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20px}.container.narrow{max-width:860px}.muted{color:var(--muted)}.small{font-size:.85rem}.center{text-align:center;padding-top:30%}.site-header{z-index:50;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#ffffffe0;border-bottom:1px solid #0ea5e924;position:sticky;top:0}.header-inner{flex-wrap:wrap;align-items:center;gap:14px;padding:8px 20px;display:flex}.brand img{width:auto;height:56px}.main-nav{flex-wrap:wrap;gap:4px;margin-left:auto;display:flex}.main-nav a{color:var(--ink-soft);white-space:nowrap;border-radius:999px;padding:7px 13px;font-weight:700}.main-nav a:hover{background:var(--sky-100);color:var(--blue-700)}.lang-switch{background:var(--sky-100);border-radius:999px;padding:4px;display:inline-flex}.lang-switch button{color:var(--muted);background:0 0;border:none;border-radius:999px;padding:6px 12px;font-size:.85rem;font-weight:800}.lang-switch 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