.skip-link{position:absolute;left:-999px;top:auto;width:1px;height:1px;overflow:hidden;z-index:100}.skip-link:focus{left:8px;top:8px;width:auto;height:auto;background:#fff;color:#000;padding:8px 16px;border-radius:4px;box-shadow:0 2px 4px #0003;outline:2px solid #005fcc}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}*,*:before,*:after{box-sizing:border-box}:root{--color-bg: #ffffff;--color-text: #333333;--color-text-secondary: #666666;--color-text-muted: #888888;--color-border: #cccccc;--color-social-bg: #dcdcdc;--color-social-hover: #bbbbbb;--color-focus: #005fcc}.dark-theme{--color-bg: #1a1a1a;--color-text: #e0e0e0;--color-text-secondary: #b0b0b0;--color-text-muted: #999999;--color-border: #444444;--color-social-bg: #333333;--color-social-hover: #555555}@media(prefers-color-scheme:dark){:root:not(.dark-theme):not(.light-theme){--color-bg: #1a1a1a;--color-text: #e0e0e0;--color-text-secondary: #b0b0b0;--color-text-muted: #999999;--color-border: #444444;--color-social-bg: #333333;--color-social-hover: #555555}}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--color-bg);color:var(--color-text);display:flex;flex-direction:column;min-height:100vh}a:focus,button:focus{outline:2px solid var(--color-focus);outline-offset:2px}.theme-toggle{position:fixed;top:10px;right:10px;z-index:10000;padding:8px 14px;border-radius:6px;border:none;background:var(--color-social-bg);color:var(--color-text);cursor:pointer;font-size:1rem;line-height:1;transition:background-color .2s ease}.theme-toggle:hover{background:var(--color-social-hover)}footer{margin-top:auto;padding:1.5rem 1rem;border-top:1px solid var(--color-border);font-size:.9rem;line-height:1.4;width:100%;text-align:center}footer ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;justify-content:center;gap:1rem}footer a{text-decoration:none;color:inherit}footer a:hover,footer a:focus{text-decoration:underline}footer p{margin-top:.75rem}@media print{.skip-link,.theme-toggle{display:none}}