*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
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:2px solid #b2dfdb;position:sticky;top:0;z-index:200}
.header-inner{max-width:900px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;position:relative}
.brand{display:flex;align-items:center;gap:10px;color:#111;font-weight:600;font-size:.95rem}
.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,.site-nav a:hover{color:#00695c;font-weight:600;border-bottom:2px solid #00695c;text-decoration:none}
.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}
.hero-acc{max-width:900px;margin:0 auto;padding:36px 20px 28px;border-bottom:1px solid #e0f2f1}
.hero-acc .tag{display:inline-block;font-size:.76rem;color:#00695c;border:1px solid #80cbc4;padding:4px 14px;border-radius:999px;margin-bottom:14px}
.hero-acc h1{font-size:1.75rem;line-height:1.35;margin-bottom:16px;color:#111}
.hero-acc .lead{color:#333;margin-bottom:12px;font-size:1.02rem;text-align:justify}
.acc-wrap{max-width:900px;margin:0 auto;padding:28px 20px 48px}
.acc-item{border:1px solid #b2dfdb;border-radius:12px;margin-bottom:12px;overflow:hidden;background:#fff}
.acc-item summary{padding:18px 22px;cursor:pointer;font-weight:600;font-size:1.05rem;color:#004d40;list-style:none;display:flex;align-items:center;gap:12px;background:#e0f2f1}
.acc-item summary::-webkit-details-marker{display:none}
.acc-item summary::before{content:attr(data-num);flex-shrink:0;width:32px;height:32px;border-radius:8px;background:#00695c;color:#fff;font-size:.85rem;display:flex;align-items:center;justify-content:center;font-weight:700}
.acc-item[open] summary{border-bottom:1px solid #b2dfdb}
.acc-body{padding:20px 22px 24px}
.acc-body p{margin-bottom:12px;color:#333;text-align:justify;font-size:.97rem}
.acc-body figure{margin:16px 0;border:1px solid #e0e0e0;border-radius:8px;overflow:hidden}
.acc-body figcaption{font-size:.8rem;color:#666;padding:8px 12px;background:#fafafa}
.tip-box{margin:14px 0;padding:14px 18px;background:#e8f5e9;border-left:4px solid #00695c;border-radius:0 8px 8px 0;font-size:.93rem;color:#2e7d32}
.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:14px;margin-bottom:10px}
.prose-page{max-width:760px;margin:0 auto;padding:32px 20px 48px}
.prose-page h1{font-size:1.5rem;margin-bottom:16px}
.prose-page p{margin-bottom:12px;color:#333}
@media(max-width:720px){
  .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:10px}
  .hero-acc h1{font-size:1.4rem}
}