:root{--bg: #14141f;--surface: #1e1e2e;--surface-2: #28283c;--text: #e8e8f0;--text-dim: #9898b0;--accent: #4f8cff;--accent-dim: #2a4a80;--warn: #ffb84f;--danger: #ff6b6b;--ok: #51cf8e;--radius: 10px;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Segoe UI,Hiragino Sans,Yu Gothic UI,sans-serif;-webkit-font-smoothing:antialiased}#root{max-width:720px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}.app-header{display:flex;align-items:center;gap:8px;padding:14px 16px;border-bottom:1px solid var(--surface-2);position:sticky;top:0;background:var(--bg);z-index:10}.app-header h1{font-size:18px;margin:0;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.header-nav{display:flex;align-items:center;flex-shrink:0}.tab-bar{position:sticky;bottom:0;z-index:20;display:flex;background:var(--surface);border-top:1px solid var(--surface-2);padding-bottom:env(safe-area-inset-bottom)}.tab-bar-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;background:none;border-radius:0;padding:8px 4px 10px;color:var(--text-dim)}.tab-bar-item.active{color:var(--accent)}.tab-bar-item .tab-icon{font-size:20px;line-height:1;display:flex;align-items:center}.tab-bar-item:not(.active) .tab-icon svg{filter:grayscale(1);opacity:.6}.tab-bar-item .tab-label{font-size:10px}.app-main:has(.select-bar)+.tab-bar{display:none}.app-main:has(.selection-panel)+.tab-bar{display:none}.app-main:has(.add-words-flow)+.tab-bar{display:none}.add-words-flow{display:flex;flex-direction:column;gap:16px}.app-header button.ghost{padding:10px 8px}.app-main{flex:1;padding:16px;display:flex;flex-direction:column;gap:16px}button{font:inherit;border:none;border-radius:var(--radius);padding:10px 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