:root{--bg: var(--cream);--slate: #6B6568;--border: #E8E2D9;--card: #FFFFFF;--card-alt: #FAFAF7;--sidebar-w: 220px}*{box-sizing:border-box;margin:0;padding:0}html{background:var(--bg);color:var(--ink);scroll-behavior:smooth}body{font-family:var(--font-body);font-size:1rem;font-weight:400;line-height:1.65}.layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-w);flex-shrink:0;background:var(--card);border-right:1px solid var(--border);padding:32px 0;position:fixed;top:0;left:0;bottom:0;overflow-y:auto;z-index:10}.sidebar-logo{font-family:Fraunces,Georgia,serif;font-variation-settings:"opsz" 144;font-size:1.05rem;font-weight:600;color:var(--ink);padding:0 24px;margin-bottom:8px}.sidebar-sub{font-family:var(--font-body);font-size:var(--label-size);font-weight:var(--label-weight);letter-spacing:var(--label-tracking);color:var(--label-ink);padding:0 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a:hover{text-decoration:underline}.main{flex:1;margin-left:var(--sidebar-w);max-width:740px;padding:clamp(32px,6vw,64px) clamp(24px,5vw,56px)}.mobile-nav-toggle{display:none;position:fixed;bottom:20px;right:20px;z-index:20;width:48px;height:48px;border-radius:50%;background:var(--ink);color:#fff;border:none;font-size:1.2rem;cursor:pointer;box-shadow:0 4px 16px #00000026}.sidebar-close{display:none;position:absolute;top:16px;right:16px;background:none;border:none;font-size:1.2rem;color:var(--slate);cursor:pointer}@media(max-width:768px){.sidebar{transform:translate(-100%);transition:transform .25s 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h3{font-size:1rem;font-weight:600;margin-top:1.5rem;margin-bottom:.4rem}.letter ul{margin:.5rem 0 1rem 1.25rem;max-width:65ch}.letter li{margin-bottom:.4rem}.letter-table-wrap{overflow-x:auto;margin:1rem 0 1.5rem}.letter-table{width:100%;max-width:520px;border-collapse:collapse;font-size:.85rem}.letter-table th{text-align:left;font-family:var(--font-body);font-size:var(--label-size);font-weight:var(--label-weight);letter-spacing:var(--label-tracking);padding:8px 12px;border-bottom:2px solid var(--border);color:var(--label-ink)}.letter-table td{padding:6px 12px;border-bottom:1px solid var(--border)}.letter-table tr:last-child td{font-weight:600;border-bottom:2px solid var(--border)}.letter-sign{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border)}.letter-sign p{margin-bottom:.5rem}.letter-footnote{font-size:.8rem;color:var(--slate);margin-top:2rem;padding-top:1rem;border-top:1px solid var(--border);font-style:italic}.kf{font-weight:600}.page-intro{font-size:1rem;color:var(--slate);margin-bottom:2rem;max-width:65ch}.toc{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px 24px;margin-bottom:2rem}.toc-label{font-family:var(--font-body);font-size:var(--label-size);font-weight:var(--label-weight);letter-spacing:var(--label-tracking);color:var(--label-ink);margin-bottom:14px}.toc-groups{display:grid;grid-template-columns:1fr 1fr;gap:20px 32px}.toc-group-title{font-family:var(--font-body);font-size:var(--label-size);font-weight:var(--label-weight);letter-spacing:var(--label-tracking);color:var(--label-ink);margin-bottom:6px}.toc-group-list{list-style:none;margin:0}.toc-group-list li{margin:0}.toc-group-list a{font-size:.875rem;font-weight:500;color:var(--ink);text-decoration:none;padding:4px 0;display:block;transition:color .15s}.toc-group-list 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var(--border);max-width:65ch}h3{font-size:1rem;font-weight:600;line-height:1.3;margin-top:1.5rem;margin-bottom:.4rem}.section-card h3:first-of-type{margin-top:.5rem}p{margin-bottom:.85rem;max-width:65ch}ul{margin:.4rem 0 1rem 1.25rem;max-width:65ch}li{margin-bottom:.3rem}.sub-label{font-family:var(--font-body);font-size:var(--label-size);font-weight:var(--label-weight);letter-spacing:var(--label-tracking);color:var(--label-ink);margin-top:1.25rem;margin-bottom:.3rem}.sub-label:first-of-type{margin-top:.5rem}.back-top{display:block;margin-top:1rem;padding-top:.75rem;border-top:1px solid var(--border);font-size:.75rem;font-weight:500;color:var(--slate);text-decoration:none;transition:color .15s}.back-top:hover{color:var(--ink)}