:root{--ink:#17212b;--muted:#65727f;--soft:#8b97a3;--line:#d9e1e8;--paper:#f4f6f2;--panel:#fff;--panel-soft:#f9fbf8;--accent:#0f766e;--accent-dark:#084c46;--accent-soft:#e5f3ef;--warm:#a85522;--gold:#d8a13a;--shadow:0 18px 55px #17212b1a}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:linear-gradient(180deg, #ffffff9e, #f4f6f2eb 310px), var(--paper);color:var(--ink);margin:0;font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}.shell{min-height:100vh}.topbar{-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);z-index:10;background:#ffffffd1;justify-content:space-between;align-items:center;gap:24px;padding:16px 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