*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:18px}
body{font-family:"Noto Sans SC",system-ui,sans-serif;background:#fff;color:#1a1a1a;line-height:1.88}
a{color:#1565c0;text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.site-header{background:#fff;border-bottom:2px solid #e3f2fd;position:sticky;top:0;z-index:200}
.header-inner{max-width:960px;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:12px;color:#111;font-weight:600;font-size:1.1rem}
.brand em{font-style:normal;color:#1565c0;font-weight:700}
.site-nav ul{display:flex;flex-wrap:wrap;gap:8px 20px;list-style:none}
.site-nav a{color:#555;font-size:1rem;padding:6px 0}
.site-nav a.active{color:#1565c0;font-weight:700;border-bottom:3px solid #1565c0}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:10px;flex-direction:column;gap:6px}
.nav-toggle span{display:block;width:26px;height:3px;background:#333;transition:.2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(9px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-9px) rotate(-45deg)}
.ads-top-bar{background:#fafafa;border-bottom:1px solid #eee;padding:12px 0}
.applist-title{font-size:.85rem;color:#666;text-align:center;margin-bottom:8px}
#ads{display:flex;justify-content:center;flex-wrap:wrap;gap:14px}
.hero-zig{max-width:960px;margin:0 auto;padding:36px 20px 28px;text-align:center}
.hero-zig .tag{display:inline-block;font-size:.95rem;font-weight:700;color:#1565c0;background:#e3f2fd;border:2px solid #90caf9;padding:6px 18px;border-radius:999px;margin-bottom:16px}
.hero-zig h1{font-size:2rem;line-height:1.35;margin-bottom:18px;color:#111}
.hero-zig .lead{text-align:left;font-size:1.12rem;color:#333;max-width:860px;margin:0 auto 12px;line-height:1.95}
.zig-wrap{max-width:960px;margin:0 auto;padding:0 20px 48px}
.zig-row{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center;margin-bottom:40px;scroll-margin-top:80px}
.zig-row:nth-child(even) .zig-text{order:2}
.zig-row:nth-child(even) .zig-media{order:1}
.zig-text h2{font-size:1.35rem;margin-bottom:14px;color:#111}
.zig-text p{margin-bottom:14px;color:#333;font-size:1.08rem;text-align:justify}
.zig-media figure{border:2px solid #e3f2fd;border-radius:16px;overflow:hidden}
.zig-media figcaption{font-size:.95rem;color:#666;padding:10px 14px;background:#fafafa;text-align:center}
.elder-box{margin:16px 0;padding:16px 20px;background:#e3f2fd;border-radius:12px;font-size:1.05rem;color:#0d47a1}
.zig-full{grid-column:1/-1;background:#fafafa;border:2px solid #e3f2fd;border-radius:16px;padding:28px;margin-top:12px}
.zig-full h2{font-size:1.25rem;margin-bottom:14px;text-align:center}
.zig-full p{margin-bottom:12px;font-size:1.05rem;color:#333;text-align:justify}
.site-footer{background:#fafafa;border-top:2px solid #e3f2fd;padding:32px 20px;text-align:center;font-size:1rem;color:#666}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 20px;margin-bottom:12px}
.prose-page{max-width:780px;margin:0 auto;padding:36px 20px 56px}
.prose-page h1{font-size:1.75rem;margin-bottom:18px}
.prose-page p{margin-bottom:14px;color:#333;font-size:1.05rem}
@media(max-width:760px){
  .zig-row{grid-template-columns:1fr}
  .zig-row:nth-child(even) .zig-text,.zig-row:nth-child(even) .zig-media{order:unset}
  html{font-size:17px}
  .hero-zig h1{font-size:1.65rem}
  .nav-toggle{display:flex}
  .site-nav{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:2px solid #e3f2fd;padding:14px 20px;display:none}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:0}
}