;font-size:.88rem;color:#666}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 16px;margin-bottom:10px}
.footer-links a{color:#555}

.prose-page{max-width:780px;margin:0 auto;padding:32px 20px 48px}
.prose-page h1{font-size:1.5rem;margin-bottom:16px}
.prose-page h2{font-size:1.12rem;margin:22px 0 10px}
.prose-page p{margin-bottom:12px;color:#333}
.error-page{text-align:center;padding:60px 20px}
.error-page h1{font-size:3rem;color:#00695c}

@media(max-width:900px){
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento-card.wide{grid-column:span 2}
}
@media(max-width:640px){
  .bento{grid-template-columns:1fr}
  .bento-card.wide{grid-column:span 1}
  .tab-btn{min-width:50%;font-size:.82rem;padding:12px 10px}
  .hero-zone h1{font-size:1.38rem}
  .nav-toggle{display:flex}
  .site-nav{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid #eee;padding:12px 20px;display:none;box-shadow:0 4px 12px rgba(0,0,0,.06)}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:0}
  .site-nav li{border-bottom:1px solid #f0f0f0}
  .site-nav a{display:block;padding:12px 0}
  .header-inner{position:relative;flex-wrap:wrap}
  .hscroll-card{flex:0 0 220px}
}