*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--accent:#e11d48;--ink:#1a1a1a;--muted:#5c5c5c;--line:#e8e8e8;--bg:#fff;--max:980px}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC",system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.75;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.container{max-width:var(--max);margin:0 auto;padding:0 1.25rem}
.site-header{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:100}
.header-row{display:flex;align-items:center;justify-content:space-between;min-height:58px;gap:1rem}
.brand{display:flex;align-items:center;gap:.6rem;color:var(--ink);font-size:.95rem;text-decoration:none}
.brand b{color:var(--accent);font-weight:700}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);transition:.2s}
.site-nav ul{display:flex;gap:1.25rem;list-style:none}
.site-nav a{color:var(--muted);font-size:.9rem;text-decoration:none}
.site-nav a.active,.site-nav a:hover{color:var(--accent)}
.ads-top-bar{background:#fafafa;border-bottom:1px solid var(--line);padding:.5rem 0}
#applist{text-align:center}.applist-title{font-size:.8rem;color:var(--muted);margin-bottom:.35rem}
#ads{display:flex;justify-content:center;flex-wrap:wrap;gap:.5rem}
.hero{padding:2rem 0 1.5rem}.hero h1{font-size:clamp(1.35rem,3vw,1.75rem);line-height:1.35;margin-bottom:1rem}
.lead{color:var(--muted);font-size:1.02rem;margin-bottom:.85rem}
.link-strip{display:flex;flex-wrap:wrap;gap:.75rem;padding:1rem 0;border-bottom:1px solid var(--line);margin-bottom:1.5rem}
.link-strip a{padding:.35rem .85rem;border:1px solid var(--line);border-radius:999px;font-size:.85rem;color:var(--ink);background:#fafafa}
.link-strip a:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.content-fig{margin:1.25rem 0}
.content-fig img{width:100%;max-width:560px;margin:0 auto;border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,.06)}
.content-fig figcaption{font-size:.78rem;color:var(--muted);text-align:center;margin-top:.45rem}
.faq details{border:1px solid var(--line);border-radius:6px;margin-bottom:.5rem}
.faq summary{cursor:pointer;padding:.75rem 1rem;font-weight:600;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq details[open] summary{border-bottom:1px solid var(--line)}
.faq details p{padding:.75rem 1rem;font-size:.92rem;color:var(--muted)}
.related-read{padding:2rem 0 3rem;border-top:1px solid var(--line)}
.related-read h2{font-size:1rem;margin-bottom:1rem}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:.75rem}
.related-grid a{display:block;padding:.65rem;border:1px solid var(--line);border-radius:6px;text-align:center;font-size:.88rem;color:var(--ink)}
.related-grid a:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.site-footer{border-top:1px solid var(--line);padding:1.5rem 0 2rem;background:#fafafa}
.footer-links{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:.75rem}
.footer-links a{font-size:.85rem;color:var(--muted)}.site-footer p{font-size:.8rem;color:var(--muted)}
.page-head{padding:2rem 0 1rem}.page-head h1{font-size:1.6rem}
.prose-page{padding-bottom:3rem;max-width:720px}
.prose-page h2{font-size:1.15rem;margin:1.5rem 0 .75rem;color:var(--accent)}
.prose-page p{margin-bottom:1rem;text-align:justify;color:#333}
.error-page{padding:4rem 0;min-height:50vh;text-align:center}
.error-page h1{font-size:4rem;color:var(--accent)}
.callout{background:color-mix(in srgb,var(--accent) 8%,#fff);border-left:3px solid var(--accent);padding:.85rem 1rem;border-radius:0 6px 6px 0;font-size:.92rem;margin:1rem 0}
@media(max-width:768px){
  .nav-toggle{display:flex}
  .site-nav{position:absolute;top:58px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:1rem;display:none}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:.75rem}
  .nav-toggle.is-open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
  .nav-toggle.is-open span:nth-child(2){opacity:0}
  .nav-toggle.is-open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
}
.paper-masthead{text-align:center;padding:1.5rem 0;border-bottom:3px double var(--ink);margin-bottom:1.5rem}
.paper-masthead h1{font-size:1.75rem;font-family:Georgia,serif;letter-spacing:.02em}
.paper-date{font-size:.82rem;color:var(--muted);margin-top:.35rem}
.paper-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;padding-bottom:2rem}
.paper-col h2{font-size:1rem;border-bottom:1px solid var(--ink);padding-bottom:.35rem;margin-bottom:.75rem}
.paper-col p{font-size:.88rem;text-align:justify;margin-bottom:.75rem;line-height:1.7}
.paper-span{grid-column:span 3;border-top:1px solid var(--line);padding-top:1rem;margin-top:.5rem}
@media(max-width:768px){.paper-cols{grid-template-columns:1fr}.paper-span{grid-column:span 1}}