:root{--bg: #0f1729;--surface: rgba(255, 255, 255, .04);--surface-hover: rgba(255, 255, 255, .06);--border: rgba(255, 255, 255, .08);--gold: #f0b429;--text: #f4f6fb;--text-dim: #9aa5b8;--danger: #e53e3e;--bucket-new: #6b7280;--bucket-learning: #e53e3e;--bucket-familiar: #d69e2e;--bucket-known: #38a169;--radius-card: 12px;--radius-btn: 10px}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;-webkit-font-smoothing:antialiased}#root{min-height:100vh}a{color:inherit}.app-shell{max-width:480px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column;position:relative}.page{flex:1;padding:20px 16px 32px}h1,h2,h3{color:var(--gold);margin:0 0 12px}p{color:var(--text-dim);line-height:1.5}.card{background:var(--surface);border:1px solid 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