:root{--bg-main: #0f1117;--bg-card: #1a1d27;--bg-hover: #22263a;--text-main: #e8eaf0;--text-muted: #8b90a0;--accent: #6c8aff;--border: #2a2d3e;--positive: #2d6a4f;--negative: #7b2335;--neutral: #3a3d52;--engine-gpt4o: #10a37f;--engine-perplexity: #a855f7;--engine-claude: #d97706;--engine-gemini: #2563eb}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;font-family:Arial,sans-serif}body{background-color:var(--bg-main);color:var(--text-main)}.container{max-width:1600px;margin:0 auto;padding:24px}input,select,textarea{background-color:var(--bg-card);color:var(--text-main)}.app-header{background:var(--bg-card);border-bottom:1px solid var(--border);padding:10px 24px}.app-logo{display:block;height:52px;border-radius:6px}.app-footer{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:32px;padding:16px 24px;border-top:1px solid var(--border)}.app-footer-label{font-size:11px;color:var(--text-muted);letter-spacing:.06em;text-transform:uppercase}.app-footer-logo{height:22px;border-radius:4px}