*,*::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:#c62828;text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
.site-header{background:#fff;border-bottom:2px solid #b71c1c;position:sticky;top:0;z-index:300}
.header-inner{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:4px}.brand em{color:#c62828;font-style:normal;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:#b71c1c;font-weight:600;border-bottom:2px solid #c62828;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:#ffebee;border-bottom:1px solid #ef9a9a;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}
.rb-hero{padding:32px 0 0;display:flex;gap:0;align-items:stretch}
.rb-ribbon{width:48px;background:linear-gradient(180deg,#b71c1c,#d32f2f);flex-shrink:0;position:relative}
.rb-ribbon::after{content:"验真";writing-mode:vertical-rl;color:#fff;font-size:.72rem;letter-spacing:.2em;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}
.rb-hero-body{flex:1;padding:28px 24px 24px;border:1px solid #ffcdd2;border-left:none;background:#fff}
.rb-hero .tag{font-size:.76rem;color:#c62828;margin-bottom:10px;display:block}
.rb-hero h1{font-size:1.68rem;line-height:1.35;margin-bottom:14px;color:#b71c1c}
.rb-hero .lead{color:#333;margin-bottom:10px;font-size:1rem;text-align:justify}
.rb-body{padding:28px 0 40px;display:flex;gap:0}
.rb-side{width:48px;background:#ffcdd2;flex-shrink:0}
.rb-content{flex:1;border:1px solid #ffcdd2;border-left:none;padding:0 24px 24px}
.rb-section{margin-bottom:28px;padding:24px 0;border-bottom:1px dotted #ef9a9a;position:relative;padding-left:20px}
.rb-section::before{content:"";position:absolute;left:-24px;top:28px;width:12px;height:12px;background:#c62828;border-radius:50%;border:3px solid #fff;box-shadow:0 0 0 2px #ef9a9a}
.rb-section h2{font-size:1.1rem;color:#b71c1c;margin-bottom:12px}
.rb-section p{margin-bottom:11px;color:#333;font-size:.95rem;text-align:justify}
.rb-section ul{margin:10px 0 12px 18px;color:#444;font-size:.92rem}
.rb-section li{margin-bottom:5px}
.rb-section figure{margin:16px 0;border:1px solid #ddd}
.rb-section figcaption{font-size:.78rem;color:#666;padding:6px 10px;background:#fafafa}
.rb-note{padding:12px 16px;background:#ffebee;border-left:4px solid #c62828;font-size:.9rem;color:#b71c1c;margin:14px 0}
.rb-faq{padding:28px 0 24px;border-top:2px solid #b71c1c}
.rb-faq h2{font-size:1.18rem;margin-bottom:16px;color:#b71c1c}
.rb-faq details{border:1px solid #ef9a9a;margin-bottom:8px;background:#fff}
.rb-faq summary{padding:12px 16px;cursor:pointer;font-weight:500;list-style:none}
.rb-faq summary::-webkit-details-marker{display:none}
.rb-faq details[open] summary{border-bottom:1px solid #ffcdd2;background:#ffebee}
.rb-faq details p{padding:12px 16px;color:#444;font-size:.93rem}
.rb-close{padding:24px 0 36px}
.rb-close h2{font-size:1.08rem;margin-bottom:10px;color:#b71c1c}
.rb-close p{margin-bottom:10px;color:#333;font-size:.95rem;text-align:justify}
.related-read{padding:20px 0 36px;border-top:1px solid #ffcdd2}
.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 #ef9a9a;color:#c62828}
.related-grid a:hover{background:#ffebee;text-decoration:none}
.site-footer{background:#fafafa;border-top:2px solid #b71c1c;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 p{margin-bottom:12px;color:#333}
@media(max-width:768px){
.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}
.site-nav.is-open{display:block}.site-nav ul{flex-direction:column;gap:10px}
.rb-hero,.rb-body{flex-direction:column}.rb-ribbon,.rb-side{width:100%;height:36px;writing-mode:horizontal-tb}
.rb-ribbon::after{writing-mode:horizontal-tb;transform:translate(-50%,-50%)}
.rb-hero-body,.rb-content{border-left:1px solid #ffcdd2}
.rb-section::before{left:0;top:8px}
}