:root{--ink:#173b45;--river:#2f6f7e;--river-dark:#214f5a;--paper:#f3eddf;--paper-light:#fbf8f1;--ochre:#d9a441;--brick:#b86b3f;--leaf:#5f7d58;--line:#c9c1ad;--white:#fff;--shadow:0 18px 45px rgba(23,59,69,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper-light);color:#253b3f;font-family:Georgia,"Times New Roman",serif;font-size:18px;line-height:1.72}a{color:#1f6172;text-decoration-thickness:1px;text-underline-offset:3px}a:hover{color:#9a4c2c}img{max-width:100%;height:auto;display:block}.skip-link{position:absolute;left:1rem;top:-5rem;background:var(--ink);color:var(--white);padding:.7rem 1rem;z-index:20}.skip-link:focus{top:1rem}.site-header{background:var(--ink);border-bottom:5px solid var(--ochre)}.nav-shell{max-width:1240px;margin:auto;min-height:92px;padding:0 2rem;display:flex;align-items:center;justify-content:space-between;gap:2rem}.brand{color:var(--white);display:grid;grid-template-columns:auto auto;column-gap:.4rem;line-height:1;text-decoration:none;letter-spacing:.02em}.brand span{font-style:italic;color:#d9e6e4}.brand strong{font-family:Arial,sans-serif;font-size:1.25rem;text-transform:uppercase;letter-spacing:.08em}.brand small{grid-column:1/3;margin-top:.45rem;color:#adc5c6;font-family:Arial,sans-serif;font-size:.68rem;text-transform:uppercase;letter-spacing:.16em}.nav-links{display:flex;align-items:center;gap:1.35rem;font-family:Arial,sans-serif;font-size:.78rem;text-transform:uppercase;letter-spacing:.09em}.nav-links a{color:#e6efed;text-decoration:none}.nav-links a:hover{color:#ffd26f}.menu-button{display:none;background:transparent;border:1px solid #8aa8a9;color:var(--white);padding:.55rem .8rem;font:700 .75rem Arial,sans-serif;text-transform:uppercase;letter-spacing:.08em}.page-hero{max-width:1240px;margin:auto;padding:5.5rem 2rem 3rem;display:grid;grid-template-columns:minmax(0,1fr) minmax(340px,.92fr);gap:4rem;align-items:center}.page-hero:has(.hero-copy:only-child){grid-template-columns:minmax(0,760px);justify-content:center}.eyebrow{margin:0 0 1rem;color:var(--brick);font:700 .76rem Arial,sans-serif;text-transform:uppercase;letter-spacing:.18em}.page-hero h1{margin:0;color:var(--ink);font-size:clamp(2.8rem,6vw,5.8rem);line-height:.98;letter-spacing:-.045em}.dek{max-width:680px;margin:1.5rem 0 0;color:#526568;font-size:1.23rem;line-height:1.55}.hero-image{margin:0;position:relative}.hero-image:before{content:"";position:absolute;inset:-14px 18px 18px -14px;border:2px solid var(--ochre);z-index:-1}.hero-image img{width:100%;aspect-ratio:3/2;object-fit:cover;box-shadow:var(--shadow);filter:saturate(.88) contrast(1.02)}.hero-image figcaption{margin-top:.7rem;color:#6e7978;font:italic .78rem Georgia,serif}.article-shell{max-width:820px;margin:0 auto;padding:2rem 2rem 6rem}.article-shell h2{margin:4rem 0 1.1rem;padding-top:.5rem;color:var(--ink);font-size:2rem;line-height:1.18;letter-spacing:-.02em;border-top:1px solid var(--line)}.article-shell h2:first-child{margin-top:1rem}.article-shell p{margin:0 0 1.35rem}.article-shell strong{color:var(--ink)}.topic-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin:2rem 0}.topic-card{display:flex;flex-direction:column;min-height:170px;padding:1.3rem;background:var(--paper);border-left:5px solid var(--river);text-decoration:none;box-shadow:0 7px 18px rgba(23,59,69,.07)}.topic-card span{font:700 .68rem Arial,sans-serif;text-transform:uppercase;letter-spacing:.15em;color:var(--brick)}.topic-card strong{margin:.55rem 0;font-size:1.25rem}.topic-card small{color:#5d6d6e;font-size:.85rem;line-height:1.5}.feature-list{padding-left:1.2rem}.feature-list li{margin:0 0 1rem;padding-left:.5rem}.note{margin:3rem 0 0;padding:1.3rem 1.5rem;background:#e8efe9;border-left:5px solid var(--leaf);color:#3f5550}.diagram{margin:2.5rem 0;padding:1rem;background:var(--paper);border:1px solid var(--line)}.diagram svg{display:block;width:100%;height:auto}.diagram text{fill:var(--ink);font:700 17px Arial,sans-serif}.affiliation-callout{margin:2rem 0;padding:1.4rem;background:#fff4d5;border:2px solid var(--ochre);font-weight:700;color:var(--ink)}.site-footer{background:var(--ink);color:#d8e3e1;border-top:5px solid var(--ochre)}.footer-shell{max-width:1240px;margin:auto;padding:4rem 2rem 2rem}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;padding-bottom:2.5rem;border-bottom:1px solid #47646a}.footer-links div{display:flex;flex-direction:column;gap:.55rem}.footer-links strong{color:#ffd26f;font:700 .76rem Arial,sans-serif;text-transform:uppercase;letter-spacing:.14em}.footer-links a{color:#d8e3e1;text-decoration:none;font-size:.9rem}.notice{max-width:980px;margin-top:2.5rem;font-size:.93rem;line-height:1.65}.notice a{color:#ffd26f}.copyright{margin:1.5rem 0 0;color:#8eaaab;font:400 .75rem Arial,sans-serif;text-transform:uppercase;letter-spacing:.1em}.not-found{max-width:820px;min-height:55vh;margin:auto;padding:7rem 2rem}.not-found h1{margin:.2rem 0 1rem;color:var(--ink);font-size:clamp(3rem,8vw,6rem);line-height:1}.not-found>p{max-width:680px}.button{display:inline-block;margin-top:1rem;padding:.8rem 1rem;background:var(--river);color:var(--white);font:700 .8rem Arial,sans-serif;text-decoration:none;text-transform:uppercase;letter-spacing:.08em}.mini-links{display:flex;flex-wrap:wrap;gap:1rem;margin-top:3rem}.mini-links a{padding:.5rem 0;border-bottom:2px solid var(--ochre);text-decoration:none}
@media(max-width:900px){.page-hero{grid-template-columns:1fr;gap:2.5rem;padding-top:4rem}.footer-links{grid-template-columns:1fr 1fr}.menu-button{display:block}.nav-links{display:none;position:absolute;top:92px;left:0;right:0;padding:1.5rem 2rem;background:var(--river-dark);flex-direction:column;align-items:flex-start;z-index:10}.nav-links.open{display:flex}}
@media(max-width:560px){body{font-size:17px}.nav-shell{padding:0 1.2rem}.page-hero,.article-shell,.footer-shell{padding-left:1.2rem;padding-right:1.2rem}.page-hero h1{font-size:2.9rem}.topic-grid,.footer-links{grid-template-columns:1fr}.article-shell h2{font-size:1.65rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}