:root{--primary: #0ea5e9;--primary-hover: #0284c7;--bg: #F9FAFB;--surface: #FFFFFF;--text: #111827;--text-secondary: #6B7280;--border: #E5E7EB;--success: #10B981;--radius: 8px}[data-theme=dark]{--primary: #38bdf8;--primary-hover: #0ea5e9;--bg: #0F172A;--surface: #1E293B;--text: #F1F5F9;--text-secondary: #94A3B8;--border: #334155;--success: #34D399}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}a{color:var(--primary);text-decoration:none}a:hover{color:var(--primary-hover)}.container{max-width:1200px;margin:0 auto;padding:0 20px}.header{background:var(--surface);border-bottom:1px solid var(--border);padding:16px 0;position:sticky;top:0;z-index:100}.header .container{display:flex;align-items:center;justify-content:space-between}.logo{font-size:24px;font-weight:800;color:var(--primary);display:flex;align-items:center;gap:8px}.logo 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