:root{--color-primary: #1a56db;--color-primary-hover: #1e429f;--color-surface: #ffffff;--color-surface-secondary: #f3f4f6;--color-text: #111827;--color-text-muted: #6b7280;--color-border: #e5e7eb;--color-wa: #25D366;--radius-card: 16px;--shadow-card: 0 4px 24px rgba(0,0,0,.08);--shadow-card-hover: 0 8px 40px rgba(0,0,0,.16);--font-sans: "Inter", system-ui, sans-serif}[data-theme=dark]{--color-primary: #3b82f6;--color-surface: #0f172a;--color-surface-secondary: #1e293b;--color-text: #f1f5f9;--color-text-muted: #94a3b8;--color-border: #334155}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--color-surface);color:var(--color-text);line-height:1.5;transition:background-color .2s,color .2s}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}.container{max-width:1200px;margin:0 auto;padding:0 1rem}section{padding:4rem 0}h1,h2,h3,h4,h5,h6{line-height:1.2}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}