/* Shared reading layout: page title above, original navigation below. */
:root{--detail-top:64px;--detail-bottom:98px}
.page-content{padding-top:var(--detail-top);padding-bottom:calc(var(--detail-bottom) + env(safe-area-inset-bottom));}
.page-content>.detail-title{position:fixed;inset:0 0 auto;z-index:45;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:12px max(20px,5vw);padding-top:calc(12px + env(safe-area-inset-top));background:var(--topic-bg,#f3f1eb);color:var(--topic-link,#65532c);border-bottom:1px solid var(--gold-line);font:500 1rem/1.5 var(--font-sans);}
.detail-title span{max-width:65ch;text-wrap:pretty;overflow-wrap:anywhere}.detail-title a{font:1.3rem var(--font-serif);color:inherit;text-decoration:none;flex-shrink:0}
.page-content>.header{position:fixed;inset:auto 0 0;z-index:50;flex-wrap:wrap;padding-bottom:calc(16px + env(safe-area-inset-bottom));background:var(--ink);}
.page-content .header .menu-panel{top:auto;bottom:calc(100% + 12px);max-height:calc(100dvh - var(--detail-top) - var(--detail-bottom) - 24px);overflow:auto;overscroll-behavior:contain;}
.page-content main{padding-top:0}.page-content .page-intro{padding-top:38px}.page-content .page-wrap{width:min(1120px,88%)}
.page-content .page-reading{max-width:780px}.page-content .page-section{padding-block:48px;scroll-margin-top:calc(var(--detail-top) + 20px)}
.page-content .page-section h2{font-size:clamp(1.2rem,2.4vw,1.75rem);line-height:1.65;text-wrap:pretty;word-break:normal;overflow-wrap:anywhere;margin-bottom:1.6rem}
.page-content p,.page-content li,.page-content dd{line-height:1.95;line-break:strict;word-break:normal;overflow-wrap:anywhere;text-wrap:pretty;}
.page-content .page-description{font-size:1rem;max-width:48em;line-height:1.95}.page-content .page-description+.page-description{margin-top:1.4rem}
.page-content .page-bullets{padding-left:1.3em}.page-content .page-bullets li+li{margin-top:.8em}
.page-content .page-points>div{padding-block:24px}.page-content .page-points dt{margin-bottom:.65em}.page-content .page-reading p+p{margin-top:1.3em}
.page-content .page-table-wrap{overflow-x:auto}.page-content .page-table{min-width:580px}.page-content .page-table td{line-height:1.8}
.page-content :is(h2,h3,[id]){scroll-margin-top:calc(var(--detail-top) + 20px)}
.page-content .page-intro .page-headline{font-size:clamp(1.6rem,4.4vw,3rem);line-height:1.65}.page-content .headline-phrase{display:inline}.page-content .page-related{background:#f3f1eb}
@media(max-width:680px){:root{--detail-top:70px;--detail-bottom:84px}.page-content>.header{padding:12px 16px calc(12px + env(safe-area-inset-bottom));gap:10px}.page-content .header .brand span{font-size:1rem}.page-content .header .brand small{font-size:.75rem}.page-content .header .book,.page-content .site-menu summary{font-size:.875rem;min-height:44px}.page-content .page-section{padding-block:34px}.page-content .page-wrap{width:88%}.page-content>.detail-title{font-size:.95rem;gap:10px}.page-content .page-section h2{padding:14px 12px}.page-content .page-body{padding-top:30px}}
@media print{.page-content{padding:0}.page-content>.detail-title,.page-content>.header{display:none}}

/* Topic hubs and explicit return paths. */
.detail-title .detail-back{font:500 .875rem/1.5 var(--font-sans);max-width:45%;flex-shrink:1;text-align:center;border:1px solid currentColor;padding:8px 12px;min-height:44px;display:flex;align-items:center;justify-content:center;text-wrap:pretty}
.detail-title>span{flex:1;min-width:0}.detail-title a:focus-visible{outline:3px solid currentColor;outline-offset:3px}
.topic-index{margin:24px 0 44px;padding:24px;background:var(--topic-bg,#f3f1eb);border-top:2px solid var(--topic-link,#8a7448);scroll-margin-top:calc(var(--detail-top) + 20px)}
.topic-index h2{font-size:1.3rem;line-height:1.7;margin:0 0 20px}.topic-index ol{margin:0;padding-left:1.5rem}.topic-index li{padding:10px 4px;border-bottom:1px solid #17272f22}.topic-index a{display:block;min-height:44px;padding:6px 0;color:var(--topic-link,#65532c);text-decoration:underline;text-underline-offset:5px}.topic-index [aria-current]{font-weight:600}.topic-index small{display:block;font-size:.875rem;color:#65532c}.topic-return{display:inline-block;font-size:1.1rem;line-height:1.7;padding:14px 18px;border:1px solid currentColor;color:inherit;text-decoration:none}.reading-return .page-wrap{max-width:780px}.reading-next{margin:24px 0}.reading-topics{display:grid;grid-template-columns:1fr 1fr;gap:18px}.reading-topics a{padding:24px;background:var(--topic-bg,#f3f1eb);border-top:2px solid #9d895b;text-decoration:none;display:grid;gap:12px;color:inherit}.reading-topics span{font-size:.95rem}.page-content #topic-index{scroll-margin-top:calc(var(--detail-top) + 20px)}
@media(max-width:680px){.reading-topics{grid-template-columns:1fr}.detail-title .detail-back{font-size:.875rem;padding:8px;max-width:48%}.topic-index{padding:20px 16px}.page-content>.detail-title{align-items:center}}