:root{color-scheme:light;--ink:#183c60;--blue:#225a9c;--muted:#466582;--pale:#edf4fc;--line:#aac3df;--body:"Avenir Next","Segoe UI","Trebuchet MS",sans-serif;--display:Optima,Candara,"Trebuchet MS",sans-serif;font-family:var(--body);font-size:18px;color:var(--ink);background:#f1f6fc}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:1.5rem}
body{margin:0;line-height:1.65;background:#f1f6fc}
body::before{content:"";display:block;height:9px;background:#3a6ca7}
a{color:#205797;text-decoration-thickness:1.5px;text-underline-offset:.22em;overflow-wrap:anywhere}
a:hover{color:#123e70;text-decoration-thickness:2.5px}
a:focus-visible,button:focus-visible{outline:3px solid #8c4e26;outline-offset:4px}
button,a{-webkit-tap-highlight-color:#b9d4f5}
[hidden]{display:none!important}
img{max-width:100%;height:auto}
button{font-size:1rem}
h1,h2,h3,p,ul,figure{margin-top:0}
h1,h2,h3{font-family:var(--display);font-weight:600;letter-spacing:-.025em;text-wrap:pretty}
h1{font-size:clamp(2.45rem,4.2vw,3.9rem);line-height:1.09;max-width:23ch;margin-bottom:1.5rem}
h2,[data-role="answer-heading"]{font-size:clamp(1.75rem,2.6vw,2.2rem);line-height:1.2;max-width:27ch;margin-bottom:1.25rem}
[data-role="group-heading"]{font-size:1.1rem;line-height:1.4;max-width:none;margin-bottom:1.15rem;color:#345f8d}
p{margin-bottom:1.15rem}
li{padding-left:.15rem;margin-bottom:.6rem}
li::marker{color:#3c70aa}
strong{font-weight:650}
[data-role="skip-link"]{position:absolute;left:1rem;top:-8rem;background:#fff;padding:.7rem 1rem;min-height:48px;z-index:10;border:2px solid var(--blue);border-radius:1rem}
[data-role="skip-link"]:focus{top:1rem}
[data-role="site-header"]{max-width:1300px;margin:auto;display:flex;justify-content:space-between;align-items:center;gap:2rem;padding:1.3rem 3rem 1.1rem}
[data-role="brand"]{display:flex;align-items:center;gap:.8rem;text-decoration:none;font-family:var(--display);font-size:1.25rem;font-weight:600;line-height:1.15;min-height:54px;flex-shrink:0}
[data-role="brand-mark"]{position:relative;display:block;width:49px;height:49px;border:3px solid #326bad;border-radius:50%;background:#f8fbff}
[data-role="brand-mark"]::before{content:"";position:absolute;width:22px;height:14px;border:3px solid #326bad;border-top:0;border-right:0;border-radius:0 0 0 7px;left:10px;top:11px}
[data-role="brand-mark"]::after{content:"";position:absolute;right:7px;top:8px;width:9px;height:9px;background:#326bad;border-radius:50%}
[data-role="site-header"] nav{display:flex;gap:.6rem;flex-wrap:wrap;align-items:center}
[data-role="site-header"] nav a{font-size:1rem;display:inline-flex;min-height:48px;align-items:center;padding:.4rem .9rem;text-decoration:none;border-radius:2rem}
[data-role="site-header"] nav a:hover,[data-role="site-header"] nav a[aria-current]{background:#dceafb}
main{max-width:1300px;margin:0 auto;background:#fbfdff;border:2px solid #c1d3e8;border-radius:2.7rem;overflow:clip}
[data-role="page-heading"]{display:grid;grid-template-columns:minmax(0,1fr);gap:3rem;align-items:start;padding:3.5rem 3.8rem 3.2rem;border-bottom:2px solid #b8cfe8;background:#eaf3fd}
[data-role="heading-copy"]{min-width:0}
[data-role="eyebrow"]{font-size:1rem;color:#345f8d;margin-bottom:1.15rem;font-weight:600;max-width:42ch}
[data-role="intro"]{font-size:1.2rem;line-height:1.6;max-width:54ch;margin-bottom:1.4rem}
[data-role="guide-note"]{max-width:54ch}
[data-role="primary-link"]{background:#245b9d;color:white;font-size:1rem;font-weight:600;display:inline-flex;align-items:center;gap:1.5rem;min-height:54px;border-radius:2rem;padding:.6rem 1.3rem;text-decoration:none;margin-top:.5rem}
[data-role="primary-link"]:hover{background:#174a85;color:white}
[data-role="chapter-layout"]{display:grid;grid-template-columns:190px minmax(0,1fr);gap:3rem;padding:3rem 3.8rem 3.8rem}
[data-role="anchor-rail"]{align-self:start;position:sticky;top:1.5rem;font-size:1rem;border-left:3px solid #8fb0d6;padding-left:1rem}
[data-role="anchor-rail"] p{font-family:var(--display);font-weight:600;font-size:1.1rem;margin:0 0 .5rem}
[data-role="anchor-rail"] ul{padding:0;margin:0;list-style:none}
[data-role="anchor-rail"] li{padding:0;margin:0}
[data-role="anchor-rail"] a{min-height:46px;display:flex;align-items:center;padding:.4rem .2rem;line-height:1.3;text-decoration:none}
[data-role="anchor-rail"] a:hover{text-decoration:underline}
[data-role="chapter-content"]{min-width:0;max-width:75ch}
[data-role="answer-section"]{padding-bottom:2.2rem;margin-bottom:1.8rem;border-bottom:2px solid #d4e1ef}
[data-role="answer-section"] p,[data-role="answer-section"] ul{max-width:69ch}
[data-role="text-link"],[data-role="source-link"]{min-height:48px;display:inline-flex;gap:.8rem;align-items:center;padding:.55rem .2rem;font-size:1rem;font-weight:600;line-height:1.4;margin:.2rem .9rem .4rem 0}
[data-role="source-link"]{border:2px solid #b0c8e2;padding:.7rem 1.1rem;border-radius:1rem;max-width:100%;text-decoration:none}
[data-role="source-link"]:hover{background:#dfecfb}
[data-role="route-cards"]{display:grid;gap:1rem}
[data-role="route-card"]{display:grid;grid-template-columns:3rem minmax(0,1fr) auto;gap:1.2rem;align-items:center;padding:1.25rem 1.3rem;text-decoration:none;border-radius:1.8rem;background:#e9f2fd;border:2px solid #acc6e3;min-height:92px}
[data-role="route-card"]:hover{background:#dceafb;border-color:#6f98c6}
[data-role="route-card"] strong{display:block;font-family:var(--display);font-size:1.4rem;line-height:1.25;margin-bottom:.35rem}
[data-role="route-summary"]{display:block;font-size:1rem;color:#395d80;line-height:1.5}
[data-role="route-symbol"]{display:grid;place-items:center;width:48px;height:48px;border:2px solid #386ca8;border-radius:50%;font-family:var(--display);font-size:1.5rem;color:#2c619d;background:#f7fbff}
[data-role="question-list"]{padding-left:1.25rem}
[data-role="question-list"] li{padding-bottom:.25rem}
[data-role="route-index"]{padding:0!important;list-style:none}
[data-role="route-index"] li{padding:0;margin:0;border-bottom:1px solid #bdd1e8}
[data-role="index-link"]{min-height:52px;padding:.65rem .15rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;line-height:1.4;text-decoration:none}
[data-role="index-link"]:hover{text-decoration:underline}
[data-role="chapter-notes"]{background:#eef4fc;padding:1.8rem 2rem;border-radius:1.8rem;margin-top:2.4rem;border-top:3px dashed #8dadd2}
[data-role="chapter-notes"] h2,[data-role="answer-heading"]{font-size:1.65rem;margin-bottom:1rem}
[data-role="chapter-notes"] ul{padding:0;margin:0;list-style:none}
[data-role="chapter-notes"] li{padding:0;margin:0}
[data-role="note-link"]{font-size:1rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:48px;line-height:1.4;padding:.55rem 0;border-bottom:1px solid #c3d5e9;text-decoration:none}
[data-role="note-link"]:hover{text-decoration:underline}
[data-role="next-step"]{margin-top:2.5rem;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem;font-size:1rem}
[data-role="next-step"]>span{font-family:Georgia,"Times New Roman",serif;font-style:italic}
[data-role="next-link"]{display:flex;align-items:center;gap:1.5rem;min-height:50px;padding:.7rem 1.2rem;border:2px solid #87a9d1;border-radius:2rem;text-decoration:none;line-height:1.4;max-width:100%}
[data-role="next-link"]:hover{background:#dfebfb}
[data-role="site-footer"]{max-width:1300px;margin:2rem auto 0;padding:1.3rem 3rem 2.5rem;color:#365c80}
[data-role="site-footer"] p{font-size:1rem;max-width:75ch;line-height:1.65}
[data-role="site-footer"] nav{display:flex;flex-wrap:wrap;gap:.2rem 1.2rem}
[data-role="site-footer"] a{display:inline-flex;align-items:center;min-height:48px;padding:.6rem .2rem;font-size:1rem;line-height:1.4}
[data-role="still-life"]{margin:0;min-width:0;max-width:100%}
[data-role="image-plate"]{position:relative;aspect-ratio:4/3;isolation:isolate;overflow:hidden;background:linear-gradient(132deg,#c6dbf1,#e4effb 60%,#b9d0ea);border:2px solid #a3bfdc;border-radius:3rem 3rem 3rem 1.2rem}
[data-role="image-plate"]::before{content:"";position:absolute;inset:12%;background:linear-gradient(90deg,transparent 49.8%,#b0c9e6 49.8% 50.2%,transparent 50.2%),#f3f8fd;transform:rotate(-13deg);box-shadow:8px 16px 20px #456e9826;border-radius:3px;z-index:-1}
[data-role="paper-fold"]{position:absolute;width:42%;height:75%;left:25%;top:14%;background:linear-gradient(90deg,#d8e7f6 50%,#b0cce8 50%);transform:rotate(24deg);box-shadow:10px 15px 12px #355f8c1f;z-index:-1}
[data-role="paper-ring"]{position:absolute;width:25%;aspect-ratio:1;border:14px solid #3f70a9;border-radius:50%;right:12%;top:42%;box-shadow:5px 9px 12px #2a5e9426;z-index:-1}
[data-role="image-plate"] img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0}
[data-image-state="ready"] img{opacity:1}
figcaption{font-family:Georgia,"Times New Roman",serif;font-size:1rem;font-style:italic;line-height:1.5;color:#3c6287;padding:1rem .4rem 0}
@media(min-width:1500px){body{padding-inline:2rem}}
@media(max-width:1100px){[data-role="site-header"]{padding-inline:2rem}main{margin-inline:1rem}[data-role="page-heading"]{padding:3rem 2.4rem;gap:2rem}[data-role="chapter-layout"]{padding:2.6rem 2.4rem;gap:2.2rem;grid-template-columns:165px minmax(0,1fr)}[data-role="site-footer"]{padding-inline:2rem}}
@media(max-width:760px){:root{font-size:17px}[data-role="site-header"]{padding:1.1rem 1.2rem;display:block}[data-role="brand"]{width:fit-content;margin-bottom:.7rem}[data-role="site-header"] nav{gap:.2rem}[data-role="site-header"] nav a{padding-inline:.8rem;min-height:46px}main{margin-inline:.6rem;border-radius:1.8rem}[data-role="page-heading"]{padding:2rem 1.25rem;gap:1.8rem}h1{font-size:2.5rem;line-height:1.1}h2,[data-role="answer-heading"]{font-size:1.85rem}[data-role="intro"]{font-size:1.1rem}[data-role="chapter-layout"]{display:block;padding:1.5rem 1.25rem 2.3rem}[data-role="anchor-rail"]{position:static;padding:0 0 1.2rem;border-left:0;border-bottom:2px solid #a9c2df;margin-bottom:2rem}[data-role="anchor-rail"] ul{display:flex;flex-wrap:wrap;gap:.15rem .4rem}[data-role="anchor-rail"] a{min-height:44px;border:1px solid #b5cbe4;border-radius:1.4rem;padding:.45rem .85rem;background:#f2f7fd}[data-role="anchor-rail"] p{margin-bottom:.7rem}[data-role="answer-section"]{padding-bottom:1.7rem;margin-bottom:1.8rem}[data-role="route-card"]{grid-template-columns:2.6rem minmax(0,1fr) auto;gap:.7rem;padding:1rem .9rem;border-radius:1.5rem}[data-role="route-symbol"]{width:42px;height:42px;font-size:1.3rem}[data-role="route-card"] strong{font-size:1.25rem}[data-role="chapter-notes"]{padding:1.4rem 1.1rem}[data-role="site-footer"]{padding:0 1.4rem 1.6rem}[data-role="site-footer"] nav{gap:.2rem 1rem}[data-role="next-step"]{display:block}[data-role="next-step"]>span{display:block;margin-bottom:.5rem}[data-role="next-link"]{width:fit-content}[data-role="image-plate"]{border-radius:2rem 2rem 2rem .9rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
@media print{body{background:white;color:#111}body::before,[data-role="site-header"],[data-role="anchor-rail"],[data-role="site-footer"],[data-role="compare-controls"],[data-role="next-step"]{display:none!important}main{border:0;border-radius:0}[data-role="chapter-layout"]{display:block;padding:1rem}[data-role="page-heading"]{padding:1rem;background:white;display:block}[data-role="still-life"]{max-width:18rem}[data-role="answer-section"]{break-inside:avoid}a{color:#111}}