*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Noto Sans SC",system-ui,sans-serif;background:#fff;color:#1e3a8a;line-height:1.75;font-size:16px}
a{color:#2563eb;text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.container{max-width:1080px;margin:0 auto;padding:0 20px}
.site-header{background:#fff;border-bottom:2px solid #bfdbfe;position:sticky;top:0;z-index:200}
.header-row{display:flex;align-items:center;justify-content:space-between;padding:12px 0;position:relative}
.brand{display:flex;align-items:center;gap:10px;color:#1e3a8a}.brand:hover{text-decoration:none}.brand b{color:#2563eb}.brand img{border-radius:6px}
.site-nav ul{display:flex;gap:16px;list-style:none;flex-wrap:wrap}.site-nav a{color:#57534e;font-size:.9rem}.site-nav a.active{color:#2563eb;font-weight:600;border-bottom:2px solid #2563eb}
.mag-hero{padding:36px 0 20px;border-bottom:1px solid #dbeafe}
.mag-hero .tag{display:inline-block;color:#2563eb;font-weight:700;font-size:.78rem;letter-spacing:.04em;margin-bottom:10px}
.mag-hero h1{font-size:1.85rem;line-height:1.3;margin-bottom:14px;max-width:860px}
.mag-hero .lead{color:#1e40af;max-width:780px;font-size:1.02rem}
.mag-toc{display:flex;flex-wrap:wrap;gap:10px 18px;padding:14px 0 8px;font-size:.86rem}
.mag-toc a{color:#1d4ed8}
.mag-grid{display:grid;grid-template-columns:2fr 1fr;gap:28px;padding:28px 0 40px}
.mag-main h2{font-size:1.2rem;margin:22px 0 10px;padding-left:12px;border-left:4px solid #2563eb;color:#1e3a8a}
.mag-main p{color:#1e40af;margin-bottom:10px}
.mag-main figure{margin:16px 0;border-radius:8px;overflow:hidden;border:1px solid #bfdbfe}
.mag-main figcaption{font-size:.8rem;color:#64748b;margin-top:6px}
.mag-side{position:sticky;top:72px;align-self:start}
.side-box{background:#eff6ff;border:1px solid #bfdbfe;border-radius:12px;padding:16px 18px;margin-bottom:16px}
.side-box h2{font-size:1rem;margin-bottom:8px;color:#1d4ed8}.side-box p{font-size:.9rem;color:#1e40af;margin-bottom:8px}
.faq{background:#eff6ff;padding:40px 0 48px;border-top:1px solid #bfdbfe}
.faq h2{text-align:center;margin-bottom:16px}.faq-item{background:#fff;border:1px solid #bfdbfe;border-radius:10px;padding:14px 16px;max-width:860px;margin:0 auto 10px}
.faq-item h3{color:#2563eb;font-size:.95rem;margin-bottom:6px}.faq-item p{margin:0;color:#475569;font-size:.92rem}
.error-page h1{color:#2563eb}
@media(max-width:860px){.mag-grid{grid-template-columns:1fr}.mag-side{position:static}}

.prose-page{padding:36px 0 48px;max-width:720px}
.prose-page h1{font-size:1.5rem;margin-bottom:16px}
.prose-page h2{font-size:1.1rem;margin:20px 0 8px}
.prose-page p{margin-bottom:12px;color:#444}
.site-footer{background:#fafaf9;border-top:1px solid #e7e5e4;padding:26px 0;text-align:center;font-size:.88rem;color:#78716c}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 16px;margin-bottom:10px}
.footer-links a{color:#57534e}
.error-page{text-align:center;padding:80px 20px}
.error-page h1{font-size:3rem;margin-bottom:12px}
.ads-top-bar{background:#fafafa;border-bottom:1px solid #e7e5e4;padding:10px 0}
.applist-title{font-size:.78rem;color:#57534e;text-align:center;margin-bottom:6px}
#ads{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}
#ads .caption{font-size:.7rem;color:#78716c;margin-top:4px;text-align:center;max-width:70px;line-height:1.3}
.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:#444;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)}
@media(max-width:720px){
  .nav-toggle{display:flex}
  .site-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid #e7e5e4;padding:12px 20px}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:10px}
}