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var(--shadow)}.app-header h1{margin:0;max-width:560px;font-size:clamp(1.35rem,2.6vw,2rem);font-weight:650;line-height:.98;letter-spacing:-.035em}.hero-copy{width:430px;max-width:430px;font-size:.8rem;line-height:1.45;color:var(--muted);text-align:left;margin:0 0 0 auto;text-wrap:balance}.theme-switcher{position:relative;display:inline-flex;align-items:center;justify-content:space-between;width:88px;height:40px;padding:3px;border:1px solid var(--border);border-radius:999px;background:var(--chip-bg);cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;overflow:hidden}.theme-slider-thumb{position:absolute;top:3px;left:3px;width:40px;height:32px;border-radius:999px;background:var(--accent-soft);border:1px solid color-mix(in srgb,var(--accent) 28%,transparent);transition:transform .18s ease}.theme-switcher.is-light 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