:root{color-scheme:light dark;--r-bg:#F0F4FA;--r-panel:#FFF;--r-ink:#203459;--r-muted:#52627C;--r-blue:#2A4B8D;--r-line:#CFD8E7;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px}*{box-sizing:border-box}body{margin:0;background:var(--r-bg);color:var(--r-ink);line-height:1.65}a{color:var(--r-blue);text-underline-offset:3px}a:focus-visible{outline:3px solid #B84117;outline-offset:4px}.reader-header{background:var(--r-ink);color:#FFF;padding:20px max(22px,calc((100vw - 1040px)/2));display:flex;align-items:center;justify-content:space-between;gap:24px}.reader-header a{color:#FFF}.reader-brand{font-size:1.125rem;font-weight:750;text-decoration:none}.reader-header nav{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:.875rem}.reader-main{max-width:1040px;margin:auto;padding:38px 24px 64px}.reader-breadcrumb{font-size:.875rem;color:var(--r-muted);margin-bottom:20px}.reader-main h1{font-size:clamp(2rem,5vw,3rem);line-height:1.15;letter-spacing:-.045em;margin:0 0 20px;max-width:23ch}.reader-intro{font-size:1.125rem;max-width:72ch;color:var(--r-muted)}.reader-meta{display:flex;gap:12px 24px;flex-wrap:wrap;font-size:.875rem;padding:18px 0 25px;border-bottom:1px solid var(--r-line);color:var(--r-muted)}.reader-content{max-width:78ch}.reader-content h2{font-size:1.65rem;line-height:1.3;letter-spacing:-.03em;margin:42px 0 16px;scroll-margin-top:25px}.reader-content h3{font-size:1.2rem;line-height:1.4;margin:26px 0 10px}.reader-content p{margin:12px 0}.reader-content ul{padding-left:23px}.reader-content li{padding:5px 0}.reader-toc{border-left:3px solid var(--r-blue);padding:8px 22px;margin:28px 0;background:var(--r-panel)}.reader-toc ul{list-style:none;padding:0;margin:9px 0}.reader-toc li{padding:3px 0}.reader-callout{padding:20px 24px;background:var(--r-panel);border:1px solid var(--r-line);border-radius:8px;margin:25px 0}.reader-footer{border-top:1px solid var(--r-line);padding:25px 24px;max-width:1040px;margin:auto;font-size:.875rem;color:var(--r-muted)}.reader-footer nav{display:flex;flex-wrap:wrap;gap:12px 22px;margin-bottom:14px}.reader-skip{position:absolute;left:20px;top:-100px;background:var(--r-panel);padding:12px;z-index:2}.reader-skip:focus{top:10px}@media(max-width:650px){.reader-header{align-items:flex-start;flex-direction:column;gap:14px;padding:18px 22px}.reader-main{padding:30px 22px 45px}.reader-header nav{gap:8px 16px}.reader-main h1{font-size:2rem}}@media(prefers-color-scheme:dark){:root{--r-bg:#122033;--r-panel:#192940;--r-ink:#EAF0FC;--r-muted:#B5C3D9;--r-blue:#ADC5FF;--r-line:#41546F}.reader-header{background:#203459}}@media print{.reader-header nav,.reader-skip{display:none}body{background:#FFF;color:#111}.reader-main{max-width:none;padding:20px}.reader-content{max-width:none}a{color:#111}}