:root{--brand:#0f766e;--brand-dark:#0b5c56;--ink:#132a2b;--soft:#f2f7f5;--card:#fff;--border:#dce8e4;--nav:rgba(255,255,255,.92)}[data-bs-theme=dark]{--ink:#e8f3f0;--soft:#102a2a;--card:#163333;--border:#31504e;--nav:rgba(14,32,32,.92)}body{color:var(--ink);background:var(--bs-body-bg);font-family:Inter,system-ui,-apple-system,sans-serif}.skip-link{position:fixed;top:-50px;left:1rem;background:#fff;padding:.7rem;z-index:9999}.skip-link:focus{top:1rem}.app-nav{background:var(--nav);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}.navbar-brand{color:var(--ink) !important}.navbar-brand span:last-child{font-weight:500}.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;background:var(--brand);color:#fff;border-radius:10px}.nav-link{color:var(--ink)}.hero{background:radial-gradient(circle at 90% 10%, rgba(15, 118, 110, 0.18), transparent 38%),linear-gradient(180deg, var(--soft), transparent);padding:3rem 0 4rem}.hero h1,.page-header h1,.guide-header 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