:root{--header-bg: #2b2b2b;--header-foreground: #fff;--accent: #0366d6}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial;color:#111}.app-header{background:var(--header-bg);color:var(--header-foreground);padding:12px 0;position:relative}.header-inner{max-width:1100px;margin:0 auto;position:relative;padding:0 16px;display:flex;align-items:center;justify-content:center}.title{font-weight:700;font-size:18px}.host-main{min-height:calc(100vh - 56px);background:#f7f7f7}a{color:var(--accent)}.app-link-inline{margin-right:8px}