:root{--color-primary:#6739b6;--color-primary-light:#8b5fc7;--color-bg:#f5f5f5;--color-text:#333;--color-text-secondary:#666;--color-white:#fff;--radius:12px;--shadow:0 2px 12px rgba(0,0,0,.08)}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--color-bg);color:var(--color-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6}a{color:var(--color-primary);text-decoration:none}.container{margin:0 auto;max-width:750px;padding:0 16px}.btn-cta{background:var(--color-primary);border:none;border-radius:50px;color:var(--color-white);cursor:pointer;display:inline-block;font-size:18px;font-weight:600;padding:14px 40px;transition:background .2s}.btn-cta:hover{background:var(--color-primary-light)}