*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg: #f8f9fa;--surface: #ffffff;--text: #2d3436;--text-muted: #636e72;--border: #dfe6e9;--primary: #0984e3;--primary-light: #74b9ff;--accent: #00b894;--shadow: 0 1px 3px rgba(0, 0, 0, .08);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--radius: 8px}html,body{height:100%}body{font-family:Inter,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}#app{display:flex;flex-direction:column;min-height:100vh}.top-bar{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow);gap:16px;flex-wrap:wrap;position:fixed;top:0;left:0;right:0;z-index:10}.top-bar-left{display:flex;align-items:center;gap:8px}.app-title{font-size:20px;font-weight:700;color:var(--text);letter-spacing:-.5px}.about-toggle{width:24px;height:24px;border-radius:50%;border:1.5px solid 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