:root{--txt:#1d2a33;--muted:#55656f;--bg:#fdfcf9;--sky:#e9f3f7;--river:#2f6f8f;--clay:#c0623a;--rule:#d6e2e8}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--txt);font:16.5px/1.7 -apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--river);text-underline-offset:2px}
a:hover{color:var(--clay)}
img{max-width:100%;height:auto}
.shell{width:100%;max-width:1080px;margin:0 auto;padding:0 18px}
.prose{max-width:740px}
.masthead{position:sticky;top:0;z-index:5;background:rgba(253,252,249,.96);border-bottom:3px solid var(--clay)}
.masthead .shell{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding-top:10px;padding-bottom:10px}
.sitename{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:1.05rem;color:var(--txt);text-decoration:none}
.jumpnav{display:flex;flex-wrap:wrap;gap:4px 14px;font-size:.92rem}
.jumpnav a{color:var(--muted);text-decoration:none;padding:4px 0;border-bottom:2px solid transparent}
.jumpnav a:hover{color:var(--river);border-bottom-color:var(--river)}
.opener{background:linear-gradient(180deg,var(--sky),var(--bg));padding:48px 0 36px}
.opener .shell{display:flex;flex-wrap:wrap;align-items:center;gap:32px}
.opener-copy{flex:1 1 380px}
.opener-art{flex:1 1 280px;max-width:380px}
.opener-art img{display:block;border-radius:14px;box-shadow:0 6px 22px rgba(29,42,51,.12)}
.opener h1{font-size:clamp(1.8rem,4.5vw,2.6rem);line-height:1.15;margin:.15em 0 .4em}
.tagline{display:inline-block;background:var(--clay);color:#fff;font-size:.78rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:4px 10px;border-radius:999px}
.chapter{padding:40px 0;border-top:1px solid var(--rule)}
.chapter.banded{background:var(--sky)}
.chapter h2{font-size:1.55rem;line-height:1.25;margin:0 0 .6em;color:var(--river)}
.chapter h3{font-size:1.1rem;margin:1.4em 0 .3em}
.notegrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;margin:22px 0 0}
.note{background:#fff;border-left:4px solid var(--clay);border-radius:6px;padding:14px 16px;box-shadow:0 1px 4px rgba(29,42,51,.06)}
.note strong{display:block;margin-bottom:4px}
.note p{margin:0;font-size:.95rem;color:var(--muted)}
.checklist{padding-left:1.2em}
.checklist li{margin:.35em 0}
.asklist details{background:#fff;border:1px solid var(--rule);border-radius:8px;margin:10px 0;padding:0 16px}
.asklist summary{cursor:pointer;font-weight:600;padding:13px 0;list-style:none;position:relative;padding-right:26px}
.asklist summary::-webkit-details-marker{display:none}
.asklist summary::after{content:"+";position:absolute;right:2px;top:10px;font-size:1.3rem;color:var(--clay)}
.asklist details[open] summary::after{content:"\2212"}
.asklist details p{margin:0 0 14px}
.closing{background:var(--txt);color:#cfdbe1;font-size:.9rem;padding:26px 0}
.closing a{color:#f4c27a}
@media (max-width:620px){.opener{padding-top:30px}.chapter{padding:30px 0}.jumpnav{font-size:.88rem}}