*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC",sans-serif;background:#fff;color:#1a1a1a;line-height:1.75;font-size:16px}
a{color:#00695c;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.container{max-width:1140px;margin:0 auto;padding:0 20px}
.site-header{background:#fff;border-bottom:2px solid #004d40;position:sticky;top:0;z-index:300}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0;position:relative}
.brand{display:flex;align-items:center;gap:10px;color:#111;font-weight:600;font-size:.95rem}
.brand:hover{text-decoration:none}
.brand img{border-radius:6px}
.brand b{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:#004d40;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:#e0f2f1;border-bottom:1px solid #b2dfdb;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}
.dual-hero{display:grid;grid-template-columns:1fr 1fr;gap:0;border-bottom:3px solid #004d40}
.hero-panel{padding:40px 32px;display:flex;flex-direction:column;justify-content:center;min-height:280px}
.hero-panel:first-child{background:linear-gradient(135deg,#e0f2f1 0%,#fff 100%);border-right:1px solid #b2dfdb}
.hero-panel:last-child{background:linear-gradient(135deg,#fff 0%,#b2dfdb 100%)}
.hero-panel .tag{display:inline-block;background:#004d40;color:#fff;font-size:.72rem;padding:3px 12px;border-radius:3px;margin-bottom:12px;font-weight:500;width:fit-content}
.hero-panel h1{font-size:1.55rem;line-height:1.35;margin-bottom:12px;color:#004d40}
.hero-panel .lead{font-size:.98rem;color:#333;text-align:justify;margin-bottom:0}
.hero-intro{padding:28px 0;border-bottom:1px solid #b2dfdb}
.hero-intro p{color:#333;font-size:1rem;text-align:justify;max-width:900px;margin:0 auto}
.dual-body{padding:32px 0}
.dual-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.dual-col section{margin-bottom:28px;padding-bottom:24px;border-bottom:1px dotted #b2dfdb}
.dual-col section:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}
.dual-col h2{font-size:1.1rem;color:#004d40;margin-bottom:10px}
.dual-col p{margin-bottom:10px;color:#333;font-size:.95rem;text-align:justify}
.dual-col figure{margin:14px 0;border:1px solid #b2dfdb;border-radius:6px;overflow:hidden}
.dual-col figcaption{font-size:.78rem;color:#666;padding:6px 10px;background:#e0f2f1}
.dual-col ul{margin:10px 0 0 18px;font-size:.92rem;color:#444}
.dual-col li{margin-bottom:4px}
.dual-note{margin:12px 0;padding:10px 14px;background:#fff8e1;border-left:3px solid #ffa000;font-size:.9rem;color:#e65100}
.dual-faq{padding:32px 0;border-top:2px solid #004d40;background:#e0f2f1}
.dual-faq h2{font-size:1.2rem;text-align:center;margin-bottom:20px;color:#004d40}
.dual-faq details{border:1px solid #b2dfdb;margin-bottom:8px;border-radius:6px;background:#fff;max-width:820px;margin-left:auto;margin-right:auto}
.dual-faq summary{padding:12px 16px;cursor:pointer;font-weight:500;list-style:none}
.dual-faq summary::-webkit-details-marker{display:none}
.dual-faq details[open] summary{border-bottom:1px solid #e0f2f1;background:#fafafa}
.dual-faq details p{padding:12px 16px;color:#444;font-size:.93rem}
.dual-close{padding:28px 0 36px}
.dual-close h2{font-size:1.1rem;margin-bottom:10px;color:#004d40}
.dual-close p{margin-bottom:10px;color:#333;font-size:.95rem;text-align:justify}
.related-read{padding:20px 0 36px;border-top:1px solid #b2dfdb}
.related-read h2{font-size:1rem;margin-bottom:12px}
.related-grid{display:flex;flex-wrap:wrap;gap:10px 16px}
.related-grid a{font-size:.9rem;padding:6px 12px;border:1px solid #b2dfdb;color:#00695c;border-radius:4px}
.related-grid a:hover{background:#e0f2f1;text-decoration:none}
.site-footer{background:#e0f2f1;border-top:2px solid #004d40;padding:28px 0;text-align:center;font-size:.88rem;color:#666}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-bottom:10px}
.footer-links a{color:#555}
.prose-page{max-width:720px;margin:0 auto;padding:32px 20px 48px}
.prose-page h1{font-size:1.5rem;margin-bottom:16px}
.prose-page h2{font-size:1.1rem;margin:16px 0 8px}
.prose-page p{margin-bottom:12px;color:#333}
.error-page{text-align:center;padding:48px 20px 24px}
.error-page h1{font-size:3rem;color:#00695c}
@media(max-width:768px){
.nav-toggle{display:flex}
.site-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid #ddd;padding:12px 20px;box-shadow:0 4px 12px rgba(0,0,0,.08)}
.site-nav.is-open{display:block}
.site-nav ul{flex-direction:column;gap:10px}
.dual-hero{grid-template-columns:1fr}
.hero-panel:first-child{border-right:none;border-bottom:1px solid #b2dfdb}
.hero-panel h1{font-size:1.35rem}
.dual-grid{grid-template-columns:1fr;gap:0}
}