:root{--paper:#f5f2e9;--paper-deep:#ebe6d8;--ink:#203734;--ink-soft:#49615b;--muted:#63736c;--line:#c9d1c5;--accent:#b64c32;--accent-dark:#8f3826;--mint:#dce9dc;--white:#fffdf6;--serif:Georgia,'Times New Roman',serif;--sans:Arial,Helvetica,sans-serif;--measure:70rem;--focus:#bf5b36}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.7 var(--sans);-webkit-font-smoothing:antialiased}
body:before{position:fixed;inset:0;z-index:10;pointer-events:none;content:"";opacity:.16;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.14'/%3E%3C/svg%3E")}
a{color:var(--accent-dark);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--ink)}
a:focus-visible,button:focus-visible{outline:3px solid var(--focus);outline-offset:4px;border-radius:3px}
.skip-link{position:absolute;left:1rem;top:-5rem;background:var(--ink);color:var(--white);padding:.7rem 1rem;z-index:100}.skip-link:focus{top:1rem}
.wrap{width:min(calc(100% - 3rem),var(--measure));margin-inline:auto}
.site-header{position:relative;z-index:20;border-bottom:1px solid var(--line);background:rgba(245,242,233,.96)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:2rem;min-height:88px}
.brand{display:inline-flex;align-items:center;gap:.8rem;text-decoration:none;color:var(--ink);font-weight:700;letter-spacing:-.035em;font-size:1.02rem}
.brand-mark{width:37px;height:37px;display:grid;place-items:center;border:1px solid var(--ink);border-radius:50%;color:var(--accent);font-family:var(--serif);font-size:1.3rem}
.nav{display:flex;align-items:center;gap:1.65rem}
.nav a{color:var(--ink-soft);text-decoration:none;font-size:.88rem;font-weight:600}
.nav a:hover,.nav a[aria-current=page]{color:var(--accent-dark)}
.menu-toggle{display:none;background:transparent;border:1px solid var(--line);color:var(--ink);font:600 .9rem var(--sans);padding:.55rem .8rem}
.eyebrow{color:var(--accent-dark);font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:.72rem;margin:0 0 1rem}
h1,h2,h3{font-family:var(--serif);font-weight:500;line-height:1.08;letter-spacing:-.035em}
h1{font-size:clamp(2.65rem,6vw,5.1rem);margin:.15rem 0 1.4rem;max-width:14ch}
h2{font-size:clamp(1.8rem,3.3vw,2.7rem);margin:0 0 1rem}
h3{font-size:1.48rem;margin:.1rem 0 .65rem}
p{margin:.6rem 0 1rem}
.lede{font-size:clamp(1.05rem,1.8vw,1.28rem);line-height:1.65;color:var(--ink-soft);max-width:63ch}
.hero{padding:5.3rem 0 4.6rem;position:relative;overflow:hidden}
.hero-layout{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(290px,.88fr);align-items:center;gap:3.5rem}
.hero-copy{position:relative;z-index:2}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-art{position:relative;min-height:355px;background:var(--mint);overflow:hidden;border-radius:48% 48% 4px 4px}
.hero-art img{position:absolute;inset:0;display:block;width:100%;height:100%;object-fit:cover;object-position:center}
.hero-art:before,.hero-art:after{display:none}
.feature-illustration{display:block;width:calc(100% + 3.3rem);height:148px;max-width:none;object-fit:cover;margin:-1.65rem -1.65rem 1.25rem}
.hero-art:before,.hero-art:after{content:"";position:absolute;border:1px solid rgba(32,55,52,.28);border-radius:50%;transform:rotate(-28deg)}
.hero-art:before{width:330px;height:490px;left:15%;top:-12%}
.hero-art:after{width:230px;height:390px;left:30%;top:0}
.orbit{position:absolute;border-radius:50%;background:var(--accent);width:18px;height:18px;left:27%;top:24%;box-shadow:120px 175px 0 -5px var(--ink),70px 5px 0 -7px var(--accent)}
.diagram-label{position:absolute;font-size:.69rem;letter-spacing:.1em;text-transform:uppercase;font-weight:700}
.diagram-label.one{top:14%;right:12%}.diagram-label.two{bottom:16%;left:11%}.diagram-label.three{bottom:27%;right:8%}
.hero-art .sun{position:absolute;right:20%;top:20%;width:74px;height:74px;border-radius:50%;background:#e8bd8c}
.hero-art .path{position:absolute;width:120%;height:90px;left:-7%;bottom:7%;border-top:1px solid rgba(32,55,52,.45);transform:rotate(-17deg)}
.button{display:inline-flex;align-items:center;justify-content:center;gap:.6rem;margin-top:.8rem;background:var(--ink);color:var(--white);padding:.84rem 1.18rem;text-decoration:none;font-weight:600;border:1px solid var(--ink);transition:transform .18s ease,background .18s ease}
.button:hover{background:var(--accent-dark);color:white;transform:translateY(-2px)}
.button.secondary{background:transparent;color:var(--ink);border-color:var(--line)}
.button.secondary:hover{border-color:var(--accent);color:var(--accent-dark)}
.section{padding:4.2rem 0}
.section.tint{background:var(--paper-deep)}
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:2rem;margin-bottom:2rem}
.section-heading p{color:var(--muted);max-width:38ch;margin:0}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.feature{background:var(--paper);padding:1.65rem;min-height:210px;display:flex;flex-direction:column;align-items:flex-start}
.feature .index{color:var(--accent);font:500 1rem var(--serif);margin-bottom:1.4rem}
.feature h3 a{color:var(--ink);text-decoration:none}.feature h3 a:hover{color:var(--accent-dark)}
.feature p{font-size:.93rem;color:var(--muted);margin:0}
.arrow-link{margin-top:auto;padding-top:1rem;font-weight:700;text-decoration:none;font-size:.88rem}
.split-section{display:grid;grid-template-columns:.8fr 1.2fr;gap:5rem;align-items:start}
.callout{padding:1.8rem 2rem;background:var(--ink);color:var(--white);border-left:5px solid var(--accent)}
.callout p{color:#e0e7dd;margin:0}
.callout strong{color:#f4c9a8}
.guide-index{display:grid;grid-template-columns:repeat(2,1fr);gap:0 3rem;border-top:1px solid var(--line)}
.guide-row{display:flex;align-items:baseline;gap:1rem;padding:1.05rem 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink)}
.guide-row span:first-child{font:500 1rem var(--serif);color:var(--accent);min-width:2rem}
.guide-row strong{font-weight:600}.guide-row:hover strong{color:var(--accent-dark)}
.page-intro{padding:4.1rem 0 2.7rem;border-bottom:1px solid var(--line)}
.page-intro h1{font-size:clamp(2.6rem,5vw,4.3rem);max-width:18ch}
.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:5rem;padding:3rem 0 5rem}
.article{max-width:71ch}
.article h2{margin-top:2.5rem;padding-top:1.1rem;border-top:1px solid var(--line);font-size:1.9rem}
.article h3{margin-top:1.5rem}
.article p,.article li{color:#3d554f}
.article ul{padding-left:1.35rem}
.article li{padding:.18rem 0}
.toc{position:sticky;top:1.5rem;border-left:1px solid var(--line);padding:0 0 0 1.2rem;height:max-content}
.toc strong{font-size:.75rem;letter-spacing:.1em;text-transform:uppercase}
.toc a{display:block;font-size:.83rem;color:var(--muted);text-decoration:none;padding:.36rem 0}
.toc a:hover{color:var(--accent-dark)}
.note{margin:2rem 0;padding:1.3rem 1.5rem;background:var(--mint);border-left:3px solid var(--ink);font-size:.94rem}
.closing{margin-top:2.7rem;padding-top:1.5rem;border-top:2px solid var(--ink)}
.topic-list{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.topic-card{background:var(--white);border:1px solid var(--line);padding:1.5rem;text-decoration:none;color:var(--ink);min-height:175px}
.topic-card:hover{border-color:var(--accent)}
.topic-card h3{font-size:1.35rem}
.topic-card p{font-size:.9rem;color:var(--muted)}
.glossary{display:grid;grid-template-columns:1fr 2fr;gap:0;border-top:1px solid var(--line)}
.glossary dt,.glossary dd{margin:0;padding:1rem 0;border-bottom:1px solid var(--line)}
.glossary dt{font-weight:700;color:var(--accent-dark)}
.site-footer{background:var(--ink);color:#f4f1e8;padding:3.5rem 0 1.4rem}
.footer-top{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:3rem;padding-bottom:2.5rem}
.site-footer .brand{color:#f4f1e8}
.site-footer p,.site-footer a{color:#d5dfd5}
.site-footer h2{font:700 .75rem var(--sans);letter-spacing:.11em;text-transform:uppercase;color:#f2c7a2}
.footer-links{display:grid;gap:.45rem}
.footer-links a{text-decoration:none;font-size:.9rem}
.footer-links a:hover{text-decoration:underline}
.footer-disclaimer{border-top:1px solid rgba(255,255,255,.24);padding-top:1.25rem;font-size:.86rem;color:#e1e7dc!important}
.copyright{margin-top:1.2rem;font-size:.76rem;color:#bbc9be!important}
.breadcrumbs{font-size:.82rem;color:var(--muted);margin:0 0 1.25rem}.breadcrumbs a{color:var(--muted)}
.reading-line{width:4rem;height:3px;background:var(--accent);margin:1.5rem 0}
.small-meta{font-size:.8rem;color:var(--muted)}
@media(max-width:800px){.wrap{width:min(calc(100% - 2rem),var(--measure))}.header-inner{min-height:72px}.menu-toggle{display:inline-flex}.nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--paper);padding:1rem 1.25rem 1.5rem;border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start;gap:.9rem}.nav.is-open{display:flex}.hero{padding:3.5rem 0}.hero-layout{grid-template-columns:1fr;gap:2.5rem}.hero-art{min-height:290px;max-width:520px;width:100%;margin-inline:auto}.feature-illustration{height:135px}.feature-grid{grid-template-columns:repeat(2,1fr)}.split-section{grid-template-columns:1fr;gap:1.5rem}.content-layout{grid-template-columns:1fr;gap:2rem}.toc{position:static;border-left:0;border-bottom:1px solid var(--line);padding:0 0 1rem}.guide-index{grid-template-columns:1fr}.topic-list{grid-template-columns:repeat(2,1fr)}.footer-top{grid-template-columns:1fr 1fr;gap:2rem}}
@media(max-width:520px){body{font-size:15px}.brand{font-size:.9rem}.brand-mark{width:33px;height:33px}.hero h1{font-size:3.1rem}.hero-art{min-height:245px}.feature-illustration{height:160px}.section{padding:3.2rem 0}.section-heading{display:block}.section-heading p{margin-top:.7rem}.feature-grid{grid-template-columns:1fr}.feature{min-height:175px}.topic-list{grid-template-columns:1fr}.footer-top{grid-template-columns:1fr;gap:1.6rem}.glossary{grid-template-columns:1fr}.glossary dt{padding-bottom:0;border:0}.glossary dd{padding-top:.35rem}.page-intro{padding:3rem 0 2rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}