:root{--color-bg:#fff;--color-text:#1a1a1a;--color-muted:#666;--color-border:#ddd;--color-link:#1a1a1a;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);line-height:1.6;font-size:17px}
.container{max-width:720px;margin:0 auto;padding:0 20px}
a{color:var(--color-link);text-decoration:underline;text-underline-offset:2px}
a:hover{text-decoration-thickness:2px}
h1,h2,h3{line-height:1.3;font-weight:600}
h1{font-size:1.5rem;margin:.5em 0}
h2{font-size:1.1rem;margin-top:2em}
.skip-link{position:absolute;left:-9999px;top:0;background:#000;color:#fff;padding:10px 16px;z-index:100}
.skip-link:focus{left:10px;top:10px}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

.site-header{border-bottom:1px solid var(--color-border)}
.header-inner{display:flex;align-items:center;gap:20px;padding:16px 20px;flex-wrap:wrap;max-width:720px;margin:0 auto}
.brand{font-weight:600;color:var(--color-text);text-decoration:none}
.nav-list{list-style:none;display:flex;gap:16px;margin:0;padding:0}
.nav-list a{color:var(--color-muted)}
.header-search{margin-left:auto;display:flex;gap:6px}
.header-search input{padding:5px 6px;border:1px solid var(--color-border);background:transparent;color:var(--color-text);min-width:160px}
.header-search button{padding:5px 10px;border:1px solid var(--color-border);background:transparent;color:var(--color-text);cursor:pointer}

.page-section{padding:36px 20px 60px}
.lead{color:var(--color-muted)}

.article-list{list-style:none;margin:0;padding:0}
.article-card{border-bottom:1px solid var(--color-border);padding:22px 0}
.article-card:last-child{border-bottom:none}
.article-card h2{margin:0 0 4px;font-size:1.05rem;font-weight:600}
.article-meta{color:var(--color-muted);font-size:.9rem;margin:0 0 6px}
.article-meta a{color:var(--color-muted)}
.article-excerpt{margin:0;color:var(--color-text)}

.pagination{display:flex;align-items:center;gap:16px;justify-content:center;margin-top:36px;color:var(--color-muted);font-size:.9rem}

.search-form-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.search-form-row input[type=search]{flex:1;min-width:200px;padding:8px;border:1px solid var(--color-border);background:transparent;color:var(--color-text)}
.search-form-row select{padding:8px;border:1px solid var(--color-border);background:transparent;color:var(--color-text)}
.search-form-row button{padding:8px 14px;border:1px solid var(--color-border);background:transparent;color:var(--color-text);cursor:pointer}
.search-status{color:var(--color-muted)}

.btn{color:var(--color-link);text-decoration:underline;text-underline-offset:2px}

.article-page dl.article-details{display:grid;grid-template-columns:130px 1fr;gap:5px 12px;margin:24px 0;font-size:.95rem}
.article-page dl.article-details dt{color:var(--color-muted)}
.article-page dl.article-details dd{margin:0}
.author-list{margin:6px 0}
.orcid-link{margin-left:2px}
.orcid-icon{display:inline-block;width:14px;height:14px;border-radius:50%;background:#a6ce39;color:#fff;font-size:9px;text-align:center;line-height:14px;font-weight:700}
.affiliations{color:var(--color-muted);font-size:.9rem;margin:4px 0 16px}
.keyword-list{list-style:none;display:flex;flex-wrap:wrap;gap:4px 16px;padding:0;margin:8px 0;color:var(--color-muted);font-size:.9rem}
.keyword-list li::before{content:"·";margin-right:16px;color:var(--color-border)}
.keyword-list li:first-child::before{content:none}
.abstract p{white-space:pre-wrap}
.article-actions{display:flex;gap:20px;margin:24px 0;flex-wrap:wrap}
.references ol{padding-left:20px}
.references li{margin-bottom:10px}

.citation-formats{margin:32px 0;padding-top:20px;border-top:1px solid var(--color-border)}
.citation-buttons{display:flex;gap:16px;margin-bottom:12px;flex-wrap:wrap}
.citation-tab{padding:0;border:none;background:none;color:var(--color-muted);text-decoration:underline;text-underline-offset:2px;cursor:pointer;font-size:.9rem}
.citation-tab.active{color:var(--color-text);font-weight:600;text-decoration:none}
.citation-output{white-space:pre-wrap;border:1px solid var(--color-border);padding:14px;font-size:.9rem}
.citation-downloads{margin-top:10px;display:flex;gap:14px;flex-wrap:wrap;font-size:.9rem}

.site-footer{border-top:1px solid var(--color-border);margin-top:60px;color:var(--color-muted);font-size:.85rem}
.footer-inner{display:flex;justify-content:space-between;padding:20px;flex-wrap:wrap;gap:10px;max-width:720px;margin:0 auto}
.footer-links a{margin-left:14px;color:var(--color-muted)}
.footer-credit{font-size:.85rem}
.footer-credit a{color:var(--color-muted)}

.code-block{border:1px solid var(--color-border);padding:14px 16px;overflow-x:auto;font-size:.85rem}

@media (max-width:600px){
  .article-page dl.article-details{grid-template-columns:110px 1fr}
  .header-search{width:100%;order:3}
}

@media (prefers-color-scheme:dark){
  :root{--color-bg:#141414;--color-text:#e8e8e8;--color-muted:#999;--color-border:#333;--color-link:#e8e8e8}
}
:root[data-theme="dark"]{--color-bg:#141414;--color-text:#e8e8e8;--color-muted:#999;--color-border:#333;--color-link:#e8e8e8}
:root[data-theme="light"]{--color-bg:#fff;--color-text:#1a1a1a;--color-muted:#666;--color-border:#ddd;--color-link:#1a1a1a}