:root{--ink:#132f2d;--forest:#102b29;--paper:#f4f1e9;--cream:#ebe5d8;--aqua:#91c6c0;--lime:#dce978;--orange:#e98552;--line:#cfd6cf;--muted:#5c6c68;--white:#fff;--serif:"Newsreader",Georgia,serif;--sans:"DM Sans",sans-serif;color-scheme:light}html[data-theme="dark"]{--ink:#edf4f0;--forest:#091b1a;--paper:#112422;--cream:#19302d;--line:#38504c;--muted:#a8b9b4;--white:#18312e;color-scheme:dark}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.55}a{color:inherit}img{display:block;max-width:100%}.skip-link{position:fixed;top:-80px;left:16px;z-index:99;background:var(--lime);padding:12px 18px}.skip-link:focus{top:12px}.portal-header{height:76px;display:flex;align-items:center;gap:32px;padding:0 clamp(20px,4vw,64px);border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--paper) 90%,transparent);backdrop-filter:blur(14px);position:sticky;top:0;z-index:20}.portal-brand img{width:128px;height:auto}.portal-header nav{display:flex;gap:24px;margin-left:auto}.portal-header nav a,.portal-footer a{text-decoration:none;font-size:.88rem;font-weight:600}.theme-toggle{width:42px;height:42px;border:1px solid var(--line);border-radius:50%;background:transparent;color:var(--ink);cursor:pointer;font-size:1.15rem}.portal-hero{min-height:calc(100vh - 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