.sbk{--bg:#f7f7f7;--layout:#fff;--layout-muted:#efefef;--layout-muted-hover:#f5f5f5;--muted:#e3e3e3;--muted-fg:#5e5e5e;--card:#fff;--line:#e3e3e3;--input:#fafafa;--copper:#d97a56;--primary:#2d2d2d;--primary-hover:#1a1a1a;--primary-fg:#fff;--secondary:#e3e3e3;--secondary-hover:#cfcfcf;--accent:#ebebeb;--accent-hover:#dedede;--ink:#1a1a1a;--pos:oklch(52% .13 155);--neg:oklch(55% .18 28);--warn:oklch(66% .14 75);--shadow:0 6px 20px -6px #00000014, 0 2px 4px #0000000d;--r-sm:.25rem;--r-md:calc(.8rem - 2px);--r-lg:.8rem;--r-xl:14px;--sans:"Inter",system-ui,-apple-system,sans-serif;--serif-body:"Source Serif 4","Iowan Old Style",Georgia,serif;--mono:"JetBrains Mono",ui-monospace,SFMono-Regular,"SF Mono",Menlo,monospace;background:var(--bg);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;letter-spacing:-.005em;margin:0;padding:0;font-size:15.2px;line-height:1.5;transition:background .22s,color .22s}.sbk[data-mode=dark]{--bg:#1a1a1a;--layout:#1a1a1a;--layout-muted:#121212;--layout-muted-hover:#282828;--muted:#282828;--muted-fg:#a0a0a0;--card:#1f1f1f;--line:#2a2a2a;--input:#282828;--copper:#e8916f;--primary:#e8e8e8;--primary-hover:#fff;--primary-fg:#1a1a1a;--secondary:#282828;--secondary-hover:#3a3a3a;--accent:#282828;--accent-hover:#353535;--ink:#f0f0f0;--shadow:0 6px 20px -6px #0000008c, 0 2px 4px #0000004d}.sbk *,.sbk :before,.sbk :after{box-sizing:border-box}.sbk ::selection{background:var(--primary);color:var(--primary-fg)}.sbk .wrap{max-width:1080px;margin:0 auto;padding:0 32px 96px}.sbk header.mast{border-bottom:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:24px;margin-bottom:56px;padding:40px 0 32px;display:flex}.sbk .mast-id{align-items:center;gap:18px;display:flex}.sbk .mast-mark{width:auto;height:34px;color:var(--ink)}.sbk .mast-meta{color:var(--muted-fg);font-size:11.4px;font-family:var(--mono);font-feature-settings:"tnum"}.sbk h1.mast-title{font-family:var(--sans);letter-spacing:-.032em;margin:0;font-size:28.5px;font-weight:600;line-height:1.15}.sbk .toggle{font:inherit;cursor:pointer;border:1px solid var(--line);background:var(--layout);color:var(--ink);border-radius:var(--r-sm);align-items:center;gap:8px;height:40px;padding:0 16px;font-size:13px;transition:background .14s,border-color .14s;display:inline-flex}.sbk .toggle:hover{background:var(--accent);border-color:var(--secondary-hover)}.sbk .toggle:focus-visible{outline:2px solid var(--copper);outline-offset:2px}.sbk section{margin:0 0 48px;padding:0;scroll-margin-top:24px}.sbk h2{font-family:var(--sans);letter-spacing:-.032em;margin:0 0 8px;font-size:34.2px;font-weight:600;line-height:1.2}.sbk h3{letter-spacing:-.01em;margin:40px 0 12px;font-size:19px;font-weight:600;line-height:1.4}.sbk h4{text-transform:uppercase;letter-spacing:.08em;color:var(--muted-fg);margin:0 0 10px;font-size:13px;font-weight:600}.sbk .lede{font-family:var(--serif-body);color:var(--muted-fg);max-width:64ch;margin:0 0 8px;font-size:19px;line-height:1.6}.sbk p{max-width:72ch;margin:0 0 14px}.sbk a{color:var(--copper);text-underline-offset:3px;text-decoration-thickness:1px}.sbk code,.sbk kbd{font-family:var(--mono);font-feature-settings:"tnum";font-size:.875em}.sbk .sec-rule{background:var(--line);border:0;height:1px;margin:0 0 32px}.sbk .card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);padding:24px}.sbk .grid{gap:16px;display:grid}.sbk .g2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}.sbk .g3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.sbk .swatches{grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:12px;display:grid}.sbk .sw{border:1px solid var(--line);border-radius:var(--r-md);background:var(--card);cursor:pointer;text-align:left;font:inherit;color:inherit;padding:0;transition:transform .12s,box-shadow .12s;overflow:hidden}.sbk .sw:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.sbk .sw:focus-visible{outline:2px solid var(--copper);outline-offset:2px}.sbk .sw-chip{border-bottom:1px solid var(--line);height:72px;display:block}.sbk .sw-body{padding:10px 12px 12px;display:block}.sbk .sw-name{letter-spacing:-.01em;font-size:11.4px;font-weight:600;display:block}.sbk .sw-var{font-family:var(--mono);color:var(--muted-fg);margin-top:3px;font-size:10px;display:block}.sbk .sw-hex{font-family:var(--mono);color:var(--muted-fg);text-transform:uppercase;margin-top:5px;font-size:11.4px;display:block}.sbk table{border-collapse:collapse;width:100%;font-size:14px}.sbk thead th{text-align:left;text-transform:uppercase;letter-spacing:.08em;color:var(--muted-fg);border-bottom:1px solid var(--line);background:var(--layout-muted);padding:0 12px 10px;font-size:11.4px;font-weight:600}.sbk thead th:first-child{border-top-left-radius:var(--r-sm)}.sbk thead th:last-child{border-top-right-radius:var(--r-sm)}.sbk tbody td{border-bottom:1px solid var(--line);vertical-align:middle;padding:11px 12px}.sbk tbody tr:hover{background:var(--layout-muted-hover)}.sbk td.mono,.sbk .mono{font-family:var(--mono);font-feature-settings:"tnum";font-size:12.5px}.sbk .plate{border:1px solid var(--line);border-radius:var(--r-lg);justify-content:center;align-items:center;min-height:132px;padding:36px;display:flex}.sbk .plate-light{color:#090b1f;background:#f7f7f7}.sbk .plate-dark{color:#fff;background:#1a1a1a}.sbk .plate-caption{color:var(--muted-fg);font-size:11.4px;font-family:var(--mono);margin-top:8px;display:block}.sbk .clearspace{outline:1px dashed var(--copper);outline-offset:0;padding:17.5px;line-height:0;display:inline-block;position:relative}.sbk .clearspace svg{display:block}.sbk .cs-note{color:var(--muted-fg);margin-top:12px;font-size:11.4px}.sbk .rule-list{gap:9px;margin:0;padding:0;list-style:none;display:grid}.sbk .rule-list li{align-items:flex-start;gap:10px;font-size:14px;line-height:1.5;display:flex}.sbk .tick{color:var(--pos);flex:none;font-weight:700;line-height:1.5}.sbk .cross{color:var(--neg);flex:none;font-weight:700;line-height:1.5}.sbk .pill{text-transform:uppercase;letter-spacing:.07em;border-radius:var(--r-sm);white-space:nowrap;border:1px solid #0000;align-items:center;gap:6px;padding:3px 8px;font-size:10px;font-weight:600;display:inline-flex}.sbk .pill-ok{background:color-mix(in oklch,var(--pos) 14%,transparent);color:var(--pos);border-color:color-mix(in oklch,var(--pos) 30%,transparent)}.sbk .pill-gap{background:color-mix(in oklch,var(--warn) 16%,transparent);color:var(--warn);border-color:color-mix(in oklch,var(--warn) 32%,transparent)}.sbk .pill-none{background:var(--muted);color:var(--muted-fg);border-color:var(--line)}.sbk .callout{border-left:3px solid var(--copper);background:var(--layout-muted);border-radius:0 var(--r-md) var(--r-md) 0;margin:20px 0;padding:16px 20px;font-size:14px}.sbk .callout strong{font-weight:600}.sbk .spec{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--card);padding:24px}.sbk .spec+.spec{margin-top:12px}.sbk .spec-label{text-transform:uppercase;letter-spacing:.08em;color:var(--muted-fg);font-size:10px;font-family:var(--mono);margin-bottom:12px}.sbk .spec-serif-body{font-family:var(--serif-body);font-size:19px;line-height:1.6}.sbk .spec-sans{font-family:var(--sans);font-size:19px;line-height:1.6}.sbk .spec-mono{font-family:var(--mono);font-feature-settings:"tnum";font-size:17.1px}.sbk .demo-box{background:var(--muted);border:1px solid var(--line);height:56px;font-family:var(--mono);color:var(--muted-fg);justify-content:center;align-items:center;font-size:10px;display:flex}.sbk .btn-row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.sbk .b{border-radius:var(--r-sm);height:40px;font:inherit;cursor:default;border:1px solid #0000;align-items:center;padding:0 16px;font-size:14px;font-weight:500;display:inline-flex}.sbk .b-primary{background:var(--primary);color:var(--primary-fg)}.sbk .b-secondary{background:var(--secondary);color:var(--ink)}.sbk .b-ghost{color:var(--ink);border-color:var(--line);background:0 0}.sbk .toast{background:var(--primary);color:var(--primary-fg);border-radius:var(--r-sm);font-size:13px;font-family:var(--mono);opacity:0;pointer-events:none;z-index:50;padding:10px 18px;transition:opacity .16s,transform .16s;position:fixed;bottom:24px;left:50%;transform:translate(-50%)translateY(8px)}.sbk .toast.on{opacity:1;transform:translate(-50%)translateY(0)}@media (prefers-reduced-motion:reduce){.sbk *,.sbk :before,.sbk :after{transition-duration:.01ms!important;animation-duration:.01ms!important}}@media print{.sbk .toggle,.sbk .toast{display:none}.sbk section{break-inside:avoid}}.sbk .dl-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;display:grid}.sbk .dl-card{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--card);flex-direction:column;align-items:flex-start;gap:14px;padding:20px;display:flex}.sbk .dl-preview{border-radius:var(--r-md);background:var(--layout-muted);border:1px solid var(--line);justify-content:center;align-items:center;width:100%;height:64px;display:flex}.sbk .dl-preview.on-dark{background:#1a1a1a}.sbk .dl-meta{color:var(--muted-fg);font-size:12.5px}.sbk .dl-name{margin-bottom:2px;font-size:13.5px;font-weight:600;display:block}.sbk .dl-btn{font:inherit;cursor:pointer;border:1px solid var(--line);background:var(--layout);color:var(--ink);border-radius:var(--r-sm);align-items:center;gap:6px;height:34px;padding:0 14px;font-size:13px;font-weight:500;text-decoration:none;transition:background .12s;display:inline-flex}.sbk .dl-btn:hover{background:var(--accent)}.sbk .dl-btn:focus-visible{outline:2px solid var(--copper);outline-offset:2px}