:root{--primary: #646cff;--primary-hover: #535bf2;--bg-dark: #242424;--bg-card: #2f2f2f;--text-main: rgba(255, 255, 255, .87);--text-muted: #a1a1aa;font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:var(--text-main);background-color:var(--bg-dark);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}#root{width:100%;max-width:1280px;margin:0 auto;padding:2rem;text-align:center}.btn{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}.btn:hover{border-color:var(--primary)}.btn:focus,.btn:focus-visible{outline:4px auto -webkit-focus-ring-color}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}.card{padding:2em;background-color:var(--bg-card);border-radius:12px;box-shadow:0 4px 6px -1px #0000001a}.input-group{display:flex;flex-direction:column;gap:.5rem;text-align:left;margin-bottom:1rem}input{padding:.8rem;border-radius:6px;border:1px solid #444;background-color:#1a1a1a;color:#fff;font-size:1rem}input:focus{outline:2px solid var(--primary);border-color:transparent}nav{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background:#1a1a1a;border-bottom:1px solid #333;position:fixed;top:0;left:0;right:0;z-index:100}nav a{color:var(--text-main);text-decoration:none;font-weight:500;padding:.5rem 1rem;border-radius:6px;transition:background .2s}nav a:hover,nav a.active{background:#ffffff1a}.nav-brand{font-size:1.5rem;font-weight:700;color:var(--primary)}.main-content{margin-top:80px}