:root{--bg:#fafafa;--fg:#111;--muted:#6b6b6b;--border:#e4e4e4;--accent:#000;--font-display:"Space Grotesk", sans-serif;--font-body:"Inter", sans-serif;--font-mono:"JetBrains Mono", monospace}:root[data-theme=dark]{--bg:#121212;--fg:#fafafa;--muted:#888;--border:#222;--accent:#fff}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--fg);font-family:var(--font-body);-webkit-font-smoothing:antialiased;line-height:1.6;transition:background-color .3s,color .3s,border-color .3s}header,section,footer,.project,.cert,.status-item,nav a,.logo,.theme-toggle,.btn{transition:background-color .3s,color .3s,border-color .3s,transform .4s cubic-bezier(.16,1,.3,1),box-shadow .4s cubic-bezier(.16,1,.3,1)}a{color:inherit;text-decoration:none}.wrap{max-width:760px;margin:0 auto;padding:0 24px}header{border-bottom:1px solid var(--border);padding:20px 0;position:relative}header 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