:root{--bg-color: #ffffff;--text-color: #222222;--text-muted: #6b7280;--card-color: #ffffff;--border-color: #dcdcdc;--primary: #ff8c42;--primary-soft: #ffb36b;--primary-glow: #ff9f5a}[data-theme=dark]{--bg-color: #0f0f0f;--text-color: #ffffff;--text-muted: #d1d5db;--card-color: #1a1a1a;--border-color: #444444}*{padding:0;margin:0;box-sizing:border-box}body{font-family:Inter,sans-serif;background-color:var(--bg-color);color:var(--text-color)}a{color:var(--text-color);text-decoration:none}.app-container{background-color:var(--bg-color);color:var(--text-color);min-height:100vh}header{display:flex;align-items:center;justify-content:center;gap:16px;padding:18px 20px;border-bottom:1px solid var(--border-color);background-color:var(--bg-color)}header h1{flex:1;font-size:28px}header h1 a{color:var(--primary);text-decoration:underline}header .navigation ul{list-style:none;display:flex;align-items:center;gap:12px}header .navigation ul li{font-size:20px}header .navigation 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