:root{--ink:#163b43;--muted:#607477;--paper:#faf8f2;--line:#dcded5;--sea:#075d66;--accent:#bd5a32}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif;-webkit-font-smoothing:antialiased}a{color:var(--sea);text-underline-offset:4px}a:hover{color:var(--accent)}a:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:5px}.skip{position:fixed;top:-90px;left:12px;padding:12px;background:white;z-index:100}.skip:focus{top:12px}.site-header{background:var(--paper);border-bottom:1px solid var(--line)}.header-inner{max-width:1360px;margin:auto;min-height:96px;padding:20px 48px;display:flex;align-items:center;gap:45px}.brand{display:grid;grid-template-columns:44px auto;column-gap:12px;align-items:center;text-decoration:none;color:var(--ink);flex-shrink:0}.brand-mark{grid-row:span 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.15s}.guide-card:hover{transform:translateY(-3px);border-color:var(--accent)}.card-number{font:12px Arial,sans-serif;color:var(--accent);margin-bottom:24px}.card-action{font:12px Arial,sans-serif;margin-top:auto;padding-top:24px;color:var(--sea)}.directory{padding:44px;background:#e9eee8;border-radius:6px;margin-bottom:60px}.directory label{display:block;font-size:12px;margin-bottom:10px}.directory input{width:100%;max-width:600px;padding:16px;border:1px solid #bcc9c0;background:#fff;border-radius:4px;font-size:16px;color:var(--ink);margin-bottom:24px}.directory-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 36px;align-items:start}.guide-group{border-top:1px solid #bdcbc0;padding:18px 0}.guide-group summary{font-size:15px;font-weight:600;line-height:1.5}.guide-group ul{list-style:none;padding:12px 0 0;margin:0}.guide-group li{margin:0;padding:8px 0}.guide-group a{font-size:13px;line-height:1.5;text-decoration:none}.site-footer{background:var(--ink);color:#d2dfdb;padding:45px 48px}.footer-inner{max-width:1184px;margin:auto}.footer-brand{font-size:20px;font-weight:bold;letter-spacing:3px;text-decoration:none;color:#fff}.footer-inner p{font-size:13px;line-height:1.7}.footer-inner nav{display:flex;flex-wrap:wrap;gap:24px;margin:24px 0}.footer-inner nav a{color:#fff;font-size:13px}.copyright{opacity:.7;margin-top:34px!important}[hidden]{display:none!important}@media(min-width:1500px){.reading-layout{gap:90px;grid-template-columns:minmax(0,790px) 280px}}@media(max-width:1050px){.header-inner{padding:20px 28px;gap:28px}.primary{gap:16px}.primary a{font-size:12px}.page-shell{padding:0 28px}.reading-layout{grid-template-columns:minmax(0,1fr) 220px;gap:32px}.article-hero h1{font-size:48px}.side-box{padding:18px}}@media(max-width:760px){html{scroll-padding-top:20px}.header-inner{display:block;padding:20px}.brand{width:max-content}.primary{justify-content:flex-start;gap:20px;overflow-x:auto;padding-top:20px;padding-bottom:3px}.primary .nav-directory{padding:8px 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nav{gap:18px}.article-copy img{margin:24px 0}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.guide-card{transition:none}}

/* Grouped navigation and contextual tour placements */
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/* Topic navigation and editorial guide hubs */
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